Download Bryant 548J User's Manual

548J
PACKAGED HEAT PUMP
3 TO 8.5 NOMINAL TONS
Product Data
C08515
(Optional hail guard shown.)
the environmentally sound refrigerant
This product has been designed and manufactured to
meet Energy Star® criteria for energy efficiency.
However, proper refrigerant charge and proper air flow
are critical to achieve rated capacity and efficiency.
Installation of this product should follow all
manufacturer’s refrigerant charging and air flow
instructions. Failure to confirm proper charge and
air flow may reduce energy efficiency and shorten
equipment life.
TABLE OF CONTENTS
PAGE
FEATURES AND BENEFITS . . . . . . . . . . . . . . . . . . . . 3
COOLING TABLES . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
MODEL NUMBER NOMENCLATURE . . . . . . . . . . . . 4
STATIC PRESSURE TABLES . . . . . . . . . . . . . . . . . . . 35
FACTORY OPTIONS & ACCESSORIES . . . . . . . . . . . 5
FAN PERFORMANCE . . . . . . . . . . . . . . . . . . . . . . . . . 36
ARI CAPACITY RATING . . . . . . . . . . . . . . . . . . . . . . . 8
OUTDOOR AIR INTAKE & EXHAUST PERF . . . . . 46
SOUND PERFORMANCE . . . . . . . . . . . . . . . . . . . . . . . 9
ELECTRICAL INFO . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
PHYSICAL DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
MCA / MOCP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
WEIGHTS & DIMENSIONS . . . . . . . . . . . . . . . . . . . . 18
TYPICAL WIRING DIAGRAMS . . . . . . . . . . . . . . . . 61
APPLICATION DATA . . . . . . . . . . . . . . . . . . . . . . . . . 24
GUIDE SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . 68
548J
PAGE
Your Bryant Packaged Heat Pump rooftop unit (RTU) was designed by customers for customers. With no-- strip screw
collars, handled access panels, and more we’ve made your unit easy to install, easy to maintain and easy to use.
Easy to install:
All Legacy Linet units are field-- convertible to horizontal air flow; no special adapter curbs or kits are necessary.
Convertible airflow design makes it easy to adjust to unexpected job-- site complications. Lighter units make easy
replacement. Bryant 3-- 8.5 ton 548J rooftops fit on existing Bryant curbs dating back to 1989. Also, our large control box
gives you room to work and room to mount Bryant accessory controls.
Easy to maintain:
Easy access handles by Bryant provide quick and easy access to all normally serviced components. Our “no-- strip” screw
system has superior holding power and guides screws into position while preventing the screw from stripping the unit’s
metal. Take accurate pressure readings by reading condenser pressure with panels on. Simply remove the black, composite
plug, route your gauge line(s) through the hole, and connect them to the refrigeration service valve(s). Now, you can take
refrigeration system pressure readings without affecting the condenser airflow.
Easy to use:
The newly designed, master terminal board by Bryant puts all your connections and troubleshooting points in one
convenient place, standard. Most low voltage connections are made to the same board and make it easy to find what you’re
looking for and easy to access it. Bryant rooftops have high and low pressure switches, a filter drier, and 2” (51mm) filters
standard.
2
FEATURES AND BENEFITS
S Up to 28% lighter than similar industry units. Lighter rooftops make easier replacement jobs.
S 3-- 8.5 ton units fit on existing Bryant rooftop curbs making the utility connections the same. This saves time and money
on replacement jobs.
S Standardized components and layout. Standardized components and controls make service and stocking parts easier.
S Scroll compressors on all units. This makes service, stocking parts, replacement, and trouble-- shooting easier.
S Crankcase heater on all models (except 04 size) provides added protection in all applications.
S Precession sized suction line accumulator provide high reliability by preventing liquid from entering the compressor
during low ambient conditions and reverse cycle switch over.
S 4-- way reversing valve rapidly changes the flow of refrigerant to quickly changeover from cooling to heating and heating
to cooling.
S Easy-- adjust, belt-- drive motor available on all sizes. Bryant provides a factory solution for most points in the fan
performance table. There’s no need for field-- supplied drives or motors.
S 3-- 5 ton models come standard with an Electric Drive X13, 5 speed/torque motor to provide exact performance in many
applications. Belt drive motor optional.
S Provisions for bottom or side condensate drain.
S Capable of thru-- the-- base or thru-- the-- curb electrical routing.
S Dependable time/temperature defrost logic provides a defrost cycle, if needed, every 30, 60, 90 or 120 minutes and is
adjustable.
S Single-- point electrical connection.
S Sloped, composite drain pan. Sloped, composite drain pan sheds water; and won’t rust.
S Standardized controls and control box layout. Standardized components and controls make stocking parts and service
easier.
S Clean, easy to use control box.
S Standard coils are copper round tube, aluminum plate fin with optional coil coatings and copper fin design.
S Color-- coded wiring.
S Large, laminated wiring and power wiring drawings which are affixed to unit make troubleshooting easy.
S Single, central terminal board for test and wiring connections.
S Fast-- access, handled, panels for easy access to the blower and blower motor, control box, and compressors.
S “No-- strip” screw system guides screws into the panel and captures them tightly without stripping the screw, the panel, or
the unit.
S Exclusive, newly-- design indoor refrigerant header for easier maintenance and replacement.
S Mechanical cooling (115_F to 25_F or 46_C to - 4_C) on Electro-- Mechanical (E/M) and Direct Digital Controller
(DDC) (RTU-- MP controller).
S 2” (51mm) disposable filters on all units.
S High capacity refrigerant filter-- drier on each circuit.
S High pressure switch, loss of charge switch and freeze protection adds greater unit reliability.
3
548J
S Field convertible airflow (3-- 8.5 tons). Being able to convert a unit from vertical airflow to horizontal makes it easy to
overcome job site complications.
MODEL NUMBER NOMENCLATURE
1
2
3
4
5
4
8
J P 0
____________
5
6
7
8
9
6 A 0
______
10 11 12 13 14 15 16 17 18
0
0 A 0 B 0 A A --
________
______
Unit Type
Design Revision
548J = High Eff. Heat Pump
--- = First Revision
Voltage
Packaging
E = 460--- 3--- 60
A = Standard
J = 208/230--- 1--- 60
B = LTL
P = 208/230--- 3--- 60
Factory Installed Options
T = 575--- 3--- 60
0A = None
548J
Cooling Tons
04 = 3 Ton
07 = 6 Ton
Outdoor Air Options
05 = 4 Ton
08 = 7.5 Ton
A = None
06 = 5 Ton
09 = 8.5 Ton
B = Temp econo w/ baro relief
E = Temp econo w/ baro relief & CO2
Refrig. System Options
H = Enthalpy econo w/ baro relief
A = One--- Stage Cooling Models
L = Enthalpy econo w/ baro relief & CO2
D = Two--- Stage Cooling Models
Q = Motorized 2 pos damper
Heat Level (Field---installed electric heaters available
Indoor Fan Options
000 = No Heat
0 = Electric Drive X13 Motor (04--- 06)
1 = Standard static option --- Belt Drive
Coil Options (Outdoor --- Indoor)
2 = Medium static option --- Belt Drive
A = Al/Cu --- Al/Cu
3 = High static option --- Belt Drive
B = Precoat Al/Cu --- Al/Cu
C = E--- coat Al/Cu --- Al/Cu
D = E--- coat Al/Cu --- E--- coat Al/Cu
E = Cu/Cu --- Al/Cu
F = Cu/Cu --- Cu/Cu
M = Al/Cu --- Al/Cu --- Louvered Hail guards
N = Precoat Al/Cu --- Al/Cu --- Louvered Hail Guards
P = E coat Al/Cu --- Al/Cu --- Louvered Hail Guards
Q = E coat Al/Cu --- E coat Al/Cu --- Louvered Hail Guards
R = Cu/Cu --- Al/Cu --- Louvered Hail Guards
S = Cu/Cu --- Cu/Cu --- Louvered Hail Guards
This product has been designed and manufactured to
meet Energy Star® criteria for energy efficiency.
However, proper refrigerant charge and proper air flow
are critical to achieve rated capacity and efficiency.
Installation of this product should follow all
manufacturer’s refrigerant charging and air flow
instructions. Failure to confirm proper charge and
air flow may reduce energy efficiency and shorten
equipment life.
the environmentally sound refrigerant
4
FACTORY OPTIONS AND/OR ACCESSORIES
Table 1 – FACTORY-- INSTALLED OPTIONS AND FIELD-- INSTALLED ACCESSORIES
Cabinet
Coil Options
Condenser Protection
Controls
Economizers
& Outdoor Air
Dampers
Economizer Sensors &
IAQ Devices
Electric Heat
Indoor Motor & Drive
Low Ambient Control
Power
Options
Roof Curbs
ITEM
Thru--- the--- base electrical connections
Cu/Cu indoor and/or outdoor coils
Pre--- coated outdoor coils
Premium, E--- coated outdoor coils
Condenser coil hail guard (louvered design)
Thermostats, temperature sensors, and subbases
RTU--- MP Multi--- protocol controller
Smoke detector (supply and/or return air)
Time Guard II compressor delay control circuit
Phase Monitor
EconoMi$er IV (for electro--- mechanical controlled RTUs)
EconoMi$er2 (for DDC controlled RTUs)
Motorized 2 position outdoor--- air damper
Manual outdoor--- air damper (25% and 50%)
Barometric relief1
Power exhaust
Single dry bulb temperature sensors2
Differential dry bulb temperature sensors2
Single enthalpy sensors2
Differential enthalpy sensors2
CO2 sensor (wall, duct, or unit mounted)2
Electric Resistance Heaters
Single Point Kit
Multiple motor and belt drive packages
Electric Drive, X13, 5--- speed/torque (3--- 5 ton)
Motormaster head pressure controller3
Convenience outlet (powered)
Convenience outlet (unpowered)
Non--- fused disconnect
Roof curb 14” (356mm)
Roof curb 24” (610mm)
NOTES:
1. Included with economizer.
2. Sensors for optimizing economizer.
3. See application data for assistance.
5
FACTORY
INSTALLED
OPTION
X
X
X
X
X
FIELD
INSTALLED
ACCESSORY
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
548J
CATEGORY
FACTORY OPTIONS AND/OR ACCESSORIES (cont.)
Economizer (dry--bulb or enthalpy)
Non--fused Disconnect
Economizers save money. They bring in fresh, outside air
for ventilation; and provide cool, outside air to cool your
building. This is the preferred method of low-- ambient
cooling. When coupled to CO2 sensors, Economizers can
provide even more savings by coupling the ventilation air
to only that amount required.
This OSHA-- compliant, factory-- installed, safety switch
allows a service technician to locally secure power to the
rooftop.
548J
Economizers are available, installed and tested by the
factory, with either enthalpy or dry-- bulb temperature
inputs. There are also models for electromechanical as
well as direct digital controllers. Additional sensors are
available as accessories to optimize the economizers.
Economizers include gravity controlled, barometric relief
equalizes building pressure and ambient air pressures.
This can be a cast effective solution to prevent building
pressurization.
CO2 Sensor
Improves productivity and saves money by working with
the economizer to intake only the correct amount of
outside air for ventilation. As occupants fill your building,
the CO2 sensor detects their presence through increasing
CO2 levels, and opens the economizer appropriately.
When the occupants leave, the CO2 levels decrease, and
the sensor appropriately closes the economizer. This
intelligent control of the ventilation air, called Demand
Control Ventilation (DCV) reduces the overall load on the
rooftop, saving money.
Smoke Detectors
Trust the experts. Smoke detectors make your application
safer and your job easier. Bryant smoke detectors
immediately shut down the rooftop unit when smoke is
detected. They are available, installed by the factory, for
supply air, return air, or both.
Louvered Hail Guards
Sleek, louvered panels protect the condenser coil from
hail damage, foreign objects, and incidental contact.
Convenience Outlet (powered or un--powered)
Lower service bills by including a convenience outlet in
your specification. Bryant will install this service feature
at our factory, powered. Provides a convenient, 15 amp,
115V GFCI receptacle.
Power Exhaust Pressure Relief
Superior internal building pressure control. This
field-- installed accessory may eliminate the need for
costly, external pressure control fans.
RTU--MP, Multi--protocol Controller
Connect the rooftop to an existing BAS without needing
complicated translators or adapter modules using the
RTU-- MP controller. This new controller speaks the 4
most common building automation system languages
(Bacnet, Modbus, N2, and Lonworks). Use this controller
when you have an existing BAS.
Time Guard II Control Circuit
This accessory protects your compressor by preventing
short-- cycling in the event of some other failure, prevents
the compressor from restarting for 30 seconds after
stopping. Not required with RTU-- MP or authorized
commercial thermostats.
Filter or Fan Status Switches
Use these differential pressure switches to detect a filter
clog or indoor fan motor failure. When used in
conjunction with a compatible unit controller/thermostat,
the switches will activate an alarm to warn the appropriate
personnel.
Motorized 2--Position Damper
The new Bryant 2-- position, motorized outdoor air damper
admits up to 100% outside air. Using reliable, gear-- driven
technology, the 2-- position damper opens to allow
ventilation air and closes when the rooftop stops, stopping
unwanted infiltration.
Manual OA Damper
Manual outdoor air dampers are an economical way to
bring in ventilation air. The dampers are available in 25%
and 50% versions.
6
FACTORY OPTIONS AND/OR ACCESSORIES (cont.)
Motormaster Head Pressure Controller
Thru--the--Base Connections
The Motormaster motor controller is a low ambient, head
pressure controller kit that is designed to maintain the
unit’s condenser head pressure during periods of low
ambient cooling operation. This device should be used as
an alternative to economizer free cooling not when
economizer usage is either not appropriate or desired. The
Motormaster will either cycle the outdoor-- fan motors or
operate them at reduced speed to maintain the unit
operation, depending on the model.
Thru-- the-- base connections, available as either an
accessory or as a factory option, are necessary to ensure
proper connection and seal when routing wire and piping
through the rooftop’s basepan and curb. These couplings
eliminate roof penetration and should be considered for
gas lines, main power lines, as well as control power.
Some applications need larger horsepower motors, some
need more airflow, and some need both. Regardless of the
case, your Bryant expert has a factory installed
combination to meet your application. A wide selection of
motors and pulleys (drives) are available, factory
installed, to handle nearly any application.
Bryant offers a full-- line of field-- installed accessory
heaters. The heaters are very easy to use, install and are
all pre-- engineered and certified.
548J
Alternate Motors and Drives
Electric Heaters
7
Table 2 – ARI COOLING RATING TABLES
548J*
04A
05A
06A
07A
08D
09D
NOMINAL
CAPACITY
(TONS)
3
4
5
6
7.5
8.5
NET COOLING
CAPACITY
(BTUH)
37,000
47,000
61,500
70,000
88,000
99,000
COOLING MODE
TOTAL
POWER
(kW)
3.3
4.1
5.5
6.3
7.8
8.8
SEER
EER
IPLV
13.40**
13.10**
13.20**
N/A
N/A
N/A
11.00
11.20
11.15
11.10
11.20
11.20
N/A
N/A
N/A
N/A
12.40
12.40
548J
NOTE:
All AHRI ratings are based on 230, 460 and 575 volt.
**
Electric Drive (direct drive) X13 5 speed/torque motor. SEER rating is 13.0 for belt drive.
NA Not applicable
548J*
HSPF
04A
05A
06A
07A
08D
09D
7.70
7.70
7.70
N/A
N/A
N/A
LEGEND
ARI
ASHRAE
COP
EER
HSPF
IPLV
SEER
HEATING MODE
HEATING, LOW
CAPACITY
COP
(BTUH)
18,200
N/A
23,600
N/A
31,200
N/A
34,800
2.25
48,000
2.25
54,500
2.25
--- Air--- Conditioning, Heating and Refrigeration
Institute
--- American Society of Heating, Refrigerating
and Air Conditioning, Inc.
--- Coefficient of Performance
--- Energy Efficiency Ratio
--- Heating Seasonal Performance Factor
--- Integrated Part Load Value
--- Seasonal Energy Efficiency Ratio
HEATING, HIGH
CAPACITY
(BTUH)
35,600
45,500
58,000
67,000
86,000
96,000
COP
N/A
N/A
N/A
3.30
3.30
3.30
NOTES:
1. Rated and certified under ARI Standard 210/240--- 06 or
340/360--- 07, as appropriate.
2. Ratings are based on:
Cooling Standard: 80_F (27_C) db, 67_F (19_C) wb indoor air
temp and 95_F db outdoor air temp.
IPLV Standard: 80_F (27_C) db, 67_F (19_C) wb indoor air
temp and 80_F (27_C) db outdoor air temp.
3. All 548J units comply with ASHRAE 90.1 2001, 2004 Energy
Standard for minimum SEER and EER requirements.
4. Where appropriate, 548J units comply with US Energy Policy
Act (2005). Refer to state and local codes or visit the following
website: http://bcap --- energy. org to determine if compliance
with this standard pertains to your state, territory, or
municipality.
This product has been designed and manufactured to
meet Energy Star® criteria for energy efficiency.
However, proper refrigerant charge and proper air flow
are critical to achieve rated capacity and efficiency.
Installation of this product should follow all
manufacturer’s refrigerant charging and air flow
instructions. Failure to confirm proper charge and
air flow may reduce energy efficiency and shorten
equipment life.
8
Table 3 – MINIMUM - MAXIMUM AIRFLOWS ELECTRIC HEAT
UNIT
548J*04
548J*05
548J*06
548J*07
548J*08
548J*09
COOLING
MINIMUM
900
1200
1500
1800
2250
2550
ELECTRIC HEATERS
MINIMUM
MAXIMUM
900
1500
1200
2000
1500
2500
1800
3000
2250**
3750
2250**
4250
MAXIMUM
1500
2000
2500
3000
3750
4250
**Minimum electric heat CFM exceptions :
UNIT VOLTAGE
HEATER kW
UNIT
CONFIGURATION
548J*08
548J*09
575
17.0
34.0
Horizontal or Vertical
REQUIRED MINIMUM
CFM
2800
2350
Table 4 – SOUND PERFORMANCE TABLE
548J*
04A
05A
06A
07A
08D
09D
LEGEND
dB --- Decibel
A ---WEIGHTED
77
80
80
78
82
84
63
78.9
90.4
92.7
88.0
89.7
90.8
125
81.7
84.6
84.9
79.5
81.5
85.2
OUTDOOR SOUND (DB)
250
500
74.9
72.5
77.6
77.5
79
76.7
76.2
75.8
80.5
79.2
81.6
79.5
1000
70.3
74.8
73.8
72.5
77.1
78.1
2000
65.6
70.6
69.6
68.6
73.2
74.0
4000
65.6
68.0
66.4
65.7
70.2
70.4
8000
62.6
64.2
62.8
62.4
67.4
66.5
NOTES:
1. Outdoor sound data is measure in accordance with ARI standard 270--- 95.
2. Measurements are expressed in terms of sound power. Do not
compare these values to sound pressure values because sound
pressure accounts for specific environmental factors which do
not match individual applications. Sound power values are independent of the environment and therefore more accurate.
3. A--- weighted sound ratings filter out very high and very low
frequencies, to better approximate the response of an “average” human ear. A--- weighted measurements for Bryant units
are taken in accordance with 270--- 95.
9
548J
UNIT
548J*05
548J*06
548J*07
1 / 1 / Scroll
9 --- 8 / --42 / --Acutrol
630 / 505
27 / 44
1 / 1 / Scroll
10 --- 3 / --42 / --Acutrol
630 / 505
27 / 44
1 / 1 / Scroll
12 --- 13 / --42 / --Acutrol
630 / 505
27 / 44
1 / 1 / Scroll
16 --- 13 / --56 / --Acutrol
630 / 505
27 / 44
Cu / Al
3/8” RTPF
3 / 15
5.5
3/4”
Cu / Al
3/8” RTPF
3 / 15
5.5
3/4”
Cu / Al
3/8” RTPF
4/ 15
7.3
3/4”
Cu / Al
3/8” RTPF
4/ 15
7.3
3/4”
Standard Static
1 phase
Motor Qty / Drive Type
Max BHP
RPM Range
Motor Frame Size
Fan Qty / Type
Fan Diameter x Length (in)
1 / Direct
1
600--- 1200
48
1 / Centrifugal
10 x 10
1 / Direct
1
600--- 1200
48
1 / Centrifugal
10 x 10
1 / Direct
1
600--- 1200
48
1 / Centrifugal
11 x 10
N/A
Standard Static
3 phase
3 - 6 TONS
548J*04
Motor Qty / Drive Type
Max BHP
RPM Range
Motor Frame Size
Fan Qty / Type
Fan Diameter x Length (in)
1 / Direct
1
600--- 1200
48
1 / Centrifugal
10 x 10
1 / Direct
1
600--- 1200
48
1 / Centrifugal
10 x 10
1 / Direct
1
600--- 1200
48
1 / Centrifugal
11 x 10
1 / Belt
1.5
878--- 1192
56
1 / Centrifugal
10 x 10
Medium Static
3 phase
(COOLING)
Motor Qty / Drive Type
Max BHP
RPM Range
Motor Frame Size
Fan Qty / Type
Fan Diameter x Length (in)
1 / Belt
1.5
819--- 1251
56
1 / Centrifugal
10 x 10
1 / Belt
1.5
920--- 1303
56
1 / Centrifugal
10 x 10
1 / Belt
2
1066--- 1380
56
1 / Centrifugal
10 x 10
1 / Belt
2.9
1066--- 1380
56
1 / Centrifugal
10 x 10
High Static
3 phase
Table 5 – PHYSICAL DATA
Motor Qty / Drive Type
Max BHP
RPM Range
Motor Frame Size
Fan Qty / Type
Fan Diameter x Length (in)
1 / Belt
2
1035--- 1466
56
1 / Centrifugal
10 x 10
1 / Belt
2
1035--- 1466
56
1 / Centrifugal
10 x 10
1 / Belt
2.9
1208--- 1639
56
1 / Centrifugal
10 x 10
1 / Belt
2.9
1208--- 1639
56
1 / Centrifugal
10 x 10
Material
Coil type
Rows / FPI
Total Face Area (ft2)
Cu / Al
3/8” RTPF
2 / 17
10.7
Cu / Al
3/8” RTPF
2 / 17
12.7118055
Cu / Al
3/8” RTPF
2 / 17
15
Cu / Al
3/8” RTPF
2 / 17
21.25
Qty / Motor Drive Type
Motor HP / RPM
Fan diameter (in)
1 / direct
1/8 / 825
22
1 / direct
1/4 / 1100
22
1 / direct
1/4 / 1100
22
1 / direct
1/4 / 1100
22
2 / 16 x 25 x 2
1 / 20 x 24 x 1
2 / 16 x 25 x 2
1 / 20 x 24 x 1
4 / 16 x 16 x 2
1 / 20 x 24 x 1
4 / 16 x 16 x 2
1 / 20 x 24 x 1
Refrigeration System
548J
# Circuits / # Comp. / Type
Puronr refrig. (R--- 410A) charge per circuit A/B (lbs--- oz)
Oil A/B (oz)
Metering Device
High--- pressure Trip / Reset (psig)
Loss of Charge Pressure Trip / Reset (psig)
Evap. Coil
Material
Coil type
Rows / FPI
Total Face Area (ft2)
Condensate Drain Conn. Size
Evap. Fan and Motor
n / Centrifugal
Cond. Coil
Cond. fan / motor
Filters
RA Filter # / Size (in)
OA inlet screen # / Size (in)
10
7.5 - 8.5 TONS
548J*08
548J*09
# Circuits / # Comp. / Type
Puronr refrig. (R--- 410A) charge per circuit A/B (lbs--- oz)
Oil A/B (oz)
Metering Device
High--- pressure Trip / Reset (psig)
Loss of Charge Pressure Trip / Reset (psig)
Evap. Coil
Material
Coil type
Rows / FPI
Total Face Area (ft2)
Condensate Drain Conn. Size
Evap. Fan and Motor
Motor Qty / Drive Type
Max BHP
RPM Range
Motor Frame Size
Fan Qty / Type
Fan Diameter x Length (in)
2 / 2 / Scroll
10 --- 3 / 10 --- 3
42 / 42
Accutrol
630 / 505
27 / 44
2 / 2 / Scroll
11 --- 2 / 11 --- 2
42 / 42
Accutrol
630 / 505
27 / 44
Cu / Al
3/8” RTPF
3 / 15
11.1
3/4”
Cu / Al
3/8” RTPF
4 / 15
11.1
3/4”
1 / Belt
1.2
460--- 652
56
1 / Centrifugal
15 x 15
1 / Belt
1.2
460--- 652
56
1 / Centrifugal
15 x 15
Medium Static
3 phase
(COOLING)
Motor Qty / Drive Type
Max BHP
RPM Range
Motor Frame Size
Fan Qty / Type
Fan Diameter x Length (in)
1 / Belt
2.9
591--- 838
56
1 / Centrifugal
15 x 15
1 / Belt
2.9
591--- 838
56
1 / Centrifugal
15 x 15
High Static
3 phase
Table 6 – PHYSICAL DATA
Motor Qty / Drive Type
Max BHP
RPM Range
Motor Frame Size
Fan Qty / Type
Fan Diameter x Length (in)
1 / Belt
2.9
838--- 1084
56
1 / Centrifugal
15 x 15
1 / Belt
2.9
838--- 1084
56
1 / Centrifugal
15 x 15
Material
Coil type
Rows / FPI
Total Face Area (ft2)
Cu / Al
3/8” RTPF
2 / 17
25.1
Cu / Al
3/8” RTPF
2 / 17
25.1
Qty / Motor Drive Type
Motor HP / RPM
Fan diameter (in)
2 / direct
1/4 / 1100
22.0
2 / direct
1/4 / 1100
22.0
4 / 16 x 20 x 2
1 / 20 x 24 x 1
4 / 20 x 20 x 2
1 / 20 x 24 x 1
Cond. Coil
Cond. fan / motor
Filters
RA Filter # / Size (in)
OA inlet screen # / Size (in)
11
548J
Standard Static
3 phase
Refrigeration System
208/230---1---60 NOM. V ---PH ---HZ
UNIT
Table 7 – ELECTRIC HEAT - ELECTRICAL DATA
IFM
TYPE
STD
DD
208/230---3---60
548J*04
548J
STD
DD
MED
BD
HIGH
BD
460---3---60
STD
DD
MED
BD
HIGH
BD
ELECTRIC HEATER
PART NUMBER
CRHEATERXXXXXX
NOM
PWR
(kW)
APP
PWR
(kW)
101A00
102A00
103B00
104B00
102A00,102A00
101A00
102A00
103B00
104B00
105A00
101A00
102A00
103B00
104B00
105A00
101A00
102A00
103B00
104B00
105A00
106A00
107A00
108A00
109A00
106A00
107A00
108A00
109A00
106A00
107A00
108A00
109A00
4.4
6.5
8.7
10.5
13.0
4.4
6.5
8.7
10.5
16.0
4.4
6.5
8.7
10.5
16.0
4.4
6.5
8.7
10.5
16.0
6.0
8.8
11.5
14.0
6.0
8.8
11.5
14.0
6.0
8.8
11.5
14.0
3.3/4.0
4.9/6.0
6.5/8.0
7.9/9.6
9.8/11.9
3.3/4.0
4.9/6.0
6.5/8.0
7.9/9.6
12.0/14.7
3.3/4.0
4.9/6.0
6.5/8.0
7.9/9.6
12.0/14.7
3.3/4.0
4.9/6.0
6.5/8.0
7.9/9.6
12.0/14.7
5.5
8.1
10.6
12.9
5.5
8.1
10.6
12.9
5.5
8.1
10.6
12.9
3 TONS
SINGLE POINT KIT PART NUMBER
CRSINGLEXXXXXX
WITHOUT C.O. or UNPWRD C.O.
WITH PWRD C.O.
WITHOUT P.E.
WITH P.E.
WITHOUT P.E.
WITH P.E.
037A00
040A00
040A00
040A00
041A00
----037A00
037A00
038A00
------037A00
038A00
------037A00
038A00
-------------------------
037A00
040A00
040A00
040A00
041A00
----037A00
037A00
038A00
----037A00
037A00
038A00
----037A00
037A00
038A00
-------------------------
037A00
040A00
040A00
040A00
041A00
----037A00
038A00
038A00
----037A00
037A00
038A00
----037A00
037A00
038A00
-------------------------
040A00
040A00
040A00
040A00
041A00
--037A00
037A00
038A00
038A00
----037A00
038A00
038A00
----037A00
038A00
038A00
-------------------------
--- No Single Point Kit required
LEGEND
APP PWR
--- 208 / 230V / 460V / 575V
BD
--- Belt drive motor
C.O.
--- Convenient outlet
DD
--- Electric Drive X13 5 speed/torque motor
FLA
--- Full load amps
IFM
--- Indoor fan motor
NOM PWR
--- 240V / 480V / 600V
P.E.
--- Power exhaust
PWRD
--- Powered convenient outlet
UNPWRD
--- Unpowered convenient outlet
12
IFM
TYPE
STD
DD
208/230---3---60
548J*05
STD
DD
MED
BD
HIGH
BD
460---3---60
STD
DD
MED
BD
HIGH
BD
ELECTRIC HEATER
PART NUMBER
CRHEATERXXXXXX
101A00
103B00
102A00,102A00
103B00,103B00
104B00,104B00
102A00
103B00
105A00
104B00,104B00
102A00
103B00
105A00
104B00,104B00
102A00
103B00
105A00
104B00,104B00
106A00
108A00
109A00
108A00,108A00
106A00
108A00
109A00
108A00,108A00
106A00
108A00
109A00
108A00,108A00
NOM
PWR
(kW)
4.4
8.7
13.0
17.4
21.0
6.5
8.7
16.0
21.0
6.5
8.7
16.0
21.0
6.5
8.7
16.0
21.0
6.0
11.5
14.0
23.0
6.0
11.5
14.0
23.0
6.0
11.5
14.0
23.0
APP
PWR
(kW)
3.3/4.0
6.5/8.0
9.8/11.9
13.1/16.0
15.8/19.3
4.9/6.0
6.5/8.0
12.0/14.7
15.8/19.3
4.9/6.0
6.5/8.0
12.0/14.7
15.8/19.3
4.9/6.0
6.5/8.0
12.0/14.7
15.8/19.3
5.5
10.6
12.9
21.1
5.5
10.6
12.9
21.1
5.5
10.6
12.9
21.1
4 TONS
SINGLE POINT KIT PART NUMBER
CRSINGLEXXXXXX
WITHOUT C.O. or UNPWRD C.O.
WITH PWRD C.O.
WITHOUT P.E.
WITH P.E.
WITHOUT P.E.
WITH P.E.
037A00
040A00
041A00
041A00
041A00
--037A00
038A00
039A00
----038A00
039A00
----038A00
039A00
------037A00
------037A00
------037A00
040A00
040A00
041A00
041A00
041A00
--037A00
038A00
039A00
--037A00
038A00
039A00
--037A00
038A00
039A00
------037A00
------037A00
------037A00
040A00
040A00
041A00
041A00
041A00
--037A00
038A00
039A00
--037A00
038A00
039A00
--037A00
038A00
039A00
------037A00
------037A00
------037A00
040A00
040A00
041A00
041A00
041A00
037A00
037A00
038A00
039A00
--037A00
038A00
039A00
--037A00
038A00
039A00
------037A00
------037A00
------037A00
--- No Single Point Kit required
LEGEND
APP PWR
--- 208 / 230V / 460V / 575V
BD
--- Belt drive motor
C.O.
--- Convenient outlet
DD
--- Electric Drive X13 5 speed/torque motor
FLA
--- Full load amps
IFM
--- Indoor fan motor
NOM PWR
--- 240V / 480V / 600V
P.E.
--- Power exhaust
PWRD
--- Powered convenient outlet
UNPWRD
--- Unpowered convenient outlet
13
548J
208/230---1---60 NOM. V ---PH ---HZ
UNIT
Table 7 - (cont.) ELECTRIC HEAT - ELECTRICAL DATA
208/230---1---60 NOM. V ---PH ---HZ
UNIT
Table 7 - (cont.) ELECTRIC HEAT - ELECTRICAL DATA
IFM
TYPE
STD
DD
548J*06
208/230---3---60
548J
STD
DD
MED
BD
HIGH
BD
460---3---60
STD
DD
MED
BD
HIGH
BD
ELECTRIC HEATER
PART NUMBER
CRHEATERXXXXXX
102A00
103B00
102A00,102A00
103B00,103B00
104B00,104B00
102A00
104B00
105A00
104B00,104B00
104B00,105A00
102A00
104B00
105A00
104B00,104B00
104B00,105A00
102A00
104B00
105A00
104B00,104B00
104B00,105A00
106A00
108A00
109A00
108A00,108A00
108A00,109A00
106A00
108A00
109A00
108A00,108A00
108A00,109A00
106A00
108A00
109A00
108A00,108A00
108A00,109A00
NOM
PWR
(kW)
6.5
8.7
13.0
17.4
21.0
6.5
10.5
16.0
21.0
26.5
6.5
10.5
16.0
21.0
26.5
6.5
10.5
16.0
21.0
26.5
6.0
11.5
14.0
23.0
25.5
6.0
11.5
14.0
23.0
25.5
6.0
11.5
14.0
23.0
25.5
APP
PWR
(kW)
4.9/6.0
6.5/8.0
9.8/11.9
13.1/16.0
15.8/19.3
4.9/6.0
7.9/9.6
12.0/14.7
15.8/19.3
19.9/24.3
4.9/6.0
7.9/9.6
12.0/14.7
15.8/19.3
19.9/24.3
4.9/6.0
7.9/9.6
12.0/14.7
15.8/19.3
19.9/24.3
5.5
10.6
12.9
21.1
23.4
5.5
10.6
12.9
21.1
23.4
5.5
10.6
12.9
21.1
23.4
5 TONS
SINGLE POINT KIT PART NUMBER
CRSINGLEXXXXXX
WITHOUT C.O. or UNPWRD C.O.
WITH PWRD C.O.
WITHOUT P.E.
WITH P.E.
WITHOUT P.E.
WITH P.E.
040A00
040A00
041A00
041A00
041A00
--038A00
038A00
039A00
039A00
--037A00
038A00
039A00
039A00
--038A00
038A00
039A00
039A00
------037A00
037A00
------037A00
037A00
------037A00
037A00
040A00
040A00
041A00
041A00
041A00
--038A00
038A00
039A00
039A00
--037A00
038A00
039A00
039A00
--038A00
038A00
039A00
039A00
------037A00
037A00
------037A00
037A00
------037A00
037A00
040A00
040A00
041A00
041A00
041A00
037A00
038A00
038A00
039A00
039A00
--038A00
038A00
039A00
039A00
037A00
038A00
038A00
039A00
039A00
------037A00
037A00
------037A00
037A00
------037A00
037A00
040A00
040A00
041A00
041A00
041A00
037A00
038A00
038A00
039A00
039A00
037A00
038A00
038A00
039A00
039A00
037A00
038A00
038A00
039A00
039A00
------037A00
037A00
------037A00
037A00
------037A00
037A00
--- No Single Point Kit required
LEGEND
APP PWR
--- 208 / 230V / 460V / 575V
BD
--- Belt drive motor
C.O.
--- Convenient outlet
DD
--- Electric Drive X13 5 speed/torque motor
FLA
--- Full load amps
IFM
--- Indoor fan motor
NOM PWR
--- 240V / 480V / 600V
P.E.
--- Power exhaust
PWRD
--- Powered convenient outlet
UNPWRD
--- Unpowered convenient outlet
14
IFM
TYPE
208/230--- 3--- 60
STD
MED
548J*07
HIGH
460--- 3--- 60
STD
MED
HIGH
ELECTRIC HEATER
PART NUMBER
CRHEATERXXXXXX
102A00
104B00
105A00
104B00,104B00
104B00,105A00
102A00
104B00
105A00
104B00,104B00
104B00,105A00
102A00
104B00
105A00
104B00,104B00
104B00,105A00
106A00
108A00
109A00
108A00,108A00
108A00,109A00
106A00
108A00
109A00
108A00,108A00
108A00,109A00
106A00
108A00
109A00
108A00,108A00
108A00,109A00
NOM
PWR
(kW)
6.5
10.5
16.0
21.0
26.5
6.5
10.5
16.0
21.0
26.5
6.5
10.5
16.0
21.0
26.5
6.0
11.5
14.0
23.0
25.5
6.0
11.5
14.0
23.0
25.5
6.0
11.5
14.0
23.0
25.5
APP
PWR
(kW)
4.9/6.0
7.9/9.6
12.0/14.7
15.8/19.3
19.9/24.3
4.9/6.0
7.9/9.6
12.0/14.7
15.8/19.3
19.9/24.3
4.9/6.0
7.9/9.6
12.0/14.7
15.8/19.3
19.9/24.3
5.5
10.6
12.9
21.1
23.4
5.5
10.6
12.9
21.1
23.4
5.5
10.6
12.9
21.1
23.4
6 TONS
SINGLE POINT KIT PART NUMBER
CRSINGLEXXXXXX
WITHOUT C.O. or UNPWRD C.O.
WITH PWRD C.O.
WITHOUT P.E.
WITH P.E.
WITHOUT P.E.
WITH P.E.
--038A00
038A00
039A00
039A00
037A00
038A00
038A00
039A00
039A00
037A00
038A00
038A00
039A00
039A00
------037A00
037A00
------037A00
037A00
------037A00
037A00
037A00
038A00
038A00
039A00
039A00
037A00
038A00
038A00
039A00
039A00
037A00
038A00
038A00
039A00
039A00
------037A00
037A00
------037A00
037A00
------037A00
037A00
037A00
038A00
038A00
039A00
039A00
037A00
038A00
038A00
039A00
039A00
037A00
038A00
038A00
039A00
039A00
------037A00
037A00
------037A00
037A00
------037A00
037A00
037A00
038A00
038A00
039A00
039A00
037A00
038A00
038A00
039A00
039A00
037A00
038A00
038A00
039A00
039A00
------037A00
037A00
------037A00
037A00
------037A00
037A00
--- No Single Point Kit required
LEGEND
APP PWR
--- 208 / 230V / 460V / 575V
C.O.
--- Convenient outlet
FLA
--- Full load amps
IFM
--- Indoor fan motor
NOM PWR
--- 240V / 480V / 600V
P.E.
--- Power exhaust
PWRD
--- Powered convenient outlet
UNPWRD
--- Unpowered convenient outlet
15
548J
NOM. V ---PH ---HZ
UNIT
Table 7 - (cont.) ELECTRIC HEAT - ELECTRICAL DATA
NOM. V ---PH ---HZ
UNIT
Table 7 - (cont.) ELECTRIC HEAT - ELECTRICAL DATA
IFM
TYPE
548J
208/230---3---60
STD
MED
STD
460---3---60
548J*08 (2---STAGE COOL)
HIGH
MED
575---3---60
HIGH
STD
MED
HIGH
ELECTRIC HEATER
PART NUMBER
CRHEATERXXXXXX
117A00
110A00
111A00
112A00
112A00,117A00
117A00
110A00
111A00
112A00
112A00,117A00
117A00
110A00
111A00
112A00
112A00,117A00
116A00
113A00
114A00
115A00
114A00,116A00
116A00
113A00
114A00
115A00
114A00,116A00
116A00
113A00
114A00
115A00
114A00,116A00
118A00
119A00
118A00
119A00
118A00
119A00
NOM
PWR
(kW)
10.4
16.0
24.8
32.0
42.4
10.4
16.0
24.8
32.0
42.4
10.4
16.0
24.8
32.0
42.4
13.9
16.5
27.8
33.0
41.7
13.9
16.5
27.8
33.0
41.7
13.9
16.5
27.8
33.0
41.7
17.0
34.0
17.0
34.0
17.0
34.0
APP
PWR
(kW)
7.8/9.6
12.0/14.7
18.6/22.8
24.0/29.4
31.8/38.9
7.8/9.6
12.0/14.7
18.6/22.8
24.0/29.4
31.8/38.9
7.8/9.6
12.0/14.7
18.6/22.8
24.0/29.4
31.8/38.9
12.8
15.2
25.5
30.3
38.3
12.8
15.2
25.5
30.3
38.3
12.8
15.2
25.5
30.3
38.3
17.0
34.0
17.0
34.0
17.0
34.0
7.5 TONS
SINGLE POINT KIT PART NUMBER
CRSINGLEXXXXXX
WITHOUT C.O. or UNPWRD C.O.
WITH PWRD C.O.
WITHOUT P.E.
WITH P.E.
WITHOUT P.E.
WITH P.E.
049A00
049A00
051A00
051A00
053A00
049A00
049A00
051A00
051A00
053A00
049A00
049A00
051A00
051A00
053A00
047A00
047A00
047A00
050A00
052A00
047A00
047A00
050A00
050A00
052A00
047A00
047A00
050A00
050A00
052A00
047A00
050A00
047A00
050A00
047A00
050A00
049A00
049A00
051A00
051A00
053A00
049A00
049A00
051A00
051A00
053A00
049A00
049A00
051A00
051A00
053A00
047A00
047A00
050A00
050A00
052A00
047A00
047A00
050A00
050A00
052A00
047A00
047A00
050A00
050A00
052A00
047A00
050A00
047A00
050A00
047A00
050A00
049A00
049A00
051A00
051A00
053A00
049A00
049A00
051A00
051A00
053A00
049A00
049A00
051A00
051A00
053A00
047A00
047A00
050A00
050A00
052A00
047A00
047A00
050A00
050A00
052A00
047A00
047A00
050A00
050A00
052A00
047A00
050A00
047A00
050A00
047A00
050A00
049A00
049A00
051A00
051A00
053A00
049A00
049A00
051A00
051A00
053A00
049A00
049A00
051A00
051A00
053A00
047A00
047A00
050A00
050A00
052A00
047A00
047A00
050A00
050A00
052A00
047A00
047A00
050A00
050A00
052A00
047A00
050A00
047A00
050A00
047A00
050A00
--- No Single Point Kit required
LEGEND
APP PWR
--- 208 / 230V / 460V / 575V
C.O.
--- Convenient outlet
FLA
--- Full load amps
IFM
--- Indoor fan motor
NOM PWR
--- 240V / 480V / 600V
P.E.
--- Power exhaust
PWRD
--- Powered convenient outlet
UNPWRD
--- Unpowered convenient outlet
16
IFM
TYPE
208/230--- 3--- 60
STD
MED
STD
460--- 3--- 60
548J*09 (2---STAGE COOL)
HIGH
MED
575--- 3--- 60
HIGH
STD
MED
HIGH
ELECTRIC HEATER
PART NUMBER
CRHEATERXXXXXX
117A00
110A00
111A00
112A00
112A00,117A00
117A00
110A00
111A00
112A00
112A00,117A00
117A00
110A00
111A00
112A00
112A00,117A00
116A00
113A00
114A00
115A00
114A00,116A00
116A00
113A00
114A00
115A00
114A00,116A00
116A00
113A00
114A00
115A00
114A00,116A00
118A00
119A00
118A00
119A00
118A00
119A00
NOM
PWR
(kW)
10.4
16.0
24.8
32.0
42.4
10.4
16.0
24.8
32.0
42.4
10.4
16.0
24.8
32.0
42.4
13.9
16.5
27.8
33.0
41.7
13.9
16.5
27.8
33.0
41.7
13.9
16.5
27.8
33.0
41.7
17.0
34.0
17.0
34.0
17.0
34.0
APP
PWR
(kW)
7.8/9.6
12.0/14.7
18.6/22.8
24.0/29.4
31.8/38.9
7.8/9.6
12.0/14.7
18.6/22.8
24.0/29.4
31.8/38.9
7.8/9.6
12.0/14.7
18.6/22.8
24.0/29.4
31.8/38.9
12.8
15.2
25.5
30.3
38.3
12.8
15.2
25.5
30.3
38.3
12.8
15.2
25.5
30.3
38.3
17.0
34.0
17.0
34.0
17.0
34.0
8.5 TONS
SINGLE POINT KIT PART NUMBER
CRSINGLEXXXXXX
WITHOUT C.O. or UNPWRD C.O.
WITH PWRD C.O.
WITHOUT P.E.
WITH P.E.
WITHOUT P.E.
WITH P.E.
049A00
049A00
051A00
051A00
053A00
049A00
049A00
051A00
051A00
053A00
049A00
049A00
051A00
051A00
053A00
047A00
047A00
050A00
050A00
052A00
047A00
047A00
050A00
050A00
052A00
047A00
047A00
050A00
050A00
052A00
047A00
050A00
047A00
050A00
047A00
050A00
049A00
049A00
051A00
051A00
053A00
049A00
049A00
051A00
051A00
053A00
049A00
049A00
051A00
051A00
053A00
047A00
047A00
050A00
050A00
052A00
047A00
047A00
050A00
050A00
052A00
047A00
047A00
050A00
050A00
052A00
047A00
050A00
047A00
050A00
047A00
050A00
049A00
049A00
051A00
051A00
053A00
049A00
049A00
051A00
051A00
053A00
049A00
049A00
051A00
051A00
053A00
047A00
047A00
050A00
050A00
052A00
047A00
047A00
050A00
050A00
052A00
047A00
047A00
050A00
050A00
052A00
047A00
050A00
047A00
050A00
047A00
050A00
049A00
049A00
051A00
051A00
053A00
049A00
049A00
051A00
051A00
053A00
049A00
049A00
051A00
051A00
053A00
047A00
047A00
050A00
050A00
052A00
047A00
047A00
050A00
050A00
052A00
047A00
047A00
050A00
050A00
052A00
047A00
050A00
047A00
050A00
047A00
050A00
--- No Single Point Kit required
LEGEND
APP PWR
--- 208 / 230V / 460V / 575V
C.O.
--- Convenient outlet
FLA
--- Full load amps
IFM
--- Indoor fan motor
NOM PWR
--- 240V / 480V / 600V
P.E.
--- Power exhaust
PWRD
--- Powered convenient outlet
UNPWRD
--- Unpowered convenient outlet
17
548J
NOM. V ---PH ---HZ
UNIT
Table 7 - (cont.) ELECTRIC HEAT - ELECTRICAL DATA
548J
WEIGHTS & DIMENSIONS
C09018
Fig. 1 -- Dimensions 548J 04--07
18
548J
WEIGHTS & DIMENSIONS (cont.)
C09019
Fig. 2 -- Dimensions 548J 04--07
C
D
B
A
C08337
Fig. 3 -- Service Clearance
LOC
A
B
C
D
DIMENSION
48” (1219 mm)
18” (457 mm)
18” (457 mm)
12” (305 mm)
42” (1067 mm)
36” (914 mm)
Special
36” (914 mm)
18” (457 mm)
42” (1067 mm)
36” (914 mm)
CONDITION
Unit disconnect is mounted on panel
No disconnect, convenience outlet option
Recommended service clearance
Minimum clearance
Surface behind servicer is grounded (e.g., metal, masonry wall)
Surface behind servicer is electrically non--- conductive (e.g., wood, fiberglass)
Check for sources of flue products within 10--- ft of unit fresh air intake hood
Side condensate drain is used
Minimum clearance
Surface behind servicer is grounded (e.g., metal, masonry wall, another unit)
Surface behind servicer is electrically non--- conductive (e.g., wood, fiberglass)
19
WEIGHTS & DIMENSIONS (cont.)
ROOFCURB
ACCESSORY
548J*04-07A
548J
1’ - 2”
CRRFCURB001A01 [356]
CRRFCURB002A01 2’ - 0”
[610]
UNIT SIZE
C08560
Fig. 4 -- Curb Dimensions 548J 04--07
20
548J
WEIGHTS & DIMENSIONS (cont.)
Vertical Connections / Economizer
Horizontal Connections / Economizer
C08679
Fig. 5 -- Dimensions 548J 08--09
21
548J
WEIGHTS & DIMENSIONS (cont.)
C08680
Fig. 6 -- Dimensions 548J 08--09
C
D
B
A
C08337
Fig. 7 -- Service Clearance
LOC
A
B
C
D
DIMENSION
48” (1219 mm)
18” (457 mm)
18” (457 mm)
12” (305 mm)
42” (1067 mm)
36” (914 mm)
Special
36” (914 mm)
18” (457 mm)
42” (1067 mm)
36” (914 mm)
CONDITION
Unit disconnect is mounted on panel
No disconnect, convenience outlet option
Recommended service clearance
Minimum clearance
Surface behind servicer is grounded (e.g., metal, masonry wall)
Surface behind servicer is electrically non--- conductive (e.g., wood, fiberglass)
Check for sources of flue products within 10--- ft of unit fresh air intake hood
Side condensate drain is used
Minimum clearance
Surface behind servicer is grounded (e.g., metal, masonry wall, another unit)
Surface behind servicer is electrically non--- conductive (e.g., wood, fiberglass)
22
WEIGHTS & DIMENSIONS (cont.)
1’ - 2”
CRRFCURB003A01
[356]
CRRFCURB004A01 2’ - 0”
[610]
UNIT SIZE
548J08, 09
548J
ROOFCURB
ACCESSORY
C08561
Fig. 8 -- Curb Dimensions 548J 08--09
23
APPLICATION DATA
Min operating ambient temp (cooling):
Sizing a rooftop
In mechanical cooling mode, your Bryant rooftop can
safely operate down to an outdoor ambient temperature of
25_F (-- 4_C). It is possible to provide cooling at lower
outdoor ambient temperatures by using less outside air,
economizers, and/or accessory low ambient kits.
Bigger isn’t necessarily better. While an air conditioner
needs to have enough capacity to meet the load, it doesn’t
need excess capacity. In fact, having excess capacity
typically results in very poor part load performance and
humidity control.
Max operating ambient temp (cooling):
Using higher design temperatures than ASHRAE
recommends for your location, adding “safety factors” to
the calculated load, and rounding up to the next largest
unit, are all signs of oversizing air conditioners.
Oversizing can cause short-- cycling, and short cycling
leads to poor humidity control, reduced efficiency, higher
utility bills, drastic indoor temperature swings, excessive
noise, and increased wear and tear on the air conditioner.
548J
The maximum operating ambient temperature for cooling
mode is 115_F (46_C). While cooling operation above
115_F (46_C) may be possible, it could cause either a
reduction in performance, reliability, or a protective action
by the unit’s internal safety devices.
Min and max airflow (cooling mode):
To maintain safe and reliable operation of your rooftop,
operate within the cooling airflow limits. Operating above
the max may cause blow-- off, undesired airflow noise, or
airflow related problems with the rooftop unit. Operating
below the min may cause problems with coil freeze-- up.
Rather than oversizing an air conditioner, wise contractors
and engineers “right-- size” or even slightly undersize air
conditioners. Correctly sizing an air conditioner controls
humidity better; promotes efficiency; reduces utility bills;
extends equipment life, and maintains even, comfortable
temperatures.
Airflow:
Low ambient applications
All units are draw-- though in cooling mode.
When equipped with a Bryant economizer, your rooftop
unit can cool your space by bringing in fresh, cool outside
air. In fact, when so equipped, accessory low-- ambient kit
may not be necessary. In low ambient conditions, unless
the outdoor air is excessively humid or contaminated,
economizer-- based “free cooling” is the preferred less
costly and energy conscious method.
Outdoor air application strategies:
Economizers reduce operating expenses and compressor
run time by providing a free source of cooling and a
means of ventilation to match application changing needs.
In fact, they should be considered for most applications.
Also, consider the various economizer control methods
and their benefits, as well as sensors required to
accomplish your application goals. Please contact your
local Bryant representative for assistance.
Motor limits, break horsepower (BHP):
Due to Bryant’s internal unit design, air path, and
specially designed motors, the full horsepower (maximum
continuous BHP) band, as listed in this manual, can be
used with the utmost confidence. There is no need for
extra safety factors, as Bryant’s motors are designed and
rigorously tested to use the entire, listed BHP range
without either nuisance tripping or premature motor
failure.
In low ambient applications where outside air might not
be desired (such as contaminated or excessively humid
outdoor environments), your Bryant rooftop can operate to
ambient temperatures down to - 20_F (-- 29_C) using the
recommended accessory Motor master low ambient
controller.
24
SELECTION PROCEDURE (WITH 548J*07 EXAMPLE)
(Selection software by Bryant saves time by performing many of the steps below.)
II.
Determine cooling and heating loads.
Given:
Mixed Air Drybulb
80_F (27_C)
Mixed Air Wetbulb
67_F (19_C)
Ambient Drybulb
95_F (35_C)
65.0 MBH
TCLoad
46.0 MBH
SHCLoad
45.0 MBH
HCLoad
Outdoor-Air Winter Design Temp
0_F (-- 18_C)
Indoor-Air Winter Design Temp
70_F (21_C)
Vertical Supply Air
2100 CFM
External Static Pressure
0.66 in.wg
Electrical Characteristics
230-- 3-- 60
Make an initial guess at cooling tons.
Refrig. tons = TCLoad / 12 MBH per ton
Refrig. tons = 65.0 / 12 = 5.42 tons
In this case, start by looking at the 548J*07.
III. Look up the rooftop’s TC and SHC.
Table 11 shows that, at the application’s supply air
CFM, mixed air and ambient temperatures, the
548J*07 supplies:
TCLoad = 69.0 MBH
SHCLoad = 50.7 MBH.
IV.
V.
Calculate the building Latent Heat Load.
LCLoad = TCLoad - SHCLoad
LCLoad = 65.0 MBH - 46.0 MBH = 19.0 MBH
Select electric heat.
Enter the Instantaneous and Integrated Heating Ratings, Table 17 at 2100 cfm. At 70_F (21_C) return
indoor air and 0°F (-- 18_C) air entering outdoor coil,
the integrated heating capacity after interpolation, is
24,300 Btuh. (Select integrated heating capacity
value since deductions for outdoor-coil frost and defrosting have already been made. No correction is required.)
The required heating capacity is 45,000 Btuh. Therefore, 20,700 Btuh (45,000 – 24,300) additional electric heat is required.
Determine additional electric heat capacity in kW.
20,700 Btuh
3413 Btuh/kW
= 6.1 kW of heat required.
Enter the Electric Heating Capacities table for
548J*07 at 208/230, 3-- phase. The 6.5-kW heater at
230V most closely satisfies the heating required.
6.5 kW x 3413 = 22,185 Btuh
Total unit heating capacity is 46,485 Btuh (22,185 +
24,300).
VI. Calculate RTU Latent Heat Capacity
LC = TC - SHC
LC = 69.0 MBH - 50.7 MBH = 18.3 MBH
VII. Compare RTU capacities to loads.
Compare the rooftop’s SHC and LC to the building’s
Sensible and Latent Heat Loads.
See Notes 1 and 2.
VIII. Select factory options (FIOP)
Local code requires an economizer for any unit with
TC larger than 65.0 MBH.
IX. Calculate the total static pressure.
External static pressure
Sum of FIOP/Accessory static
Total Static Pressure
X.
0.66 in. wg
+0.14 in. wg
0.80 in. wg
Look up the Indoor Fan RPM & BHP.
Table 34 shows, at 2100 CFM & ESP= 0.8,
RPM = 1268 & BHP = 1.52
XI. Determine electrical requirements
Table 25 shows the MCA and MOCP of a 548J*07
(without convenience outlet) with 6.5 kW electric
heater as:
MCA = 52.3 amps & MOCP = 60 amps
Min. Disconnect Size: FLA = 50 & LRA = 199.
Legend
BHP
FLA
HC
LC
LRA
MBH
MCA
MOCP
RPM
RTU
SHC
TC —
— Break horsepower
— Full load amps
— Heating Capacities
— Latent capacity
— Lock rotor amp
— (1,000) BTUH
— Min. circuit ampacity
— Max. over--- current protection
— Revolutions per minute
— Rooftop unit
— Sensible heat capacity
Total capacity
NOTES:
1. Selecting a unit with a SHC slightly lower than the SHCLoad is
often better than oversizing. Slightly lower SHC’s will help control indoor humidity, and prevent temperature swings.
2. If the rooftop’s capacity meets the Sensible Heat Load, but not
the Latent Heat Load.
25
548J
I.
Table 8 – COOLING CAPACITIES
548J*04
58
EAT (wb)
900 Cfm
62
67
72
76
EAT (wb)
1050 Cfm
62
67
72
76
58
EAT (wb)
1200 Cfm
62
67
72
76
58
EAT (wb)
1350 Cfm
62
67
72
76
58
EAT (wb)
62
1500 Cfm
548J
58
67
72
76
LEGEND
--Cfm
EAT(db)
EAT(wb)
SHC
TC
-------------
THC
SHC
THC
SHC
THC
SHC
THC
SHC
THC
SHC
THC
SHC
THC
SHC
THC
SHC
THC
SHC
THC
SHC
THC
SHC
THC
SHC
THC
SHC
THC
SHC
THC
SHC
THC
SHC
THC
SHC
THC
SHC
THC
SHC
THC
SHC
THC
SHC
THC
SHC
THC
SHC
THC
SHC
THC
SHC
75
31.4
27.1
33.5
24.8
38.0
21.0
42.1
16.7
----33.7
29.1
35.0
26.9
39.4
22.4
43.3
17.2
----35.7
30.8
36.3
28.9
40.4
23.6
44.1
17.7
----37.5
32.4
37.6
30.7
41.2
24.8
44.7
18.0
----38.8
33.5
38.8
31.7
41.8
25.8
45.2
18.4
-----
85
EA (dB)
80
31.4
31.4
33.5
29.6
38.0
25.8
42.1
21.6
44.9
17.8
33.7
33.7
35.0
32.5
39.4
28
43.3
22.8
45.8
18.4
35.7
35.7
36.3
35.2
40.4
30.0
44.1
23.9
46.6
19.0
37.5
37.5
37.6
37.6
41.2
31.9
44.7
24.9
47.2
19.5
38.8
38.8
38.8
38.8
41.8
33.6
45.2
25.8
47.6
19.9
1-- STAGE COOLING
85
35.7
35.7
34.4
34.4
38.0
30.7
42.1
26.4
44.9
22.7
38.3
38.3
38.1
38.1
39.4
33.6
43.3
28.4
45.8
24.2
40.5
40.5
41.5
41.5
40.4
36.4
44.1
30.2
46.6
25.5
42.6
42.6
44.4
44.4
41.2
39
44.7
31.8
47.2
26.6
44.1
44.1
45.9
45.9
41.8
41.4
45.2
33.3
47.6
27.5
75
29.6
25.5
30.9
23.6
35.3
19.8
39.7
15.8
----31.7
27.3
32.3
25.6
36.7
21.2
41.0
16.4
----33.5
28.9
33.6
27.4
37.8
22.5
42.0
16.9
----35.1
30.3
35.2
28.8
38.6
23.7
42.7
17.3
----36.6
31.6
36.6
29.9
39.2
24.9
43.2
17.7
-----
AMBIENT TEMPERATURE
95
105
EA (dB)
EA (dB)
80
85
75
80
29.6
33.6
27.6
27.6
29.6
33.6
23.8
27.6
30.9
33.2
28.3
28.3
28.4
33.2
22.3
27.1
35.3
35.3
32.4
32.4
24.6
29.5
18.6
23.4
39.7
39.7
37.1
37.1
20.6
25.5
14.7
19.6
43.0
43.0
--40.5
17.1
22.0
--16.2
31.7
36.0
29.6
29.6
31.7
36.0
25.5
29.6
32.3
36.7
29.7
29.7
31.2
36.7
24.2
29.7
36.7
36.7
33.7
33.7
26.8
32.4
20.0
25.6
41.0
41.0
38.3
38.3
22.0
27.7
15.3
21.0
44.0
44.0
--41.6
17.8
23.5
--16.9
33.5
38.1
31.3
31.3
33.5
38.1
27.0
31.3
33.6
39.7
31.3
31.3
33.6
39.7
25.6
31.3
37.8
37.8
34.7
34.7
28.9
35.3
21.3
27.6
42.0
42.0
39.2
39.2
23.3
29.6
15.9
22.3
44.4
44.4
--42.3
18.3
24.7
--17.6
35.1
40.0
32.8
32.8
35.1
40.0
28.3
32.8
35.2
41.6
32.8
32.8
35.2
41.6
26.8
32.8
38.6
38.6
35.6
35.6
30.8
38.0
22.5
29.6
42.7
42.7
39.9
39.9
24.4
31.5
16.3
23.5
44.9
44.9
--42.9
18.7
25.7
--18.1
36.6
41.6
34.1
34.1
36.6
41.6
29.4
34.1
36.6
43.3
34.1
34.1
36.6
43.3
27.9
34.1
39.2
40.6
36.3
36.3
32.7
40.6
23.7
31.5
43.2
43.2
40.5
40.5
25.4
33.2
16.8
24.6
45.2
45.2
--43.2
19.1
26.7
--18.6
Do not operate
Cubic feet per minute (supply air)
Entering air temperature (dry bulb)
Entering air temperature (wet bulb)
Sensible heat capacity
Total capacity
26
3 TONS
85
31.5
31.5
31.9
31.9
32.4
28.2
37.1
24.4
40.5
21.1
33.6
33.6
35.1
35.1
33.7
31.2
38.3
26.6
41.6
22.7
35.6
35.6
37.1
37.1
34.7
34.0
39.2
28.6
42.3
24.0
37.3
37.3
38.8
38.8
36.7
36.7
39.9
30.6
42.9
25.2
38.8
38.8
40.4
40.4
39.3
39.3
40.5
32.5
43.2
26.3
75
25.6
22.0
25.7
20.9
29.4
17.3
34.0
13.6
----27.4
23.6
27.4
22.4
30.5
18.7
35.2
14.2
----28.9
24.9
29.0
23.6
31.4
19.9
36.0
14.7
----30.3
26.1
30.3
24.8
32.2
21.1
36.7
15.2
----31.5
27.2
31.6
25.8
32.8
22.3
37.2
15.6
-----
115
EA (dB)
80
25.6
25.6
25.7
25.7
29.4
22.2
34.0
18.4
37.5
15.2
27.4
27.4
27.4
27.4
30.5
24.3
35.2
19.8
38.6
15.9
28.9
28.9
29.0
29.0
31.4
26.3
36.0
21.1
39.4
16.6
30.3
30.3
30.3
30.3
32.2
28.2
36.7
22.3
39.9
17.2
31.5
31.5
31.6
31.6
32.8
30.1
37.2
23.5
40.3
17.7
85
29.1
29.1
30.4
30.4
29.4
27.0
34.0
23.2
37.5
20.1
31.2
31.2
32.5
32.5
30.5
29.9
35.2
25.4
38.6
21.6
32.9
32.9
34.3
34.3
32.6
32.6
36.0
27.5
39.4
23.1
34.5
34.5
35.9
35.9
35.3
35.3
36.7
29.5
39.9
24.4
35.8
35.8
37.3
37.3
37.9
37.9
37.2
31.4
40.3
25.6
548J*05
58
EAT (wb)
1200 Cfm
62
67
72
76
58
EAT (wb)
1400 Cfm
62
67
72
76
58
EAT (wb)
1600 Cfm
62
67
72
76
58
EAT (wb)
1800 Cfm
62
67
72
76
58
EAT (wb)
2000 Cfm
62
67
72
76
LEGEND
--Cfm
EAT(db)
EAT(wb)
SHC
TC
-------------
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
75
41.7
36.5
44.1
33.7
48.8
28.2
53.2
22.3
----44.1
38.1
45.8
36.2
50.2
29.7
54.4
22.9
----46.1
39.2
46.9
38.2
51.2
31.1
55.3
23.2
----47.7
39.9
47.9
40.1
52.0
32.3
55.9
23.4
----49.1
40.4
49.1
40.4
52.6
33.4
56.4
23.6
-----
85
EA (dB)
80
41.7
41.7
44.1
38.9
48.8
33.4
53.2
27.5
56.2
22.5
44.1
44.1
45.8
42.3
50.2
35.8
54.4
28.9
57.1
23.3
46.1
46.1
46.9
45.2
51.2
38.0
55.3
30.1
57.8
23.9
47.7
47.7
47.9
47.9
52.0
40.1
55.9
31.3
58.3
24.4
49.1
49.1
49.1
49.1
52.6
42.0
56.4
32.2
58.6
24.8
1-- STAGE COOLING
85
46.9
46.9
44.1
44.1
48.8
38.6
53.2
32.7
56.2
27.7
50.2
50.2
48.3
48.3
50.2
41.9
54.4
35.0
57.1
29.4
53.1
53.1
52.1
52.1
51.2
45.0
55.3
37.1
57.8
30.8
55.5
55.5
55.7
55.7
52.0
47.9
55.9
39.1
58.3
32.2
57.7
57.7
57.7
57.7
52.6
50.7
56.4
40.9
58.6
33.5
75
39.9
34.7
42.0
32.6
46.4
27.1
50.7
21.3
----42.2
36.1
43.3
34.9
47.7
28.7
52.0
21.9
----44.0
37.1
44.6
36.5
48.7
30.1
52.9
22.3
----45.6
37.8
45.7
37.8
49.4
31.3
53.5
22.6
----46.9
38.2
47.0
38.2
50.0
32.5
53.9
22.8
-----
AMBIENT TEMPERATURE
95
105
EA (dB)
EA (dB)
80
85
75
80
39.9
45.1
37.8
37.8
39.9
45.1
32.5
37.8
42.0
43.1
39.4
39.4
37.8
43.1
31.3
36.6
46.4
46.4
43.7
43.7
32.4
37.6
25.9
31.3
50.7
50.7
48.1
48.1
26.5
31.8
20.2
25.5
53.8
53.8
--51.1
21.7
27.0
--20.8
42.2
48.3
40.2
40.2
42.2
48.3
34.0
40.2
43.3
47.1
40.8
40.8
41.0
47.1
33.4
39.6
47.7
47.7
44.9
44.9
34.8
40.9
27.5
33.7
52.0
52.0
49.2
49.2
28.0
34.1
20.8
27.0
54.8
54.8
--52.0
22.5
28.6
--21.5
44.0
51.0
41.9
41.9
44.0
51.0
34.8
41.9
44.6
50.5
42.0
42.0
43.5
50.5
34.9
42.0
48.7
48.7
45.9
45.9
37.1
44.0
28.9
35.9
52.9
52.9
50.0
50.0
29.3
36.3
21.2
28.3
55.4
55.4
--52.6
23.1
30.1
--22.1
45.6
53.5
43.4
43.4
45.6
53.5
35.4
43.4
45.7
53.5
43.4
43.4
45.7
53.5
35.5
43.4
49.4
49.4
46.6
46.6
39.2
47.1
30.1
38.1
53.5
53.5
50.6
50.6
30.5
38.3
21.5
29.5
55.9
55.9
--53.1
23.6
31.5
--22.6
46.9
55.7
44.6
44.6
46.9
55.7
35.8
44.6
47.0
55.7
44.7
44.7
47.0
55.7
35.8
44.7
50.0
50.0
47.1
47.1
41.2
49.9
31.2
40.1
53.9
53.9
51.1
51.1
31.5
40.3
21.7
30.6
56.3
56.3
--53.4
24.0
32.8
--23.1
Do not operate
Cubic feet per minute (supply air)
Entering air temperature (dry bulb)
Entering air temperature (wet bulb)
Sensible heat capacity
Total capacity
27
4 TONS
85
43.1
43.1
41.9
41.9
43.7
36.6
48.1
30.8
51.1
26.1
46.4
46.4
45.8
45.8
44.9
39.9
49.2
33.2
52.0
27.7
48.9
48.9
49.0
49.0
45.9
43.0
50.0
35.4
52.6
29.2
51.3
51.3
51.4
51.4
46.6
46.0
50.6
37.4
53.1
30.6
53.5
53.5
53.5
53.5
49.0
49.0
51.1
39.4
53.4
32.0
75
35.6
30.3
36.7
29.8
40.9
24.6
45.2
18.9
----38.0
31.7
38.0
31.7
42.0
26.2
46.2
19.5
----39.6
32.4
39.6
32.4
42.8
27.5
46.9
19.9
----41.0
32.8
41.0
32.9
43.5
28.7
47.4
20.1
----42.1
33.1
42.2
33.1
44.0
29.8
47.8
20.3
-----
115
EA (dB)
80
35.6
35.6
36.7
35.2
40.9
30.0
45.2
24.4
48.0
19.7
38.0
38.0
38.0
38.0
42.0
32.5
46.2
25.8
48.7
20.3
39.6
39.6
39.6
39.6
42.8
34.7
46.9
27.1
49.3
20.9
41.0
41.0
41.0
41.0
43.5
36.9
47.4
28.3
49.6
21.4
42.1
42.1
42.2
42.2
44.0
38.8
47.8
29.3
49.9
21.8
85
41.0
41.0
40.6
40.6
40.9
35.4
45.2
29.8
48.0
25.1
44.3
44.3
44.3
44.3
42.0
38.8
46.2
32.2
48.7
26.7
46.8
46.8
46.8
46.8
42.8
42.0
46.9
34.4
49.3
28.2
49.1
49.1
49.1
49.1
45.0
45.0
47.4
36.4
49.6
29.6
51.1
51.1
51.2
51.2
47.9
47.9
47.8
38.4
49.9
30.9
548J
Table 9 – COOLING CAPACITIES
Table 10 – COOLING CAPACITIES
548J*06
58
EAT (wb)
1500 Cfm
62
67
72
76
EAT (wb)
1750 Cfm
62
67
72
76
58
EAT (wb)
2000 Cfm
62
67
72
76
58
EAT (wb)
2250 Cfm
62
67
72
76
58
EAT (wb)
62
2500 Cfm
548J
58
67
72
76
LEGEND
--Cfm
EAT(db)
EAT(wb)
SHC
TC
-------------
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
75
52.7
46.2
55.5
42.8
61.7
35.6
68.0
27.9
----56.0
48.4
57.6
46.4
63.6
38.0
69.9
29.0
----58.8
50.1
59.3
49.5
65.1
40.2
71.3
29.9
----61.0
51.3
61.1
51.3
66.2
42.3
72.3
30.6
----63.0
52.1
63.0
52.2
67.2
44.2
73.2
31.3
-----
85
EA (dB)
80
52.7
52.7
55.5
49.3
61.7
42.1
68.0
34.4
72.9
28.0
56.0
56.0
57.6
54.0
63.6
45.6
69.9
36.6
74.6
29.2
58.8
58.8
59.3
58.2
65.1
48.9
71.3
38.6
75.9
30.2
61.0
61.0
61.1
61.1
66.2
52.0
72.3
40.4
76.9
31.1
63.0
63.0
63.0
63.0
67.2
55.0
73.2
42.2
77.7
32.0
1-- STAGE COOLING
85
59.2
59.2
55.8
55.8
61.7
48.6
68.0
40.9
72.9
34.5
63.6
63.6
61.6
61.6
63.6
53.2
69.9
44.2
74.6
36.8
67.4
67.4
66.9
66.9
65.1
57.6
71.3
47.3
75.9
38.9
70.8
70.8
70.8
70.8
66.2
61.8
72.3
50.2
76.9
40.9
73.8
73.8
73.9
73.9
67.2
65.9
73.2
53.1
77.7
42.9
75
49.9
43.4
52.1
41.1
58.1
34.0
64.3
26.4
----53.0
45.4
54.1
44.6
59.9
36.4
66.0
27.5
----55.8
47.0
55.9
47.1
61.3
38.6
67.3
28.3
----57.9
48.1
58.0
48.1
62.3
40.6
68.3
29.1
----59.8
48.8
59.8
48.9
63.1
42.5
69.0
29.7
-----
AMBIENT TEMPERATURE
95
105
EA (dB)
EA (dB)
80
85
75
80
49.9
56.5
46.9
46.9
49.9
56.5
40.3
46.9
52.1
54.3
48.1
48.1
47.7
54.3
39.2
45.8
58.1
58.1
54.1
54.1
40.5
47.1
32.2
38.8
64.3
64.3
60.1
60.1
33.0
39.6
24.7
31.4
69.0
69.0
--64.5
26.6
33.2
--25.1
53.0
60.7
49.9
49.9
53.0
60.7
42.2
49.9
54.1
59.9
50.1
50.1
52.2
59.9
42.1
49.8
59.9
59.9
55.7
55.7
44.0
51.7
34.5
42.3
66.0
66.0
61.7
61.7
35.2
42.8
25.7
33.5
70.6
70.6
--65.8
27.8
35.5
--26.1
55.8
64.5
52.5
52.5
55.8
64.5
43.6
52.5
55.9
64.6
52.5
52.5
55.9
64.6
43.6
52.5
61.3
61.3
56.9
56.9
47.3
56.1
36.7
45.6
67.3
67.3
62.8
62.8
37.1
45.9
26.5
35.5
71.7
71.7
--66.6
28.7
37.6
--27.0
57.9
67.8
54.5
54.5
57.9
67.8
44.5
54.5
58.0
67.8
54.6
54.6
58.0
67.8
44.6
54.6
62.3
62.3
57.9
57.9
50.5
60.4
38.7
48.7
68.3
68.3
63.7
63.7
39.0
48.9
27.2
37.3
72.5
72.5
--67.4
29.6
39.5
--27.9
59.8
70.7
56.2
56.2
59.8
70.7
45.1
56.2
59.8
70.8
56.3
56.3
59.8
70.8
45.2
56.3
63.1
64.5
58.7
58.7
53.5
64.5
40.6
51.7
69.0
69.0
64.3
64.3
40.7
51.7
27.8
38.9
73.1
73.1
--67.9
30.5
41.5
--28.6
Do not operate
Cubic feet per minute (supply air)
Entering air temperature (dry bulb)
Entering air temperature (wet bulb)
Sensible heat capacity
Total capacity
28
5 TONS
85
53.6
53.6
52.4
52.4
54.1
45.5
60.1
38.1
64.5
31.8
57.7
57.7
57.6
57.6
55.7
50.1
61.7
41.3
65.8
34.0
61.4
61.4
61.4
61.4
56.9
54.5
62.8
44.4
66.6
36.0
64.5
64.5
64.6
64.6
58.8
58.8
63.7
47.3
67.4
37.9
67.3
67.3
67.4
67.4
62.8
62.8
64.3
50.1
67.9
39.8
75
43.6
36.8
43.7
36.7
49.6
30.2
55.5
22.8
----46.5
38.6
46.6
38.7
51.1
32.5
56.9
23.7
----48.8
39.7
48.8
39.8
52.2
34.6
57.8
24.5
----50.7
40.5
50.7
40.5
53.1
36.6
58.5
25.0
----52.3
41.0
52.4
41.0
53.8
38.3
59.0
25.5
-----
115
EA (dB)
80
43.6
43.6
43.7
43.5
49.6
37.0
55.5
29.7
59.5
23.4
46.5
46.5
46.6
46.6
51.1
40.5
56.9
31.7
60.5
24.3
48.8
48.8
48.8
48.8
52.2
43.7
57.8
33.6
61.2
25.1
50.7
50.7
50.7
50.7
53.1
46.8
58.5
35.3
61.8
25.9
52.3
52.3
52.4
52.4
53.8
49.6
59.0
36.9
62.2
26.6
85
50.4
50.4
50.3
50.3
49.6
43.8
55.5
36.5
59.5
30.2
54.5
54.5
54.5
54.5
51.1
48.4
56.9
39.7
60.5
32.3
57.9
57.9
57.9
57.9
52.8
52.8
57.8
42.7
61.2
34.3
60.9
60.9
61.0
61.0
57.0
57.0
58.5
45.5
61.8
36.2
63.7
63.7
63.7
63.7
61.0
61.0
59.0
48.3
62.2
38.0
548J*07
58
EAT (wb)
1800 Cfm
62
67
72
76
58
EAT (wb)
2100 Cfm
62
67
72
76
58
EAT (wb)
2400 Cfm
62
67
72
76
58
EAT (wb)
2700 Cfm
62
67
72
76
58
EAT (wb)
3000 Cfm
62
67
72
76
LEGEND
--Cfm
EAT(db)
EAT(wb)
SHC
TC
-------------
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
75
61.1
53.3
64.1
49.6
70.8
40.7
77.4
31.1
----64.6
55.5
66.1
53.4
72.8
43.1
79.2
31.9
----67.4
57.0
67.8
56.5
74.3
45.3
80.4
32.6
----69.7
58.0
69.8
58.0
75.4
47.2
81.3
33.0
----71.7
58.7
71.7
58.7
76.4
49.0
82.0
33.4
-----
85
EA (dB)
80
61.1
61.1
64.1
57.4
70.8
48.5
77.4
38.9
82.0
30.9
64.6
64.6
66.1
62.5
72.8
52.2
79.2
41.1
83.1
32.0
67.4
67.4
67.8
66.9
74.3
55.7
80.4
43.0
84.0
32.6
69.7
69.7
69.8
69.8
75.4
59.0
81.3
44.8
84.9
33.4
71.7
71.7
71.7
71.7
76.4
62.1
82.0
46.5
85.5
34.2
1-- STAGE COOLING
85
68.9
68.9
65.2
65.2
70.8
56.3
77.4
46.7
82.0
38.8
73.7
73.7
71.7
71.7
72.8
61.3
79.2
50.2
83.1
41.2
77.8
77.8
77.4
77.4
74.3
66.1
80.4
53.4
84.0
43.1
81.5
81.5
81.5
81.5
75.4
70.7
81.3
56.5
84.9
45.2
84.7
84.7
84.8
84.8
76.4
75.1
82.0
59.5
85.5
47.2
75
58.3
50.4
60.5
47.8
67.2
39.1
73.7
29.6
----61.6
52.5
62.5
51.5
69.0
41.5
75.4
30.5
----64.4
53.9
64.4
53.9
70.4
43.7
76.6
31.2
----66.6
54.8
66.6
54.8
71.4
45.7
77.5
31.7
----68.5
55.4
68.6
55.4
72.3
47.5
78.2
32.1
-----
AMBIENT TEMPERATURE
95
105
EA (dB)
EA (dB)
80
85
75
80
58.3
66.1
55.2
55.2
58.3
66.1
47.2
55.2
60.5
63.6
56.5
56.5
55.7
63.6
45.8
53.8
67.2
67.2
63.1
63.1
47.0
54.9
37.3
45.3
73.7
73.7
69.5
69.5
37.5
45.5
27.9
36.0
78.4
78.4
--73.9
29.7
37.6
--28.1
61.6
70.8
58.4
58.4
61.6
70.8
49.1
58.4
62.5
69.9
58.5
58.5
60.7
69.9
49.2
58.5
69.0
69.0
64.8
64.8
50.7
59.9
39.7
49.1
75.4
75.4
71.0
71.0
39.7
49.0
28.7
38.1
79.8
79.8
--75.1
30.7
39.9
--29.1
64.4
74.9
61.0
61.0
64.4
74.9
50.3
61.0
64.4
74.9
61.0
61.0
64.4
74.9
50.3
61.0
70.4
70.4
66.1
66.1
54.2
64.7
41.9
52.6
76.6
76.6
72.1
72.1
41.7
52.3
29.3
40.1
80.7
80.7
--76.0
31.6
42.2
--30.0
66.6
78.5
63.1
63.1
66.6
78.5
51.1
63.1
66.6
78.4
63.2
63.2
66.6
78.4
51.2
63.2
71.4
71.4
67.1
67.1
57.6
69.4
43.9
55.9
77.5
77.5
72.9
72.9
43.6
55.5
29.8
41.9
81.3
81.3
--76.6
33.0
44.9
--30.8
68.5
81.7
64.9
64.9
68.5
81.7
51.6
64.9
68.6
81.7
65.0
65.0
68.6
81.7
51.6
65.0
72.3
73.8
67.9
67.9
60.7
73.8
45.7
59
78.2
78.2
73.5
73.5
45.3
58.5
30.2
43.6
81.8
81.8
--77.1
33.0
46.3
--31.6
Do not operate in this region
Cubic feet per minute (supply air)
Entering air temperature (dry bulb)
Entering air temperature (wet bulb)
Sensible heat capacity
Total capacity
29
6 TONS
85
63.2
63.2
61.8
61.8
63.1
53.3
69.5
44.0
73.9
36.2
67.7
67.7
67.8
67.8
64.8
58.4
71.0
47.5
75.1
38.5
71.7
71.7
71.7
71.7
66.1
63.3
72.1
50.8
76.0
40.8
75.2
75.2
75.2
75.2
67.9
67.9
72.9
54.0
76.6
43.0
78.3
78.3
78.3
78.3
72.4
72.4
73.5
57.1
77.1
45.1
75
51.8
43.7
52.1
43.4
58.6
35.3
64.9
26.0
----54.8
45.3
54.9
45.3
60.2
37.7
66.2
26.7
----57.3
46.4
57.3
46.4
61.4
39.9
67.1
27.2
----59.3
47.0
59.4
47.1
62.3
41.8
67.8
27.7
----61.0
47.3
61.0
47.4
63.0
43.4
68.2
28.0
-----
115
EA (dB)
80
51.8
51.8
52.1
51.6
58.6
43.5
64.9
34.2
68.8
26.4
54.8
54.8
54.9
54.9
60.2
47.3
66.2
36.3
69.7
27.3
57.3
57.3
57.3
57.3
61.4
50.8
67.1
38.2
70.4
28.1
59.3
59.3
59.4
59.4
62.3
54.1
67.8
40.0
70.8
28.8
61.0
61.0
61.0
61.0
63.0
57.1
68.2
41.7
71.3
29.5
85
59.9
59.9
59.7
59.7
58.6
51.7
64.9
42.5
68.8
34.6
64.3
64.3
64.4
64.4
60.2
56.8
66.2
45.9
69.7
36.9
68.2
68.2
68.3
68.3
61.7
61.7
67.1
49.2
70.4
39.1
71.6
71.6
71.7
71.7
66.4
66.4
67.8
52.4
70.8
41.3
74.7
74.7
74.7
74.7
70.8
70.8
68.2
55.5
71.3
43.3
548J
Table 11 – COOLING CAPACITIES
Table 12 – COOLING CAPACITIES
548J*08
58
EAT (wb)
2250Cfm
62
67
72
76
EAT (wb)
2625 Cfm
62
67
72
76
58
EAT (wb)
3000 Cfm
62
67
72
76
58
EAT (wb)
3375 Cfm
62
67
72
76
58
EAT (wb)
62
3750 Cfm
548J
58
67
72
76
LEGEND
--Cfm
EAT(db)
EAT(wb)
SHC
TC
-------------
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
75
77.4
66.9
81.8
60.6
90.6
50.4
99.4
39.6
----81.8
70.7
84.7
65.2
93.4
53.4
101.9
40.8
----85.6
74.1
87.0
69.4
95.5
56.1
103.8
41.8
----88.9
76.9
89.6
72.4
97.1
58.7
105.2
42.6
----91.6
79.2
91.7
75.2
98.4
61.1
106.2
43.4
-----
85
EA (dB)
80
77.4
77.4
81.8
72.1
90.6
62.0
99.4
51.3
105.7
42.1
81.8
81.8
84.7
78.5
93.4
66.7
101.9
54.1
107.7
43.7
85.6
85.6
87.0
84.1
95.5
71.2
103.8
56.7
109.1
44.9
88.9
88.9
89.6
88.1
97.1
75.3
105.2
59.0
110.1
45.9
91.6
91.6
91.7
91.7
98.4
79.3
106.2
61.1
111.0
46.8
2-- STAGE COOLING
85
87.8
87.8
83.7
83.7
90.6
73.5
99.4
62.9
105.7
54.5
92.8
92.8
91.7
91.7
93.4
80.1
101.9
67.5
107.7
58.1
97.2
97.2
98.9
98.9
95.5
86.2
103.8
71.6
109.1
60.6
100.9
100.9
103.8
103.8
97.1
92.0
105.2
75.3
110.1
62.8
104.0
104.0
108.3
108.3
98.4
97.5
106.2
78.8
111.0
64.9
75
74.1
64.0
77.2
58.4
86.0
48.4
94.7
37.7
----78.0
67.5
79.9
62.9
88.6
51.4
97.1
38.9
----81.8
70.7
82.5
66.6
90.5
54.1
98.8
39.9
----84.9
73.4
85.1
69.7
92.1
56.7
100.0
40.7
----87.5
75.7
87.7
71.8
93.3
59.1
101.0
41.5
-----
AMBIENT TEMPERATURE
95
105
EA (dB)
EA (dB)
80
85
75
80
74.1
84.1
69.8
69.8
74.1
84.1
60.3
69.8
77.2
81.4
71.9
71.9
69.9
81.4
55.9
67.4
86.0
86.0
80.8
80.8
60.0
71.6
46.2
57.8
94.7
94.7
89.5
89.5
49.4
61.0
35.8
47.4
100.8
100.8
--95.5
40.4
52.8
--38.6
78.0
88.6
74.1
74.1
78.0
88.6
64.1
74.1
79.9
89.2
75.2
75.2
76.1
89.2
60.3
73.3
88.6
88.6
83.2
83.2
64.7
78.1
49.2
62.5
97.1
97.1
91.8
91.8
52.3
65.6
36.9
50.3
102.6
102.6
--97.2
41.9
56.0
--39.9
81.8
92.9
77.6
77.6
81.8
92.9
67.1
77.6
82.5
95.4
78.0
78.0
81.0
95.4
63.1
76.8
90.5
90.5
85.1
85.1
69.2
84.2
51.9
67.0
98.8
98.8
93.4
93.4
54.8
69.8
37.9
52.9
104.0
104.0
--98.3
43.1
58.6
--41.1
84.9
96.4
80.5
80.5
84.9
96.4
69.6
80.5
85.1
100.4
81.0
81.0
85.0
100.4
65.6
79.8
92.1
92.1
86.5
86.5
73.4
90.1
54.5
71.2
100.0
100.0
94.5
94.5
57.1
73.5
38.8
55.2
105.0
105.0
--99.2
44.1
60.9
--42.1
87.5
99.4
83.0
83.0
87.5
99.4
71.8
83.0
87.7
103.5
83.1
83.1
87.7
103.5
68.1
83.1
93.3
95.6
87.7
87.7
77.3
95.6
56.9
75.2
101.0
101.0
95.4
95.4
59.2
76.9
39.5
57.3
105.8
105.8
--99.8
45.1
63.1
--43.0
Do not operate in this region
Cubic feet per minute (supply air)
Entering air temperature (dry bulb)
Entering air temperature (wet bulb)
Sensible heat capacity
Total capacity
30
7.5 TONS
85
79.2
79.2
78.9
78.9
80.8
69.3
89.5
59.0
95.5
50.9
84.2
84.2
86.2
86.2
83.2
75.9
91.8
63.6
97.2
53.9
88.0
88.0
90.5
90.5
85.1
82.1
93.4
67.8
98.3
56.4
91.4
91.4
94.1
94.1
87.9
87.9
94.5
71.6
99.2
58.7
94.3
94.3
98.1
98.1
93.4
93.4
95.4
75.0
99.8
60.8
75
65.2
56.4
66.6
53.2
75.1
43.9
83.8
33.6
----69.5
60.1
69.8
56.8
77.4
46.8
86.0
34.8
----72.9
63.0
73.3
59.6
79.0
49.5
87.5
35.8
----75.7
65.5
75.8
62.1
80.3
52.0
88.5
36.6
----78.1
67.6
78.2
64.1
81.5
54.5
89.3
37.4
-----
115
EA (dB)
80
65.2
65.2
66.6
64.5
75.1
55.4
83.8
45.2
89.7
36.5
69.5
69.5
69.8
69.2
77.4
60.2
86.0
48.1
91.2
37.9
72.9
72.9
73.3
72.6
79.0
64.6
87.5
50.7
92.2
39.0
75.7
75.7
75.8
75.8
80.3
68.7
88.5
53.1
92.9
40.0
78.1
78.1
78.2
78.2
81.5
72.7
89.3
55.2
93.5
40.9
85
74.1
74.1
75.9
75.9
75.1
67.0
83.8
56.8
89.7
48.8
78.9
78.9
81.6
81.6
77.4
73.5
86.0
61.5
91.2
51.6
82.8
82.8
85.6
85.6
79.6
79.6
87.5
65.7
92.2
54.2
86.0
86.0
89.5
89.5
85.4
85.4
88.5
69.5
92.9
56.4
88.7
88.7
92.3
92.3
90.9
90.9
89.3
73.0
93.5
58.4
548J*09
58
EAT (wb)
2550 Cfm
62
67
72
76
58
EAT (wb)
2975 Cfm
62
67
72
76
58
EAT (wb)
3400 Cfm
62
67
72
76
58
EAT (wb)
3825 Cfm
62
67
72
76
58
EAT (wb)
4250 Cfm
62
67
72
76
LEGEND
--Cfm
EAT(db)
EAT(wb)
SHC
TC
-------------
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
TC
SHC
75
91.1
79.4
96.0
72.7
106.4
60.4
117.3
47.4
----96.5
84.1
98.2
78.1
109.5
64.1
120.6
49.1
----101.0
88.0
102.3
82.9
112.1
67.7
123.0
50.5
----104.5
91.1
105.0
86.9
114.1
71.2
124.9
51.9
----108.6
94.6
109.0
89.5
115.6
74.3
126.4
53.1
-----
85
EA (dB)
80
91.1
91.1
96.0
86.0
106.4
73.8
117.3
60.9
126.1
50.3
96.5
96.5
98.2
93.6
109.5
79.6
120.6
64.7
129.2
52.3
101.0
101.0
102.3
99.7
112.1
85.3
123.0
68.2
131.5
54.1
104.5
104.5
105.0
105.0
114.1
90.8
124.9
71.5
133.3
55.7
108.6
108.6
109.0
107.9
115.6
95.9
126.4
74.6
134.6
57.2
2-- STAGE COOLING
85
102.9
102.9
99.4
99.4
106.4
87.2
117.3
74.4
126.1
64.3
109.0
109.0
109.0
109.0
109.5
95.2
120.6
80.3
129.2
68.4
114.0
114.0
116.5
116.5
112.1
102.9
123.0
85.9
131.5
72.1
118.0
118.0
123.0
123.0
114.1
110.4
124.9
91.1
133.3
75.6
122.6
122.6
126.4
126.4
117.4
117.4
126.4
96.1
134.6
78.8
75
86.4
75.2
89.2
69.6
100.4
57.7
111.2
45.1
----91.7
79.9
92.9
75.1
103.0
61.4
114.2
46.7
----96.7
84.2
96.9
79.7
105.5
65.1
116.5
48.2
----99.8
86.9
100.3
83.0
107.4
68.5
118.2
49.5
----102.7
89.5
103.4
85.6
108.9
71.7
119.7
50.8
-----
AMBIENT TEMPERATURE
95
105
EA (dB)
EA (dB)
80
85
75
80
86.4
97.5
81.2
81.2
86.4
97.5
70.8
81.2
89.2
96.4
83.0
83.0
83.0
96.4
66.7
80.0
100.4
100.4
92.9
92.9
71.1
84.5
54.7
68.1
111.2
111.2
104.3
104.3
58.5
72.0
42.4
55.9
119.9
119.9
--113.0
48.0
61.8
--45.6
91.7
103.5
86.7
86.7
91.7
103.5
75.5
86.7
92.9
105.4
87.0
87.0
90.2
105.4
71.3
85.9
103.0
103.0
96.3
96.3
76.9
92.5
58.7
74.3
114.2
114.2
107.3
107.3
62.3
77.9
44.1
59.7
122.9
122.9
--115.7
50.0
65.8
--47.6
96.7
109.1
90.9
90.9
96.7
109.1
79.2
90.9
96.9
112.5
90.7
90.7
96.1
112.5
75.1
90.7
105.5
105.5
98.4
98.4
82.7
100.2
62.2
79.8
116.5
116.5
109.4
109.4
65.8
83.5
45.6
63.2
124.9
124.9
--117.7
51.8
69.7
--49.4
99.8
112.6
94.4
94.4
99.8
112.6
82.3
94.4
100.3
117.5
93.4
93.4
100.3
117.5
77.4
93.4
107.4
107.6
99.4
99.4
88.1
107.6
65.4
85.0
118.2
118.2
111.0
111.0
69.1
88.7
47.0
66.6
126.5
126.5
--119.2
53.5
73.3
--51.1
102.7
115.9
97.4
97.4
102.7
115.9
84.9
97.4
103.4
121.2
97.5
97.5
103.4
121.2
80.7
97.5
108.9
114.7
101.6
101.6
93.2
114.7
68.7
90.1
119.7
119.7
112.3
112.3
72.3
93.8
48.2
69.8
127.8
127.8
--120.3
55.0
76.6
--52.6
Do not operate in this region
Cubic feet per minute (supply air)
Entering air temperature (dry bulb)
Entering air temperature (wet bulb)
Sensible heat capacity
Total capacity
31
8.5 TONS
85
91.7
91.7
93.4
93.4
92.9
81.6
104.3
69.4
113.0
59.4
97.9
97.9
100.5
100.5
96.3
89.8
107.3
75.3
115.7
63.5
102.6
102.6
106.3
106.3
98.4
97.3
109.4
80.8
117.7
67.2
106.6
106.6
109.5
109.5
104.6
104.6
111.0
86.2
119.2
70.8
110.0
110.0
114.2
114.2
111.4
111.4
112.3
91.4
120.3
74.1
75
75.7
66.0
76.5
62.4
86.0
51.8
97.0
39.7
----80.5
70.1
80.6
66.7
87.6
55.3
99.5
41.3
----84.9
74.0
84.6
70.0
90.8
59.2
101.6
42.8
----87.9
76.6
87.3
72.3
92.0
62.4
103.1
44.2
----90.8
79.1
91.3
75.6
93.6
65.6
104.2
45.4
-----
115
EA (dB)
80
75.7
75.7
76.5
75.2
86.0
65.2
97.0
53.1
105.6
43.0
80.5
80.5
80.6
80.6
87.6
70.9
99.5
56.9
108.1
45.0
84.9
84.9
84.6
84.6
90.8
76.7
101.6
60.4
109.9
46.8
87.9
87.9
87.3
87.3
92.0
81.9
103.1
63.8
111.2
48.5
90.8
90.8
91.3
91.3
93.6
86.8
104.2
67.0
112.3
50.0
85
85.5
85.5
88.0
88.0
86.0
78.6
97.0
66.6
105.6
56.7
90.9
90.9
94.5
94.5
87.6
86.5
99.5
72.5
108.1
60.8
95.8
95.8
99.1
99.1
94.2
94.2
101.6
78.1
109.9
64.6
99.2
99.2
102.3
102.3
101.3
101.3
103.1
83.4
111.2
68.1
102.5
102.5
106.9
106.9
108.1
108.1
104.2
88.5
112.3
71.5
548J
Table 13 – COOLING CAPACITIES
Table 14 – HEATING CAPACITIES
3 TONS
548J*04
RETURN
AIR
(°F db)
CFM
(STANDARD AIR)
900
55
1200
1500
900
70
1200
548J
1500
900
80
1200
1500
Capacity
Int. Cap.
Capacity
Int. Cap.
Capacity
Int. Cap.
Capacity
Int. Cap.
Capacity
Int. Cap.
Capacity
Int. Cap.
Capacity
Int. Cap.
Capacity
Int. Cap.
Capacity
Int. Cap.
TEMPERATURE AIR ENTERING OUTDOOR COIL (°F db at 70% rh)
---10
0
10
17
30
40
47
50
60
11.6
10.7
12.0
11.1
12.6
11.6
9.8
9.0
10.1
9.3
10.8
10.0
8.3
7.7
8.6
8.0
9.3
8.6
15.1
13.9
15.5
14.3
16.3
15.0
13.3
12.3
13.8
12.7
14.6
13.4
11.9
10.9
12.4
11.4
13.2
12.1
18.9
17.4
19.4
17.8
20.2
18.5
17.2
15.7
17.7
16.3
18.6
17.1
15.7
14.4
16.3
15.0
17.2
15.8
21.7
19.8
22.3
20.3
23.1
21.1
20.0
18.2
20.7
18.8
21.5
19.6
18.6
16.9
19.3
17.6
20.2
18.4
27.6
24.2
28.4
24.9
29.5
25.8
25.6
22.5
26.6
23.3
27.7
24.3
24.1
21.2
25.1
22.0
26.2
23.0
32.7
32.7
33.5
33.5
34.2
34.2
30.4
30.4
31.7
31.7
33.0
33.0
29.0
29.0
30.2
30.2
31.4
31.4
36.0
36.0
36.7
36.7
37.5
37.5
34.5
34.5
35.4
35.4
36.4
36.4
32.7
32.7
34.3
34.3
35.5
35.5
37.1
37.1
37.8
37.8
38.6
38.6
35.5
35.5
36.5
36.5
37.4
37.4
34.1
34.1
35.4
35.4
36.5
36.5
41.8
41.8
42.7
42.7
43.5
43.5
40.2
40.2
41.2
41.2
42.0
42.0
39.0
39.0
40.1
40.1
41.1
41.1
Table 15 – HEATING CAPACITIES
4 TONS
548J*05
RETURN
AIR
(°F db)
CFM
(STANDARD AIR)
1200
55
1600
2000
1200
70
1600
2000
1200
80
1600
2000
LEGEND
Capacity
Int. Cap.
rh
db
---------
Capacity
Int. Cap.
Capacity
Int. Cap.
Capacity
Int. Cap.
Capacity
Int. Cap.
Capacity
Int. Cap.
Capacity
Int. Cap.
Capacity
Int. Cap.
Capacity
Int. Cap.
Capacity
Int. Cap.
TEMPERATURE AIR ENTERING OUTDOOR COIL (°F db at 70% rh)
---10
0
10
17
30
40
47
50
60
17.5
16.2
17.5
16.2
18.5
17.1
15.8
14.6
15.9
14.7
17.0
15.7
14.2
13.1
14.4
13.3
15.5
14.3
22.0
20.2
22.1
20.3
23.1
21.3
20.3
18.7
20.5
18.9
21.7
20.0
18.8
17.3
19.1
17.6
20.3
18.7
26.6
24.4
26.7
24.5
27.8
25.5
25.0
22.9
25.3
23.2
26.5
24.3
23.5
21.6
23.9
22.0
25.2
23.1
30.0
27.3
30.2
27.5
31.3
28.6
28.3
25.8
28.7
26.1
29.9
27.3
26.9
24.6
27.4
25.0
28.7
26.1
36.8
32.2
37.3
32.7
38.7
33.9
35.0
30.6
35.6
31.2
36.9
32.4
33.6
29.4
34.2
30.0
35.6
31.2
42.6
42.6
43.5
43.5
44.9
44.9
40.5
40.5
41.3
41.3
42.9
42.9
39.0
39.0
39.8
39.8
41.4
41.4
47.1
47.1
47.9
47.9
49.1
49.1
44.7
44.7
45.8
45.8
47.3
47.3
43.2
43.2
44.2
44.2
45.9
45.9
48.9
48.9
49.8
49.8
50.9
50.9
46.7
46.7
47.8
47.8
49.1
49.1
45.1
45.1
46.1
46.1
47.8
47.8
55.3
55.3
56.1
56.1
57.1
57.1
53.0
53.0
53.9
53.9
55.2
55.2
51.4
51.4
52.4
52.4
53.8
53.8
Instantaneous Capacity (1000 Btuh) includes indoor fan motor heat @ARI static conditions
Integrated Capacity is Instantaneous Capacity minus the effects of frost on the outdoor coil and the heat required to defrost
Relative Humidity
Dry Bulb
32
Table 16 – HEATING CAPACITY
5 TONS
548J*06
CFM
(STANDARD AIR)
1500
55
2000
2500
1500
70
2000
2500
1500
80
2000
2500
Capacity
Int. Cap.
Capacity
Int. Cap.
Capacity
Int. Cap.
Capacity
Int. Cap.
Capacity
Int. Cap.
Capacity
Int. Cap.
Capacity
Int. Cap.
Capacity
Int. Cap.
Capacity
Int. Cap.
TEMPERATURE AIR ENTERING OUTDOOR COIL (°F DB AT 70% RH)
---10
0
10
17
30
40
47
50
60
22.7
21.0
22.8
21.1
24.2
22.4
19.9
18.4
20.1
18.6
21.5
19.9
17.6
16.3
17.8
16.5
19.3
17.8
28.3
26.1
28.5
26.2
30.0
27.6
25.8
23.7
26.1
24.0
27.6
25.4
23.7
21.9
24.1
22.2
25.6
23.6
34.2
31.4
34.4
31.6
35.9
33.0
31.9
29.3
32.3
29.6
33.8
31.1
30.0
27.6
30.5
28.0
32.1
29.4
38.6
35.2
38.9
35.4
40.4
36.8
36.3
33.1
36.7
33.5
38.3
35.0
34.6
31.5
35.1
32.0
36.8
33.5
47.4
41.5
47.9
42.0
49.6
43.5
45.2
39.6
45.8
40.1
47.5
41.6
43.5
38.1
44.3
38.8
46.0
40.3
54.3
54.3
55.3
55.3
56.9
56.9
51.7
51.7
52.9
52.9
54.7
54.7
50.2
50.2
51.2
51.2
53.1
53.1
60.0
60.0
60.9
60.9
62.3
62.3
57.6
57.6
58.4
58.4
60.4
60.4
55.7
55.7
56.6
56.6
58.8
58.8
62.6
62.6
63.1
63.1
64.4
64.4
60.0
60.0
61.0
61.0
62.7
62.7
58.2
58.2
59.4
59.4
61.1
61.1
70.3
70.3
70.9
70.9
72.0
72.0
67.9
67.9
68.8
68.8
70.2
70.2
66.1
66.1
67.2
67.2
68.8
68.8
Table 17 – HEATING CAPACITY
6 TONS
548J*07
RETURN
AIR
(°F DB)
CFM
(STANDARD AIR)
1800
55
2400
3000
1800
70
2400
3000
1800
80
2400
3000
LEGEND
Capacity
Int. Cap.
rh
db
---------
Capacity
Int. Cap.
Capacity
Int. Cap.
Capacity
Int. Cap.
Capacity
Int. Cap.
Capacity
Int. Cap.
Capacity
Int. Cap.
Capacity
Int. Cap.
Capacity
Int. Cap.
Capacity
Int. Cap.
TEMPERATURE AIR ENTERING OUTDOOR COIL (°F DB AT 70% RH)
---10
0
10
17
30
40
47
50
60
22.4
20.7
24.6
22.7
27.4
25.3
17.7
16.4
19.9
18.4
22.8
21.1
13.9
12.8
16.0
14.8
18.8
17.4
29.8
27.4
32.1
29.5
35.0
32.2
25.5
23.5
27.9
25.7
30.9
28.4
21.9
20.2
24.4
22.5
27.4
25.2
37.1
34.1
39.6
36.3
42.5
39.0
33.2
30.5
35.8
32.9
38.9
35.7
29.9
27.4
32.6
29.9
35.8
32.8
42.5
38.8
45.1
41.1
48.2
43.9
38.6
35.2
41.4
37.7
44.5
40.6
35.5
32.3
38.4
35.0
41.6
37.9
53.5
46.9
56.4
49.4
59.5
52.1
49.5
43.4
52.7
46.2
56.1
49.2
46.2
40.5
49.6
43.5
53.1
46.6
62.4
62.4
65.6
65.6
68.6
68.6
58.5
58.5
62.0
62.0
65.5
65.5
55.3
55.3
59.0
59.0
62.7
62.7
68.6
68.6
71.5
71.5
74.5
74.5
65.0
65.0
68.4
68.4
71.7
71.7
62.0
62.0
65.8
65.8
69.4
69.4
71.2
71.2
74.2
74.2
77.2
77.2
67.7
67.7
71.0
71.0
74.4
74.4
64.9
64.9
68.6
68.6
72.1
72.1
80.3
80.3
83.8
83.8
86.8
86.8
76.5
76.5
80.3
80.3
83.9
83.9
73.7
73.7
77.5
77.5
81.4
81.4
Instantaneous Capacity (1000 Btuh) includes indoor fan motor heat @ARI static conditions
Integrated Capacity is Instantaneous Capacity minus the effects of frost on the outdoor coil and the heat required to defrost
Relative Humidity
Dry Bulb
33
548J
RETURN
AIR
(°F DB)
Table 18 – HEATING CAPACITY
7.5 TONS
548J*08
RETURN
AIR
(°F db)
CFM
(STANDARD AIR)
2250
55
3000
3750
2250
70
3000
548J
3750
2250
80
3000
3750
Capacity
Int. Cap.
Capacity
Int. Cap.
Capacity
Int. Cap.
Capacity
Int. Cap.
Capacity
Int. Cap.
Capacity
Int. Cap.
Capacity
Int. Cap.
Capacity
Int. Cap.
Capacity
Int. Cap.
TEMPERATURE AIR ENTERING OUTDOOR COIL (°F db at 70% rh)
---10
25.9
23.9
27.4
25.3
31.0
28.6
22.5
20.8
24.1
22.3
27.8
25.7
0
34.6
31.8
36.2
33.4
40.0
36.8
31.5
29.0
33.3
30.6
37.1
34.1
10
17
30
40
47
50
60
46.9
43.1
53.5
48.7
43.6
40.0
45.5
41.8
49.3
45.3
40.7
37.3
42.7
39.2
46.6
42.8
58.9
53.7
50.2
45.7
52.2
47.6
56.1
51.1
47.3
43.1
49.5
45.2
53.5
48.8
66.3
58.1
68.5
60.0
72.5
63.5
62.7
55.0
65.1
57.0
69.1
60.6
60.1
52.6
62.5
54.8
66.7
58.4
77.2
77.2
80.2
80.2
84.6
84.6
73.0
73.0
75.9
75.9
80.4
80.4
70.3
70.3
73.1
73.1
77.5
77.5
86.2
86.2
89.8
89.8
94.5
94.5
81.4
81.4
85.0
85.0
89.8
89.8
78.2
78.2
81.6
81.6
86.4
86.4
89.4
89.4
93.1
93.1
97.6
97.6
84.5
84.5
88.2
88.2
93.2
93.2
81.2
81.2
84.7
84.7
89.7
89.7
103.3
103.3
106.7
106.7
110.6
110.6
98.0
98.0
102.1
102.1
106.5
106.5
94.3
94.3
98.6
98.6
103.4
103.4
Table 19 – HEATING CAPACITY
8.5 TONS
548J*09
RETURN
AIR
(°F db)
CFM
(STANDARD AIR)
2550
55
3400
4250
2550
70
3400
4250
2550
80
3400
4250
Capacity
Int. Cap.
Capacity
Int. Cap.
Capacity
Int. Cap.
Capacity
Int. Cap.
Capacity
Int. Cap.
Capacity
Int. Cap.
Capacity
Int. Cap.
Capacity
Int. Cap.
Capacity
Int. Cap.
TEMPERATURE AIR ENTERING OUTDOOR COIL (°F db at 70% rh)
---10
0
10
17
30
40
47
50
60
33.1
30.7
34.4
31.8
38.0
35.2
29.0
26.8
30.3
28.0
34.0
31.5
25.3
23.4
26.6
24.6
30.4
28.1
42.7
39.3
44.0
40.5
47.7
43.9
38.6
35.5
40.2
37.0
44.0
40.5
35.0
32.2
36.7
33.8
40.6
37.4
52.7
48.3
54.2
49.8
58.0
53.2
48.6
44.6
50.4
46.3
54.4
50.0
45.2
41.5
47.2
43.3
51.2
47.0
60.0
54.7
61.8
56.4
65.8
60.0
55.9
51.0
58.0
52.9
62.1
56.6
52.6
48.0
54.8
50.0
59.0
53.8
75.6
66.2
77.5
67.9
81.5
71.4
70.7
61.9
73.5
64.4
77.8
68.2
67.1
58.8
69.8
61.2
74.4
65.1
87.4
87.4
89.9
89.9
94.2
94.2
83.5
83.5
86.1
86.1
90.5
90.5
80.0
80.0
83.0
83.0
87.7
87.7
97.5
97.5
100.2
100.2
103.9
103.9
93.1
93.1
96.5
96.5
100.5
100.5
90.0
90.0
93.1
93.1
97.7
97.7
100.6
100.6
103.1
103.1
106.6
106.6
96.2
96.2
99.2
99.2
103.3
103.3
93.2
93.2
96.2
96.2
100.7
100.7
113.8
113.8
115.7
115.7
118.2
118.2
109.5
109.5
111.9
111.9
115.2
115.2
106.5
106.5
109.2
109.2
112.8
112.8
--- Indicates operation not permissible
LEGEND
Capacity --- Instantaneous Capacity (1000 Btuh) includes indoor fan motor heat @ARI static conditions
Int. Cap. --- Integrated Capacity is Instantaneous Capacity minus the effects of frost on the outdoor coil and the heat required to defrost
rh
--- Relative Humidity
db
--- Dry Bulb
34
Table 20 – STATIC PRESSURE ADDERS (Factory Options and/or Accessories)
Economizer
CFM (in. wg)
Vertical
Economizer
Horizontal
Economizer
600
800
1000
3 --- 6 TONS
1250 1500 1750
2000
2250
2500
2750
3000
0.01
0.02
0.04
0.05
0.07
0.09
0.12
0.15
0.18
0.22
0.26
0.02
0.03
0.04
0.06
0.08
0.10
0.13
0.15
0.18
0.23
0.28
2250
2500
2750
3000
3250
7.5 --- 8.5 TONS
3500 3750 4000
4250
4500
4750
5000
5250
5500
5750
6000
0.06
0.08
0.09
0.12
0.13
0.15
0.17
0.20
0.22
0.25
0.29
0.33
0.36
0.40
0.44
0.48
0.08
0.10
0.13
0.15
0.18
0.21
0.25
0.28
0.30
0.34
0.39
0.43
0.47
0.51
0.56
0.60
1800
2000
2200
2400
2600
548J
CFM (in. wg)
Vertical
Economizer
Horizontal
Economizer
Electric Heaters
CFM (in. wg)
1 Electric
Heater Module
2 Electric
Heater Modules
CFM (in. wg)
1 Electric
Heater Module
2 Electric
Heater Modules
3 --- 6 TONS
1400 1600
600
900
1200
0.03
0.05
0.07
0.09
0.09
0.10
0.11
0.11
0.12
0.13
0.13
0.15
0.16
0.16
0.16
0.17
0.17
0.17
0.18
0.18
2250
2500
2750
3000
3250
7.5 --- 8.5 TONS
3500 3750 4000
4250
4500
4750
5000
5250
5500
5750
6000
0.03
0.04
0.04
0.05
0.06
0.07
0.08
0.09
0.10
0.11
0.12
0.13
0.14
0.15
0.16
0.18
0.04
0.05
0.05
0.06
0.07
0.08
0.09
0.10
0.11
0.12
0.13
0.15
0.16
0.17
0.19
0.20
General fan performance notes:
1. Interpolation is permissible. Do not extrapolate.
2. External static pressure is the static pressure difference between the return duct and the supply duct plus the static
pressure caused by any FIOPs or accessories.
3. Tabular data accounts for pressure loss due to clean filters, unit casing, and wet coils. Factory options and accessories
may add static pressure losses, as shown in Table 20. Selection software is available, through your salesperson, to help
you select the best motor/drive combination for your application.
4. The Fan Performance tables offer motor/drive recommendations. In cases when two motor/drive combinations would
work, Bryant recommended the lower horsepower option.
5. For information on the electrical properties of Bryant motors, please see the Electrical information section of this
book.
6. For more information on the performance limits of Bryant motors, see the application data section of this book.
35
FAN PERFORMANCE
Table 21 – 548J*04 ELECTRIC DRIVE, X13 MOTOR,
3 TON HORIZONTAL SUPPLY
SPEED
(TORQUE)
TAP
548J
1
2
3
4
5
CFM
ESP
BHP
900
975
1050
1125
1200
1275
1350
1425
1500
900
975
1050
1125
1200
1275
1350
1425
1500
900
975
1050
1125
1200
1275
1350
1425
1500
900
975
1050
1125
1200
1275
1350
1425
1500
900
975
1050
1125
1200
1275
1350
1425
1500
0.70
0.60
0.50
0.39
0.29
0.21
0.12
0.03
--0.85
0.76
0.66
0.55
0.46
0.36
0.27
0.17
0.07
1.02
0.94
0.86
0.79
0.71
0.61
0.51
0.40
0.29
1.12
1.06
1.00
0.95
0.89
0.80
0.70
0.57
0.46
1.18
1.14
1.10
1.06
1.02
0.98
0.94
0.90
0.87
0.31
0.30
0.29
0.27
0.26
0.24
0.23
0.21
--0.37
0.36
0.36
0.34
0.34
0.32
0.31
0.29
0.27
0.44
0.45
0.45
0.45
0.45
0.44
0.43
0.41
0.39
0.49
0.50
0.52
0.53
0.54
0.53
0.52
0.50
0.49
0.52
0.54
0.56
0.58
0.60
0.63
0.65
0.68
0.71
Table 22 – 548J*04 ELECTRIC DRIVE, X13 MOTOR,
3 TON VERTICAL SUPPLY
SPEED
(TORQUE)
TAP
1
2
3
4
5
36
CFM
ESP
BHP
900
975
1050
1125
1200
1275
1350
1425
1500
900
975
1050
1125
1200
1275
1350
1425
1500
900
975
1050
1125
1200
1275
1350
1425
1500
900
975
1050
1125
1200
1275
1350
1425
1500
900
975
1050
1125
1200
1275
1350
1425
1500
0.44
0.35
0.24
0.15
0.08
0.02
------0.64
0.53
0.42
0.32
0.24
0.15
0.07
----0.93
0.80
0.68
0.57
0.47
0.35
0.26
0.13
0.08
1.04
0.92
0.80
0.71
0.62
0.52
0.43
0.27
0.22
1.10
1.00
0.90
0.82
0.75
0.70
0.67
0.60
0.62
0.22
0.21
0.20
0.19
0.19
0.18
------0.30
0.29
0.28
0.27
0.26
0.25
0.24
----0.42
0.41
0.39
0.38
0.37
0.36
0.34
0.33
0.32
0.47
0.46
0.45
0.45
0.45
0.44
0.44
0.42
0.41
0.50
0.49
0.49
0.50
0.51
0.54
0.57
0.60
0.64
FAN PERFORMANCE (cont.)
SPEED
(TORQUE)
TAP
1
2
3
4
5
CFM
ESP
BHP
1200
1300
1400
1500
1600
1700
1800
1900
2000
1200
1300
1400
1500
1600
1700
1800
1900
2000
1200
1300
1400
1500
1600
1700
1800
1900
2000
1200
1300
1400
1500
1600
1700
1800
1900
2000
1200
1300
1400
1500
1600
1700
1800
1900
2000
0.75
0.63
0.48
0.33
0.19
0.05
------0.97
0.88
0.77
0.64
0.50
0.36
0.21
0.06
--0.98
0.91
0.82
0.71
0.58
0.45
0.31
0.16
0.03
0.98
0.92
0.86
0.79
0.70
0.62
0.52
0.37
0.21
1.02
0.97
0.92
0.87
0.82
0.77
0.71
0.65
0.58
0.48
0.46
0.44
0.41
0.39
0.36
------0.58
0.59
0.59
0.59
0.57
0.54
0.52
0.49
--0.59
0.60
0.62
0.62
0.61
0.60
0.58
0.56
0.52
0.59
0.62
0.64
0.66
0.68
0.70
0.71
0.69
0.67
0.60
0.64
0.67
0.71
0.75
0.79
0.84
0.88
0.92
Table 24 – 548J*05 ELECTRIC DRIVE, X13 MOTOR,
4 TON VERTICAL SUPPLY
SPEED
(TORQUE)
TAP
1
2
3
4
5
37
CFM
ESP
BHP
1200
1300
1400
1500
1600
1700
1800
1900
2000
1200
1300
1400
1500
1600
1700
1800
1900
2000
1200
1300
1400
1500
1600
1700
1800
1900
2000
1200
1300
1400
1500
1600
1700
1800
1900
2000
1200
1300
1400
1500
1600
1700
1800
1900
2000
0.50
0.36
0.19
0.10
0.02
--------0.80
0.69
0.50
0.38
0.24
0.13
0.01
----0.89
0.78
0.59
0.46
0.31
0.20
0.07
----0.89
0.80
0.67
0.57
0.43
0.31
0.23
0.12
0.01
0.94
0.85
0.73
0.65
0.55
0.47
0.42
0.39
0.38
0.39
0.37
0.35
0.33
0.32
--------0.55
0.55
0.54
0.52
0.50
0.48
0.46
----0.59
0.61
0.60
0.58
0.56
0.54
0.52
----0.60
0.63
0.64
0.65
0.65
0.66
0.65
0.63
0.62
0.62
0.65
0.68
0.70
0.72
0.75
0.78
0.82
0.88
548J
Table 23 – 548J*05 ELECTRIC DRIVE, X13 MOTOR,
4 TON HORIZONTAL SUPPLY
FAN PERFORMANCE (cont.)
Table 25 – 548J*06 ELECTRIC DRIVE, X13 MOTOR,
5 TON HORIZONTAL SUPPLY
SPEED
(TORQUE)
TAP
548J
1
2
3
4
5
CFM
ESP
BHP
1500
1625
1750
1875
2000
2125
2250
2375
2500
1500
1625
1750
1875
2000
2125
2250
2375
2500
1500
1625
1750
1875
2000
2125
2250
2375
2500
1500
1625
1750
1875
2000
2125
2250
2375
2500
1500
1625
1750
1875
2000
2125
2250
2375
2500
1.19
1.01
0.82
0.60
0.38
0.16
------1.40
1.25
1.08
0.90
0.67
0.44
0.20
----1.41
1.28
1.13
0.96
0.74
0.51
0.27
0.02
--1.44
1.35
1.24
1.11
0.90
0.69
0.43
0.17
--1.49
1.38
1.28
1.18
1.11
0.97
0.72
0.47
0.20
0.74
0.73
0.70
0.66
0.62
0.57
------0.86
0.88
0.86
0.84
0.80
0.75
0.71
----0.87
0.89
0.89
0.88
0.85
0.80
0.75
0.70
--0.89
0.93
0.96
0.98
0.96
0.92
0.86
0.81
--0.90
0.95
1.00
1.05
1.09
1.11
1.07
1.02
0.96
Table 26 – 548J*06 ELECTRIC DRIVE, X13 MOTOR,
5 TON VERTICAL SUPPLY
SPEED
(TORQUE)
TAP
1
2
3
4
5
38
CFM
ESP
BHP
1500
1625
1750
1875
2000
2125
2250
2375
2500
1500
1625
1750
1875
2000
2125
2250
2375
2500
1500
1625
1750
1875
2000
2125
2250
2375
2500
1500
1625
1750
1875
2000
2125
2250
2375
2500
1500
1625
1750
1875
2000
2125
2250
2375
2500
1.00
0.72
0.46
0.28
0.14
0.00
------1.18
1.00
0.75
0.51
0.30
0.13
------1.19
1.03
0.80
0.56
0.35
0.19
0.01
----1.25
1.09
0.89
0.65
0.45
0.26
0.12
----1.26
1.16
0.99
0.80
0.67
0.48
0.26
0.11
---
0.70
0.65
0.60
0.55
0.51
0.52
------0.88
0.90
0.87
0.83
0.79
0.75
------0.88
0.91
0.90
0.87
0.83
0.80
0.77
----0.89
0.93
0.96
0.94
0.93
0.89
0.86
----0.90
0.96
1.01
1.05
1.07
1.07
1.03
1.00
---
FAN PERFORMANCE (cont.)
CFM
900
975
1050
1125
1200
1275
1350
1425
1500
BHP
0.13
0.15
0.18
0.20
0.23
0.26
0.30
0.34
0.38
BHP
0.47
0.50
0.53
0.57
0.61
0.65
0.70
0.75
0.80
RPM
999
1015
1030
1047
1064
1082
1100
1119
1138
BHP
0.77
0.80
0.84
0.88
0.92
0.97
1.02
1.08
1.14
AVAILABLE EXTERNAL STATIC PRESSURE (IN. WG)
1.4
1.6
1.8
BHP
RPM
BHP
RPM
0.93
1220
1.11
1284
0.97
1233
1.15
1297
1.01
1247
1.19
1311
1.05
1261
1.23
1325
1.10
1276
1.28
1339
1.15
1292
1.33
1354
1.20
1308
1.39
1370
1.26
1325
1.45
1386
1.33
1342
1.52
1403
BHP
1.30
1.33
1.38
1.42
1.47
1.53
1.59
1.65
1.72
RPM
1346
1358
1371
1385
1399
1414
1429
1444
1461
0.2
RPM
574
597
621
646
671
696
723
749
776
CFM
900
975
1050
1125
1200
1275
1350
1425
1500
3 TON HORIZONTAL SUPPLY
AVAILABLE EXTERNAL STATIC PRESSURE (IN. WG)
0.4
0.6
0.8
RPM
BHP
RPM
BHP
RPM
707
0.23
817
0.34
913
727
0.25
835
0.37
929
747
0.28
853
0.40
946
768
0.31
872
0.43
964
790
0.34
892
0.47
982
812
0.38
912
0.51
1001
835
0.42
933
0.55
1020
859
0.46
955
0.60
1040
883
0.51
977
0.65
1061
1.2
RPM
1078
1093
1108
1123
1140
1157
1174
1192
1210
RPM
1151
1165
1180
1195
1210
1226
1243
1260
1278
1.0
BHP
0.61
0.64
0.68
0.72
0.76
0.81
0.86
0.91
0.97
2.0
BHP
1.49
1.53
1.58
1.62
1.68
1.73
1.80
1.86
1.93
Italicized area --- X13 electric (direct drive motor, see page 36 for speed/torque setting).
Med static motor and drive (belt drive)
High static motor and drive (belt drive)
Table 28 – 548J*04
CFM
900
975
1050
1125
1200
1275
1350
1425
1500
BHP
0.15
0.17
0.19
0.22
0.25
0.29
0.33
0.37
0.42
BHP
0.52
0.55
0.58
0.62
0.66
0.71
0.76
0.81
0.87
RPM
1084
1092
1102
1113
1126
1140
1155
1171
1188
BHP
0.86
0.89
0.92
0.97
1.01
1.06
1.12
1.18
1.24
AVAILABLE EXTERNAL STATIC PRESSURE (IN. WG)
1.4
1.6
1.8
BHP
RPM
BHP
RPM
1.05
1354
1.25
1434
1.08
1358
1.29
1437
1.12
1363
1.32
1441
1.16
1370
1.37
1447
1.21
1378
1.42
1454
1.26
1387
1.47
1462
1.32
1397
1.53
1471
1.38
1409
1.59
1481
1.45
1421
1.66
1492
BHP
1.47
1.51
1.54
1.59
1.64
1.69
1.75
1.82
1.89
RPM
1511
1513
1516
1520
1526
1533
1541
-----
0.2
RPM
594
618
642
668
695
722
750
778
807
CFM
900
975
1050
1125
1200
1275
1350
1425
1500
3 TON VERTICAL SUPPLY
AVAILABLE EXTERNAL STATIC PRESSURE (IN. WG)
0.4
0.6
0.8
RPM
BHP
RPM
BHP
RPM
740
0.25
867
0.37
981
758
0.28
881
0.40
991
777
0.30
896
0.43
1003
797
0.34
912
0.47
1017
818
0.37
930
0.51
1032
841
0.41
949
0.55
1048
864
0.46
968
0.60
1065
888
0.50
989
0.65
1083
913
0.56
1011
0.71
1103
1.2
RPM
1180
1186
1194
1204
1215
1227
1240
1254
1270
RPM
1269
1275
1281
1289
1298
1309
1321
1333
1347
1.0
BHP
0.68
0.71
0.75
0.79
0.83
0.88
0.93
0.99
1.05
2.0
BHP
1.70
1.74
1.78
1.82
1.87
1.92
1.99
-----
Italicized area --- X13 electric (direct drive motor, see page 36 for speed/torque setting).
Med static motor and drive (belt drive)
High static motor and drive (belt drive)
Bold Face indicates field --- supplied drive
1. Recommend using field --- supplied fan pulley (part no. KR11AD561), motor pulley (part no. KR11HY181) and belt (part no.KR29AF041).
39
548J
Table 27 – 548J*04
FAN PERFORMANCE (cont.)
Table 29 – 548J*05
CFM
548J
1200
1300
1400
1500
1600
1700
1800
1900
2000
BHP
0.23
0.28
0.33
0.38
0.45
0.52
0.60
0.69
0.78
BHP
0.61
0.67
0.73
0.80
0.89
0.97
1.07
1.18
1.29
RPM
1064
1088
1113
1138
1165
1192
1221
1250
1280
BHP
0.92
0.99
1.06
1.14
1.23
1.33
1.44
1.55
1.68
AVAILABLE EXTERNAL STATIC PRESSURE (IN. WG)
1.4
1.6
1.8
BHP
RPM
BHP
RPM
1.10
1276
1.28
1339
1.16
1297
1.35
1360
1.24
1319
1.43
1381
1.33
1342
1.52
1403
1.42
1365
1.62
1425
1.52
1390
1.72
1449
1.63
1415
1.84
1473
1.75
1441
1.96
1498
1.88
1467
2.10
1524
BHP
1.47
1.55
1.63
1.72
1.82
1.93
2.05
2.18
2.32
RPM
1399
1419
1439
1461
1483
1505
1529
-----
0.2
RPM
671
705
740
776
813
851
888
927
965
CFM
1200
1300
1400
1500
1600
1700
1800
1900
2000
4 TON HORIZONTAL SUPPLY
AVAILABLE EXTERNAL STATIC PRESSURE (IN. WG)
0.4
0.6
0.8
RPM
BHP
RPM
BHP
RPM
790
0.34
892
0.47
982
820
0.39
919
0.52
1007
851
0.45
947
0.58
1034
883
0.51
977
0.65
1061
916
0.58
1007
0.73
1089
949
0.66
1038
0.81
1118
984
0.75
1069
0.90
1148
1019
0.84
1102
1.00
1179
1054
0.94
1135
1.11
1210
1.2
RPM
1140
1162
1186
1210
1236
1262
1289
1317
1345
RPM
1210
1232
1254
1278
1302
1328
1354
1380
1408
1.0
BHP
0.76
0.82
0.89
0.97
1.05
1.15
1.25
1.36
1.48
2.0
BHP
1.68
1.75
1.84
1.93
2.04
2.15
2.27
-----
Italicized area --- X13 electric (direct drive motor, see page 37 for speed/torque setting).
Med static motor and drive (belt drive)
High static motor and drive (belt drive)
Bold Face indicates field --- supplied drive
1. Recommend using field --- supplied fan pulley (part no. KR11AD561), motor pulley (part no. KR11HY181) and belt (part no.KR29AF041).
Table 30 – 548J*05
CFM
1200
1300
1400
1500
1600
1700
1800
1900
2000
RPM
818
849
880
913
948
983
1020
1057
1095
BHP
0.66
0.72
0.79
0.87
0.96
1.06
1.16
1.28
1.41
RPM
1126
1145
1166
1188
1213
1239
1266
1295
1325
RPM
1298
1313
1329
1347
1367
1389
1412
1437
1463
AVAILABLE EXTERNAL STATIC PRESSURE (IN. WG)
1.4
1.6
1.8
BHP
RPM
BHP
RPM
1.21
1378
1.42
1454
1.28
1390
1.49
1465
1.36
1405
1.57
1478
1.45
1421
1.66
1492
1.54
1440
1.76
1509
1.65
1459
1.88
1527
1.77
1481
2.00
--1.90
1504
2.13
--2.04
1528
2.28
---
BHP
1.64
1.71
1.79
1.89
1.99
2.11
-------
RPM
1526
1536
---------------
0.2
RPM
695
731
769
807
847
887
928
969
1010
CFM
1200
1300
1400
1500
1600
1700
1800
1900
2000
4 TON VERTICAL SUPPLY
AVAILABLE EXTERNAL STATIC PRESSURE (IN. WG)
0.4
0.6
0.8
BHP
RPM
BHP
RPM
0.37
930
0.51
1032
0.43
955
0.57
1053
0.49
982
0.63
1077
0.56
1011
0.71
1103
0.63
1042
0.79
1130
0.72
1073
0.88
1158
0.82
1106
0.98
1188
0.92
1140
1.09
1219
1.04
1175
1.21
1251
BHP
0.25
0.30
0.36
0.42
0.49
0.57
0.66
0.76
0.87
1.2
RPM
1215
1231
1249
1270
1292
1315
1341
1367
1395
BHP
1.01
1.08
1.16
1.24
1.34
1.44
1.56
1.68
1.82
1.0
BHP
0.83
0.89
0.97
1.05
1.14
1.24
1.35
1.48
1.61
2.0
BHP
1.87
1.94
---------------
Italicized area --- X13 electric (direct drive motor, see page 37 for speed/torque setting).
Med static motor and drive (belt drive)
High static motor and drive (belt drive)
Bold Face indicates field --- supplied drive
1. Recommend using field --- supplied fan pulley (part no. KR11AD561), motor pulley (part no. KR11HY181) and belt (part no.KR29AF041).
40
FAN PERFORMANCE (cont.)
CFM
1500
1625
1750
1875
2000
2125
2250
2375
2500
RPM
840
876
912
950
988
1027
1067
1107
1148
BHP
0.75
0.84
0.94
1.05
1.18
1.31
1.46
1.63
1.81
RPM
1101
1131
1162
1194
1226
1260
1294
1329
1364
RPM
1239
1267
1296
1326
1357
1388
1420
1453
1487
AVAILABLE EXTERNAL STATIC PRESSURE (IN. WG)
1.4
1.6
1.8
BHP
RPM
BHP
RPM
1.23
1302
1.40
1361
1.34
1329
1.52
1388
1.46
1358
1.65
1416
1.60
1387
1.79
1445
1.74
1417
1.95
1474
1.90
1447
2.11
1504
2.08
1479
2.29
1534
2.27
1511
2.49
1566
2.47
1543
2.70
1597
BHP
1.58
1.71
1.84
1.99
2.15
2.33
2.51
2.72
2.94
RPM
1418
1444
1472
1499
1528
1557
1587
-----
0.2
RPM
725
765
806
847
889
931
974
1018
1061
CFM
1500
1625
1750
1875
2000
2125
2250
2375
2500
5 TON HORIZONTAL SUPPLY
AVAILABLE EXTERNAL STATIC PRESSURE (IN. WG)
0.4
0.6
0.8
BHP
RPM
BHP
RPM
0.46
937
0.60
1023
0.54
970
0.68
1054
0.63
1004
0.78
1087
0.72
1039
0.88
1120
0.83
1075
1.00
1154
0.95
1112
1.13
1189
1.08
1149
1.27
1224
1.23
1187
1.43
1261
1.39
1226
1.59
1297
BHP
0.33
0.40
0.48
0.57
0.66
0.78
0.90
1.03
1.19
1.2
RPM
1172
1201
1231
1262
1294
1326
1359
1393
1427
BHP
1.06
1.16
1.28
1.41
1.55
1.70
1.87
2.05
2.24
1.0
BHP
0.90
1.00
1.11
1.23
1.36
1.50
1.66
1.84
2.02
2.0
BHP
1.77
1.90
2.04
2.20
2.36
2.55
2.74
-----
Italicized area --- X13 electric (direct drive motor, see page 38 for speed/torque setting).
Med static motor and drive (belt drive)
High static motor and drive (belt drive)
Table 32 – 548J*06
CFM
1500
1625
1750
1875
2000
2125
2250
2375
2500
RPM
902
945
988
1033
1078
1124
1170
1217
1265
BHP
0.85
0.96
1.09
1.23
1.39
1.56
1.74
1.95
2.17
RPM
1147
1185
1223
1263
1303
1343
1385
1427
1470
RPM
1277
1313
1350
1387
1426
1464
1504
1544
1585
AVAILABLE EXTERNAL STATIC PRESSURE (IN. WG)
1.4
1.6
1.8
BHP
RPM
BHP
RPM
1.33
1336
1.50
1392
1.47
1371
1.65
1427
1.63
1407
1.81
1462
1.80
1444
1.99
1498
1.98
1482
2.19
1535
2.18
1520
2.40
1573
2.40
1559
2.62
1611
2.63
1598
2.87
--2.89
-------
BHP
1.67
1.83
2.01
2.19
2.40
2.62
2.85
-----
RPM
1445
1479
1514
1550
1586
1623
-------
0.2
RPM
794
840
888
936
984
1033
1083
1133
1183
CFM
1500
1625
1750
1875
2000
2125
2250
2375
2500
5 TON VERTICAL SUPPLY
AVAILABLE EXTERNAL STATIC PRESSURE (IN. WG)
0.4
0.6
0.8
BHP
RPM
BHP
RPM
0.55
993
0.69
1074
0.64
1034
0.80
1113
0.75
1075
0.92
1153
0.87
1117
1.05
1193
1.00
1160
1.19
1235
1.15
1204
1.35
1277
1.32
1248
1.53
1319
1.50
1293
1.72
1363
1.70
1339
1.93
1406
BHP
0.41
0.49
0.59
0.70
0.82
0.96
1.11
1.28
1.47
1.2
RPM
1214
1251
1289
1327
1366
1406
1446
1487
1529
BHP
1.16
1.30
1.44
1.60
1.78
1.97
2.18
2.40
2.64
Italicized area --- X13 electric (direct drive motor, see page 38 for speed/torque setting).
Non--- shaded area --- X13 electric drive motor, see page 38 for speed/torque setting.
Med static motor and drive (belt drive)
High static motor and drive (belt drive)
41
1.0
BHP
1.00
1.13
1.26
1.41
1.58
1.76
1.96
2.17
2.41
2.0
BHP
1.85
2.02
2.20
2.40
2.61
2.84
-------
548J
Table 31 – 548J*06
FAN PERFORMANCE (cont.)
Table 33 – 548J*07
CFM
1800
1950
2100
2250
2400
2550
2700
2850
3000
548J
RPM
927
973
1019
1067
1115
1164
1214
1264
1315
BHP
0.98
1.13
1.29
1.46
1.66
1.88
2.12
2.39
2.68
RPM
1174
1213
1253
1294
1336
1379
1422
1467
1512
RPM
1308
1345
1382
1420
1460
1500
1541
-----
AVAILABLE EXTERNAL STATIC PRESSURE (IN. WG)
1.4
1.6
1.8
BHP
RPM
BHP
RPM
1.51
1369
1.70
1427
1.68
1405
1.88
1462
1.87
1441
2.08
1498
2.08
1479
2.29
1534
2.31
1517
2.53
1572
2.55
1557
2.79
--2.83
-----------------------
BHP
1.90
2.09
2.29
2.51
2.76
---------
RPM
1483
1517
1552
1587
-----------
RPM
1006
1060
1115
1170
1227
1284
1342
1400
1459
AVAILABLE EXTERNAL STATIC PRESSURE (IN. WG)
0.4
0.6
0.8
BHP
RPM
BHP
RPM
0.80
1092
0.97
1169
0.95
1143
1.13
1218
1.12
1195
1.32
1268
1.32
1248
1.53
1319
1.54
1302
1.76
1371
1.78
1357
2.02
1424
2.06
1412
2.31
1478
2.36
1469
2.62
1532
2.69
-------
BHP
1.14
1.32
1.52
1.74
1.99
2.26
2.56
2.89
---
RPM
1239
1287
1335
1385
1435
1487
1539
-----
RPM
1365
1410
1457
1504
1552
---------
AVAILABLE EXTERNAL STATIC PRESSURE (IN. WG)
1.4
1.6
1.8
BHP
RPM
BHP
RPM
1.69
1422
1.88
1477
1.91
1467
2.11
1520
2.14
1512
2.35
1565
2.40
1559
2.62
1611
2.68
---------------------------------------
BHP
2.08
2.31
2.57
2.85
-----------
RPM
1528
1572
1616
-------------
0.2
RPM
----923
974
1026
1079
1132
1186
1240
CFM
1800
1950
2100
2250
2400
2550
2700
2850
3000
6 TON HORIZONTAL SUPPLY
AVAILABLE EXTERNAL STATIC PRESSURE (IN. WG)
0.4
0.6
0.8
BHP
RPM
BHP
RPM
0.66
1018
0.82
1100
0.79
1061
0.95
1140
0.92
1104
1.10
1182
1.08
1149
1.27
1224
1.26
1195
1.46
1268
1.46
1241
1.67
1312
1.67
1289
1.90
1358
1.92
1336
2.15
1404
2.18
1385
2.43
1451
BHP
----0.75
0.90
1.06
1.25
1.46
1.69
1.94
1.2
RPM
1244
1281
1320
1359
1400
1441
1483
1527
---
BHP
1.33
1.49
1.67
1.87
2.09
2.33
2.59
2.87
---
1.0
BHP
1.15
1.31
1.48
1.66
1.87
2.10
2.35
2.63
2.93
2.0
BHP
2.10
2.30
2.51
2.74
-----------
Std static motor and drive (belt drive)
Med static motor and drive (belt drive)
High static motor and drive (belt drive)
Table 34 – 548J*07
CFM
1800
1950
2100
2250
2400
2550
2700
2850
3000
0.2
RPM
907
965
1024
1083
1143
1203
1264
1326
1387
CFM
1800
1950
2100
2250
2400
2550
2700
2850
3000
6 TON VERTICAL SUPPLY
BHP
0.63
0.77
0.93
1.11
1.32
1.55
1.81
2.09
2.41
1.2
RPM
1304
1350
1398
1446
1496
1546
-------
BHP
1.51
1.71
1.93
2.18
2.45
2.75
-------
Std static motor and drive (belt drive)
Med static motor and drive (belt drive)
High static motor and drive (belt drive)
42
1.0
BHP
1.32
1.51
1.72
1.96
2.22
2.50
2.82
-----
2.0
BHP
2.28
2.52
2.79
-------------
FAN PERFORMANCE (cont.)
CFM
2250
2438
2625
2813
3000
3188
3375
3563
3750
BHP
----0.40
0.47
0.55
0.65
0.75
0.86
0.99
BHP
0.66
0.73
0.82
0.91
1.02
1.13
1.26
1.39
1.54
RPM
725
733
743
753
765
779
793
808
824
BHP
0.94
1.03
1.13
1.24
1.36
1.49
1.63
1.78
1.94
AVAILABLE EXTERNAL STATIC PRESSURE (IN. WG)
1.4
1.6
1.8
RPM
BHP
RPM
BHP
RPM
847
1.09
903
1.25
957
852
1.19
907
1.36
959
858
1.30
911
1.47
963
865
1.41
917
1.59
967
874
1.54
925
1.72
974
884
1.68
933
1.87
981
895
1.82
943
2.02
990
907
1.98
954
2.19
1000
920
2.15
966
2.36
1011
BHP
1.41
1.52
1.64
1.77
1.91
2.06
2.22
2.40
2.58
RPM
1009
1010
1012
1016
1021
1028
1035
1044
1054
0.2
RPM
----465
487
510
534
557
582
606
CFM
2250
2438
2625
2813
3000
3188
3375
3563
3750
7.5 TON HORIZONTAL SUPPLY
AVAILABLE EXTERNAL STATIC PRESSURE (IN. WG)
0.4
0.6
0.8
RPM
BHP
RPM
BHP
RPM
509
0.40
587
0.52
659
525
0.46
600
0.59
669
543
0.53
614
0.67
680
561
0.61
629
0.76
693
580
0.70
646
0.86
707
600
0.80
663
0.96
722
621
0.91
681
1.08
738
642
1.03
700
1.21
755
664
1.17
720
1.35
773
1.2
RPM
788
794
802
811
821
832
845
858
873
1.0
BHP
0.80
0.88
0.97
1.08
1.19
1.31
1.44
1.58
1.74
2.0
BHP
1.58
1.70
1.82
1.96
2.11
2.26
2.43
2.61
2.80
Std static motor and drive (belt drive)
Med static motor and drive (belt drive)
High static motor and drive (belt drive)
Table 36 – 548J*08
CFM
2250
2438
2625
2813
3000
3188
3375
3563
3750
BHP
--0.37
0.45
0.53
0.62
0.72
0.84
0.97
1.11
BHP
0.66
0.75
0.85
0.96
1.08
1.21
1.36
1.52
1.68
RPM
713
729
745
763
780
799
818
837
857
BHP
0.89
1.00
1.12
1.25
1.39
1.54
1.70
1.88
2.07
AVAILABLE EXTERNAL STATIC PRESSURE (IN. WG)
1.4
1.6
1.8
RPM
BHP
RPM
BHP
RPM
812
1.02
856
1.14
899
826
1.13
870
1.26
912
841
1.26
885
1.40
926
857
1.40
900
1.55
941
873
1.55
916
1.70
956
890
1.71
932
1.87
972
907
1.88
949
2.05
988
925
2.06
966
2.25
1005
944
2.26
984
2.45
1022
BHP
1.26
1.40
1.54
1.69
1.86
2.04
2.23
2.43
2.65
RPM
939
952
966
980
995
1010
1026
1042
1059
0.2
RPM
--470
494
518
543
568
593
619
645
CFM
2250
2438
2625
2813
3000
3188
3375
3563
3750
7.5 TON VERTICAL SUPPLY
AVAILABLE EXTERNAL STATIC PRESSURE (IN. WG)
0.4
0.6
0.8
RPM
BHP
RPM
BHP
RPM
528
0.43
597
0.54
658
548
0.50
615
0.62
675
569
0.58
634
0.71
692
590
0.67
653
0.82
710
612
0.77
673
0.93
729
635
0.89
694
1.05
749
658
1.01
716
1.19
769
681
1.15
737
1.33
789
705
1.30
760
1.49
810
1.2
RPM
764
779
795
811
828
846
864
882
902
Std static motor and drive (belt drive)
Med static motor and drive (belt drive)
High static motor and drive (belt drive)
43
1.0
BHP
0.78
0.88
0.99
1.11
1.24
1.38
1.53
1.70
1.88
2.0
BHP
1.39
1.53
1.68
1.84
2.02
2.21
2.40
2.62
2.84
548J
Table 35 – 548J*08
FAN PERFORMANCE (cont.)
Table 37 – 548J*09
CFM
2550
2763
2975
3188
3400
3613
3825
4038
4250
548J
BHP
0.39
0.47
0.57
0.68
0.80
0.94
1.09
1.26
1.45
BHP
0.80
0.91
1.03
1.17
1.31
1.48
1.66
1.85
2.07
RPM
747
760
774
789
806
824
843
864
885
BHP
1.11
1.24
1.37
1.53
1.69
1.87
2.07
2.28
2.51
AVAILABLE EXTERNAL STATIC PRESSURE (IN. WG)
1.4
1.6
1.8
RPM
BHP
RPM
BHP
RPM
863
1.28
916
1.45
968
871
1.41
924
1.59
974
882
1.55
932
1.74
981
894
1.71
943
1.90
990
907
1.88
955
2.09
1001
922
2.07
968
2.28
1013
938
2.28
983
2.49
1027
955
2.50
999
2.72
1041
973
2.74
1015
2.97
1057
BHP
1.62
1.77
1.93
2.10
2.29
2.49
2.71
2.95
3.21
RPM
1018
1022
1028
1036
1046
1057
-------
0.2
RPM
468
493
520
547
575
603
631
660
689
CFM
2550
2763
2975
3188
3400
3613
3825
4038
4250
8.5 TON HORIZONTAL SUPPLY
AVAILABLE EXTERNAL STATIC PRESSURE (IN. WG)
0.4
0.6
0.8
RPM
BHP
RPM
BHP
RPM
546
0.52
618
0.66
684
567
0.61
635
0.76
699
589
0.72
654
0.87
716
613
0.83
675
1.00
733
637
0.96
696
1.14
752
662
1.11
719
1.29
773
688
1.27
742
1.46
794
714
1.45
766
1.65
816
741
1.65
790
1.86
838
1.2
RPM
806
817
829
843
858
874
891
910
930
1.0
BHP
0.96
1.07
1.20
1.34
1.50
1.67
1.86
2.06
2.29
2.0
BHP
1.80
1.95
2.12
2.30
2.50
2.71
-------
Std static motor and drive (belt drive)
Med static motor and drive (belt drive)
High static motor and drive (belt drive)
Table 38 – 548J*09
CFM
2550
2763
2975
3188
3400
3613
3825
4038
4250
BHP
0.43
0.53
0.63
0.76
0.89
1.05
1.22
1.41
1.62
BHP
0.83
0.95
1.09
1.25
1.42
1.60
1.81
2.03
2.28
RPM
746
766
787
808
831
854
877
901
926
BHP
1.09
1.24
1.40
1.57
1.76
1.97
2.20
2.45
2.71
AVAILABLE EXTERNAL STATIC PRESSURE (IN. WG)
1.4
1.6
1.8
RPM
BHP
RPM
BHP
RPM
841
1.23
885
1.36
926
859
1.38
902
1.53
943
878
1.55
921
1.71
961
898
1.74
940
1.90
979
919
1.94
960
2.12
998
940
2.16
980
2.34
1018
962
2.40
1001
2.59
1039
984
2.65
1023
2.86
-------------
BHP
1.50
1.68
1.86
2.07
2.29
2.53
2.79
-----
RPM
965
982
999
1017
1036
1055
-------
0.2
RPM
495
524
552
582
611
641
672
702
733
CFM
2550
2763
2975
3188
3400
3613
3825
4038
4250
8.5 VERTICAL SUPPLY
AVAILABLE EXTERNAL STATIC PRESSURE (IN. WG)
0.4
0.6
0.8
RPM
BHP
RPM
BHP
RPM
570
0.56
634
0.70
693
595
0.67
657
0.81
714
620
0.79
681
0.94
736
647
0.92
705
1.08
759
674
1.07
730
1.24
782
701
1.23
756
1.42
806
729
1.42
782
1.61
831
758
1.62
809
1.83
857
787
1.84
836
2.06
883
1.2
RPM
795
814
834
855
876
898
921
944
968
Std static motor and drive (belt drive)
Med static motor and drive (belt drive)
High static motor and drive (belt drive)
44
1.0
BHP
0.96
1.09
1.24
1.41
1.59
1.79
2.00
2.24
2.49
2.0
BHP
1.64
1.82
2.02
2.24
2.47
2.72
-------
FAN PERFORMANCE (cont.)
3 phase 3 phase 3 phase 3 phase 3 phase 3 phase
09
08
07
06
05
04
UNIT
MOTOR/DRIVE COMBO
MOTOR PULLEY TURNS OPEN
2
2.5
3
3.5
0
0.5
1
1.5
4
4.5
5
Medium Static
1251
1208
1165
1121
1078
1035
992
949
905
862
819
High Static
1466
1423
1380
1337
1294
1251
1207
1164
1121
1078
1035
Medium Static
1303
1265
1226
1188
1150
1112
1073
1035
997
958
920
High Static
1466
1423
1380
1337
1294
1251
1207
1164
1121
1078
1035
Medium Static
1380
1349
1317
1286
1254
1223
1192
1160
1129
1097
1066
High Static
1639
1596
Standard Static
Medium Static
High Static
Standard Static
Medium Static
High Static
Standard Static
Medium Static
High Static
1192
1380
1639
652
838
1084
652
838
1084
1161
1349
1596
633
813
1059
633
813
1059
1553
1510
1467
1424
1380
1337
1294
1251
1208
1129
1317
1553
614
789
1035
614
789
1035
1098
1286
1510
594
764
1010
594
764
1010
1066
1254
1467
575
739
986
575
739
986
1035
1223
1424
556
715
961
556
715
961
1004
1192
1380
537
690
936
537
690
936
972
1160
1337
518
665
912
518
665
912
941
1129
1294
498
640
887
498
640
887
909
1097
1251
479
616
863
479
616
863
878
1066
1208
460
591
838
460
591
838
NOTE: Do not adjust pulley further than 5 turns open.
--- Factory settings
45
548J
Table 39 – PULLEY ADJUSTMENT
ECONOMIZER, BAROMETRIC RELIEF AND PE PERFORMANCE
2500
Horizontal Economizers
2000
1500
RELIEF FLOW (CFM)
RELIEF FLOW (CFM)
2500
3-6 Ton
7.5-8.5 Ton
1000
500
Vertical Economizers
2000
1500
3 - 6 Ton
7.5 - 8.5 Ton
1000
500
0
0
0
0.05
0.1
0.15
0.2
0.25
0
0.3
0.05
0.1
0.15
0.2
0.25
0.3
RETURN DUCT STATIC PRESS URE (in. wg)
RETURN DUCT STATIC PRESS URE (in. wg)
C09028
C09031
30
Fig. 13 -- Barometric Relief Flow Capacity
LEAKAGE ACROSS DAMPER (CFM)
LEAKAGE ACROSS DAMPER (CFM)
548J
Fig. 9 -- Barometric Relief Flow Capacity
Horizontal Economizers
25
20
3 - 6 Ton
7.5 - 8.5 Ton
15
10
5
0
0.00
0.10
0.20
0.30
0.40
30
Vertical Economizers
25
20
3 - 6 Ton
7.5 - 8.5 Ton
15
10
5
0
0.00
0.10
0.50
0.20
0.30
0.40
0.50
STATIC PRESS URE DELTA (in. wg)
STATIC PRESS URE DELTA (in. wg)
C09029
C09032
6000
Fig. 14 -- Outdoor Air Damper Leakage
6000
Horizontal Economizers
5000
4000
RETURN AIR FLOW (CFM)
RETURN AIR FLOW (CFM)
Fig. 10 -- Outdoor Air Damper Leakage
3 - 6 Ton
7.5 - 8.5 Ton
3000
2000
1000
Vertical Economizers
5000
4000
3 - 6 Ton
7.5 - 8.5 Ton
3000
2000
1000
0
0
0
0.1
0.2
0.3
0
0.4
0.1
0.2
0.3
0.4
RETURN DUCT STATIC PRESS URE DROP (in. wg)
RETURN DUCT STATIC PRESS URE DROP (in. wg)
C09030
C09033
5000
Fig. 15 -- Return Air Pressure Drop
Vertical Power Exhaust
4000
3000
2- 6 Ton
2000
7. 5- 8.5 Ton
1000
EXHAUST
AIRFLOW (cfm)
EXHAUST
AIRFLOW (cfm)
Fig. 11 -- Return Air Pressure Drop
0
5000
4000
3000
2- 6 Ton
2000
7. 5- 12 .5 Ton
1000
0
0
0.1
0.2
0.3
0.4
0.5
0
RETURN DUCT STATIC PRESSURE (in. wg)
0.1
0.2
0.3
0.4
0.5
RETURN DUCT STATIC PRESSURE (in. wg)
C08012
C09034
Fig. 12 -- Horizontal Power Exhaust Performance
Fig. 16 -- Power Exhaust Performance
46
ELECTRICAL INFORMATION
V-- Ph-- Hz
1-- Stage Cooling
VOLTAGE
RANGE
COMP (ea)
OFM (ea)
IFM
MIN
MAX
RLA
LRA
WATTS
FLA
TYPE
208--1--60
230--1--60
187
187
253
253
17.9
17.9
112
112
190
190
0.9
0.9
208--3--60
187
253
13.2
88
190
0.9
230--3--60
187
253
13.2
88
190
0.9
460--3--60
414
506
6.0
44
190
0.5
575--3--60
518
633
NA
NA
190
0.4
DD--STD
DD--STD
DD--STD
MED
HIGH
DD--STD
MED
HIGH
DD--STD
MED
HIGH
DD--STD
MED
HIGH
Table 41 – 548J*05
V-- Ph-- Hz
Max
WATTS
980
980
980
2000
2000
980
2000
2000
980
2000
2000
980
2000
2000
Max
AMP Draw
7.8
7.8
7.8
5.5
5.5
7.8
5.5
5.5
8.0
2.7
2.7
4.2
2.5
2.1
EFF at Full Load
FLA
84%
84%
84%
80%
80%
84%
80%
80%
84%
80%
80%
84%
80%
80%
7.4
7.4
7.4
5.2
5.2
7.4
5.2
5.2
7.6
2.6
2.6
4.0
2.4
2.0
1-- Stage Cooling
VOLTAGE
RANGE
COMP (ea)
4 TONS
OFM (ea)
IFM
MIN
MAX
RLA
LRA
WATTS
FLA
TYPE
208--1--60
230--1--60
187
187
253
253
21.8
21.8
117
117
325
325
1.5
1.5
208--3--60
187
253
13.7
83
325
1.5
230--3--60
187
253
13.7
83
325
1.5
460--3--60
414
506
6.2
41
325
0.8
575--3--60
518
633
4.8
37
325
0.6
DD--- STD
DD--- STD
DD--- STD
MED
HIGH
DD--- STD
MED
HIGH
DD--- STD
MED
HIGH
DD--- STD
MED
HIGH
Table 42 – 548J*06
V ---Ph---Hz
3 TONS
Max
WATTS
980
980
980
2000
2000
980
2000
2000
980
2000
2000
980
2000
2000
Max
AMP Draw
7.8
7.8
7.8
5.5
5.5
7.8
5.5
5.5
8.0
2.7
2.7
4.2
2.5
2.1
EFF at Full Load
FLA
84%
84%
84%
80%
80%
84%
80%
80%
84%
80%
80%
84%
80%
80%
7.4
7.4
7.4
5.2
5.2
7.4
5.2
5.2
7.6
2.6
2.6
4.0
2.4
2.0
1-- Stage Cooling
VOLTAGE
RANGE
COM
P
(ea)
OFM (ea)
5 TONS
IFM
MIN
MAX
RLA
LRA
WATTS
FLA
TYPE
208--- 1--- 60
230--- 1--- 60
187
187
253
253
26.2
26.2
134
134
325
325
1.5
1.5
208--- 3--- 60
187
253
15.6
110
325
1.5
230--- 3--- 60
187
253
15.6
110
325
1.5
460--- 3--- 60
414
506
7.7
52
325
0.8
575--- 3--- 60
518
633
5.8
39
325
0.6
DD--- STD
DD--- STD
DD--- STD
MED
HIGH
DD--- STD
MED
HIGH
DD--- STD
MED
HIGH
DD--- STD
MED
HIGH
47
Max
WATTS
980
980
980
2000
2770
980
2000
2770
980
2000
2770
980
2000
2770
Max
AMP Draw
7.8
7.8
7.8
5.5
7.9
7.8
5.5
7.9
8.0
2.7
3.6
4.2
2.1
2.9
EFF at Full Load
FLA
84%
84%
84%
80%
81%
84%
80%
81%
84%
80%
81%
84%
80%
81%
7.4
7.4
7.4
5.2
7.5
7.4
5.2
7.5
7.6
2.6
3.4
4.0
2.0
2.8
548J
Table 40 – 548J*04
ELECTRICAL INFORMATION (cont.)
Table 43 – 548J*07
V ---Ph---Hz
VOLTAGE
RANGE
MIN
548J
1-- Stage Cooling
MAX
COMP (ea)
RLA
LRA
OFM (ea)
WATTS
IFM
FLA
208--- 3--- 60
187
253
19.0
123
325
1.5
230--- 3--- 60
187
253
19.0
123
325
1.5
460--- 3--- 60
414
506
9.7
62
325
0.8
575--- 3--- 60
518
633
7.4
50
325
0.6
Table 44 – 548J*08
V ---Ph---Hz
6 TONS
Max
WATTS
1600
2770
2770
1600
2770
2770
1600
2770
2770
1600
2770
2770
TYPE
STD
MED
HIGH
STD
MED
HIGH
STD
MED
HIGH
STD
MED
HIGH
EFF at Full Load
FLA
80%
81%
81%
80%
81%
81%
80%
81%
81%
80%
81%
81%
5.2
7.5
7.5
5.2
7.5
7.5
2.6
3.4
3.4
2.4
2.8
2.8
2-- Stage Cooling
VOLTAGE
RANGE
COMP (Cir 1)
COMP (Cir 2)
7.5 TONS
OFM (ea)
RLA
LRA
RLA
LRA
WATTS
FLA
MIN
MAX
208--- 3--- 60
187
253
13.1
83
13.1
83
325
1.5
230--- 3--- 60
187
253
13.1
83
13.1
83
325
1.5
460--- 3--- 60
414
506
6.1
41
6.1
41
325
0.8
575--- 3--- 60
518
633
4.4
33
4.4
33
325
0.6
Table 45 – 548J*09
V ---Ph---Hz
Max
AMP Draw
5.5
7.9
7.9
5.5
7.9
7.9
2.7
3.6
3.6
2.5
2.9
2.9
IFM
TYPE
Max
WATTS
STD
MED
HIGH
STD
MED
HIGH
STD
MED
HIGH
STD
MED
HIGH
1310
2770
2770
1310
2770
2770
1310
2770
2770
1310
2770
2770
Max
AMP
Draw
5.5
7.9
7.9
5.5
7.9
7.9
2.7
3.6
3.6
2.5
2.9
2.9
2-- Stage Cooling
VOLTAGE
RANGE
COMP (Cir 1)
COMP (Cir 2)
FLA
5.2
7.5
7.5
5.2
7.5
7.5
2.6
3.4
3.4
2.4
2.8
2.8
8.5 TONS
OFM (ea)
RLA
LRA
RLA
LRA
WATTS
FLA
MIN
MAX
208--- 3--- 60
187
253
16.0
91
13.7
83
325
1.5
230--- 3--- 60
187
253
16.0
91
13.7
83
325
1.5
460--- 3--- 60
414
506
7.0
46
6.2
41
325
0.8
575--- 3--- 60
518
633
5.6
37
4.8
37
325
0.6
48
EFF at
Full
Load
80%
81%
81%
80%
81%
81%
80%
81%
81%
80%
81%
81%
IFM
TYPE
Max
WATTS
STD
MED
HIGH
STD
MED
HIGH
STD
MED
HIGH
STD
MED
HIGH
1310
2770
2770
1310
2770
2770
1310
2770
2770
1310
2770
2770
Max
AMP
Draw
5.5
7.9
7.9
5.5
7.9
7.9
2.7
3.6
3.6
2.5
2.9
2.9
EFF at
Full
Load
80%
80%
80%
80%
80%
80%
80%
80%
80%
80%
80%
81%
FLA
5.2
7.5
7.5
5.2
7.5
7.5
2.6
3.4
3.4
2.4
2.8
2.8
ELEC. HTR
IFM
TYPE
208/230---3---60
MCA
MOCP
DISC. SIZE
FLA
LRA
MCA
MOCP
DISC. SIZE
FLA
LRA
DD--- STD
30.7
50.6/53.6
60.1/64.6
69.9/76.1
78.1/85.4
89.3/98.4
24.8
36.3/38.1
41.8/44.3
47.4/50.9
52.2/56.4
66.6/72.9
22.6
34.1/35.9
39.6/42.1
45.2/48.7
50.0/54.2
64.4/70.7
22.6
34.1/35.9
39.6/42.1
45.2/48.7
50.0/54.2
64.4/70.7
16.0
25.0
29.3
33.3
37.0
10.6
19.6
23.9
27.9
31.6
10.6
19.6
23.9
27.9
31.6
5.4
45
60/60
70/70
70/80
80/90
90/100
30
45/45
50/50
50/60
60/60
70/80
30
45/45
45/50
50/50
50/60
70/80
30
45/45
45/50
50/50
50/60
70/80
20
30
30
35
40
15
20
25
30
35
15
20
25
30
35
15
30
48/51
57/61
66/72
74/81
84/92
25
35/37
40/43
46/49
50/54
63/69
22
33/34
38/40
43/46
47/51
61/66
22
33/34
38/40
43/46
47/51
61/66
16
24
28
32
36
10
19
23
26
30
10
19
23
26
30
5
121
137/139
145/148
152/157
159/165
215/229
97
106/108
111/113
115/118
119/122
130/136
109
118/120
123/125
127/130
131/134
142/148
120
129/131
134/136
138/141
142/145
153/159
53
60
64
67
70
54
61
65
68
71
60
67
71
74
77
5
32.6
52.5/55.5
62.0/66.5
71.8/78.0
80.0/87.3
91.2/100.3
26.7
38.2/40.0
43.7/46.2
49.3/52.8
54.1/58.3
68.5/74.8
24.5
36.0/37.8
41.5/44.0
47.1/50.6
51.9/56.1
66.3/72.6
24.5
36.0/37.8
41.5/44.0
47.1/50.6
51.9/56.1
66.3/72.6
17.0
26.0
30.3
34.3
38.0
11.6
20.6
24.9
28.9
32.6
11.6
20.6
24.9
28.9
32.6
7.4
50
60/60
70/70
80/80
80/90
100/110
30
45/50
50/50
50/60
60/60
70/80
30
45/45
50/50
50/60
60/60
70/80
30
45/45
50/50
50/60
60/60
70/80
20
30
35
35
40
15
25
25
30
35
15
25
25
30
35
15
32
51/53
59/63
68/74
76/83
86/95
27
37/39
43/45
48/51
52/56
65/71
24
35/37
40/42
45/48
50/53
63/69
24
35/37
40/42
45/48
50/53
63/69
17
26
30
33
37
12
20
24
27
31
12
20
24
27
31
7
123
139/141
147/150
154/159
161/167
217/231
99
108/110
113/115
117/120
121/124
132/138
111
120/122
125/127
129/132
133/136
144/150
122
131/133
136/138
140/143
144/147
155/161
54
61
65
68
71
55
62
66
69
72
61
68
72
75
78
7
MED
---
---
3.4
15
3
8
5.4
15
5
10
HIGH
---
---
2.9
15
3
12
4.9
15
5
14
DD--- STD
MED
DD--- STD
460---3---60
FLA
WITH P.E.
--15.9/18.3
23.5/27.1
31.4/36.3
37.9/43.8
46.9/54.2
--9.2/10.6
13.6/15.6
18.1/20.9
21.9/25.3
33.4/38.5
--9.2/10.6
13.6/15.6
18.1/20.9
21.9/25.3
33.4/38.5
--9.2/10.6
13.6/15.6
18.1/20.9
21.9/25.3
33.4/38.5
--7.2
10.6
13.8
16.8
--7.2
10.6
13.8
16.8
--7.2
10.6
13.8
16.8
---
HIGH
MED
HIGH
575---3---60
WITHOUT P.E.
Nom
(kW)
--3.3/4.4
4.9/6.5
6.5/8.7
7.9/10.5
9.8/13.0
--3.3/4.4
4.9/6.5
6.5/8.7
7.9/10.5
12.0/16.0
--3.3/4.4
4.9/6.5
6.5/8.7
7.9/10.5
12.0/16.0
--3.3/4.4
4.9/6.5
6.5/8.7
7.9/10.5
12.0/16.0
--6.0
8.8
11.5
14.0
--6.0
8.8
11.5
14.0
--6.0
8.8
11.5
14.0
---
DD--- STD
548J*04
WITHOUT C.O. or UNPWR C.O.
LEGEND
C.O.
--- Convenient outlet
DD
--- Electric Drive X13 Motor
DISC
--- Disconnect
FLA
--- Full load amps
IFM
--- Indoor fan motor
LRA
--- Locked rotor amps
MCA
--- Minimum circuit amps
MOCP
--- Maximum over current protection
P.E.
--- Power exhaust
UNPWRD C.O. --- Unpowered convenient outlet
NOTES:
1. In compliance with NEC requirements for multimotor and
combination load equipment (refer to NEC Articles 430 and
440), the overcurrent protective device for the unit shall be
fuse or HACR breaker. Canadian units may be fuse or circuit breaker.
2. Unbalanced 3-Phase Supply Voltage
Never operate a motor where a phase imbalance in supply
voltage is greater than 2%. Use the following formula to determine the percentage of voltage imbalance.
% Voltage Imbalance
= 100 x
Example: Supply voltage is 230-3-60
AB = 224V
BC = 231V
AC = 226V
Average Voltage =
=
(224 + 231 + 226)
3
227
=
681
3
Determine maximum deviation from average voltage.
(AB) 227 – 224 = 3V
Maximum deviation is 4V.
(BC) 231 – 227 = 4V
Determine percent of voltage imbalance.
% Voltage Imbalance
= 100 x
4
227
= 1.76%
This amount of phase imbalance is satisfactory as it is below the
maximum allowable 2%.
IMPORTANT: If the supply voltage phase imbalance is more than
2%, contact your local electric utility company immediately.
max voltage deviation from average voltage
average voltage
49
548J
208/230---1---60 NOM. V ---PH ---HZ
UNIT
Table 46 – MCA/MOCP DETERMINATION WITHOUT C.O. OR UNPWRD C.O.
208/230---1---60 NOM. V ---PH ---HZ
UNIT
Table 46 – (cont.) MCA/MOCP DETERMINATION WITHOUT C.O. OR UNPWRD C.O.
ELEC. HTR
IFM
TYPE
208/230---3---60
460---3---60
MCA
MOCP
DISC. SIZE
FLA
LRA
MCA
MOCP
DISC. SIZE
FLA
LRA
36.2
56.0/59.0
75.4/81.5
94.8/103.9
114.7/126.8
130.9/145.5
26.0
43.0/45.5
48.7/52.2
67.8/74.2
80.8/89.2
23.8
40.8/43.3
46.5/50.0
65.6/72.0
78.6/87.0
23.8
40.8/43.3
46.5/50.0
65.6/72.0
78.6/87.0
16.5
25.5
33.8
37.5
51.1
11.2
20.2
28.4
32.2
45.8
11.2
20.2
28.4
32.2
45.8
50
60/60
80/90
100/110
125/150
150/150
30
50/50
50/60
70/80
90/90
30
50/50
50/50
70/80
80/90
30
50/50
50/50
70/80
80/90
20
30
35
40
60
15
25
30
35
50
15
25
30
35
50
35
54/56
71/77
89/98
108/119
122/136
26
42/44
47/50
64/70
76/84
23
39/41
44/47
62/68
74/82
23
39/41
44/47
62/68
74/82
17
25
33
36
49
11
19
27
30
43
11
19
27
30
43
128
144/146
159/164
222/236
254/273
280/303
94
108/110
112/115
127/133
182/195
106
120/122
124/127
139/145
194/207
117
131/133
135/138
150/156
205/218
51
58
65
68
106
52
59
66
69
107
58
65
72
75
113
38.1
57.9/60.9
77.3/83.4
96.7/105.8
116.6/128.7
132.8/147.4
27.9
44.9/47.4
50.6/54.1
69.7/76.1
82.7/91.1
25.7
42.7/45.2
48.4/51.9
67.5/73.9
80.5/88.9
25.7
42.7/45.2
48.4/51.9
67.5/73.9
80.5/88.9
17.5
26.5
34.8
38.5
52.1
12.2
21.2
29.4
33.2
46.8
12.2
21.2
29.4
33.2
46.8
50
60/70
80/90
100/110
125/150
150/150
40
50/50
60/60
70/80
90/100
30
50/50
50/60
70/80
90/90
30
50/50
50/60
70/80
90/90
25
30
35
40
60
15
25
30
35
50
15
25
30
35
50
37
56/59
74/79
91/100
110/121
125/138
28
44/46
49/52
67/72
79/86
26
41/44
46/50
64/70
76/84
26
41/44
46/50
64/70
76/84
18
26
34
37
50
12
20
28
32
44
12
20
28
32
44
130
146/148
161/166
224/238
256/275
282/305
96
110/112
114/117
129/135
184/197
108
122/124
126/129
141/147
196/209
119
133/135
137/140
152/158
207/220
52
59
66
69
107
53
60
67
70
108
59
66
73
76
114
DD--- STD
---
---
10.6
15
11
43
12.5
15
13
45
MED
---
---
9.0
15
9
46
10.9
15
11
48
HIGH
---
---
8.6
15
9
50
10.5
15
11
52
DD--- STD
MED
DD--- STD
MED
HIGH
575---3---60
FLA
WITH P.E.
--15.9/18.3
31.4/36.3
46.9/54.2
62.8/72.5
75.8/87.5
--13.6/15.6
18.1/20.9
33.4/38.5
43.8/50.5
--13.6/15.6
18.1/20.9
33.4/38.5
43.8/50.5
--13.6/15.6
18.1/20.9
33.4/38.5
43.8/50.5
--7.2
13.8
16.8
27.7
--7.2
13.8
16.8
27.7
--7.2
13.8
16.8
27.7
HIGH
548J*05
WITHOUT P.E.
Nom
(kW)
--3.3/4.4
6.5/8.7
9.8/13.0
13.1/17.4
15.8/21.0
--4.9/6.5
6.5/8.7
12.0/16.0
15.8/21.0
--4.9/6.5
6.5/8.7
12.0/16.0
15.8/21.0
--4.9/6.5
6.5/8.7
12.0/16.0
15.8/21.0
--6.0
11.5
14.0
23.0
--6.0
11.5
14.0
23.0
--6.0
11.5
14.0
23.0
DD--- STD
548J
WITHOUT C.O. or UNPWR C.O.
See Notes page 49.
50
ELEC. HTR
IFM
TYPE
208/230---3---60
FLA
MCA
MOCP
WITH P.E.
DISC. SIZE
FLA
LRA
MCA
MOCP
DISC. SIZE
FLA
LRA
--23.5/27.1
31.4/36.3
46.9/54.2
62.8/72.5
75.8/87.5
--13.6/15.6
21.9/25.3
33.4/38.5
43.8/50.5
55.2/63.8
--13.6/15.6
21.9/25.3
33.4/38.5
43.8/50.5
55.2/63.8
--13.6/15.6
21.9/25.3
33.4/38.5
43.8/50.5
55.2/63.8
--7.2
13.8
16.8
27.7
30.7
--7.2
13.8
16.8
27.7
30.7
--7.2
13.8
16.8
27.7
30.7
41.7
71.0/75.5
80.9/87.0
100.3/109.4
120.2/132.3
136.4/151.0
28.4
45.4/47.9
55.8/60.0
70.2/76.5
83.2/91.5
97.4/108.2
26.2
43.2/45.7
53.6/57.8
68.0/74.3
81.0/89.3
95.2/106.0
28.5
45.5/48.0
55.9/60.1
70.3/76.6
83.3/91.6
97.5/108.3
18.0
27.0
35.3
39.0
52.7
56.4
13.0
22.0
30.3
34.0
47.7
51.4
13.8
22.8
31.1
34.8
48.5
52.2
60
80/80
90/100
110/110
125/150
150/175
40
50/50
60/70
80/80
90/100
100/110
40
50/50
60/60
70/80
90/90
100/110
40
50/50
60/70
80/80
90/100
100/110
25
30
40
40
60
60
20
25
35
35
50
60
20
25
35
35
50
60
40
67/72
76/82
94/103
113/124
128/141
28
44/46
53/57
67/72
79/86
92/102
26
41/44
51/55
64/70
76/84
89/99
28
44/46
53/57
67/73
79/86
92/102
19
27
34
38
50
54
13
21
29
32
45
48
14
22
30
33
46
49
145
169/172
176/181
239/253
271/290
297/320
121
135/137
143/146
154/160
209/222
231/249
144
158/160
166/169
177/183
232/245
254/272
170
184/186
192/195
203/209
258/271
280/298
62
69
76
79
117
123
69
76
83
86
124
130
82
89
96
99
137
143
43.6
72.9/77.4
82.8/88.9
102.2/111.3
122.1/134.2
138.3/152.9
30.3
47.3/49.8
57.7/61.9
72.1/78.4
85.1/93.4
99.3/110.1
28.1
45.1/47.6
55.5/59.7
69.9/76.2
82.9/91.2
97.1/107.9
30.4
47.4/49.9
57.8/62.0
72.2/78.5
85.2/93.5
99.4/110.2
19.0
28.0
36.3
40.0
53.7
57.4
14.0
23.0
31.3
35.0
48.7
52.4
14.8
23.8
32.1
35.8
49.5
53.2
60
80/80
100/100
110/125
125/150
150/175
45
50/60
60/70
80/80
90/100
100/125
40
50/50
60/60
70/80
90/100
100/110
45
50/60
60/70
80/80
90/100
100/125
25
30
40
45
60
60
20
25
35
40
50
60
20
25
35
40
50
60
43
70/74
79/84
96/105
115/126
130/143
30
46/48
56/59
69/75
81/88
94/104
28
43/46
53/57
66/72
78/86
91/101
30
46/48
56/60
69/75
81/89
94/104
20
28
36
39
52
55
14
22
30
33
46
49
15
23
31
34
47
50
147
171/174
178/183
241/255
273/292
299/322
123
137/139
145/148
156/162
211/224
233/251
146
160/162
168/171
179/185
234/247
256/274
172
186/188
194/197
205/211
260/273
282/300
63
70
77
80
118
124
70
77
84
87
125
131
83
90
97
100
138
144
DD--- STD
---
---
11.9
15
12
45
13.8
20
14
47
MED
---
---
9.9
15
10
52
11.8
15
12
54
HIGH
---
---
10.7
15
11
63
12.6
15
13
65
DD--- STD
MED
548J*06
HIGH
DD--- STD
460---3---60
WITHOUT P.E.
Nom
(kW)
--4.9/6.5
6.5/8.7
9.8/13.0
13.1/17.4
15.8/21.0
--4.9/6.5
7.9/10.5
12.0/16.0
15.8/21.0
19.9/26.5
--4.9/6.5
7.9/10.5
12.0/16.0
15.8/21.0
19.9/26.5
--4.9/6.5
7.9/10.5
12.0/16.0
15.8/21.0
19.9/26.5
--6.0
11.5
14.0
23.0
25.5
--6.0
11.5
14.0
23.0
25.5
--6.0
11.5
14.0
23.0
25.5
DD--- STD
MED
HIGH
575---3---60
WITHOUT C.O. or UNPWR C.O.
See Notes page 49.
51
548J
208/230---1---60 NOM. V ---PH ---HZ
UNIT
Table 46 – (cont.) MCA/MOCP DETERMINATION WITHOUT C.O. OR UNPWRD C.O.
NOM. V ---PH ---HZ
UNIT
Table 46 – (cont.) MCA/MOCP DETERMINATION WITHOUT C.O. OR UNPWRD C.O.
ELEC. HTR
IFM
TYPE
548J
208/230---3---60
STD
MED
548J*07
HIGH
460---3---60
STD
MED
575---3---60
HIGH
WITHOUT C.O. or UNPWR C.O.
WITHOUT P.E.
Nom
(kW)
FLA
MCA
MOCP
WITH P.E.
DISC. SIZE
FLA
LRA
MCA
MOCP
DISC. SIZE
FLA
LRA
--4.9/6.5
7.9/10.5
12.0/16.0
15.8/21.0
19.9/26.5
--4.9/6.5
7.9/10.5
12.0/16.0
15.8/21.0
19.9/26.5
--4.9/6.5
7.9/10.5
12.0/16.0
15.8/21.0
19.9/26.5
--6.0
11.5
14.0
23.0
25.5
--6.0
11.5
14.0
23.0
25.5
--6.0
11.5
14.0
23.0
25.5
--13.6/15.6
21.9/25.3
33.4/38.5
43.8/50.5
55.2/63.8
--13.6/15.6
21.9/25.3
33.4/38.5
43.8/50.5
55.2/63.8
--13.6/15.6
21.9/25.3
33.4/38.5
43.8/50.5
55.2/63.8
--7.2
13.8
16.8
27.7
30.7
--7.2
13.8
16.8
27.7
30.7
--7.2
13.8
16.8
27.7
30.7
30.5
47.5/50.0
57.8/62.1
72.2/78.6
85.2/93.6
99.5/110.2
32.8
49.8/52.3
60.1/64.4
74.5/80.9
87.5/95.9
101.8/112.5
32.8
49.8/52.3
60.1/64.4
74.5/80.9
87.5/95.9
101.8/112.5
15.5
24.5
32.8
36.5
50.2
53.9
16.3
25.3
33.6
37.3
51.0
54.7
16.3
25.3
33.6
37.3
51.0
54.7
45
60/60
60/70
80/80
90/100
100/125
50
60/60
70/70
80/90
90/100
110/125
50
60/60
70/70
80/90
90/100
110/125
25
30
35
40
60
60
25
30
35
40
60
60
25
30
35
40
60
60
30
45/47
55/59
68/74
80/88
93/103
32
48/50
57/61
71/76
83/90
96/106
32
48/50
57/61
71/76
83/90
96/106
15
23
31
34
47
50
16
24
32
35
48
51
16
24
32
35
48
51
146
160/162
168/171
179/185
234/247
256/274
183
197/199
205/208
216/222
271/284
293/311
183
197/199
205/208
216/222
271/284
293/311
73
80
87
90
128
134
92
99
106
109
147
153
92
99
106
109
147
153
32.4
49.4/51.9
59.7/64.0
74.1/80.5
87.1/95.5
101.4/112.1
34.7
51.7/54.2
62.0/66.3
76.4/82.8
89.4/97.8
103.7/114.4
34.7
51.7/54.2
62.0/66.3
76.4/82.8
89.4/97.8
103.7/114.4
16.5
25.5
33.8
37.5
51.2
54.9
17.3
26.3
34.6
38.3
52.0
55.7
17.3
26.3
34.6
38.3
52.0
55.7
50
60/60
60/70
80/90
90/100
110/125
50
60/60
70/70
80/90
90/100
110/125
50
60/60
70/70
80/90
90/100
110/125
25
30
40
40
60
60
25
30
40
40
60
60
25
30
40
40
60
60
32
47/50
57/61
70/76
82/90
95/105
34
50/52
60/63
73/79
85/92
98/108
34
50/52
60/63
73/79
85/92
98/108
16
24
32
36
48
52
17
25
33
36
49
52
17
25
33
36
49
52
148
162/164
170/173
181/187
236/249
258/276
185
199/201
207/210
218/224
273/286
295/313
185
199/201
207/210
218/224
273/286
295/313
74
81
88
91
129
135
93
100
107
110
148
154
93
100
107
110
148
154
STD
---
---
12.3
15
12
59
14.2
20
14
61
MED
---
---
12.7
20
12
74
14.6
20
15
76
HIGH
---
---
12.7
20
12
74
14.6
20
15
76
See Notes page 49.
52
ELEC. HTR
IFM
TYPE
208/230---3---60
STD
MED
HIGH
460---3---60
548J*08
STD
MED
HIGH
575---3---60
STD
MED
HIGH
WITHOUT C.O. or UNPWR C.O.
WITHOUT P.E.
Nom
(kW)
--7.8/10.4
12.0/16.0
18.6/24.8
24.0/32.0
31.8/42.4
--7.8/10.4
12.0/16.0
18.6/24.8
24.0/32.0
31.8/42.4
--7.8/10.4
12.0/16.0
18.6/24.8
24.0/32.0
31.8/42.4
--13.9
16.5
27.8
33.0
41.7
--13.9
16.5
27.8
33.0
41.7
--13.9
16.5
27.8
33.0
41.7
--17.0
34.0
--17.0
34.0
--17.0
34.0
FLA
--21.7/25.0
33.4/38.5
51.7/59.7
66.7/77.0
88.4/102.0
--21.7/25.0
33.4/38.5
51.7/59.7
66.7/77.0
88.4/102.0
--21.7/25.0
33.4/38.5
51.7/59.7
66.7/77.0
88.4/102.0
--16.7
19.8
33.4
39.7
50.2
--16.7
19.8
33.4
39.7
50.2
--16.7
19.8
33.4
39.7
50.2
--20.4
40.9
--20.4
40.9
--20.4
40.9
MCA
MOCP
37.7
64.8/68.9
79.4/85.8
102.3/112.3
121.1/133.9
148.2/165.2
40.0
67.1/71.2
81.7/88.1
104.6/114.6
123.4/136.2
150.5/167.5
40.0
67.1/71.2
81.7/88.1
104.6/114.6
123.4/136.2
150.5/167.5
17.9
38.8
42.7
59.7
67.6
80.7
18.7
39.6
43.5
60.5
68.4
81.5
18.7
39.6
43.5
60.5
68.4
81.5
13.5
39.0
64.6
13.9
39.4
65.0
13.9
39.4
65.0
50
70/70
80/90
110/125
125/150
150/175
50
70/80
90/90
110/125
125/150
175/175
50
70/80
90/90
110/125
125/150
175/175
20
40
45
60
70
90
25
40
45
70
70
90
25
40
45
70
70
90
15
40
70
20
40
70
20
40
70
WITH P.E.
DISC. SIZE
FLA
LRA
40
65/68
78/84
99/108
116/128
141/157
42
67/71
81/86
102/111
119/131
144/160
42
67/71
81/86
102/111
119/131
144/160
19
38
42
57
65
77
20
39
43
58
65
78
20
39
43
58
65
78
14
38
61
15
38
62
15
38
62
193
215/218
226/232
245/253
260/270
370/397
230
252/255
263/269
282/290
297/307
407/434
230
252/255
263/269
282/290
297/307
407/434
95
112
115
128
135
195
114
131
134
147
154
214
114
131
134
147
154
214
77
97
118
92
112
133
92
112
133
See Notes page 49.
53
MCA
MOCP
41.5
68.6/72.7
83.2/89.6
106.1/116.1
124.9/137.7
152.0/169.0
43.8
70.9/75.0
85.5/91.9
108.4/118.4
127.2/140.0
154.3/171.3
43.8
70.9/75.0
85.5/91.9
108.4/118.4
127.2/140.0
154.3/171.3
19.7
40.6
44.5
61.5
69.4
82.5
20.5
41.4
45.3
62.3
70.2
83.3
20.5
41.4
45.3
62.3
70.2
83.3
17.3
42.8
68.4
17.7
43.2
68.8
17.7
43.2
68.8
50
70/80
90/90
110/125
125/150
175/175
50
80/80
90/100
110/125
150/150
175/175
50
80/80
90/100
110/125
150/150
175/175
25
45
45
70
70
90
25
45
50
70
80
90
25
45
50
70
80
90
20
45
70
20
45
70
20
45
70
DISC. SIZE
FLA
LRA
44
69/73
82/88
103/113
121/132
146/161
47
72/75
85/91
106/115
123/135
148/164
47
72/75
85/91
106/115
123/135
148/164
21
40
44
59
67
79
22
41
45
60
68
80
22
41
45
60
68
80
19
42
66
19
43
66
19
43
66
197
219/222
230/236
249/257
264/274
374/401
234
256/259
267/273
286/294
301/311
411/438
234
256/259
267/273
286/294
301/311
411/438
97
114
117
130
137
197
116
133
136
149
156
216
116
133
136
149
156
216
81
101
122
96
116
137
96
116
137
548J
NOM. V ---PH ---HZ
UNIT
Table 46 – (cont.) MCA/MOCP DETERMINATION WITHOUT C.O. OR UNPWRD C.O.
NOM. V ---PH ---HZ
UNIT
Table 46 – (cont.) MCA/MOCP DETERMINATION WITHOUT C.O. OR UNPWRD C.O.
ELEC. HTR
IFM
TYPE
548J
208/230---3---60
STD
MED
HIGH
460---3---60
548J*09
STD
MED
HIGH
575---3---60
STD
MED
HIGH
WITHOUT C.O. or UNPWR C.O.
WITHOUT P.E.
Nom
(kW)
--7.8/10.4
12.0/16.0
18.6/24.8
24.0/32.0
31.8/42.4
--7.8/10.4
12.0/16.0
18.6/24.8
24.0/32.0
31.8/42.4
--7.8/10.4
12.0/16.0
18.6/24.8
24.0/32.0
31.8/42.4
--13.9
16.5
27.8
33.0
41.7
--13.9
16.5
27.8
33.0
41.7
--13.9
16.5
27.8
33.0
41.7
--17.0
34.0
--17.0
34.0
--17.0
34.0
FLA
--21.7/25.0
33.4/38.5
51.7/59.7
66.7/77.0
88.4/102.0
--21.7/25.0
33.4/38.5
51.7/59.7
66.7/77.0
88.4/102.0
--21.7/25.0
33.4/38.5
51.7/59.7
66.7/77.0
88.4/102.0
--16.7
19.8
33.4
39.7
50.2
--16.7
19.8
33.4
39.7
50.2
--16.7
19.8
33.4
39.7
50.2
--20.4
40.9
--20.4
40.9
--20.4
40.9
MCA
MOCP
41.9
69.0/73.2
83.7/90.0
106.5/116.5
125.3/138.2
152.4/169.4
44.2
71.3/75.5
86.0/92.3
108.8/118.8
127.6/140.5
154.7/171.7
44.2
71.3/75.5
86.0/92.3
108.8/118.8
127.6/140.5
154.7/171.7
19.2
40.0
43.9
60.9
68.8
81.9
20.0
40.8
44.7
61.7
69.6
82.7
20.0
40.8
44.7
61.7
69.6
82.7
15.4
40.9
66.5
15.8
41.3
66.9
15.8
41.3
66.9
50
70/80
90/100
110/125
150/150
175/175
60
80/80
90/100
110/125
150/150
175/175
60
80/80
90/100
110/125
150/150
175/175
25
45
45
70
70
90
25
45
45
70
70
90
25
45
45
70
70
90
20
45
70
20
45
70
20
45
70
WITH P.E.
DISC. SIZE
FLA
LRA
44
69/72
82/88
103/112
120/132
145/161
46
71/75
85/91
106/115
123/135
148/164
46
71/75
85/91
106/115
123/135
148/164
20
39
43
58
66
78
21
40
44
59
67
79
21
40
44
59
67
79
16
40
63
17
40
64
17
40
64
201
223/226
234/240
253/261
268/278
378/405
238
260/263
271/277
290/298
305/315
415/442
238
260/263
271/277
290/298
305/315
415/442
100
117
120
133
140
200
119
136
139
152
159
219
119
136
139
152
159
219
85
105
126
100
120
141
100
120
141
See Notes page 49.
54
MCA
MOCP
45.7
72.8/77.0
87.5/93.8
110.3/120.3
129.1/142.0
156.2/173.2
48.0
75.1/79.3
89.8/96.1
112.6/122.6
131.4/144.3
158.5/175.5
48.0
75.1/79.3
89.8/96.1
112.6/122.6
131.4/144.3
158.5/175.5
21.0
41.8
45.7
62.7
70.6
83.7
21.8
42.6
46.5
63.5
71.4
84.5
21.8
42.6
46.5
63.5
71.4
84.5
19.2
44.7
70.3
19.6
45.1
70.7
19.6
45.1
70.7
60
80/80
90/100
125/125
150/150
175/175
60
80/80
90/100
125/125
150/150
175/200
60
80/80
90/100
125/125
150/150
175/200
25
45
50
70
80
90
25
45
50
70
80
90
25
45
50
70
80
90
25
45
80
25
50
80
25
50
80
DISC. SIZE
FLA
LRA
48
73/77
86/92
107/117
125/137
150/165
51
76/79
89/95
110/119
127/139
152/168
51
76/79
89/95
110/119
127/139
152/168
22
41
45
60
68
80
23
42
46
61
69
81
23
42
46
61
69
81
20
44
68
21
44
68
21
44
68
205
227/230
238/244
257/265
272/282
382/409
242
264/267
275/281
294/302
309/319
419/446
242
264/267
275/281
294/302
309/319
419/446
102
119
122
135
142
202
121
138
141
154
161
221
121
138
141
154
161
221
89
109
130
104
124
145
104
124
145
ELEC. HTR
IFM
TYPE
208/230---3---60
MCA
MOCP
DISC. SIZE
FLA
LRA
MCA
MOCP
DISC. SIZE
FLA
LRA
35.5
55.4/58.4
64.9/69.4
74.7/80.9
82.9/90.2
94.1/103.2
29.6
41.1/42.9
46.6/49.1
52.2/55.7
57.0/61.2
71.4/77.7
27.4
38.9/40.7
44.4/46.9
50.0/53.5
54.8/59.0
69.2/75.5
27.4
38.9/40.7
44.4/46.9
50.0/53.5
54.8/59.0
69.2/75.5
18.2
27.2
31.5
35.5
39.2
12.8
21.8
26.1
30.1
33.8
12.8
21.8
26.1
30.1
33.8
50
60/60
70/80
80/90
90/100
100/110
40
50/50
50/50
60/60
60/70
80/80
40
45/50
50/50
60/60
60/60
70/80
40
45/50
50/50
60/60
60/60
70/80
25
30
35
40
40
15
25
30
35
35
15
25
30
35
35
36
54/57
63/67
72/77
79/86
90/98
30
41/42
46/48
51/54
55/59
69/75
28
38/40
43/46
49/52
53/57
66/72
28
38/40
43/46
49/52
53/57
66/72
19
27
31
35
38
13
21
25
29
32
13
21
25
29
32
126
142/144
150/153
157/162
164/170
220/234
102
111/113
116/118
120/123
124/127
135/141
114
123/125
128/130
132/135
136/139
147/153
125
134/136
139/141
143/146
147/150
158/164
55
62
66
69
72
56
63
67
70
73
62
69
73
76
79
37.4
57.3/60.3
66.8/71.3
76.6/82.8
84.8/92.1
96.0/105.1
31.5
43.0/44.8
48.5/51.0
54.1/57.6
58.9/63.1
73.3/79.6
29.3
40.8/42.6
46.3/48.8
51.9/55.4
56.7/60.9
71.1/77.4
29.3
40.8/42.6
46.3/48.8
51.9/55.4
56.7/60.9
71.1/77.4
19.2
28.2
32.5
36.5
40.2
13.8
22.8
27.1
31.1
34.8
13.8
22.8
27.1
31.1
34.8
50
60/70
70/80
80/90
90/100
100/110
40
50/50
50/60
60/60
60/70
80/80
40
50/50
50/50
60/60
60/70
80/80
40
50/50
50/50
60/60
60/70
80/80
25
30
35
40
45
20
25
30
35
35
20
25
30
35
35
38
56/59
65/69
74/80
81/88
92/100
32
43/45
48/50
53/56
58/62
71/77
30
40/42
46/48
51/54
55/59
68/74
30
40/42
46/48
51/54
55/59
68/74
20
28
32
36
39
14
22
26
30
33
14
22
26
30
33
128
144/146
152/155
159/164
166/172
222/236
104
113/115
118/120
122/125
126/129
137/143
116
125/127
130/132
134/137
138/141
149/155
127
136/138
141/143
145/148
149/152
160/166
56
63
67
70
73
57
64
68
71
74
63
70
74
77
80
DD--- STD
---
---
7.1
15
7
7
9.5
15
9
9
MED
---
---
5.1
15
5
10
7.5
15
7
12
HIGH
---
---
4.6
15
5
14
7.0
15
7
16
DD--- STD
MED
DD--- STD
460---3---60
FLA
WITH P.E.
--15.9/18.3
23.5/27.1
31.4/36.3
37.9/43.8
46.9/54.2
--9.2/10.6
13.6/15.6
18.1/20.9
21.9/25.3
33.4/38.5
--9.2/10.6
13.6/15.6
18.1/20.9
21.9/25.3
33.4/38.5
--9.2/10.6
13.6/15.6
18.1/20.9
21.9/25.3
33.4/38.5
--7.2
10.6
13.8
16.8
--7.2
10.6
13.8
16.8
--7.2
10.6
13.8
16.8
HIGH
MED
HIGH
575---3---60
WITHOUT P.E.
Nom
(kW)
--3.3/4.4
4.9/6.5
6.5/8.7
7.9/10.5
9.8/13.0
--3.3/4.4
4.9/6.5
6.5/8.7
7.9/10.5
12.0/16.0
--3.3/4.4
4.9/6.5
6.5/8.7
7.9/10.5
12.0/16.0
--3.3/4.4
4.9/6.5
6.5/8.7
7.9/10.5
12.0/16.0
--6.0
8.8
11.5
14.0
--6.0
8.8
11.5
14.0
--6.0
8.8
11.5
14.0
DD--- STD
548J*04
WITH PWRD C.O.
See Notes page 49.
55
548J
208/230---1---60 NOM. V ---PH ---HZ
UNIT
Table 47 – MCA/MOCP DETERMINATION WITH PWRD C.O.
208/230---1---60 NOM. V ---PH ---HZ
UNIT
Table 47– (cont.) MCA/MOCP DETERMINATION WITH PWRD C.O.
ELEC. HTR
IFM
TYPE
208/230---3---60
460---3---60
MCA
MOCP
DISC. SIZE
FLA
LRA
MCA
MOCP
DISC. SIZE
FLA
LRA
41
60.8/63.8
80.2/86.3
99.6/108.7
119.5/131.6
135.7/150.3
30.8
47.8/50.3
53.5/57.0
72.6/79.0
85.6/94.0
28.6
45.6/48.1
51.3/54.8
70.4/76.8
83.4/91.8
28.6
45.6/48.1
51.3/54.8
70.4/76.8
83.4/91.8
18.7
27.7
36.0
39.7
53.3
13.4
22.4
30.6
34.4
48.0
13.4
22.4
30.6
34.4
48.0
60
70/80
90/90
100/110
125/150
150/175
40
50/60
60/60
80/80
90/100
40
50/50
60/60
80/80
90/100
40
50/50
60/60
80/80
90/100
25
30
40
40
60
15
25
35
35
50
15
25
35
35
50
41
59/62
77/83
95/103
113/124
128/141
32
47/49
52/56
70/76
82/90
29
45/47
50/53
67/73
79/87
29
45/47
50/53
67/73
79/87
19
28
35
39
51
14
22
29
33
45
14
22
29
33
45
133
149/151
164/169
227/241
259/278
285/308
99
113/115
117/120
132/138
187/200
111
125/127
129/132
144/150
199/212
122
136/138
140/143
155/161
210/223
53
60
67
70
108
54
61
68
71
109
60
67
74
77
115
42.9
62.7/65.7
82.1/88.2
101.5/110.6
121.4/133.5
137.6/152.2
32.7
49.7/52.2
55.4/58.9
74.5/80.9
87.5/95.9
30.5
47.5/50.0
53.2/56.7
72.3/78.7
85.3/93.7
30.5
47.5/50.0
53.2/56.7
72.3/78.7
85.3/93.7
19.7
28.7
37.0
40.7
54.3
14.4
23.4
31.6
35.4
49.0
14.4
23.4
31.6
35.4
49.0
60
80/80
90/100
110/125
125/150
150/175
45
60/60
60/60
80/90
90/100
40
50/60
60/60
80/80
90/100
40
50/60
60/60
80/80
90/100
25
30
40
45
60
20
25
35
40
50
20
25
35
40
50
43
61/64
79/85
97/105
115/126
130/144
34
49/52
55/58
72/78
84/92
31
47/49
52/55
70/75
82/89
31
47/49
52/55
70/75
82/89
20
29
36
40
52
15
23
31
34
47
15
23
31
34
47
135
151/153
166/171
229/243
261/280
287/310
101
115/117
119/122
134/140
189/202
113
127/129
131/134
146/152
201/214
124
138/140
142/145
157/163
212/225
54
61
68
71
109
55
62
69
72
110
61
68
75
78
116
DD--- STD
---
---
12.3
15
13
45
14.2
20
15
47
MED
---
---
10.7
15
11
48
12.6
15
13
50
HIGH
---
---
10.3
15
10
52
12.2
15
13
54
DD--- STD
MED
DD--- STD
MED
HIGH
575---3---60
FLA
WITH P.E.
--15.9/18.3
31.4/36.3
46.9/54.2
62.8/72.5
75.8/87.5
--13.6/15.6
18.1/20.9
33.4/38.5
43.8/50.5
--13.6/15.6
18.1/20.9
33.4/38.5
43.8/50.5
--13.6/15.6
18.1/20.9
33.4/38.5
43.8/50.5
--7.2
13.8
16.8
27.7
--7.2
13.8
16.8
27.7
--7.2
13.8
16.8
27.7
HIGH
548J*05
WITHOUT P.E.
Nom
(kW)
--3.3/4.4
6.5/8.7
9.8/13.0
13.1/17.4
15.8/21.0
--4.9/6.5
6.5/8.7
12.0/16.0
15.8/21.0
--4.9/6.5
6.5/8.7
12.0/16.0
15.8/21.0
--4.9/6.5
6.5/8.7
12.0/16.0
15.8/21.0
--6.0
11.5
14.0
23.0
--6.0
11.5
14.0
23.0
--6.0
11.5
14.0
23.0
DD--- STD
548J
WITH PWRD C.O.
See Notes page 49.
56
ELEC. HTR
IFM
TYPE
208/230---3---60
FLA
MCA
MOCP
WITH P.E.
DISC. SIZE
FLA
LRA
MCA
MOCP
DISC. SIZE
FLA
LRA
--23.5/27.1
31.4/36.3
46.9/54.2
62.8/72.5
75.8/87.5
--13.6/15.6
21.9/25.3
33.4/38.5
43.8/50.5
55.2/63.8
--13.6/15.6
21.9/25.3
33.4/38.5
43.8/50.5
55.2/63.8
--13.6/15.6
21.9/25.3
33.4/38.5
43.8/50.5
55.2/63.8
--7.2
13.8
16.8
27.7
30.7
--7.2
13.8
16.8
27.7
30.7
--7.2
13.8
16.8
27.7
30.7
46.5
75.8/80.3
85.7/91.8
105.1/114.2
125.0/137.1
141.2/155.8
33.2
50.2/52.7
60.6/64.8
75.0/81.3
88.0/96.3
102.2/113.0
31
48.0/50.5
58.4/62.6
72.8/79.1
85.8/94.1
100.0/110.8
33.3
50.3/52.8
60.7/64.9
75.1/81.4
88.1/96.4
102.3/113.1
20.2
29.2
37.5
41.2
54.9
58.6
15.2
24.2
32.5
36.2
49.9
53.6
16
25.0
33.3
37.0
50.7
54.4
60
80/90
100/100
110/125
125/150
150/175
45
60/60
70/70
80/90
90/100
110/125
45
60/60
60/70
80/80
90/100
100/125
45
60/60
70/70
80/90
90/100
110/125
25
30
40
45
60
60
20
30
35
40
50
60
20
30
35
40
60
60
46
73/77
82/88
100/108
118/129
133/147
34
49/52
59/63
72/78
84/92
97/107
31
47/49
56/60
70/75
82/89
95/105
34
49/52
59/63
72/78
84/92
97/107
21
29
37
40
53
56
15
24
31
35
47
51
16
24
32
36
48
52
150
174/177
181/186
244/258
276/295
302/325
126
140/142
148/151
159/165
214/227
236/254
149
163/165
171/174
182/188
237/250
259/277
175
189/191
197/200
208/214
263/276
285/303
64
71
78
81
119
125
71
78
85
88
126
132
84
91
98
101
139
145
48.4
77.7/82.2
87.6/93.7
107.0/116.1
126.9/139.0
143.1/157.7
35.1
52.1/54.6
62.5/66.7
76.9/83.2
89.9/98.2
104.1/114.9
32.9
49.9/52.4
60.3/64.5
74.7/81.0
87.7/96.0
101.9/112.7
35.2
52.2/54.7
62.6/66.8
77.0/83.3
90.0/98.3
104.2/115.0
21.2
30.2
38.5
42.2
55.9
59.6
16.2
25.2
33.5
37.2
50.9
54.6
17.0
26.0
34.3
38.0
51.7
55.4
60
80/100
100/100
110/125
150/150
150/175
50
60/60
70/70
80/90
90/100
110/125
45
60/60
70/70
80/90
90/100
110/125
50
60/60
70/70
80/90
90/100
110/125
25
35
40
45
60
60
20
30
35
40
60
60
20
30
35
40
60
60
48
75/79
84/90
102/110
120/131
135/149
36
52/54
61/65
74/80
86/94
99/109
33
49/51
59/62
72/78
84/91
97/107
36
52/54
61/65
74/80
86/94
99/109
22
30
38
42
54
58
16
25
32
36
48
52
17
26
33
37
49
53
152
176/179
183/188
246/260
278/297
304/327
128
142/144
150/153
161/167
216/229
238/256
151
165/167
173/176
184/190
239/252
261/279
177
191/193
199/202
210/216
265/278
287/305
65
72
79
82
120
126
72
79
86
89
127
133
85
92
99
102
140
146
DD--- STD
---
---
13.6
15
14
47
15.5
20
16
49
MED
---
---
11.6
15
12
54
13.5
15
14
56
HIGH
---
---
12.4
15
13
65
14.3
20
15
67
DD--- STD
MED
548J*06
HIGH
DD--- STD
460---3---60
WITHOUT P.E.
Nom
(kW)
--4.9/6.5
6.5/8.7
9.8/13.0
13.1/17.4
15.8/21.0
--4.9/6.5
7.9/10.5
12.0/16.0
15.8/21.0
19.9/26.5
--4.9/6.5
7.9/10.5
12.0/16.0
15.8/21.0
19.9/26.5
--4.9/6.5
7.9/10.5
12.0/16.0
15.8/21.0
19.9/26.5
--6.0
11.5
14.0
23.0
25.5
--6.0
11.5
14.0
23.0
25.5
--6.0
11.5
14.0
23.0
25.5
DD--- STD
MED
HIGH
575---3---60
WITH PWRD C.O.
See Notes page 49.
57
548J
208/230---1---60 NOM. V ---PH ---HZ
UNIT
Table 47 – (cont.) MCA/MOCP DETERMINATION WITH PWRD C.O.
NOM. V ---PH ---HZ
UNIT
Table 47 – (cont.) MCA/MOCP DETERMINATION WITH PWRD C.O.
ELECTRIC HEATER
IFM
TYPE
548J
208/230---3---60
STD
MED
548J*07
HIGH
460---3---60
STD
MED
575---3---60
HIGH
WITH PWRD C.O.
WITHOUT P.E.
Nom
(kW)
FLA
MCA
MOCP
WITH P.E.
DISC. SIZE
FLA
LRA
MCA
MOCP
DISC. SIZE
FLA
LRA
--4.9/6.5
7.9/10.5
12.0/16.0
15.8/21.0
19.9/26.5
--4.9/6.5
7.9/10.5
12.0/16.0
15.8/21.0
19.9/26.5
--4.9/6.5
7.9/10.5
12.0/16.0
15.8/21.0
19.9/26.5
--6.0
11.5
14.0
23.0
25.5
--6.0
11.5
14.0
23.0
25.5
--6.0
11.5
14.0
23.0
25.5
--13.6/15.6
21.9/25.3
33.4/38.5
43.8/50.5
55.2/63.8
--13.6/15.6
21.9/25.3
33.4/38.5
43.8/50.5
55.2/63.8
--13.6/15.6
21.9/25.3
33.4/38.5
43.8/50.5
55.2/63.8
--7.2
13.8
16.8
27.7
30.7
--7.2
13.8
16.8
27.7
30.7
--7.2
13.8
16.8
27.7
30.7
35.3
52.3/54.8
62.6/66.9
77.0/83.4
90.0/98.4
104.3/115.0
37.6
54.6/57.1
64.9/69.2
79.3/85.7
92.3/100.7
106.6/117.3
37.6
54.6/57.1
64.9/69.2
79.3/85.7
92.3/100.7
106.6/117.3
17.7
26.7
35.0
38.7
52.4
56.1
18.5
27.5
35.8
39.5
53.2
56.9
18.5
27.5
35.8
39.5
53.2
56.9
50
60/60
70/70
80/90
90/100
110/125
50
60/60
70/80
80/90
100/110
110/125
50
60/60
70/80
80/90
100/110
110/125
25
30
40
40
60
60
25
30
40
45
60
60
25
30
40
45
60
60
35
51/53
60/64
73/79
85/93
99/108
38
53/56
63/67
76/82
88/96
101/111
38
53/56
63/67
76/82
88/96
101/111
18
26
33
37
49
53
19
27
34
38
50
54
19
27
34
38
50
54
151
165/167
173/176
184/190
239/252
261/279
188
202/204
210/213
221/227
276/289
298/316
188
202/204
210/213
221/227
276/289
298/316
75
82
89
92
130
136
94
101
108
111
149
155
94
101
108
111
149
155
37.2
54.2/56.7
64.5/68.8
78.9/85.3
91.9/100.3
106.2/116.9
39.5
56.5/59.0
66.8/71.1
81.2/87.6
94.2/102.6
108.5/119.2
39.5
56.5/59.0
66.8/71.1
81.2/87.6
94.2/102.6
108.5/119.2
18.7
27.7
36.0
39.7
53.4
57.1
19.5
28.5
36.8
40.5
54.2
57.9
19.5
28.5
36.8
40.5
54.2
57.9
50
60/60
70/80
80/90
100/110
110/125
50
60/60
80/80
90/90
100/110
110/125
50
60/60
80/80
90/90
100/110
110/125
25
30
40
45
60
60
25
30
40
45
60
60
25
30
40
45
60
60
37
53/55
62/66
76/82
88/95
101/111
40
56/58
65/69
78/84
90/98
103/113
40
56/58
65/69
78/84
90/98
103/113
19
27
35
38
51
54
20
28
36
39
52
55
20
28
36
39
52
55
153
167/169
175/178
186/192
241/254
263/281
190
204/206
212/215
223/229
278/291
300/318
190
204/206
212/215
223/229
278/291
300/318
76
83
90
93
131
137
95
102
109
112
150
156
95
102
109
112
150
156
STD
---
---
14.0
20
14
61
15.9
20
16
63
MED
---
---
14.4
20
14
76
16.3
20
17
78
HIGH
---
---
14.4
20
14
76
16.3
20
17
78
See Notes page 49.
58
ELECTRIC HEATER
IFM
TYPE
208/230---3---60
STD
MED
HIGH
460---3---60
548J*08
STD
MED
HIGH
575---3---60
STD
MED
HIGH
WITH PWRD C.O.
WITHOUT P.E.
Nom
(kW)
--7.8/10.4
12.0/16.0
18.6/24.8
24.0/32.0
31.8/42.4
--7.8/10.4
12.0/16.0
18.6/24.8
24.0/32.0
31.8/42.4
--7.8/10.4
12.0/16.0
18.6/24.8
24.0/32.0
31.8/42.4
--13.9
16.5
27.8
33.0
41.7
--13.9
16.5
27.8
33.0
41.7
--13.9
16.5
27.8
33.0
41.7
--17.0
34.0
--17.0
34.0
--17.0
34.0
FLA
--21.7/25.0
33.4/38.5
51.7/59.7
66.7/77.0
88.4/102.0
--21.7/25.0
33.4/38.5
51.7/59.7
66.7/77.0
88.4/102.0
--21.7/25.0
33.4/38.5
51.7/59.7
66.7/77.0
88.4/102.0
--16.7
19.8
33.4
39.7
50.2
--16.7
19.8
33.4
39.7
50.2
--16.7
19.8
33.4
39.7
50.2
--20.4
40.9
--20.4
40.9
--20.4
40.9
MCA
MOCP
42.5
69.6/73.7
84.2/90.6
107.1/117.1
125.9/138.7
153.0/170.0
44.8
71.9/76.0
86.5/92.9
109.4/119.4
128.2/141.0
155.3/172.3
44.8
71.9/76.0
86.5/92.9
109.4/119.4
128.2/141.0
155.3/172.3
20.1
41.0
44.9
61.9
69.8
82.9
20.9
41.8
45.7
62.7
70.6
83.7
20.9
41.8
45.7
62.7
70.6
83.7
15.2
40.7
66.3
15.6
41.1
66.7
15.6
41.1
66.7
50
70/80
90/100
110/125
150/150
175/175
50
80/80
90/100
110/125
150/150
175/175
50
80/80
90/100
110/125
150/150
175/175
25
45
45
70
70
90
25
45
50
70
80
90
25
45
50
70
80
90
20
45
70
20
45
70
20
45
70
WITH P.E.
DISC. SIZE
FLA
LRA
45
70/74
83/89
105/114
122/134
147/162
48
73/76
86/92
107/116
124/136
149/165
48
73/76
86/92
107/116
124/136
149/165
21
41
44
60
67
79
22
42
45
61
68
80
22
42
45
61
68
80
16
40
63
17
40
64
17
40
64
198
220/223
231/237
250/258
265/275
375/402
235
257/260
268/274
287/295
302/312
412/439
235
257/260
268/274
287/295
302/312
412/439
97
114
117
130
137
197
116
133
136
149
156
216
116
133
136
149
156
216
79
99
120
94
114
135
94
114
135
See Notes page 49.
59
MCA
MOCP
46.3
73.4/77.5
88.0/94.4
110.9/120.9
129.7/142.5
156.8/173.8
48.6
75.7/79.8
90.3/96.7
113.2/123.2
132.0/144.8
159.1/176.1
48.6
75.7/79.8
90.3/96.7
113.2/123.2
132.0/144.8
159.1/176.1
21.9
42.8
46.7
63.7
71.6
84.7
22.7
43.6
47.5
64.5
72.4
85.5
22.7
43.6
47.5
64.5
72.4
85.5
19.0
44.5
70.1
19.4
44.9
70.5
19.4
44.9
70.5
50
80/80
90/100
125/125
150/150
175/175
60
80/80
100/100
125/125
150/150
175/200
60
80/80
100/100
125/125
150/150
175/200
25
45
50
70
80
90
25
45
50
70
80
90
25
45
50
70
80
90
25
45
80
25
45
80
25
45
80
DISC. SIZE
FLA
LRA
49
74/78
88/94
109/118
126/138
151/167
52
77/81
91/96
112/121
129/141
154/169
52
77/81
91/96
112/121
129/141
154/169
23
43
46
62
69
81
24
44
47
63
70
82
24
44
47
63
70
82
21
44
68
21
45
68
21
45
68
202
224/227
235/241
254/262
269/279
379/406
239
261/264
272/278
291/299
306/316
416/443
239
261/264
272/278
291/299
306/316
416/443
99
116
119
132
139
199
118
135
138
151
158
218
118
135
138
151
158
218
83
103
124
98
118
139
98
118
139
548J
NOM. V ---PH ---HZ
UNIT
Table 47 – (cont.) MCA/MOCP DETERMINATION WITH PWRD C.O.
NOM. V ---PH ---HZ
UNIT
Table 47 – (cont.) MCA/MOCP DETERMINATION WITH PWRD C.O.
ELECTRIC HEATER
IFM
TYPE
548J
208/230---3---60
STD
MED
HIGH
460---3---60
548J*09
STD
MED
HIGH
575---3---60
STD
MED
HIGH
WITH PWRD C.O.
WITHOUT P.E.
Nom
(kW)
--7.8/10.4
12.0/16.0
18.6/24.8
24.0/32.0
31.8/42.4
--7.8/10.4
12.0/16.0
18.6/24.8
24.0/32.0
31.8/42.4
--7.8/10.4
12.0/16.0
18.6/24.8
24.0/32.0
31.8/42.4
--13.9
16.5
27.8
33.0
41.7
--13.9
16.5
27.8
33.0
41.7
--13.9
16.5
27.8
33.0
41.7
--17.0
34.0
--17.0
34.0
--17.0
34.0
FLA
--21.7/25.0
33.4/38.5
51.7/59.7
66.7/77.0
88.4/102.0
--21.7/25.0
33.4/38.5
51.7/59.7
66.7/77.0
88.4/102.0
--21.7/25.0
33.4/38.5
51.7/59.7
66.7/77.0
88.4/102.0
--16.7
19.8
33.4
39.7
50.2
--16.7
19.8
33.4
39.7
50.2
--16.7
19.8
33.4
39.7
50.2
--20.4
40.9
--20.4
40.9
--20.4
40.9
MCA
MOCP
46.7
73.8/78.0
88.5/94.8
111.3/121.3
130.1/143.0
157.2/174.2
49.0
76.1/80.3
90.8/97.1
113.6/123.6
132.4/145.3
159.5/176.5
49.0
76.1/80.3
90.8/97.1
113.6/123.6
132.4/145.3
159.5/176.5
21.4
42.2
46.1
63.1
71.0
84.1
22.2
43.0
46.9
63.9
71.8
84.9
22.2
43.0
46.9
63.9
71.8
84.9
17.1
42.6
68.2
17.5
43.0
68.6
17.5
43.0
68.6
60
80/80
90/100
125/125
150/150
175/175
60
80/90
100/100
125/125
150/150
175/200
60
80/90
100/100
125/125
150/150
175/200
25
45
50
70
80
90
25
45
50
70
80
90
25
45
50
70
80
90
20
45
70
20
45
70
20
45
70
WITH P.E.
DISC. SIZE
FLA
LRA
49
74/78
88/93
109/118
126/138
151/166
52
77/81
90/96
111/120
128/140
153/169
52
77/81
90/96
111/120
128/140
153/169
23
42
45
61
68
80
23
43
46
62
69
81
23
43
46
62
69
81
18
42
65
19
42
66
19
42
66
206
228/231
239/245
258/266
273/283
383/410
243
265/268
276/282
295/303
310/320
420/447
243
265/268
276/282
295/303
310/320
420/447
102
119
122
135
142
202
121
138
141
154
161
221
121
138
141
154
161
221
87
107
128
102
122
143
102
122
143
See Notes page 49.
60
MCA
MOCP
50.5
77.6/81.8
92.3/98.6
115.1/125.1
133.9/146.8
161.0/178.0
52.8
79.9/84.1
94.6/100.9
117.4/127.4
136.2/149.1
163.3/180.3
52.8
79.9/84.1
94.6/100.9
117.4/127.4
136.2/149.1
163.3/180.3
23.2
44.0
47.9
64.9
72.8
85.9
24.0
44.8
48.7
65.7
73.6
86.7
24.0
44.8
48.7
65.7
73.6
86.7
20.9
46.4
72.0
21.3
46.8
72.4
21.3
46.8
72.4
60
80/90
100/100
125/150
150/150
175/200
60
80/90
100/110
125/150
150/150
175/200
60
80/90
100/110
125/150
150/150
175/200
30
45
50
70
80
90
30
45
50
70
80
90
30
45
50
70
80
90
25
50
80
25
50
80
25
50
80
DISC. SIZE
FLA
LRA
53
78/82
92/98
113/122
130/142
155/171
56
81/85
95/100
116/125
133/145
158/173
56
81/85
95/100
116/125
133/145
158/173
25
44
47
63
70
82
26
45
48
64
71
83
26
45
48
64
71
83
22
46
69
23
46
70
23
46
70
210
232/235
243/249
262/270
277/287
387/414
247
269/272
280/286
299/307
314/324
424/451
247
269/272
280/286
299/307
314/324
424/451
104
121
124
137
144
204
123
140
143
156
163
223
123
140
143
156
163
223
91
111
132
106
126
147
106
126
147
548J
TYPICAL WIRING DIAGRAMS
C09063
Fig. 17 -- 1--Stage Cooling Typical Power Diagram
61
548J
C09065
Fig. 18 -- 2--Stage Cooling Typical Power Diagram
62
548J
C09067
Fig. 19 -- Multi--Protocol Option Diagram
63
64
Fig. 20 -- 1--Stage Typical Wiring Diagram
548J
C09062
65
Fig. 21 -- 2--Stage Typical Wiring Diagram
548J
C09064
SEQUENCE OF OPERATION
Cooling, unit without economizer
When thermostat calls for cooling, terminals G and Y1 are
energized. The indoor-fan contactor (IFC), reversing valve
solenoid (RVS) and compressor contactor are energized
and indoor-fan motor, compressor, and outdoor fan starts.
The outdoor fan motor runs continuously while unit is
cooling.
548J
Heating, unit without economizer
Upon a request for heating from the space thermostat,
terminal W1 will be energized with 24V. The IFC,
outdoor-fan contactor (OFC), C1, and C2 will be
energized. The indoor fan, outdoor fans, and compressor
no. 1, and compressor no. 2 are energized and reversing
valves are deenergized and switch position.
If the space temperature continues to fall while W1 is
energized, W2 will be energized with 24V, and the heater
contactor(s) (HC) will be energized, which will energize
the electric heater(s).
When the space thermostat is satisfied, W2 will be
deenergized first, and the electric heater(s) will be
deenergized.
Upon a further rise in space temperature, W1 will be
deenergized.
Cooling, unit with EconoMi$er IV
When free cooling is not available, the compressors will
be controlled by the zone thermostat. When free cooling is
available, the outdoor-air damper is modulated by the
EconoMi$er IV control to provide a 50 to 55_F (10_ to
13_C) mixed-air temperature into the zone. As the
mixed-air temperature fluctuates above 55 or below 50_F
(13_ to 10_C), the dampers will be modulated (open or
close) to bring the mixed-air temperature back within
control.
If mechanical cooling is utilized with free cooling, the
outdoor-air damper will maintain its current position at
the time the compressor is started. If the increase in
cooling capacity causes the mixed-air temperature to drop
below 45_F (7_C), then the outdoor-air damper position
will be decreased to the minimum position. If the
mixed-air temperature continues to fall, the outdoor-air
damper will close. Control returns to normal once the
mixed-air temperature rises above 48_F (9_C).
If optional power exhaust is installed, as the outdoor-air
damper opens and closes, the power exhaust fans will be
energized and deenergized.
If field-installed accessory CO2 sensors are connected to
the EconoMi$er IV control, a demand controlled
ventilation strategy will begin to operate. As the CO2
level in the zone increases above the CO2 setpoint, the
minimum position of the damper will be increased
proportionally. As the CO2 level decreases because of the
increase in fresh air, the outdoor-air damper will be
proportionally closed.
For EconoMi$er IV operation, there must be a thermostat
call for the fan (G). If the unit is occupied and the fan is
on, the damper will operate at minimum position.
Otherwise, the damper will be closed.
When the EconoMi$er IV control is in the occupied mode
and a call for cooling exists (Y1 on the thermostat), the
control will first check for indoor fan operation. If the fan
is not on, then cooling will not be activated. If the fan is
on, then the control will open the EconoMi$er IV damper
to the minimum position.
On the initial power to the EconoMi$er IV control, it will
take the damper up to 21/2 minutes before it begins to
position itself. Any change in damper position will take
up to 30 seconds to initiate. Damper movement from full
closed to full open (or vice versa) will take between 11/2
and 21/2 minutes.
If free cooling can be used as determined from the
appropriate changeover command (switch, dry bulb,
enthalpy curve, differential dry bulb, or differential
enthalpy), then the control will modulate the dampers
open to maintain the mixed-air temperature setpoint at
50_ to 55_F (10_ to 13_C).
If there is a further demand for cooling (cooling second
stage — Y2 is energized), then the control will bring on
compressor stage 1 to maintain the mixed-air temperature
setpoint. The EconoMi$er IV damper will be open at
maximum position. EconoMi$er IV operation is limited to
a single compressor.
Heating, unit with EconoMi$er
When the room temperature calls for heat through
terminal W1, the indoor (evaporator) fan contactor (IFC)
and heater contactor no. 1 (HC1) are energized and the
reversing valve(s) deenergize and switches position. On
units equipped for 2 stages of heat, when additional heat is
needed, heater contactor no. 2 is energized through W2.
The economizer damper moves to the minimum position.
When the thermostat is satisfied, the damper moves to the
fully closed position.
Defrost
When the temperature of the outdoor coil drops below
28_F (-- 2_C) as sensed by the defrost thermostat (DFT2)
and the defrost timer is at the end of a timed period
(adjustable at 30, 60, 90 or 120 minutes), reversing valve
solenoids (RVS1 and RVS2) are energized and the OFC is
deenergized. This switches the position of the reversing
valves and shuts off the outdoor fan. The electric heaters
(if installed) will be energized.
The unit continues to defrost until the coil temperature as
measured by DFT2 reaches 65_F (18_C), or the duration
of defrost cycle completes a 10-minute period.
During the Defrost mode, if circuit 1 defrosts first, RVS1
will oscillate between Heating and Cooling modes until
the Defrost mode is complete.
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If the space thermostat is satisfied during a defrost cycle,
the unit will continue in the Defrost mode until the time or
temperature constraints are satisfied.
Automatic changeover
When the system selection switch is set at AUTO.
position, unit automatically changes from heating
operation to cooling operation when the temperature of
the conditioned space rises to the cooling level setting.
When the temperature of the conditioned space falls to the
heating level setting, unit automatically changes from
cooling to heating operation (with a 3°F deadband in
between).
Continuous air circulation
Turn unit power on. Set system control at OFF position.
Set fan switch at ON position. The indoor-fan contactor is
energized through the thermostat switch and the indoor
fan runs continuously.
Cycle-LOC™ protection
If unit operation is interrupted by an open high-pressure
switch, low-pressure switch, indoor coil freeze stat, or by
compressor internal line-break device (overcurrent or
overtemperature), and compressor is calling for either
cooling or heating, Cycle-LOC protection device
simultaneously locks out unit and lights a warning light on
the thermostat. Restart the unit by manually turning
thermostat to OFF and then to ON position. If any of the
protective devices opens again, the unit continues to lock
out until corrective action is taken.
NOTE: If the unit fails to operate due to compressor
over-current condition, restart by manually resetting
circuit breakers at the unit. Restart cannot be
accomplished at the room thermostat.
Emergency heat
If compressor is inoperative due to a tripped safety device
(high or low pressure, indoor coil freeze stat, overcurrent,
or overtemperature), the Cycle-LOC device locks out the
compressor and lights a warning light on the room
thermostat. When the switch is on (thermostat is set to the
EM HT position), compressor circuit and outdoor
thermostats are bypassed, and the second stage of
thermostat energizes the indoor blower and the electric
resistance heaters.
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At the end of the defrost cycle, the electric heaters (if
installed) will be deenergized; the reversing valves switch
and the outdoor-fan motor will be energized. The unit will
now operate in the Heating mode.
GUIDE SPECIFICATIONS -- 548J*04--09
Note about this specification:
Bryant created this specification in “Masterformat” as published by the Construction Specification Institute. Please feel
free to copy this specification directly into your building specifications.
Rooftop Packaged Heat Pump
HVAC Guide Specifications
548J
Size Range:
3 to 8.5 Nominal Tons
This product has been designed and manufactured to
meet Energy Star® criteria for energy efficiency.
However, proper refrigerant charge and proper air flow
are critical to achieve rated capacity and efficiency.
Installation of this product should follow all
manufacturer’s refrigerant charging and air flow
instructions. Failure to confirm proper charge and
air flow may reduce energy efficiency and shorten
equipment life.
Section
Description
23 06 80
Schedules for Decentralized HVAC Equipment
23 06 80.13
Decentralized Unitary HVAC Equipment Schedule
23 06 80.13.A. Rooftop unit schedule
1. Schedule is per the project specification requirements.
23 07 16
HVAC Equipment Insulation
23 07 16.13
Decentralized, Rooftop Units:
23 07 16.13.A. Evaporator fan compartment:
1. Interior cabinet surfaces shall be insulated with a minimum 1/2-- in. thick, minimum 1 1/2 lb density, flexible
fiberglass insulation bonded with a phenolic binder, neoprene coated on the air side.
2. Insulation and adhesive shall meet NFPA 90A requirements for flame spread and smoke generation.
23 07 16.13.B. Electric heat compartment:
1. Aluminum foil-- faced fiberglass insulation shall be used.
2. Insulation and adhesive shall meet NFPA 90A requirements for flame spread and smoke generation.
23 09 13
Instrumentation and Control Devices for HVAC
23 09 13.23
Sensors and Transmitters
23 09 13.23.A. Thermostats
1. Thermostat must
a. have capability to energize 2 different stages of cooling, and 2 different stages of heating.
b. include capability for occupancy scheduling.
23 09 23
Direct-- digital Control system for HVAC
23 09 23.13
Decentralized, Rooftop Units:
23 09 23.13.A. N/A
23 09 23.13.B. Multi-- protocol, direct digital controller:
1. Shall be ASHRAE 62-- 2001 compliant.
2. Shall accept 18-- 30VAC, 50-- 60Hz, and consumer 15VA or less power.
3. Shall have an operating temperature range from - 40_F (-- 40_C) to 130_F (54_C), 10% - 90% RH (non-- condensing).
4. Shall include built-- in protocol for BACNET (MS/TP and PTP modes), Modbus (RTU and ASCII), Johnson N2
and LonWorks. LonWorks Echelon processor required for all Lon applications shall be contained in separate communication board.
5. Shall allow access of up to 62 network variables (SNVT). Shall be compatible with all open controllers
6. Baud rate Controller shall be selectable using a dipswitch.
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23 09 33
Electric and Electronic Control System for HVAC
23 09 33.13
Decentralized, Rooftop Units:
23 09 33.13.A. General:
1. Shall be complete with self-- contained low-- voltage control circuit protected by a resettable circuit breaker on the
24-- v transformer side. Transformer shall have 75VA capability.
2. Shall utilize color-- coded wiring.
3. Shall include a central control terminal board to conveniently and safely provide connection points for vital control functions such as: smoke detectors, phase monitor, economizer, thermostat, DDC control options, loss of
charge, freeze switch, high pressure switches.
4. Unit shall include a minimum of one 8-- pin screw terminal connection board for connection of control wiring.
5. Shall include integrated defrost system to prevent excessive frost accumulation during heating duty, and shall be
controlled as follows:
a. Defrost shall be initiated on the basis of time and coil temperature.
b. A 30,60,90,120 minute timer shall activate the defrost cycle only if the coil temperature is low enough to indicate a heavy frost condition.
c. Defrost cycle shall terminate when defrost thermostat are satisfied and shall have a positive termination time of
10 minutes.
6. Defrost system shall also include:
a. Defrost Cycle Indicator LED.
b. Dip switch selectable defrost time between 30,60,90 and 120 minutes. Factory set at 30 minutes.
c. Molded plug connection to insure proper connection.
23 09 33.23.B. Safeties:
1. Compressor over-- temperature, over current.
2. Loss of charge switch.
a. Units with 2 compressors shall have different sized connectors for the circuit 1 and circuit 2 low and high pressure switches. They shall physically prevent the cross-- wiring of the safety switches between circuits 1 and 2.
b. Loss of charge switch shall use different color wire than the high pressure switch. The purpose is to assist the
installer and service technician to correctly wire and or troubleshoot the rooftop unit.
3. High-- pressure switch.
a. Units with 2 compressors shall have different sized connectors for the circuit 1 and circuit 2 low and high pressure switches. They shall physically prevent the cross-- wiring of the safety switches between circuits 1 and 2.
b. High pressure switch shall use different color wire than the low pressure switch. The purpose is to assist the
installer and service technician to correctly wire and or troubleshoot the rooftop unit.
4. Freeze protection thermostat, evaporator coil.
5. Automatic reset, motor thermal overload protector.
23 09 93
Sequence of Operations for HVAC Controls
23 09 93.13
23 09 93.13
Decentralized, Rooftop Units:
INSERT SEQUENCE OF OPERATION
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7. Shall have an LED display independently showing the status of serial communication, running, errors, power, all
digital outputs, and all analog inputs.
8. Shall accept the following inputs: space temperature, setpoint adjustment, outdoor air temperature, indoor air quality, outdoor air quality, compressor lock-- out, fire shutdown, enthalpy switch, and fan status/filter status/humidity/remote occupancy.
9. Shall provide the following outputs: economizer, fan, cooling stage 1, cooling stage 2, heat stage 1, heat stage 2,
heat stage 3/ exhaust/ reversing valve.
10. Shall have built-- in surge protection circuitry through solid state polyswitches. Polyswitches shall be used on incoming power and network connections. Polyswitches will return to normal when the “trip” condition clears.
11. Shall have a battery back-- up capable of a minimum of 10,000 hours of data and time clock retention during power
outages.
12. Shall have built-- in support for Bryant technician tool.
13. Shall include an EIA-- 485 protocol communication port, an access port for connection of either a computer or a
Bryant technician tool, an EIA-- 485 port for network communication to intelligent space sensors and displays, and
a port to connect an optional LonWorks communications card.
14. Software upgrades will be accomplished by either local or remote download. No software upgrades through chip
replacements are allowed.
23 40 13
Panel Air Filters
23 40 13.13
Decentralized, Rooftop Units:
23 40 13.13.A. Standard filter section
1. Shall consist of factory-- installed, low velocity, throwaway 2-- in. thick fiberglass filters of commercially available
sizes.
2. Unit shall use only one filter size. Multiple sizes are not acceptable.
3. Filters shall be accessible through an access panel with “no-- tool” removal as described in the unit cabinet section
of this specification (23 81 19.13.H).
548J
23 81 19
Self-- Contained Air Conditioners
23 81 19.13
Small-- Capacity Self-- Contained Air Conditioners (548J*04-- 09)
23 81 19.13.A. General
1. Outdoor, rooftop mounted, electrically controlled, heating and cooling unit utilizing a(n) hermetic scroll compressor(s) for cooling duty and heat pump for heating duty.
2. Factory assembled, single-- piece heating and cooling rooftop unit. Contained within the unit enclosure shall be all
factory wiring, piping, controls, and special features required prior to field start-- up.
3. Unit shall use environmentally safe, Puron refrigerant.
4. Unit shall be installed in accordance with the manufacturer’s instructions.
5. Unit must be selected and installed in compliance with local, state, and federal codes.
23 81 19.13.B. Quality Assurance
1. Unit meets ASHRAE 90.1-- 2004 minimum efficiency requirements.
2. 3-- phase units are Energy Star qualified.
3. Unit shall be rated in accordance with AHRI Standards 210/240 and 340/360.
4. Unit shall be designed to conform to ASHRAE 15, 2001.
5. Unit shall be UL-- tested and certified in accordance with ANSI Z21.47 Standards and UL-- listed and certified
under Canadian standards as a total package for safety requirements.
6. Insulation and adhesive shall meet NFPA 90A requirements for flame spread and smoke generation.
7. Unit casing shall be capable of withstanding 500-- hour salt spray exposure per ASTM B117 (scribed specimen).
8. Unit casing shall be capable of withstanding Federal Test Method Standard No. 141 (Method 6061) 5000-- hour salt
spray.
9. Unit shall be designed in accordance with ISO 9001:2000, and shall be manufactured in a facility registered by
ISO 9001:2000.
10. Roof curb shall be designed to conform to NRCA Standards.
11. Unit shall be subjected to a completely automated run test on the assembly line. The data for each unit will be
stored at the factory, and must be available upon request.
12. Unit shall be designed in accordance with UL Standard 1995, including tested to withstand rain.
13. Unit shall be constructed to prevent intrusion of snow and tested to prevent snow intrusion into the control box up
to 40 mph.
14. Unit shake tested to assurance level 1, ASTM D4169 to ensure shipping reliability.
23 81 19.13.C. Delivery, Storage, and Handling
1. Unit shall be stored and handled per manufacturer’s recommendations.
2. Lifted by crane requires either shipping top panel or spreader bars.
3. Unit shall only be stored or positioned in the upright position.
23 81 19.13.D. Project Conditions
1. As specified in the contract.
23 81 19.13.E. Project Conditions
1. As specified in the contract.
23 81 19.13.F. Operating Characteristics
1. Unit shall be capable of starting and running at 115_F (46_C) ambient outdoor temperature, meeting maximum
load criteria of AHRI Standard 210/240 or 340/360 at ± 10% voltage.
2. Compressor with standard controls shall be capable of operation from 25_F (-- 4_C), ambient outdoor temperatures. Accessory winter start kit is necessary if mechanically cooling at ambient temperatures below 25_F (-- 4_C).
3. Unit shall be capable of simultaneous heating duty and defrost cycle operation when using accessory electric
heaters.
4. Unit shall discharge supply air vertically or horizontally as shown on contract drawings.
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5. Unit shall be factory configured for vertical supply & return configurations.
6. Unit shall be field convertible from vertical to horizontal configuration
7. Unit shall be capable of mixed operation: vertical supply with horizontal return or horizontal supply with vertical
return.
23 81 19.13.G. Electrical Requirements
1. Main power supply voltage, phase, and frequency must match those required by the manufacturer.
23 81 19.13.H. Unit Cabinet
1. Unit cabinet shall be constructed of galvanized steel, and shall be bonderized and coated with a pre-- painted baked
enamel finish on all externally exposed surfaces.
2. Unit cabinet exterior paint shall be: film thickness, (dry) 0.003 inches minimum, gloss (per ASTM D523, 60_F):
60, Hardness: H-- 2H Pencil hardness.
3. Evaporator fan compartment interior cabinet insulation shall conform to AHRI Standards 210/240 or 340/360
minimum exterior sweat criteria. Interior surfaces shall be insulated with a minimum 1/2-- in. thick, 1 lb density,
flexible fiberglass insulation, neoprene coated on the air side. Aluminum foil-- faced fiberglass insulation shall be
used in the heat compartment.
4. Base of unit shall have a minimum of three locations for thru-- the-- base electrical connections (factory installed or
field installed), standard.
5. Base Rail
a. Unit shall have base rails on a minimum of 2 sides.
b. Holes shall be provided in the base rails for rigging shackles to facilitate maneuvering and overhead rigging.
c. Holes shall be provided in the base rail for moving the rooftop by fork truck.
d. Base rail shall be a minimum of 16 gauge thickness.
6. Condensate pan and connections:
a. Shall be a sloped condensate drain pan made of a non-- corrosive material.
b. Shall comply with ASHRAE Standard 62.
c. Shall use a 3/4” - 14 NPT drain connection, possible either through the bottom or end of the drain pan. Connection shall be made per manufacturer’s recommendations.
7. Top panel:
a. Shall be a single piece top panel on 04 thru 09 sizes.
8. Electrical Connections
a. All unit power wiring shall enter unit cabinet at a single, factory-- prepared, knockout location.
b. Thru-- the-- base capability
(1.) Standard unit shall have a thru-- the-- base electrical location(s) using a raised, embossed portion of the unit
basepan.
(2.) Optional, factory-- approved, water-- tight connection method must be used for thru-- the-- base electrical connections.
(3.) No basepan penetration, other than those authorized by the manufacturer, is permitted.
9. Component access panels (standard)
a. Cabinet panels shall be easily removable for servicing.
b. Unit shall have one factory installed, tool-- less, removable, filter access panel.
c. Panels covering control box, indoor fan, indoor fan motor, gas components (where applicable), and compressors shall have molded composite handles.
d. Handles shall be UV modified, composite. permanently attached, and recessed into the panel.
e. Screws on the vertical portion of all removable access panel shall engage into heat resistant, molded composite collars.
f. Collars shall be removable and easily replaceable using manufacturer recommended parts.
23 81 19.13.I. N/A
23 81 19.13.J. Coils
1. Standard Aluminum/Copper Coils: on all models.
a. Standard evaporator and condenser coils shall have aluminum lanced plate fins mechanically bonded to seamless internally grooved copper tubes with all joints brazed.
b. Evaporator coils shall be leak tested to 150 psig, pressure tested to 450 psig, and qualified to UL 1995 burst
test at 1775 psig.
c. Condenser coils shall be leak tested to 150 psig, pressure tested to 650 psig, and qualified to UL 1995 burst
test at 1980 psig.
548J
2. Optional Pre-- coated aluminum-- fin condenser coils: on all models.
a. Shall have a durable epoxy-- phenolic coating to provide protection in mildly corrosive coastal environments.
b. Coating shall be applied to the aluminum fin stock prior to the fin stamping process to create an inert barrier
between the aluminum fin and copper tube.
c. Epoxy-- phenolic barrier shall minimize galvanic action between dissimilar metals.
3. Optional Copper-- fin evaporator and condenser coils: on all models.
a. Shall be constructed of copper fins mechanically bonded to copper tubes and copper tube sheets.
b. Galvanized steel tube sheets shall not be acceptable.
c. A polymer strip shall prevent coil assembly from contacting the sheet metal coil pan to minimize potential for
galvanic corrosion between coil and pan.
4. Optional E-- coated aluminum-- fin evaporator and condenser coils: on all models.
a. Shall have a flexible epoxy polymer coating uniformly applied to all coil surface areas without material
bridging between fins.
b. Coating process shall ensure complete coil encapsulation of tubes, fins and headers.
c. Color shall be high gloss black with gloss per ASTM D523-- 89.
d. Uniform dry film thickness from 0.8 to 1.2 mil on all surface areas including fin edges.
e. Superior hardness characteristics of 2H per ASTM D3363-- 92A and cross-- hatch adhesion of 4B-- 5B per ASTM
D3359-- 93.
f. Impact resistance shall be up to 160 in.-- lb (ASTM D2794-- 93).
g. Humidity and water immersion resistance shall be up to minimum 1000 and 250 hours respectively (ASTM
D2247-- 92 and ASTM D870-- 92).
h. Corrosion durability shall be confirmed through testing to be no less than 1000 hours salt spray per ASTM
B117-- 90.
23 81 19.13.K. Refrigerant Components
1. Refrigerant circuit shall include the following control, safety, and maintenance features:
a. Fixed orifice metering system shall prevent mal-- distribution of two-- phase refrigerant by including multiple
fixed orifice devices in each refrigeration circuit. Each orifice is to be optimized to the coil circuit it serves.
b. Refrigerant filter drier.
c. Service gauge connections on suction and discharge lines.
d. Pressure gauge access through a specially designed access port in the top panel of the unit.
e. Suction line accumulator to provide protection in all operating modes from cooling, heating and reverse cycle
switching.
2. There shall be gauge line access port in the top of the rooftop, covered by a black, removable plug.
a. The plug shall be easy to remove and replace.
b. When the plug is removed, the gauge access port shall enable maintenance personnel to route their pressure
gauge lines.
c. This gauge access port shall facilitate correct and accurate condenser pressure readings by enabling the reading with the compressor access panel on.
d. The plug shall be made of a leak proof, UV-- resistant, composite material.
3. Compressors
a. Unit shall use one fully hermetic, scroll compressor for each independent refrigeration circuit.
b. Models shall be available with single compressor designs on 04-- 12 models, plus additional 2 compressor
(stage) models from 08-- 09 sizes.
c. Compressor motors shall be cooled by refrigerant gas passing through motor windings.
d. Compressors shall be internally protected from high discharge temperature conditions.
e. Compressors shall be protected from an over-- temperature and over-- amperage conditions by an internal, motor
overload device.
f. Compressor shall be factory mounted on rubber grommets.
g. Compressor motors shall have internal line break thermal, current overload and high pressure differential protection.
h. Crankcase heaters shall be utilized on all models (except 04 size) to protect compressor with specific refrigerant charge.
23 81 19.13.L. Filter Section
1. Filters access is specified in the unit cabinet section of this specification.
2. Filters shall be held in place by a pivoting filter tray, facilitating easy removal and installation.
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3. Shall consist of factory-- installed, low velocity, throw-- away 2-- in. thick fiberglass filters.
4. Filters shall be standard, commercially available sizes.
5. Only one size filter per unit is allowed.
23 81 19.13.M. Evaporator Fan and Motor
1. Evaporator fan motor:
a. Shall have permanently lubricated bearings.
b. Shall have inherent automatic-- reset thermal overload protection or circuit breaker.
c. Shall have a maximum continuous bhp rating for continuous duty operation; no safety factors above that rating
shall be required.
2. Electric Drive (Direct Drive) X13 – 5 Speed/Torque Evaporator Fan:
a. Multi speed motor with easy quick adjustment settings.
b. Blower fan shall be double-- inlet type with forward-- curved blades.
c. Shall be constructed from steel with a corrosion resistant finish and dynamically balanced.
d. Standard on all 04-- 06 models with 208/230/1/60 operation
e. Standard on all 04-- 06 3-- phase models, with optional belt drive.
3. Belt-- driven Evaporator Fan:
a. Belt drive shall include an adjustable-- pitch motor pulley.
b. Shall use sealed, permanently lubricated ball-- bearing type.
c. Blower fan shall be double-- inlet type with forward-- curved blades.
d. Shall be constructed from steel with a corrosion resistant finish and dynamically balanced.
e. Standard on all 07 size models. Optional on all 04-- 06 3-- phase models.
23 81 19.13.N. Condenser Fans and Motors
1. Condenser fan motors:
a. Shall be a totally enclosed motor.
b. Shall use permanently lubricated bearings.
c. Shall have inherent thermal overload protection with an automatic reset feature.
d. Shall use a shaft-- down design on 04 to 09 models.
2. Condenser Fans:
a. Shall be a direct-- driven propeller type fan.
b. Shall have aluminum blades riveted to corrosion-- resistant steel spiders and shall be dynamically balanced.
23 81 19.13.O. Special Features, Options and Accessories
1. Integrated Economizers:
a. Integrated, gear-- driven parallel modulating blade design type capable of simultaneous economizer and compressor operation.
b. Independent modules for vertical or horizontal return configurations shall be available. Vertical return modules
shall be available as a factory installed option.
c. Damper blades shall be galvanized steel with composite gears. Plastic or composite blades on intake or return
shall not be acceptable.
d. Shall include all hardware and controls to provide free cooling with outdoor air when temperature and/or humidity are below setpoints.
e. Shall be equipped with gear driven dampers for both the outdoor ventilation air and the return air for positive
air stream control.
f. Shall be equipped with low-- leakage dampers, not to exceed 2% leakage at 1 in. wg pressure differential.
g. Shall be capable of introducing up to 100% outdoor air.
h. Shall be equipped with a barometric relief damper capable of relieving up to 100% return air.
i. Shall be designed to close damper(s) during loss-- of-- power situations with spring return built into motor.
j. Dry bulb outdoor-- air temperature sensor shall be provided as standard. Outdoor air sensor setpoint shall be
adjustable and shall range from 40 to 100_F / 4 to 38_C. Additional sensor options shall be available as accessories.
k. The economizer controller shall also provide control of an accessory power exhaust unit function. Factory set
at 100%, with a range of 0% to 100%.
l. The economizer shall maintain minimum airflow into the building during occupied period and provide design
ventilation rate for full occupancy. A remote potentiometer may be used to override the damper setpoint.
m. Dampers shall be completely closed when the unit is in the unoccupied mode.
548J
n. Economizer controller shall accept a 2-- 10Vdc CO2 sensor input for IAQ/DCV control. In this mode, dampers
shall modulate the outdoor-- air damper to provide ventilation based on the sensor input.
o. Compressor lockout sensor shall open at 35_F (2_C) and closes at 50_F (10_C).
p. Actuator shall be direct coupled to economizer gear. No linkage arms or control rods shall be acceptable.
q. Economizer controller shall provide indications when in free cooling mode, in the DCV mode, or the exhaust
fan contact is closed.
2. Two-- Position Motorized Damper
a. Damper shall be a Two-- Position Motorized Damper. Damper travel shall be from the full closed position to
the field adjustable %-- open setpoint.
b. Damper shall include adjustable damper travel from 25% to 100% (full open).
c. Damper shall include single or dual blade, gear driven dampers and actuator motor.
d. Actuator shall be direct coupled to damper gear. No linkage arms or control rods shall be acceptable.
e. Damper will admit up to 100% outdoor air for applicable rooftop units.
f. Damper shall close upon indoor (evaporator) fan shutoff and/or loss of power.
g. The damper actuator shall plug into the rooftop unit’s wiring harness plug. No hard wiring shall be required.
h. Outside air hood shall include aluminum water entrainment filter
3. Manual damper
a. Manual damper package shall consist of damper, air inlet screen, and rain hood which can be preset to admit
up to 50% outdoor air for year round ventilation.
4. Head Pressure Control Package
a. Controller shall control coil head pressure by condenser-- fan speed modulation or condenser-- fan cycling and
wind baffles.
b. Shall consist of solid-- state control and condenser-- coil temperature sensor to maintain condensing temperature
between 90_F (32_C) and 110_F (43_C) at outdoor ambient temperatures down to - 20_F (-- 29_C).
5. Condenser Coil Hail Guard Assembly
a. Shall protect against damage from hail.
b. Shall be louvered design.
6. Unit-- Mounted, Non-- Fused Disconnect Switch:
a. Switch shall be factory-- installed, internally mounted.
b. National Electric Code (NEC) and UL approved non-- fused switch shall provide unit power shutoff.
c. Shall be accessible from outside the unit
d. Shall provide local shutdown and lockout capability.
7. Convenience Outlet:
a. Powered convenience outlet.
(1.) Outlet shall be powered from main line power to the rooftop unit.
(2.) Outlet shall be powered from line side or load side of disconnect by installing contractor, as required by
code. If outlet is powered from load side of disconnect, unit electrical ratings shall be UL certified and
rated for additional outlet amperage.
(3.) Outlet shall be factory-- installed and internally mounted with easily accessible 115-- v female receptacle.
(4.) Outlet shall include 15 amp GFI receptacles with independent fuse protection.
(5.) Voltage required to operate convenience outlet shall be provided by a factory-- installed step-- down transformer.
(6.) Outlet shall be accessible from outside the unit.
b. Non-- Powered convenience outlet.
(1.) Outlet shall be powered from a separate 115-- 120v power source.
(2.) A transformer shall not be included.
(3.) Outlet shall be factory-- installed and internally mounted with easily accessible 115-- v female receptacle.
(4.) Outlet shall include 15 amp GFI receptacles.
(5.) Outlet shall be accessible from outside the unit.
8. Thru-- the-- Base Connectors:
a. Kits shall provide connectors to permit electrical connections to be brought to the unit through the unit basepan.
b. Minimum of three connection locations per unit.
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9. Fan/Filter Status Switch:
a. Switch shall provide status of indoor evaporator fan (ON/OFF) or filter (CLEAN/DIRTY).
b. Status shall be displayed either over communication bus (when used with direct digital controls) or with an
indicator light at the thermostat.
10. Propeller Power Exhaust:
a. Power exhaust shall be used in conjunction with an integrated economizer.
b. Independent modules for vertical or horizontal return configurations shall be available.
c. Horizontal power exhaust is shall be mounted in return ductwork.
d. Power exhaust shall be controlled by economizer controller operation. Exhaust fans shall be energized when
dampers open past the 0-- 100% adjustable setpoint on the economizer control.
11. Roof Curbs (Vertical):
a. Full perimeter roof curb with exhaust capability providing separate air streams for energy recovery from the
exhaust air without supply air contamination.
b. Formed galvanized steel with wood nailer strip and shall be capable of supporting entire unit weight.
c. Permits installation and securing of ductwork to curb prior to mounting unit on the curb.
12. High-- Static Indoor Fan Motor(s) and Drive(s) (04-- 09):
a. High-- static motor(s) and drive(s) shall be factory-- installed to provide additional performance range.
13. Thru-- the-- Bottom Utility Connectors:
a. Kit shall provide connectors to permit electrical connections to be brought to the unit through the basepan.
14. Fan/Filter Status Switch:
a. Provides status of indoor (evaporator) fan (ON/ OFF) or filter (CLEAN/DIRTY). Status shall be displayed over
communication bus when used with direct digital controls or with an indicator light at the thermostat.
15. Outdoor Air Enthalpy Sensor:
a. The outdoor air enthalpy sensor shall be used to provide single enthalpy control. When used in conjunction
with a return air enthalpy sensor, the unit will provide differential enthalpy control. The sensor allows the unit
to determine if outside air is suitable for free cooling.
16. Return Air Enthalpy Sensor:
a. The return air enthalpy sensor shall be used in conjunction with an outdoor air enthalpy sensor to provide differential enthalpy control.
17. Indoor Air Quality (CO2) Sensor:
a. Shall be able to provide demand ventilation indoor air quality (IAQ) control.
b. The IAQ sensor shall be available in duct mount, wall mount, or wall mount with LED display. The setpoint
shall have adjustment capability.
18. Smoke detectors:
a. Shall be a Four-- Wire Controller and Detector.
b. Shall be environmental compensated with differential sensing for reliable, stable, and drift-- free sensitivity.
c. Shall use magnet-- activated test/reset sensor switches.
d. Shall have tool-- less connection terminal access.
e. Shall have a recessed momentary switch for testing and resetting the detector.
f. Controller shall include:
(1.) One set of normally open alarm initiation contacts for connection to an initiating device circuit on a fire
alarm control panel.
(2.) Two Form-- C auxiliary alarm relays for interface with rooftop unit or other equipment.
(3.) One Form-- C supervision (trouble) relay to control the operation of the Trouble LED on a remote test/reset
station.
(4.) Capable of direct connection to two individual detector modules.
(5.) Can be wired to up to 14 other duct smoke detectors for multiple fan shutdown applications.
19. Time Guard
a. Shall prevent compressor short cycling by providing a 5-- minute delay (±2 minutes) before restarting a compressor after shutdown for any reason.
b. One device shall be required per compressor.
20. Electric Heat:
a. Heating Section
(1.) Heater element open coil resistance wire, nickel-- chrome alloy, 0.29 inches inside diameter, strung through
ceramic insulators mounted on metal frame. Coil ends are staked and welded to terminal screw slots.
548J
(2.) Heater assemblies are provided with integral fusing for protection of internal heater circuits not exceeding
48 amps each. Auto reset thermo limit controls, magnetic heater contactors (24V coil) and terminal block
all mounted in electric heater control box (minimum 18 ga galvanized steel) attached to end of heater
assembly.
E2009 Bryant Heating & Cooling Systems D 7310 W. Morris St. D Indianapolis, IN 46231
Printed in U.S.A.
Edition Date: 03/09
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
76
Catalog No. PDS548J---01
Replaces: NEW