Download 38TKB Air Conditioning Unit Installation and Start

38TKB
Air Conditioning Unit
HEATING & COOLING
Vish
www
c_rier
corn
Installation and Start-Up Instructions
NOTE: Read the entire instruction manual before beginning the
installation.
This symbol
-+
indicates
a change
since
last issue.
SAFETY CONSIDERATIONS
Improper installation, adjustment, alteration, service, maintenance,
nr use can cause explosion, fire. electrical shock, or other
conditions which may cause personal injury or property damage.
Consult a qualified installer, service agency, or your distributor or
branch for inlbrmation or assistance, The qualified installer or
agency must use factory-authorized kits or accessories when
modifying this product. Refer to the individual instructions packaged with the kits or accessories when installing.
Follow all safety codes. Wear sal_ty glasses and work gloves. Use
quenching cloth for brazing operations. Have fire extinguisher
available. Read these instructions thoroughly and follow all
warning or cautions attached to the unit. Consult local building
codes and National Electrical Code (NEC) for special requirements.
Recognize
When
safety
you
manuals,
see
information.
This is the safety-alert
this symbol
on
the unit
be alert to the potential
and
for personal
symbol
A98519
____)
Fig. 1--Model
,_.
in instructions
or
injury.
5. When
passing
opening
Understand these signal words; DANGER. WARNING. and
CAUTION. These words are used with the safety-alert symbol.
DANGER identifies the most serious hazards which will result in
severe personal injury or death. WARNING signifies hazards
which could result in personal injury or death. CAUTION is used
to identify unsafe practices which would result in minor personal
injury or product and property damage.
NOTE:
In some cases,
gas pulsations
from
noise
improper
I. Locate
the unit away
2. Ensure
that vapor
the capacity
3. Run
from
turns
as
arc appropriate
to
by
aw_iding
and the unit to absorb
reserves
the dght
that
to discontinue,
Catalog No. 563-754
tubing
from joists
comes
in direct
tubing
or change at any time, specifications
Printed in U.S.A.
seal
caulk.
the
(See
insulation
use hanger
the hanger
unit
straps
with the
and completely
sur-
(See
the insulation
Fig. 3.)
by using
metal
of the insulation.
to factory-approved
charge
For proper
install
indoor
unit.
for operation
with
operation,
located
size is 3/8dn.
a liquid-line
part
filter
nmnher.
on control
O.D.
tbr all
drier.
Reler
Obtain
to
filter
or branch.
notice and without incurring
Pg 1
by
check
long line.
for appropriate
local distributor
unit
information
liquid-line
including
without
are I in. wide and
insulation.
unit of the same size when connected
tubing.
Always
or designs
Form 38TKB-SSI
floor
and studs with a
contact
which
refrigerant
using charging
Digesl
your
from
system
Maximum
Data
strops
to the shape
is connected
indoor
charge
is pliable
of the tubing
bent to conform
applications
from
dnctwork,
line.
unit contains
Product
which
to the shape
outdoor
residential
with water pipes,
refrigerant
the vapor
factory-approved
driers
PC 101
wall.
(See Fig. 3.)
IMPORTANT:
the structure
the
silicombased
and walls.
necessary,
refrigerant
box cover.
contact
or strap
IMPORTANT:
possible
through
floors,
15 fi of field-supplied
vibration.
Manufacturer
wire
tubing.
outdoor
and bends.
4. Leave some slack between
rigid
When
1.)
as
7, Do not suspend
sleeves
has been traced to
lineset
wall studs,
10. Isolate
of equipment.
line diameters
directly
direct
joists,
conform
windows.
and liquid
tubes
area
installation
of the unit. (See Table
refrigerant
unnecessary
in the living
6. Avoid
9. When
RECOMMENDATIONS
tubes
or other pliable
Fig. 3.)
rounds
Before installing, modifying, or servicing system, main electrical disconnect switch must be in the OFF position. There
may be more than 1 disconnect switch. Lock out and tag
switch with a suitable warning label. Electrical shock can
cause personal injury or death.
refrigerant
with RTV
8. Ensure
'i2LIitTIIX,-1
'
INSTALLATION
38TKB
11-98
obligations.
Replaces:
38TKB-3SI
Table 1--Refrigerant
Connections
and Recommended
LIQUID
UNIT
SIZE
Connection
Diameter
VAPOR
Diameter
Connection
Tube Diameter
Liquid and Vapor Tube Diameters (In.)
018, 024
3/8
3/8
5/8
5/8
030, 036
3/8
3/8
3/4
3/4
042, 048
060
3/8
3/8
3/8
3/8
7/8
7/8
Notes:
7/8
1-1/8
1 Tube diameters are for lengths up to 50 It For tube sets ever 50 ft. consu)t Residential
2 DO not apply capillary tube indoor coils to these units
INSTALLATION
Step 1--Check
INSPECT EQUIPMENT--File
claim with shipping company
prior to installation if shipment is damaged or incomplete. Locate
unit rating plate on unit service panel. (See Fig, 2.) It contains
information needed to properly install unit. Check rating plate to
be sure unit matches job specifications.
on a Solid, Level Mounting
should
be used
and fastened
1-1/8
Guideline.
Roof mounted units exposed to winds above 5 mph may require
wind baffles. Consuft Low-Ambient Guideline for wind baffle
construction.
Pad
NOTI=: Unit must be level to within -+2_ per compressor manufacturer specifications.
If conditions or local codes require the unit be attached to a pad,
bolts
7/8
1-1/8
On rooftop applications, mount on level platfonn Dr frame. Place
unit above a load-bearing wall and isolate unit and tubing set frDm
structure. Arrange supporting members to adequately support unit
and minimize transmission of vibration to building. Consult local
codes governing rooftop applications.
UNPACK UNIT-- Move to final location. Remove carton taking
care not to damage unit.
tie down
Long-Line Application
3/4
provided in unit base paR. Refer to unit mounting pattern shown in
Fig. 2 te determine base pan size and knockout hole location.
Equipment and Job Site
Step 2--Install
VAPOR (LONG LINE)
Tube Diameter
Connection Diameter
5/8
3/4
7/8
7/8
Tube Diameter
through
knockouts
AIR tN
AIR DISCHARGE
I,
1, -
i
_ i ,o_
IL
--',
3f8" (9 53) DIA TIEDOWN
KNOCKOUTS
IN SASEPAN
!
"i
(2) PLACES
c
AIR DISCHARGE
_-
UNIT MOUNTING PATTERN
VIEW FROM TOP
AIR IN
"_
B
8 3G6"
(207.9)
•
,_1_
AIR DISCHARGE
1 9/1"_1_16".-_d_
o
A
2 1/2"
1637)
_-718"
FIELD POWER SUPPLY CONN
(2222) DIA HOLE WITH
I l/B" (28 57) DIA KNOCKOUT
(ALL SIZES) AND 1 3/B" (3492)
DIA KNOCKOUT
SIZES ONLY)
(036 THRU 06C
ACCESS
FIELD CONTROL
CONN
IIII
SUPPLY
PANEL
7f8" (22 22) DIA HOLE
"
.I
__
10 V2"
(2667)
_-_j
4 3116"
(106 3")_
LINE CONNECTION
t
144-6)
NOTES:
1
ALLOW
30" (762) CLEARANCE
TO sEevIcE
END OF
3
4
5
UNIT 48" (1219) ABOVE UNIT, 6" (152) ON ONE SIDE, 12" (306)
ON REMAINING SIDE, AND 24" (610) BE nNEEN
UNITS FOR PROPER AIRFLOW
2
MINIMUM
55F
OUTDOOR
OPERATING
(12 8_C), (UNLESS
AMBIENT
LOW AMBIENT
IN COOLING
CONTROL
MODE
IS USED) MAX
MAXIMUM OUTDOOR OPERATING
AMBIENT IN HEATING MODE
DIMENSIONS
IN PARENTHESIS
ARE IN MILLIMETERS
SERIES DESIGNATION
IS THE 13TH POSITION OF THE UNIT
MODEL NUMBER
IS 66 F {16.9o0)
IS
125"F (51 7°C)
A91055
MODEL 38TKB
A
B
C
D
In
In.
In.
In.
013, 024, 030, 036
22-1/2
27-1/2
2-13/16
6-15/16
042, 048, 060
30
34-15/16
4
9-3/4
Fig. 2--Unit
Reference Drawing
2
NOTE:
Avoid
contact
OUTDOOR
between tubing and structure
WALl:
INDOOR
WALL
.___)
CAULK_IQUID
_L.__INSULATION
TUBE
_7'_y
_'_
F,,_[,{_T_[,]:
To prevent
L.-- VAPOR TUBE
h) urm or
damage
I
service
valves
the
observe
1hi)owing:
THROUGH
THE WALL
• Use a brazing
shield.
• Wrap service
ma_eriah
Outdoor
INSULATION
package
capacity
TUBE_I
i,
VAPORTUBE
moisture
Allow
space
30 in. clearance
unit. For proper
airflow,
Refer
to service
INDOOR
end of
a 6 in. clearance
UNIT
ant
on
UNIT--
charge
Outdoor
for operation
fall directly
REFRIGERANT
TUBING-
door
vapor
and
grade
tubing.
unit at feast
The minimum
outdoor
and the maximum
125°F.
Check
on unit.
6 in. above
roof
refrigerant
unit
Ambients
SWEAT
operating
tory and ready
outdoor
ambient
operating
in ¢ooling
ambient
mode is 55°F.
in cooling
mode
Indoor
Check
indoor
coil
shown
on unit rating
piston with piston
piston
AccuRater_
Piston,
to see if it matches
plate. If it does not match,
shipped
unit is correct
with this unit. The
for any approved
indoor
replace
--
for brazing.
bearing
now ready
piston
factory
unit
require-
your
local
they
and
tubing
valves.
Service
valves
when
tubing.
set can be brazed
to fittings
(See
to the service
Refrigerant
brazing
tubing
This check
should
1.) Use
from
the service
bearing
on out-
Table
are closed
wrapping
or non-silver
for leak testing.
refriger-
size
efficiency.
service
After
system
of same
or factory-accessory
Connect
liquid
CONNECTION
silver
correct
indoor
for maximum
sult local code requirements.
if Required
the required
charge
a wet cloth, the robing
is
either
Step 5--Replace
I for field tubing
TO FACTORY-APPROVED
by 15 fi of field-supplied
refrigerant
Step 4--Operating
outdoor
locate
the recomApplication
2 for accessory
unit contains
with
snow,
appfications,
Following
Long-Line
than 36 in.. consult
CONNECTED
connected
On rooftop
surface.
size
in the system,
sides must be main_aineO.
units. Position so water.
cannot
of correct
50 It. substantial
Refer to Table
to Table
greater
1 side of anit and 12 in. on all remaining
Maintain
a distance
of 24 m. between
roof or eaves
beyond
Split System
these losses.
length.
using accessory
tubing
losses can occur.
applications
OUTDOOR
wiring, ret_ig-
for airflow,
section
If refrigerant
tubes or indoor coil are exposed to atmosphere,
must be evacuated
to 500 microns to eliminate contamination
Installation
Requirements
allow sufficient
line
---). For buried-line
distributor.
A94028
Fig. 3--Piping
or ice from
sink
morns.
LIQUID TUBE
and service,
will reduce
equivalent
SUSPENSION
unit and 48 in. abouve
or use a heat
refrigerant
requiremcnts
in the Residential
Guideline
1" MIN _
For tubing
and performance
mendations
h
erant piping,
cloth
to indoor
or field-supplied
and condition.
installing,
wet
units may be connected
tubing
When
with
.,_r/'-JOIST
HANGER STRAP
(AROUNDVAPOR--_--
Step 3--Clearance
valves
fac-
valve with
valve using
material.
Con-
and indoor coil are
include
all field and
joints.
indoor coil
piston shipped
g_] ['_-t iJ[']21
with
coil cmnbination.
To avoid valve damage while brazing, service valves must be
wrapped in a heat-sinking material such as a wet cloth.
Step
Step 6--Make
Tubing Connections
Vt_lLrJ/'-._:UI17
[_]
7--Make
pressure
and recover
all refrigerant
before
syslem
wiring
complies
and electrical
codes,
and voltage
including
solenoid
is within
fire. safety.
limits
company
improper
rating
lbr recommended
voltage.
See unit
plate
shown
for correction
of
circuit
device
Operation
of
and could aft_ct
install
3
to system
local power
abuse
valves.
with local and national
on unit rating plate. Contact
NOTE:
repair or final unit disposal to avoid per_onal mjut 3' or dcznb.
Use all ,service
pots
and open all flow-control
devices.
Connections
Be sure field
protection
Relieve
Electrical
unit
unil
in system
fluctuate
above
NOTE=:
unit.
Use
where
or below
copper
on bnproper
unit reliability.
wire
voltage
permissible
only
line voltage
constitutes
See unit rating plate. Do not
or
phase
imbalance
may
limits,
between
disconnect
switch
and
-..)
Table 2--Accessory
ACCESSORY
Crankcase
Heater
Usage
REQUIRED FOR
LOW-AMBIENT
APPLICATIONS
(BELOW 55°F)
Yes
REQUIRED FOR
LONG-LINE
APPLICATIONS*
(OVER 50 FT)
Yes
REQUIRED FOR
SEA COAST
APPLICATIONS
(WITHIN 2 MILES)
No
Evaporator Freeze Thermostat
Winter Start Control
Yes
No
No
Yes1"
No
No
Accumulator
NO
No
NO
Compressor Start Assist
Capacitor and Relay
Yes
Yes
No
Low-Ambient Controller,
MotorMaster_ Control,
or
Low-Ambient Pressure Switch
Yes
No
No
Wind Baffle
See Low-Ambient
Coastal Filter
Instructions
No
Recommended
Support Feet
Solenoid Valve
or
Hard Shutoff TXV
No
No
Yes
No
Liquid-Line
Recommended
See Long-Line
Application
Guideline
No
Yes:[:
Ball Bearing Fan Motor
No
NO
No
No
• For tubing line sets between .50 and 175 ft, refer to Residential Split System Long-Line Application Guideline.
t Only when low-pressure switch is used
:_ Required for Low-Ambient Controller (full modulation feaature) and MotorMaster Control only
CONNECT GROUND AND POWER WIRES -- Connect ground
wire to ground connection in control box for safety. Connect
power wiring to contactor as shown in Fig. 4.
CONNECT
NOTE: Install branch circuit of adequate size per NEC to handle
unit starting current. Locate disconnect within sight from and
readily accessible from unit per Section 440-14 of NEC.
r,.] w._,d
The unit cabinet must have an uninterrupted or unbroken
ground to minimize personal injury if an electrical fault
should occur. The ground may consist of electrical wire or
metal conduit when inslalJed in accordance with existing
electrical codes. Failure to follow this warning can result in an
electrical shock, fire, or death.
ROUTE GROUND AND POWER WIRES--Remove
access
panel and control box cover to gain access to unit wiring. Extend
wires from disconnect through power wiring hole provided and
into unit control box,
DISCONNECT
PER N. E. C. AND/OR
LOCAL CODES
CQNTACTOR
I
I
I
FIELDPQWER
]
C>°C}
WIRING
©oC>
FIELD GROUND
WIRING
GROUND
LUG
A91056
Fig. 4--Line
Power Connections
WIRING--Route
24-v control wires
and connect
leads to control
Use No, 18 AWG color-coded, insulated (35 ° C minimum) wire.
If thermostat is located more than 100 ft from unit as measured
along the control voltage wires, use No. 16 AWG color-coded
wires to avoid excessive voltage drop.
All wiring must be NEC Class I and must be separated from
incoming power leads.
Use furnace transformer, fan-coil transformer, or accessory Iransformer for control power. 24-v/40va minimum.
NOTE: Use of available 24-v accessories may exceed the minimum 40-va power requirement. Determine total transformer loading and increase the transformer capacity or split the load with an
accessory transformer as required.
Step 8_Compressor
Crankcase
Heater
When equipped with a crankcase heater, furnish power to heater a
minimum of 24 hrs before starting unit. To furnish pewer to heater
only, set dlcrmostat to OFF position and close eleclrical disconnect
to outdoor unit.
A crankcase heater is required if the refrigerant tubing is longer
Ihan 50 ft Rel_r to Residential Split System Long-Line Application Guideline.
Step 9--Install
Electrical Accessories,
Refer to the individual instructions
accessory when insla]ling.
Q
j
CONTROL
through control wiring grommet
wiring. (See Fig. 5.)
If Any
packaged
with the kit or
CARRIER
NON-PROGRAMMABLE
THERMOSTAT
MODEL AC
24 VAC HOT
_.-,
24 VAC COM
_-"
SINGLE-STAGE
FURNACE
CARRIER
NON-PROGRAMMABLE
THERMOSTAT
MODEL AC
AIR
CONDITIONER
24 VAC HOT
FA. FS, FC,
FD, FF
FAN COIL
AIR
CONDITIONER
_-r_q
HEAT STAGE
1
COOL STAGE
1
INDOOR
......
J
_
SEE
NOTE2
HEATSTAGE1
COOLSTAGE1
.... L_ I
FAN
CL_---
SEE
NOTE2
....
_-
24 VAC COM
INDOOR
_
FAN
_--°
A9468
A97467
CARRIER
PROGRAMMABLE
THERMOSTAT
MODELAC
SINGLE-STAGE
FURNACE
CARRIER
PROGRAMMABLE
THERMOSTAT
MODEL AC
AIR
CONDITIONER
FA, FB, FC,
FD, FF, FX
FAN COIL
AIR
CONDITIONER
I -24 VAC
HOT
INDOOR
24 VAC HOT
[_
--[_
INDOOR
[_
--[w]
HEAT STAGE 1
[_
FAN
HEAT STAGE
1
COOL STAGE 1
FAN
COOL STAGE 1
NOT USED
_'_
NOT USED
SEE
NOTE2
NOT USED
SEE
NOTE2
NOT USED
-El-
24 VAC COM
NOT USED
[_]1
NOT USED
r_J
I
24 VAC COM
E_
NOT USED
{_11
NOT USED
J'_'_J
1
A97469
OPTIONAL
OUTDOOR
--
SENSOR
CONNECTION
S'_7
OTHER
NON-PROGRAMMABLE
AC THERMOSTAT
24 VAC
A97595
31
OUTDOOR
SENSOR
CONNECTIO
OPT,ONAL
_E_I
I
SINGLE-STAGE
FURNACE
COOL
INDOOR
I_-I
OTHER
NON-PROGRAMMABLE
AC THERMOSTAT
AIR
CONDITIONER
I
FA, FB, FC,
FO, FF, FX
FAN COIL
AIR
CONDITIONER
I
HOT
24VACHOT
HEAT
'
STAGE
STAGE
PAN
1
Y_
_'_
n.
SEE
NOTE2
1
_-
HEATSTAGE'
D _-
E}-.
-_1
-J
C /
SEE
NOTE2
OOOLSTAGE,
[B--R .....
'NDOORFAN
D a--@
A97367
Fig. 5---24-v Control Circuit Connections
A97593
CARRIER
NON-PROGRAMMABLE
THERMOSTAT
MODEL AC
FK4C. FV4A
FAN COfL
AIR
CONDITIONER
II¢/_J1JUMPER
24 MAC COM
CARRIER
PROGRAMMADLE
THERMOSTAT
MODEL AC
_ __
HEAT STAGE 1
_ _]_
FAN
AIR
CONDITIONER
SEE
NOTE2
COOL STAGE 1
INDOOR
FK4C, FV4A
AN COIL
L
24 VAC HOT
[_
INDOOR
[_
FAN
-IN"J_.___,_UMP_
-IN
HEAT STAGE 1
[]
[]
A97596
r-_ _'_JUMPER
COOL STAGE 1
NOT USED
OTHER
NON-PROGRAMMABLE
AC THERMOSTAT
NOT USED
FK4C, FV4A
FAN COIL
AIR
CONDITIONER
I
SEE
NOTE 2
4V OO
4g]-
J1 JUMPER
[]
[]
NOT USED
NOT USED
HEAT STAGE
1
2,VAC.OT
COOL STAGE
INDOOR
1
SEE
NOTE2
i
A97597
OUTDOOR
SSNSOR
OPTIONAL
CONNECTIO
FAN
N_
I
-_GI
I
_
I011
f
IYll
I
A97592
NOTES:
1. CARRIER
2.
WIRING
3.
SOME
CYCLE
4,
THERMOSTAT
MUST
UNITS
A LIQUID-LINE
HOUR
6.
TO
CONFORM
ARE
LIMIT.
STAGE
ARE
ELECTRIC
DIAGRAMS
NEC
OR
WITH
CONNECT
SOLENOID
SEE
TO
EQUIPPED
PROTECTION.
5. THERMOSTATS
WIRING
THERMOSTAT
RESISTANCE
LOCAL
FIELD
ACCURATE
SWlTCH(ES),
WIRING
IS REQUIRED
CONFIGURED
ON
WITH
INSTALLATION
HEAT.
ONLY
FOR
MODEL
NUMBERS
BEGINNING
WITH
TSTAT
CODES.
PRESSURE
24-V
VALVE
FACTORY
ARE
TO
TEMPERATURE
SOME
OR
STRIPPED
5-M1NUTE
COMPRESSOR
LEADS,
UNITS,
5-MINUTE
INSTRUCTIONS
CONSULT
SWITCH,
FACTORY-PROVIDED
OUTDOOR
COMPRESSOR
FOR
CYCLE
PROTECTION
AND
4 CYCLES
PER
DETAILS.
THERMOSTAT
INSTALLATION
INSTRUCTIONS.
LEGEND
24-V FACTORY WIRING
24-V FIELD WIRING
©
©
FIELD SPLICE CONNECTION
CONTACTOR
A97368
Fig. 5---Typical 24-v Circuit Connections (Continued)
Step 10--Start-Up
and Check Charge
NOTE:
If superheat
favorable,
plate
To
prevent
compressor
damage
or personal
injury,
+ 0.6
system
• Do not operate
unit
• Do not disable
low-pressure
In scroll
compressor
• Dome
temperatures
• In 3 phase
observe
with rcl?-igerant.
in a vacumn
ozJfl
pressure.
switch
may he hot+
application,
incorrect
in elevated
I. Operate
phasing
noise
will cause
levels,
reverse
equalized
by reversing
pres-
unit
2. Measure
power
suction
mistor
valve.
prevent
personal
injury
and gloves
wear
safety
when handling
glasses,
protective
refiigemnt
• Back sealing
service
valves
are not equipped
Fully back seat (counter
gage
clockwise)
with Schrader
valve stem before
seating
service
or final
these
valves
are equipped
with
Schrader
to atmosphere.
Recover
during system
seat (open)
with
installed.
liquid and vapor
valve
Replace
stem(s)
tube service
front
seated
stem caps after
electrical
is below
disconnects
thermostat
indoor
at desired
ambient
5. Set room thermostat
mode.
as desired.
refrigerant
to energize
R-Y energizes
starting
When
circuit.
the indoor
Operate
and blower
unit
CHARGE
the thermostat
at ON or AUTO
Check
motor
relay
on power
makes
contactor,
starting
suction
pressure
of
I0
minutes
before
is
checking
suction
by attaching
an accurate
gage
In
port.
temperature
type or electronic
has a lower
10. If outdoor
by attaching
thermometer
suction
reclaim
air
charge
Step 12--Final
system
IMPORTANT:
an accurate
ther-
to suction line at service
with thermometer.
line
refrigerant
temperature
until
charted
than charted
temperature
is
temperature
or
to new suction
pressure
at suction
line temperature
valve
indicated
on
Checks
Before leaving job, be sure to do the following:
1. Securely fasten all panels and covers.
circuits
outdoor
the indoor
to indoor and
R-Y and R-G.
fan motor
unit
blower
and
3. Leave User's Manual with owner. Explain system operation
and periodic maintenance requirements outlined in manual.
4. Fill out Dealer Installation
file.
its contacts
Compressor
with
CARE AND MAINTENANCE
open.
and motors
a time-delay
relay
de-energizing
stop
circuit,
90 sec_mds to increase
the
system
For continuing high performance and to minimize possible equipment failure, periodic maintenance must be performed on this
equipment.
Frequency
Charge
Factory
Adjust charge by flfllowing
located on unit.
charge
procedure
is shown
shown
Checklist and place in customer
relay.
on high speed.
will run an additional
--
charge
The fi)llowing procedure
+_ 21% of its rated CFM.
2. Tighten service valve stem caps to 1/12-turn past finger tight.
is equipped
Step 11'--Check
a minimum
valve service
temperature,
reached.
changes,
chart.
Be sure set point
unit for 15 minutes.
is satisfied,
If indoor
= 6 oz of additional
to
with
system.
and fan control
R-G energizes
contactor
UNIT
is opened
and tighten
temperature.
at COOL
blower
the thermostat
indoor blower
efficiency
and
charge.
On a call for cooling,
compressor
15 ft
temperature.
SEQUENCE
OF OPERATION
-- Turn
outdoor units. Transformer
is energized.
Circuit
9. If unit
valves.
(closed)
system
refrigerant
flow. Replace caps finger-tight
wrench an additional
1/12 turn.
4. Set room
below
8. If unit has a higher suction line temperature than charted
temperature, add refrigerant until charted temperature is
reached.
to start up the system:
2. Unit is shipped
3. Close
or
7. Refer to Table 4. Find superheat temperature located in item 6
and suction pressure. At this intersection, note suction line
temperature.
unit disposal.
steps
I. Fully back
caps
above
not
rating
6. Refer to Table 3. Find outdoor temperature and evaporator
entering air wet-bulb temperature. At this intersection, note
superheat.
port cap
Do not vent refrigerant
Fofiow
line
are
with unit
5. Measure indoor air (entering indoor coil) wet-bulb temperalure with a sling psychrometer.
¥.'_[@211ii['/21
repair
liquid
4. Measure outdoor air dry-bulb temperature
and observe
the following:
• Front
valves.
conditions
charge,
3. Measure
removing
3/g-in.
COOLING
ONLY PROCEDURE-valid when indoor airflow is within
applications:
resulting
valves.
of
25 t_ - 15 ft = I0 fl X 0.6 o_ft
or at negative
sures and reduced current draw. Correct
connection
LI and L2 on contactor.
clothing,
charging
in accordance
EXAMPLE:
• Do not overcharge
To
or subcooling
must be weighed
respectively.
the following:
rotation,
charge
on uniI raling plale.
on charging
tables
of maintenance
areas,
such as coastal
frequent mainlenance.
may
vary
applications,
depending
which
may
on geographic
require
more
Table 3--Superheat
EVAPORATOR
Charging
OUTDOOR
TEMP
(OF)
50
52
54
56
58
60
62
64
66
68
70
72
74
76
55
9
12
14
17
20
23
26
29
32
35
37
40
42
45
(°FWB)
7
10
12
15
18
21
24
27
30
33
35
38
40
43
65
--
6
10
13
16
19
21
24
27
30
33
36
38
41
70
--
--
7
10
13
16
19
21
24
27
30
33
36
39
75
--
--
--
6
9
12
15
18
21
24
28
31
34
37
80
....
5
8
12
15
18
21
25
28
31
35
65
......
8
11
15
19
22
26
30
33
90
......
5
9
13
16
20
24
27
31
95
.......
6
10
14
18
22
25
29
100
........
8
12
15
20
23
27
105
........
5
9
13
17
22
26
110
..........
6
11
15
20
25
115
..........
8
14
18
23
60
--Where
ENTERING AIR TEMPERATURE
a dash appears,
do not attempt to charge
system under these conditions
or refngerant slugging
may occur
Charge
must be weighed in.NOTE:
Superheat °F is at low-side service pod,
Table 4---Required Suction-Line Temperature
SUPERHEAT
SUCTION
PRESSURE
AT SERVICE
(°F)
61,5
64.2
67.1
70.0
73.0
0
35
37
39
41
2
37
39
41
43
4
39
41
43
6
41
43
8
43
10
PORT (PSIG)
i E..ivl I-
76.0
79.2
82.4
85.7
43
45
47
49
51
45
47
49
51
53
45
47
49
61
53
55
45
47
49
51
53
55
57
45
47
49
51
53
55
57
59
45
47
49
51
53
55
57
59
61
12
47
49
51
53
85
57
59
61
63
14
49
51
55
57
59
61
63
65
16
51
53
53
55
57
59
61
63
65
67
18
53
55
57
59
61
63
65
67
69
2O
57
59
61
63
65
67
69
71
22
55
57
59
61
63
65
67
69
71
73
24
59
61
63
65
67
69
71
73
75
26
61
63
65
67
69
71
73
75
77
28
65
67
69
71
73
75
77
79
30
63
65
67
69
71
73
75
77
79
81
32
67
69
71
73
75
77
79
81
83
34
69
71
73
75
77
79
81
83
85
36
71
73
75
77
79
81
83
85
87
38
73
75
77
79
81
83
85
87
89
4O
75
77
79
81
83
85
87
89
91
Copyright 1999CARRIER Coq3.• 7310 W. Morris St. • Indianapolis, IN 46231
38tkb5si
PC 101
Catalog No. 563-754
Printed in U.S.A.
Form 38TKB-5SI
Pg 8
11
m98
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Replaces: 38TKB-3SI