Download Installation, Start-Up, and Operating Instructions

HEATING
Visit
50GL
Single Package Electric Cooling Units
with Puron® (R-410A) Refrigerant
& COOLING
www.camer.com
Installation, Start-Up, and Operating Instructions
Sizes 024-060
NOTE:
Read
installation.
the entire
instruction
manual
before
starting
the
Index
Page
SAFETY
CONSIDERATIONS
RULES
FOR
SAFE
GENERAL
INSTALLATION
l
AND OPERATION.I-4
................................................................................
RECEIVING
Step
...................................................
AND
INSTALLATION
4
..................................
4-10
1 -- Check Equipment
.......................................................
IDENTIFY
UNIT ......................................................................
4
4
INSPECT
4
Step
SHIPMENT
.............................................................
2 -ROOF
Provide
Unit Support
.................................................
CURB ............................................................................
4
4
SLAB
MOUNT
4
GROUND
Step
3 --
.........................................................................
LEVEL ....................................................................
Field
Fabricate
Ductwork
4
..........................................
4
Step 4 -- Provide Clearances
.....................................................
Step 5 -- Rig and Place Unit ......................................................
INSPECTION ............................................................................
INSTALLATION
Step 6 --
Connect
Step 7 --
Install
4
4
4
..................................................................
Condensate
4-6
Drain ........................................
Duct Connections
6
........................................
6-8
C99064
CONFIGURING
UNITS FOR DOWNFLOW
(VERTICAL)
DISCHARGE
..............................................................................
7-8
Step 8 -- Install Electrical Connections
..............................
HIGH-VOLTAGE
CONNECTIONS
..................................
STANDARD
CONNECTION
8-10
8-10
................................................
10
Fig. 1--Model
50GL
service agency for information or assistance. The qualified installer or agency must use only factory-authorized kits or accessories when modifying this product.
SPECIAL
PROCEDURES
FOR 208-V OPERATION ......... 10
CONTROL
VOLTAGE CONNECTIONS
............................
10
TRANSFORMER
PROTECTION
PRE-START-UP
START-UP
.........................................
10
.........................................................................
I1
.............................................................................
MAINTENANCE
TROUBLESHOOTING
START-UP
11-14
..................................................................
15-20
.............................................................
22
.........................................................
23
CHECKLIST
NOTE TO INSTALLER
-- Before
INSTRUCTIONS
CAREFULLY
make sure the User's Manual
the unit after installation.
the installation,
READ THESE
AND COMPLETELY.
Also,
and Replacement
Guide are left with
Before
performing
system,
turn
power
switch,
serious
injury
Puron
(R-410A)
standard
service
off power
if applicable.
systems
operations
off accessory
Electrical
shock
on
heater
can
cause
is rated
operate
at higher
pressures
than
Do not use R-22 service
on Puron
equipment
Turn
or death.
R-22 systems.
components
or maintenance
to unit.
(R-410A)
for Puron
equipment.
equipment
Ensure
or
service
(R-410A).
SAFETY CONSIDERA_ONS
RULES
Installation
hazardous
trained
and servicing
due to system
and qualified
air-conditioning
Untrained
equipment,
Follow
personnel
and electrical
should
can
components.
install,
repair,
be
Only
or service
service
can perform
personnel.
observe
basic
When
precautions
to the unit, and other
all safety
maintenance
should
working
codes. Wear safety
precautions
glasses
of
be performed
on air-conditioning
in the literature,
safety
functions
reserves the right to discontinue,
PC 101
the potential
Catalog No. 565-013
IMPORTANT,
will result
injury
result
unsafe
or product
are used
installation,
or change at any time, specifications
DANGER
in severe
identify
Printed io U.S.A,
AND OPERATION
injury.
words DANGER,
and NOTE.
alert symbol.
which could
Use
INSTALLATION
for personal
the signal
tags and labels
and work gloves.
SAFE
Recognize
safety information.
This is the safety-alert
symbol z_ •
When you see this symbol in instructions
or manuals,
be alert to
that may apply.
quenching
cloth for unhrazing
operations.
Have fh'e extinguisher
available
for all brazing operations.
Consult a qualified installer or
Manufacturer
FOR
Understand
coils and filters. All other operations
by trained
attached
pressure
equipment
equipment.
p_rsonnel
cleaning
of air-conditioning
or designs
injury
which
and property
WARNING,
WARNING
hazards
signifies
or death. CAUTION
would
damage.
suggestions
CAUTION,
are used with the safety-
the most serious
or death.
in serious
practices
reliability,
words
identifies
injury
to highlight
Form 50GL-ISI
These
which
result
NOTE
which
a hazard
is used to
in minor
personal
and IMPORTANT
will result
in enhanced
or operation.
without notice and without incurring
Pg 1
6-00
obligations.
Replaces:
New
1463]
88 3
I
i) 48]
249 6
[9 831
_BSO
S
121 {7)
249 6
1983]
TOP VIEW
REAR VIEW
REQ'D CLEARANCES
FOR OPERATION
AND SERVICING.
Evaporator col( access side ..................
Power entry side (except for NEC requirements)
Unit top ..........................
Side opposite ducts
.....................
Duct panel ........................
.........
in. (ram)
REG'D CLEARANCES
36 (914)
36 (914)
48 [1219)
36 (914)
12 [304.8)*
*Minimum distances: If unit is placed less than 12 in. (304•8 ram) from wall
system, then the system performance may be compromised.
NEC REQ'D CLEARANCES.
Between
Unit and
Unit and
surfaces,
LEGEND
CG - Center of Gravity
COND - Condenser
EVAP - Evaporator
NEC - National Electrical
TO COMBUSTIBLE
MAT'L. in. (ram)
Top of unit .........................
Duct side of unit .......................
Side opposite ducts .....................
Bottom of unit .......................
Flue panel .........................
14 (355.6)
2 (50.8)
14 (355.6)
0.50 [12.7)
36 (914.4)
in. (ram)
units, power entry side
..............
ungrounded surfaces, power entry side .........
block or concrete wails and other grounded
control box side
.................
42 (10_6.8)
36 (914)
42 (1066.8)
Code
REQ'D - Required
Note: Dimensions are in in. [rnm)
1193g
(4T.oo]
t
22
_LPleE,S0R
2
BL_,R GA, ,EC:I0,
14 81)
FRONTVIEW
Fig. 2_0GL024-036
UNn"
50GL024
50GL030
50GL036
ELECTRICAL
CHARACTERISTICS
208/230-1-60
208/230-1-60,
208/230-3-60
20_11-_50, 208/230-3-60,
460-3-60
UNIT WEIGHT
RIGHT 51DE VIEW
C00064
Unit Dimensions
CENTER OF GRAVITY
IN. [MM]
uNrr HEIGHT
IN. (MM]
Ib
kg
mA"
X
Y
Z
270
122.5
37,02 [940.3]
18.5 [469.91
14.5 [368.31
16.0 1406.4]
291
132.0
39.02 [99t .1]
19.5 [495.3]
15.5 [393.7}
17.6 [447.0]
2g9
135.6
35,02 [889.5]
19.5 [495.3]
15.3 [387.4}
16.5 [41g.11
•-MHHIIHJ
SUPPL+
402 _3]
R[TUR_
D+_[
bVCT
OPENING
OPENING
I
[4
88 3
{3 48i
i
k
63]
C01L
- 347 3
113 _ll
-113 831
TOP VIEW
113 331
REARVIEW
REQUIRED CLEARANCE FOR OPERATION AND SERVICING
EVAR COIL ACCESS SIDE ..............................................................
POWER ENTRY SIDE ......................................................................
(EXCEPT FOR NEC REQUIREMENTS)
UNIT TOP .........................................................................................
SIDE OPPOSITE DUCTS ................................................................
DUCT PANEL ...................................................................................
REQUIRED CLEARANCE TO COMBUSTIBLE MATL.
in. [ram]
36.00 [914.0]
36.00 [914.0]
TOP OF UNIT ...................................................................................
DUCT SiDE OF UNiT ........................................................................
SIDE OPPOSITE DUCTS ................................................................
RO]-i-OM OF UNIT .............................................................................
ELECTRIC HE_,T PANEL .................................................................
36.00 [914.0]
36.00 [914.0]
12.00 [304.8] *
in. (rnm]
14.00 {355.6]
2.00 [50.8]
14.00 [355.6]
0.50 [12.7]
36.00 [914.4]
NEC. REQUIRED CLEARANCES.
*MINIMUM DISTANCES: IF UNIT IS PLACED LESS THAN 12.00 [304.8] FROM
WALL SYSTEM, THEN SYSTEM PERFORMANCE
MAYBE COMPROMISE.
MILLIMETERS (IN.]
BETWEEN UNITS, POWER ENTRY SIDE .................................... 42.00 [1066.8]
UNIT AND UNGROUNDED
SURFACES, POWER ENTRY SIDE ...36.00 [914.0]
UNIT AND BLOCK OR CONCRETE WALLS AND OTHER
GROUNDED SURFACES, POWER ENTRY SIDE ......................... 42.00 [1066.8]
[5
61_
RIGHT SIDE VIEW
Fig. 3_50GL042-060
C00065
Unit Dimensions
UNIT WEIGHT
Ib
kg
UNIT HEIGHT
IN, [MM]
"A"
X
CENTER OF GRAVITY
IN. [MM]
Y
50GL042
208/230-1_o0,
208/230-3-60.
460-3-60
321
146
38.98 [990.2]
20.5 [520.7]
16.8 [425.5]
16.6 [421,6 I
50GL048
20_-230-1,.60,
208/230-3_0,
460.-3-60
326
148
38.98 [990.2}
19.5 [495.3]
17.6 [447.6]
18.0 [487.2]
50GL060
208F230-1-60,
208/230-3-60,
460-3-60
399
181
42.98 [1091.1]
20.5 [520.7]
16.2 [412.8]
17.6 [447.0]
UNIT
ELECTRICAL
CHARACTERISTICS
3
Z
The power supply
specified
(volts,
on unit rating
The electrical
handle
supply
provided
load imposed
This installation
NEC (National
Z223.1
applicable
Approved
and NFGC
for outdoor
those
GENERAL-
codes
be sufficient
with counter
codes.
to
or w_ste water
codes
on wood flooring
vertical
unit, the return
and other
with applicable
or on class
requirements
The
50GL
All unit
and downflow
permit.
units
installation
sizes
instructions
are fully self-contained,
(See
have discharge
openings
and are facto_
IDENTIFY
be ducted
be insulated
is used on a
through the roof deck to
A minimum
Cabinet
applicable
clearance
return-air
static
is not
shall
not
Clearances
minimum
operating
and service
ventilation
clearances
are shown
and condenser
air must be
as a
and de-
compressor
life.
for both
The
shipped
condenser
discharges
Units may be installed either on
slab, or directly on the _a'ound if
fan
it
draws
through
air
the
through
top fan
the
grill.
condenser
Be
sure
coil
and
the
fan
that
discharge does not recircalate to the condenser
coil. Do not locate
the unit in either a corner or under an overhead obstruction.
The
AND INSTALLATION
house
clearance
Rigging
reasons
the
or flood
top.
as a normal
The
maximum
must not exceed
ice, or snow
the unit.
tile. or other combustible
and Place
(such
unit
overhang
the unit where water,
Step S--Rig
INSPECT SHIPMENT -- Inspect for shipping damage while unit
is still on shipping pallet. If unit appears to be damaged or is torn
loose from its anchorage, have it examined by transportation
inspectors before removal. Forward claim papers directly to
transportation company. Manufacturer is not responsible for any
damage incurred in transit. Check all items against shipping fist.
Immediately notify the nearest Carrier Air Conditioning office if
any item is missing. To prevent loss or damage, leave all parts in
original packages until installation.
overhang
above
of a partial
or roof will damage
carpeting,
a partial
is 36-in.
extension
Do not place
unit model number and serial number
under
overhang)
horizontal
are stamped on unit identification plate. Check this information
against shipping papers and job data.
Step 2--Provide
with
provided.
Equipment
UNIT--The
ductwork.
4_Provide
minimum
Step 1--Check
in accordance
fire codes.
Insulate
and roof openings
residen-
See Fig. 4 for roof curb dimensions.
RECEIVING
should
in Fig. 2 and 3. Adequate
Fig. 1). See Fig. 2 and 3 for
configurations,
covered.
cement
these
to the flanges.
joints,
-.25 in. wg.
The required
to
and safety codes. In some instances,
certain
local codes and ordinances,
require
around
exceed
A.
and conform
be secured
ductwork,
and mastic
comply
Step
minimum
flashing
Refer
Fuel Gas Code).
should
all external
Ducts passing through an unconditioned
space must
and covered with a vapor barrier. If a plenum return
and with
54/ANSI
that may not have kept up with changing
with all duct openings
a rooftop, ground-level
local
(National
installation
cover
dimensions.
horizontal
must
materials.
standards
exceed
for outdoor
All ductwork
required
tial construction
practices.
We
minimum
for a safe installation.
unit
by the utility
and local plumbing
instructions
signed
openings.
local codes.
existing national
these
instructions
especially
to that
and weatherproof
must conform with local building codes
Electrical
Code) and NFPA 70. NFPA
B or C roof covering
These
and hertz) must correspond
by this unit.
latest revision,
to provincial
phase,
plate.
48 in.
from an overhang
Do not install
the unit on
materials.
Unit
and handling of this equipment
due to the installation
location
can be hazardous
for many
(roofs, elevated structures,
etc.)
Only
trained,
qualified
should
handle
When
working
literature,
Follow
ROOF CURB -- Install accessory roof curb in accordance with
instructions shipped with curb (See Fig. 4 for roof curb dimensions). Install insulation, cant strips, roofing, and flashing. Ductwork must be attached to curb.
with
on tags,
and any other
Unit Support
crane
operators
and ground
support
staff
and install this equipment.
this equipment,
stickers
safety
and labels
precautions
all applicable
safety
observe
precautions
attached
to the equipment,
in the
that might apply.
codes.
Wear
safety
shoes
and work
gloves.
INSPECTION
rigging
damage,
IMPORTANT: The gasketing of the unit to the roof curb is critical
for a watertight seal. Install gasketing material supplied with the
roof curb. Improperly applied gasketing can also result in air leaks
and poor unit performance. Curb should be level to within 1/4 in.
(See Fig. 6). This is necessary for unit drain to function properly.
Refer to accessory roof curb installation instructions for additional
information as required.
Prior to initial
and straps
evidence
Particular
booking
--
brackets
of
attention
points
wear,
should
be visually
structural
be
and load support
any kind of wear
discarded.
use, and at monthly
should
in these areas
paid
intervals,
inspected
deformation,
to excessive
areas. Brackets
or
all
for any
cracks.
wear
at hoist
or straps
showing
must not be used
and should
be
INSTALLATION
1. Remove
the unit
SLAB MOUNT-Place the unit on a solid, level concrete pad
that is a minimum of 4 in. thick with 2 in. above grade. The slab
should extend 2 in. on sides of the unit. Do not secure the unit to
the slab except when required by local codes.
unit from shipping carton. Leave top shipping skid on
as a spreader bar to prevent the rigging straps from
damaging
spreader
2. Position
the unit.
If the wood
bar of sufficient
the lifting
unit. Be sure
bracket
the strap does
GROUND LEVEL-If local codes permit, the unit can be placed
directly on the ground. Prepare a level gravel foundation for proper
drainage.
3. Place each
Step 3_Field
4. Thread lifting bracket
unit as follows:
Secure all ducts to roof curb and building structure on vertical
discharge units. Do not connect duct_vork to unit. For horizontal
applications, unit is provided with flanges on the horizontal
4
skid
is not available,
to protect
assembly
use a
unit from damage.
around
the base of the
not twist.
of the 4 metal lifting brackets
the composite
Fabricate Ductwork
length
into the handholds
in
around
bottom
of
(ratchet
type).
pan.
a. Open
lever
b. Feed
strapping
strapping
of tension
through
buckle
tension
buckle
(See
perimeter
Fig. 8).
463/16
44 5/16
A
SUPPORTA(2)
1
SIDE
- (2)
END VIEW
END
(2)
DECK PAN (INSULATED)
A99320
SIDE PANEL--
T
3.0"
SUPPORT RIB(S)
BASE PAN
BOTTOM SUPPLY
4.0"
0.75' --{[/
SEAL STRIP
(FACTORY SUPPLIED)
COUNTER
FLASHING
-
=
(FIELD SUPPLIED)
NAILER
•
ROOFING FELT
(FIELD SUPPLIED)
_INSULATION
CANT STRIP -(FIELD SUPPLIED)
(FIELD SUPPLIED)
ROOFING MATERIAL
(FIELD SUPPLIED)
A99340
50GL
UNIT SIZE
024-036
ROOF CURB
042-060
ODS CATALOG
ORDERING
NO.
A
IN. [MM]
B
IN, [MM]
C
IN. [MM]
D
IN, [MM]
CPRFCURB006A00
8 1203]
11-27/32 [301]
30-5/8 [T78]
28-3/4 [7301
CPRFCURB007A00
14 [356]
11-27/'32 [30t]
30-5/8 [778]
28-3/4 [730|
CPRFCURB008A00
8 [203]
15-27/32 [402]
42-1/8 [1070]
40-1/4 [1022]
14 [356]
15-27/'32 [402]
42-1/8 [1070]
40-1/4 [1022]
CPRFCURBOO£'A00
NOTES:
1. Roof curb must be set up for unit being installed.
2. Seal strip must be applied as required to unit being installed.
3. Dimensions in I ) are in millimeters.
4. Roof curb is made of 16 gage steel.
5. Table lists only the dirnensio_s per DOS Catalog Ordering Number
6. Attach ductwork to curb (flanges of duct rest on curb).
7. Insulated panels: 1-in. thick fiberglass 1 Ib density,
that have changed.
Fig. &--Roof
Curb Dimensions
5
RETURN
AIR
OPENING
SUppLY
AIR
OPENING
/ A°OHOLO
III
illl
IIII
F II
I II
_N
H
3____%
HOOK
2--_
FEED _
I
1
_
EVAP COiL
COND
e99087
C_L
C99014
Fig. 5--Slab
Fig. 8_Belt
Mounting Details
Threading
DUCTS
5_AL STRIp MUST BE iN
PLACE BEFORE p_ACING
UNfT C_ ROOF CURB
j{48
_8")
CETAIL A
SCALE 025O
pLACE RIGGING STRAPS IN
BASEPAN
SLOT (BELOW HANDHOLDS)
BEFORE RK3GING
C99015
Fig. 6_Suggested
MAXIMUM
SIZE
WEIGHT
Rigging
A
B
024
Ib
292
kg
132.5
in.
18.5
rnm
469,9
in.
14.50
rnm
3683
030
313
142.5
19.5
4953
15.50
393.7
036
321
145.6
19.5
495.3
15.25
387.4
042
343
155.6
203
520.7
15,75
425.5
048
348
157.9
19,5
405.3
17.62
447.8
060
421
191.0
20.5
520.7
16.25
412.8
/SE
P_ND HOLES AND INSTALL lie DOWN STRAp
AP_JN D PERIMETER OF UNIT AND THROUGH
_ACE IN BRACKET ASSEMBLY
E DETAIL A
C99066
Fig. 9---Lifting Point
8. Position
lifting point directly
9. Lift unit. When
2 safety
unit is directly
straps.
Lower
Step 6---Connect
NOTE:
When
comply
B
A-B
B-C
A-C
1/4
1/4
1/4
c. Pull strapping
d. Snap
through
lever down
strapping,
outward.
squeeze
tension
buckle
exits through the base on the evaporator
1o lock strap in tension
safety
latch,
buckle.
lift lever, and pull webbing
it is taut. Lifting
Condensate
water
installations
(where
the 2 safety
brackets.
lifting brackeLs
can be drained
permitted)
(See
straps
directly
DO NOT
Fig. 9).
brackets
strength
directly
Install a field-supplied
connection
to ensure
connection
using
to prevent
a gravel
the safety
straps
at the
to the
coil access
proper
onto the roof in rooftop
a gravel
apron
condensate
drainage,
1 in. lower
in ground-
trap at end of
Make
sure that
than the drainpan
the pan from overflowing
apron,
make
sure it slopes
(See
away
Connect a drain tube using a minimum
of 3/4 -in. PVC or 3/4 -in.
copper pipe (all field-supplied)
at the outlet end of the 2-in. trap.
Do not undersize
the tube. Pitch the drain tube downward
at a
10 fi of horizontal
run. Be sure
to check the drain tube for leaks. Prime trap at the beginning
of the
sea.son start-up.
Step 7--Install
Duct Connections
The unit has duct flanges
to the clevis or hook
attach
to
water through a 3/4 in. NPT
or onto
of the trap is at least
condensate
cooling
6. Attach field-supplied
clevis or hook of sufficient
hole in the lifting bracket (See Fig. 9).
4 rigging
of condensate
slope of at lemst one in. for every
5. Tighten
the tension
buckle until
must be secure in the handholds.
7. Attach
To release
be sure to
Fig. 2 and 3 for location).
Fig. 10). When
from the unit.
unit taut.
connection
disposes
which
condensate
L;9_6b
drain
and restrictions.
fining
level installations.
Leveling Tolerances
Drain
condensate
codes
the
onto the roof curb.
Model 50GL
the outlet
Fig. 7--Unit
installing
center of gravity.
over the roof curb, remove
the equipment
Condensate
with local
side (See
MAXIMUM ALLOWABLE
DIFFERENCE/in.)
over the unit's
on the supply-
and return-air
openings
on
the side and bottom of the unit. For downshot
applications
the
ductwork can be connected to the roof curb ISee Pig. 2 and 3 for
connection
sizes
and locations).
Table 1--Physical
UNIT SIZE
NOMINAL
CAPACITY
OPERATING
Data -- Unit 50GL
O24
030
036
042
048
06O
(ton)
2
(Ib)
27O
2-1/2
291
3
299
3-1/2
321
4
326
399
WEIGHT
SCrOll
COMPRESSOR
REFRIGERANT
Quantity
5
50 I ,5 I 00 I ,0 r g5
(R-410A)
(Ib)
REFRIGERANT
METERING
Orifice ID (in.)
10.0
Accurater_ Piston
DEVICE
.057
.057
.065
070
,073
.086
1...17
10.9
1,.,17
12.7
2...17
9.1
2,..17
12.3
2,..17
12.3
2...17
16.4
2350
22
1/8 (825)
2350
22
1/8 (825)
2350
22
1/8 (825)
2350
22
1/8 (825)
3300
22
1/4 (1100)
3300
22
1/4 (1100)
EVAPORATOR COIL
Rows...Fins/in.
Face Area (sq ft)
3...15
3,7
3...15
3.7
3..,15
3.7
3...15
4.7
4,-15
4.7
4...15
4.7
EVAPORATOR
BLOWER
Nominal Airflow (Cfm)
Size (in.)
Motor (hp)
800
10x10
1/4
1000
10x10
1/4
1200
10xi0
1/2
1400
11x10
3#4
1600
11x10
3/4
1750
1ix10
1
CONDENSER COIL
Rows...Fins/in.
Face Area (sq R)
CONDENSER FAN
Nominal Cfm
Diameter (in.)
Motor Hp (Rpm)
HIGH-PRESSURE
SWITCH
Cutout
Reset (Auto)
LOSS-OF-CHARGE/LOW-PRESSU
(Liquid Line) (psig)
Cutom
Reset (Auto)
RETURN-AIR
Throwaway
FILTERS
(psig)
610 _+15
420+_25
RE SWITCH
20_+5
45+10
x ,!2ox o×,12o 4xl12OX3OXl124x
124x OX
(in.)*
• Requiredfilter sizes shown are based on the largerofthe ARI (Air CondiUoning and RefrigerationInstitute) rated cooling airflowor the heatingairflowvelocity of 300
ftJmin for throwaway type or 450 ft/min for high-capacity type. Airfilter pressure drop for ncn-standardfilters must not exceed 0.08 in. wg.
1" MIN.
2. Remove
side duct covers
knock out covers
(See
to access
bottom
return
and supply
Fig. 12).
TRAP
oo,,E,
÷
2" MIN.
3. To remove supply and return duct covers, break front and right
side connecting
tabs with a screwdriver
and a hammer. Push
cover down to break rear and left side tabs.
4. If unit ductwork
C99013
Fig. 10--Condensate
IMPORTANT:
Use flexible
unit
transmission
to prevent
ensure
weathertight
installed,
and
connectors
airtight
seal.
resistant
from
duct connector
When
flanges
and
to
perimeter
heat
is
basepan
electric
heat resistant material)
sleeve)
must extend
24-in.
into the ductwork.
Operation
(Cfm)
0,41000
o 1o42
1000
CONFIGURING
CHARGE
'
UNITS
1200
FOR
1400
DOWNFLOW
6. Cover
both
shipped
the
tape.
horizontal
duct
local
exposed
openings
around
be secured
Applicable
tape to prevent
the
to the
codes
may
fiberglass.
with
the duct
Ensure opening
covers
is air-and
unit
conversion,
perform
all safety
checks
up unit.
o
1600
2000
(VERTICAL)
DIS-
nonresidence-type
air conditioning
90A or residence-type,
ordinances.
Adhere
to the
9. Use
result.
following
any service
90B:
criteria
and/or
when
systems,
local
selecting,
NFPA
codes
and
sizing,
and
the duct system:
and size ductwork,
according
flexible
prevent
starting
and ventilating
NFPA
supply-air
to American
tion and Air Conditioning
dations.
before
to the roof may occur.
insulation
return-air opening
aluminum
completing
and power
installing
disconnects
flanges
watertight.
grilles
all electrical
damage
hasepan
on the unit from the factory.
8. Select
1. Open
work.
opening
NOTE:
The design and installation
of the duct system must be in
accordance
with the standards
of the NFPA for installation
of
SIZE
800
that
require aluminum
7. After
Table 2 -- Minimum Airflow for Safe Electric Heater
as permanent
of the vertical
with
to vertical
(jackstand
applications
only), do so at this
screws that were removed. Do not leave
5. It is recommended
gaskets
unit discharge
connection.
If
metal sleeve inside duct. Heat
(or sheet metal
the unit connections
ductwork
Use suitable
(or similar
connector
between
ductwork
and
flexible duct is used, insert a sheet
screws on rooftop
between
of vibration.
use fire proof canvas
Trap
is to be attached
on the unit basepan
time. Collect ALL
screwed
ensure
transition
transmission
or bolted
weathertight
Society
Engineers
between
of
to duct
and return-air
of Heating,
(ASHRAE)
rigid ductwork
vibration.
flanges.
and airtight
registers,
seal.
The
Refrigerarecommen-
and unit
transition
Use suitable
to
may
be
gaskets
to
10.All unitsmust
havefield-supplied
filters or accessory
filter
rack installed in the return-air
side of the unit. Recommended
sizes for filters are shown in Table 1.
Step 8--Install
Electrical Connections
Y:I |*?I:ITR]R [_
11. Size
all
heating
size
ductwork
for
or cooling)
increases
maximum
for unit being
or decreases
required
installed.
or performance
airflow
Avoid
(either
abrupt
duct
The
may he affected.
injury
12. Adequately
insulate
outdoors.
Insulate
and use vapor
Metal
and
ducts
barrier
weatherproof
passing
through
in accordance
and Air Conditioning
all ductwork
located
unconditioned
space,
with latest
Contractors
issue of Sheet
National
unit
elecWical
Association
cabinet
must
ground
to minimize
if an electrical
ground
when
installed
Code)
(SMACNA)
and Air Conditioning
Contractors
of America
(ACCA)
minimum
installation
standards
for heating and air
Canadian
Electrical
conditioning
this warning
13. Flash,
weatherprooL
building
structure
building
practices.
Secure
and
all ducts
to building
vibration-isolate
in accordance
with local
all
structure.
openings
codes
fault
an
uninterrupted,
the
possibility
should
occur.
consist of an electrical wire connected
in the control compartment,
or conduit
Electrical
systems.
have
tion]
C22.1)
NFPA
Code
could
with
(latest
result
may
(National
(in Canada,
Standards
codes.
in personal
NEC
editionl
CSA [Canadian
and local electrical
This ground
to the unit ground lug
approved for electrical
in accordance
ANSI/
unbroken
of personal
Failure
injury
Associa-
to adhere
to
or death.
in
and good
W_P_.TLI__d
[o]Ti
Failure to follow these precautions
the unit being installed:
1. Make all electrical connections
ANSI/NFPA(Iatest
edition)
could
to
result in damage
in accordance
with NEC
and local electrical
codes
gov-
erning such wiring. In Canada. all electrical connections
must be in accordance
with CSA standard C22.1 Canadian
Electrical
Code
unit wiring
2. Use only
Iu
7
SUPPLY
DUCT
OPENING
i
!/
RETURN
DUCT
OPENING
C99011
Fig. 11---_upply
and Return Duct Opening
Part l and applicable
diagram.
copper
conductor
field-supplied
electrical
NOT USE ALUMINUM
3. Be sure that high-voltage
voltage range indicated
for
disconnect
WIRE,
local codes.
Refer to
connections
switch
between
and unit.
power to unit is within
on unit rating plate.
operating
4. Do not damage internal components
when drilling
any panel to mount electrical
hardware,
conduit,
3-phase
units,
Consult
local power
ensure
company
voltage
and/or
imbalance.
phase
phases
are
balanced
for correction
DO
through
etc. On
within
2%.
of improper
HIGH-VOLTAGE
CONNECTIONSThe unit must have a
separate electrical service with a field-supplied, water-proof,
disconnect switch mounted at, or within sight from, the unit. Refer
to the unit rating plate for maximum fuse/circuit breaker size and
minimum circuit amps (ampacity) for wire sizing (See Table 3 for
electrical data).
The field-supplied disconnect switch box may be mounted on the
unit over the high-voltage inlet hole when the standard power and
low-voltage entry points are used (See Fig. 2 and 3 for acceptable
location).
See unit wiring label and Fig. 13 for reference when making high
voltage connections. Proceed as follows to complete the highvoltage connections to the unit.
Single phase units:
1. Run the high-voltage
control box.
(LI, L2) and ground leads into the
2. Connect ground lead to chassis ground connection.
3. Connect LI to pressure lug connection
contactor.
11 of the compressor
4. Connect L2 to pressure lug connection 23 of the compressor
contactor.
Three phase units:
1. Run the high-voltage (LI, L2, L3) and ground leads into the
control box.
VERTICAL DUCT COVERS
C99012
Fig. 12--Vertical
Duct Cover Removed
2. Connect ground lead to chassis ground connection.
3. Locate the black and yellow wires connected to the lines side
of the contactor.
Table 3--Electrical
UNIT 50GL
SIZE
O24
V-PH-HZ
VOLTAGE
RANGE
Min
Max
COMPRESSOR
RLA
LRA
OFM
IFM
ELECTRIC
FLA
FLA
Nominal kW*
MCA
Max Fuse or CRCT Breaker
-/18.1/20.8
36.1/41.7
19.7/19.7
25.1/28.5
47.6/54.6
25/25
25/30
50/60
137
253
13.5
61 .O
0.8
2.0
208/230-1-60
187
253
14.7
73.0
0.6
2.1
-/.
3.8/5.0
7.5/100
*/18.1/20.8
36.1/41.7
21 3/21.3
25.2/28.7
478/5.47
25/25
25/30
50/60
-/-
206/230-3-60
187
253
9.6
63.0
0.8
2.1
3.8/5.0
7.5/10.0
-/10.4/12.0
20.8/24.1
14,9/14.9
15.7/17.7
28.7/32.7
20/20
20/20
30/35
208/230-1-60
187
253
15.4
83.0
0.8
3.6
./3.8/5.0
7.5/10.0
11.3/15,6
-/*
18.1/20.8
36.1/41.7
54.2/62.5
23.7/23.7
27.1/30.5
49,6/56.6
72.2/82.6
30/30
30/30
50/60
-/3.8/5.0
7.5/10.0
11.3/15.0
-/10.4/12.0
20.8/24.1
31.3/36.1
19,7/19.7
19,7/19.7
30.6/34.6
43,6/49.6
25/25
25/25
35/35
45/50
5.0
10.0
15.0
6.0
12.0
16.0
9.1
9.9
17.4
24.9
16
15
20
25
-/3.8/5.0
7.5/10,0
11.3/15.0
15.0/20.0
-/18.1/20.8
36.1/41.7
54.2/62.5
72.2/85.3
28.2/28.2
28.2/31.2
50.3/57.2
72.8/83,3
95.4/109.3
35/35
35/35
60/60
-/3.8/5.0
7.5/10.0
11.3/15.0
15.6/20.0
-/10.4/12.0
20.6/24.1
31.3/36.1
41.6/48.0
22.2/22.2
22.2/22.2
31.2/35.2
44.2/50.2
57.1/65.1
30/30
30/30
35/40
46/60
5.0
10.0
15.0
20.0
6.0
12.0
18.0
24.1
10.7
10.7
17.5
25.1
32.6
15
15
20
30
35
*/*
18.1/20.8
36.1/41.7
54.2/62.5
72.2/83.3
31.3/31,3
31.3/31.3
50.3/57.2
72,8/83.3
95.4/109.3
40140
40/40
60/60
3.8/5.0
7.5/16.0
11.3/15.0
15.0/20.0
-/10.4/12.0
20.6/24.1
31.3/36.1
4t.7/48.1
24.1/24.1
24.1/24.1
31.2/35.2
44.2/50,2
57.1/65.1
30/30
30/30
35/40
45/60
2.0
5.0
10.0
15.0
20.0
6.0
12.0
18.0
24.1
11.0
11.0
17.5
25.1
32.6
15
15
20
30
35
6.2
-/3.8/8.0
7.5/10.0
11.3/15
15.6/20.0
-/18.1/20.8
36.1/41.7
54.2/62.5
72.2/83.3
42.3/42.3
42.3/42.3
52,g/89.6
75.4/85.9
98.0/111.9
50/50
50/50
60/60
-/-
-/10.4/12.0
20.8/24.1
31.3/36.1
41.6/48.0
30.4/30.4
30.4/30.4
33.8/37.8
46,6/52.9
59.7/67.7
35/35
35/35
36/40
50/60
6.0
12.0
18.0
24.1
15.4
15.4
19.0
26.6
34.1
20
20
20
30
35
208/230-3-60
187
253
12.2
77.0
0.8
3.6
460-3-60
414
506
5.1
35.0
0.8
1.9
206/230-3-60
460-3_0
187
187
414
253
253
506
18.6
13.8
6.3
105.0
88.6
39.0
1.6
1.6
0.9
4,1
4.1
2.0
-/-
208-230-1-60
187
253
20.5
109.0
1.6
4.1
3.8/5.0
7.5/10.0
1 t .3/15.0
15.0/20.0
-/-
O48
208/230-3-60
460-3-60
206/230-1-60
06O
FLA
POWER SUPPLY
206/230-1-60
206/230-1-60
042
HEAT
-/3.8/5.0
7.5/10.0
03O
036
Data
208/330-3-60
187
414
187
187
253
506
253
253
14.7
6.5
27.6
18.1
91.6
46.0
158.0
137.0
1.6
0.9
1.6
1.6
4.1
6.2
3.8/5.0
7.5/10.0
11.3/15.0
15.0/20.0
5.0
460-3-60
414
506
9.0
62.0
0.9
3.2
10,0
15.0
20.0
• Heater cap_city (KW) based on heater voltage of 206v, 240v, & 480v. If power distribution
accordingly.
MOCP
80/90
80/90
100/110
60/70
80/90
100/110
60/70
°
80/90
100/125
60/70
voltage to unit varies from rated heater voltage, heater KW will vary
EXAMPLE: Supply voltage is 460-3-60.
A e C
AB = 452 v
FLA
LRA
MCA
MOCP
RLA
------
AC = 455 v
Full Load Amps
LockedLEGEND
RotorAmps
C
Minimum Cimuit Amps
Maximum Overcurrent Protection
Rated Load Amps
US
Average Voltage = 452 + 464 + 455
3
BC = 464 v
= 1371
3
= 457
NOTES:
1. In compliance with NEC (National Electrical Code) requirements
for multimotor and combination load equipment (refer to NEC
Articles 430 and 440), the overcurrent protective device for the
unit shall be Power Supply
fuse. The CGA (Canadian Gas
Association) units may be fuse or circuit breaker.
2. Minimum wire size is based on 60 C copper wire. If other than
60 C wire is used, or if length exceeds wire length in table,
determine size from NEC.
3. 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.
Determine maximum deviation from average voltage.
(AB) 457 452=5v
(BC) 464 457--7v
(AC) 457 455=2v
Maximum deviation is 7 v.
Determine
% Voltage Imbalance = 100 x
7
457
= 1.53%
This amount of phase imbalance
maximum allowable 2%.
% Voltage imbalance
= 100 x
percent of voltage imbalance.
max voltage deviation from avera_le voifa_e
average voltage
is satisfactory as it is below the
IMPORTANT:
If the supply voltage phase imbalance
is
more than 2%, contact your local electric utility company
immediately.
4. Connect
field
compressor
5. Connect
to black
wire
field wire L2 to yellow
compressor
6. Connect
SPECIAL
LI
on
connection
11 of
the
CONTROL
contactor.
wire on connection
wire L3 to Blue wire from
PROCEDURES
FOR
208-V
CONNECTIONS
NOTE: Do not use any type of power-stealing
control problems may result.
13 of the
contactor.
field
VOLTAGE
I
thermostat.
Unit
Use no. 18 American Wire Gage (AWG) color-coded, insulated
(35 C minimum) wires to make the control voltage connections
between the thermostat and the unit. If the thermostat is located
compressor.
OPERATION
more than 100 ft from the unit _,as measured along the control
voltage wires), use no. 16 AWG color-coded, insulated 135 C
minimum) wires.
Make
before
open,
marked
sure that the power
making
move
serious
yellow
voltage
injury
to the unit is switched
changes.
wire from
230 to terminal
to primary
supply
any wiring
With
transformer
marked
disconnect
(3/16
shock
STANDARD CONNECTION -- Remove knockout hole located
in the electric heat panel adjacent to the service access panel (See
Fig. 2 and 31. Remove the rubber _ommet from the installer's
packet (included with unit) and install _ommet in the knockout
opening. Provide a drip loop before running wire through panel.
in.) terminal
200. This retaps
of 208 vac. Electrical
OFF
switch
transformer
could
cause
or death.
Run the low-voltage leads from the thermostat, through the inlet
hole. and into unit low-voltage splice box.
m
HIGH VOLTAGE
r'-
POWER
LEADS
o(SEE UNIT
WIRING <_c
LABEL)
_..
-
-
-
- -
-
-
-
-
- -
POWER
-
SUPPLY
Locate five 18-gage wires leaving control box. These low-voltage
connection leads can be identified by the colors red, green, yellow.
brown, and white (See Fig. 10). Ensure the leads are long enough
to be routed into the low-voltage splice box (located below right
side of control box). Stripped yellow wire is located in connection
box. Route leads through hole in bottom of control box and make
low-voltage connections (See Fig. 13). Secure all cut wires, so that
they do not interfere with operation of unit.
- -_- FIELD-SUPPLIED
FUSED DISCONNECT
GND
TRANSFORMER PROTECTIONThe transformer is of the
energy-limiting type. It is set to withstand a 30-sec overload or
shorted secondary condition.
CONTROLBOX
C- -YE--LLYL{)" --_)
LOW-VOLTAGE
POWER LF_,DS-(SEE UNIT
{_. _)
O- _G_RN_(G_)
_
O-
WIRING LABEL)
_o-
RED2R2D-BEN--(C--)
D- (_)
"_L
J
_T_ERMAOL_
TAT
SPLICEBOX
LEGEND
Field Control-Voltage Wiring
Field High-Voltage Widng
NOTE: Use blue wire for 3-phase
Fig. l_-High-
units only.
and Control-Voltage
C99010
Connections
10
PRE-START-UP
Failure
to observe
serious
injury
I. Follow
the following
recognized
goggles
safety
when checking
2. Do not operate
unit unless
secured.
warnings
practices
and
or servicing
compressor
or provide
compressor
terminal
cover
is
from
and recover
all refrigerant
sides of system
inside terminal
compressor
system.
in place
1/8" MAX BETWEEN
MOTOR AND FAN HUB
to
both
C99009
box if refrigerant
high
1. Locate
and
wear
protective
system
pressure
ha._
from both high- and low-pressure
2. Repair leak following accepted practices.
NOTE: Replace filter drier whenever the system has been opened
for repair.
while
refrig-
3. Charge
and proceed
unit
with
R_.IOA
refrigerant,
charging cylinder or accurate
for required charge.
as fol-
START
UP
COOLING
scale.
using
a volumetric-
Refer to unit rating plate
SECTION
AND
MAKE
ADJUST-
MENTS
power
and reclaim
component
d. Carefully
and reclaimed
leak is suspected
connection
goggles
Blade Clearance
leak and make sure that refrigerant
been relieved
ports.
or disturbing
to unit.
all refrigerant
from
system
both high- and low-pressure
ports.
c. Cut component
connecting
tubing with tubing
remove
MOTOR SHAFT
and
terminals.
off electrical
b. Relieve
sary.
power
use torch to remove
any component.
System
oil and refrigerant
under pressure.
To remove a
component,
lows:
a. Shut
protective
until all electri-
before touching
5. Never attempt to repair soldered
erant system is under pressure.
6. Do not
contains
in
Fig. 14_Fan
4. Relieve
around
result
any electric
cover
anything
wear
refrigerant
3. Do not remove compressor
terminal
cal sources are disconnected.
low-pressure
could
or death:
unsweat
Oil can ignite
from
F:_[O211F/I,171
using
Complete
cutter and
unit.
remaining
tubing
when exposed
stubs
to torch
when neces-
before
devices
when operating
sor
flame.
the required
section
when
the
accessory
Proceed as follows to inspect
startup:
and prepare
the unit for initi;
t. Remove access panel.
CHECKING
check
room
2. Place
b. Inspect for oil at all refrigerant tubing connections and c
unit base. Detecting oil generally indicates a refrigeraJ
leak. Leak test all refrigerant tubing connections usin
electronic leak detector, halide torch, or liquid-soap solt
tion. If a refrigerant leak is detected, see Check f_
Refrigerant Leaks section under Start-Up.
between
cooling
thermostat
in ON position
AUTO
the compres40°F
is below
switch
position.
that
blower
and
as follows:
in OFF
position.
switch
is placed
when FAN
when FAN switch
in COOL
Set cooling
compressor,
motors
start.
position
control
is placed
in
and FAN switch
in
3. When
and FAN switches
unit operates
to "call
for heating"
in cooling
cooling"
in heating
(below
The
(above
and
evaporator
cycle
shuts
thermostat,
positions.
down
fan
place
Observe
will
both
that
when temperature
control
room
and operates
temperature
room
temperature.
evaporator
room
in AUTO
mode
mode when
fan,
that cooling
using an auto-changeover
SYSTEM
below room
condenser
Observe
when control setting is satisfied.
continue to run for 30 sec.
Verify the following conditions:
operation
switch
starts
and shuts down
SYSTEM
Observe
d. Inspect coil fins. If damaged during shipping and handlir
carefully straighten fins with a fin comb.
the
to prevent
position.
AUTO
Be stu
cycles
OPERATION--Start
control
SYSTEM
motor
(unless
Do not rapid-cycle
"on"
CONTROL
that blower
Up
any safety
temperature
kit is installed).
COOLING
in the Pre-Start-
Do not jumper
the unit. Do not operate
Allow 5 rain
damage.
Observe
a. Inspect for shipping and handling damages such as broke
lines, loose parts, disconnected wires, etc.
c. Inspect all field- and factory-wiring connections.
that connections are completed and tight.
outdoor
the unit for proper
1. Place
3. Make the following inspections:
given
the unit.
Iow-anrbient
compressor.
compressor
2. Read and follow instructions on all WARNING, CAUTIOI'
and INFORMATION labels attached to, or shipped with, uni
procedures
starting
temperature)
control
is set to "call
is set
for
temperature).
IMPORTANT:
Three-phase,
scroll compressor
units (50GL030060) are direction-oriented.
These units must be checked to ensure
a. Make sure that condenser-fan blade is correctly position.
in fan orifice. Leading edge of condenser-fan blade shoul
be 1/2 in. maximum from fan orifice (See Fig. 14).
proper
compressor
within
5 rain. the internal
3-phase
power
lead orientation.
protector
If not corrected
will shut off the compressor.
b. Mal_e sure that air filter(s) is in place.
Any
c. Make sure that condensate drain trap is filled with water I
ensure proper drainage.
to correct rotation. When turning
backwards,
scroll compressors
emit elevated noise levels, and the difference
between compressor
two of the 3-phase
suction
normal.
d. Make sure that all tools and miscellaneous loose parts ha',
been
remove,
and discharge
CHECKING
--The
START-UP
CHECK FOR REFRIGERANT LEAKS -- Proceed as follows t
locate and repair a refrigerant leak and to charge the unit:
ant, tested,
NOTE:
11
unless
AND
refrigerant
leads
pressures
to the unit must be reversed
may
ADJUSTING
system
be dramatically
lower
REFRIGERANT
is fully charged
than
CHARGE
with R_.IOA
refriger-
and factory-sealed.
Adjustment
the
power
unit
of
the
is suspected
charge. The charging
label
temperatures
and pressures.
refrigerant
of
not
charge
having
and the tables
not
required
the proper
R_-IOA
shown
is
refer to system
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IMPORTANT:
cated
When
adjustment
very minimal.
evaluating
to the specified
If a substantial
must
charge
is indicated,
an indialways
be
an abnormal
in the cooling system,
coil or both coils.
such as insuf
of refrigerant
charge
Refer to the Refrigeration
ants section.
panels
charging
must
is listed
Service
be in place
Techniques
when
Manual.
parts.
unit
is operating
during
speed
for
evacuating
techniques.
amount
After
of refrigerant
evacuating
(refer
system.
to system
the
Measure
outdoor
ambient
refrigerant
using
Cooling
Charging
until the conditions
charts
Charts
are based
on charging
the units
to correct
various
operating
conditions.
Accurate
pressure
service
device
data
does
not effect
the normal
To use cooling
Take
are required.
from
Connect
(Figs.
the
charging
gage.
temperature
NOTE:
should
refrigerant
type normally
red = tow
superheat
Indoor
must
AIRFLOW
to determine
causing
to Check
AND
jumper
lead male quick
the
what
the
inaccurate
the
for Refrigerant
AIRFLOW
connect
The
is a
section.
The
setting
the circuit
between
completed
(outdoor)
open
across
(OFM).
again
3-SPEED
"on"
motor
attached
speed
to
the speed
circuits
deenergize
contactor
and compressor
leg
terminal
lead
from
BM
for
the
motor
blower
NOTE
single-phase
(BM).
relay
and
ensure
as follows:
remove
(BR).
3-phase
This
about
the fan
wire
units.
motors
coil
of
(C) close and
(COMP)
to con-
start instantly.
of energized
relay
blower
TDR
close
(indoor)
fan
and then has stopped,
until the room temperature
the cooling
control
R to terminals
it
coil
motors
C
and
drops
setting
"breaks"
of the
the circuit
Y and G. These
relay
stop. After
coil
The
delay,
condition,
from the room
open
TDR.
a 30-sec
stops. The unit is in a "standby"
continuing
high
of premature
troubleshoot
of the book.
red = low speed
of the blower
Both
relay
secondary
contactor
motor
Y
connect
the
waiting
thermostat.
performance,
equipment
and
failure,
to minimize
periodic
the
maintenance
must be performed
on this equipment.
This cooling unit should be
inspected
at least once each year by a qualified service person. To
black = high speed
red = low speed
24-v
At this point, the thermostat
terminal
possibility
blue = medium speed
To change
R to terminals
MAINTENANCE
2-SPEED
black = high speed
the
above
thermostat
Y) and blower
has started
below
thermostat
To
and may need to be
are color-coded
the
is
until 5 rain have elapsed.
between
motor
wire
G)
contacts
cycle remains
thermostat.
room
and the FAN
the thermostat
through evaporator
that is slightly
condenser
in the field.
leads
the
of operation
terminal
through
compressor
the compressor
Once
not be started
the
position
of energized
NOTE:
room
Airflow can be changed by changing the lead connections of the
blower motor.
or high speed
from
with any chassis
thermostat,
unit
through
the circuit
to point
Disconnect electrical power to the unit before changing
blower speed. Electrical shock can cause serious injury or
death.
-- The motor
is
the black lead
sequence
thermostat
wire
fan motor
set of normally
the
circuits
for the next "'call for cooling"
for medium
(QC)
OPERATION--With
of
and complete
motor (IFM).
blower
FOR 208/230-V
contact
the cooling
open contacts
the circuit
The cooling
NOTE: Be sure that all supply- and return-air grilles are open,
free from obstructions, and adjusted properly.
wired
lead
rises to a point that is slightly
control
normally
denser
ADJUSTMENTS
wired for low speed
speed
connect
in the COOL
coil (C) (through
complete
Table 4 shows cooling airflows at various external static pressures.
Refer to these tables to determine the airflow for the system being
installed.
units are factory
motor
high speed on 460-v GE
quick
to avoid
OF
switch
the room temperature
cooling
should
All 50GL
The
fan motor
with the lead
(QC) and connect
the jumper
(TDR)
(through
unit
transformer
(TRAN).
the suction
Leaks
remove
and replace
speed.
female
SEQUENCE
contactor
suction
readings
(BM),
(BR)
parts. To select
the black
SYSTEM
and G. These
read
motor
with chassis
separate
When
be
be.
problem
contact
completes
and
motor
relay
switch in the AUTO position,
as follows:
charts
temperature
blower
motors,
thermostat
gage to the
air CFM
desired
COOLING
for the
gage and tempera-
the pressure
the speed of the blower
parts.
used.
of the unit.
to the chart
leak, refer
INDOOR
range
ambient
Refer
If the
the reading.
operating
outdoor
pressure
orange = medium
red = low
to the BR. Insulate
are met.
port on the suction line. Mount the temperature
sensing
on the suction line and insulate
it so that the outdoor
ambient
within
devices
are different
Charts
of the chart
that charging
ture sensing
2-SPEED
as
attached
to terminal BM. For low and medium speeds black must
be connected
to the jumper
wire. Insulate
removed lead end to
cooling
Vary
leads are color coded
black = high
blue = jumper
lead from the blower
avoid
Low charge
The motor
3-SPEED
To change
in the specified
18-23).
GE MOTORS
black = high
violet = jumper
Refriger
plate).
Note
chassis
on the unit nameplate.
procedures.
standard
weigh
the speed, remove and replace with lead for desired blower
speed, b_sulate the removed
lead to avoid contact with
FOR 460-V
follows:
No charge
Use
change
motor
charge
The amount
Unit
charge,
factory
adjustment
condition
exists somewhere
ficient airflow across either
Refrigerant
the refrigerant
is
To
15
heating
or cooling
TO EQUIPMENT
the availability
of units,
OWNER:
of a maintenance
refer to tables
Consult
contract.
your
at the back
local
dealer
Table 4---Wet Coil Air Delivery (Deduct 10% for 208v)*
Horizontal and Downflow Discharge
Unit 50GL024-060
230 AND 460 VOLT
Unit
External
Motor Speed
Low
O24
Meal
High
LOW
3O
Med
High
Low
36
Med
High
Low
42
Med
High
Low
48
Med
High
Low
6O
Med
High
0.0
0.1
0.2
0.3
0.4
Watts
281
282
281
278
276
Cfm
833
776
702
Static Pressure (in. wg)
0.5
0.6
0.7
0.8
0.9
638
554
Watts
375
370
363
357
352
Cfm
894
800
754
636
518
Watts
468
457
444
431
423
Ckn
884
802
697
467
397
317
Watts
246
244
243
241
Cfm
910
806
749
680
Watts
343
339
336
332
328
322
Cfm
1148
1104
1028
958
850
782
645
Watts
441
432
421
410
400
Cfrn
1102
988
896
783
529
Watts
470
458
445
430
415
399
384
Cfm
1352
1257
1240
1199
1107
1015
924
Watts
514
501
487
471
455
438
422
Cfm
1338
1295
1288
1181
1111
966
813
Watts
646
636
626
614
602
589
Cfrn
1385
1268
1196
1159
1032
948
Watts
625
614
605
593
574
549
518
485
454
Cfm
1540
1510
1473
1396
1348
1288
1192
1124
1037
1.0
Watts
726
695
661
625
591
561
540
Cfrn
1648
1593
1530
1446
1352
1237
1114
Watts
790
766
742
713
Cfm
1616
1492
1394
1283
Watts
588
577
572
566
556
539
517
491
Cthl
1514
1543
1467
1408
1374
1324
1237
1161
Watts
756
738
719
699
676
650
623
596
572
555
Cfm
1785
1765
1706
1628
1577
1503
1421
1357
1298
1253
Watts
896
862
829
800
775
752
728
Cfm
f 880
1804
1704
1547
1565
1406
1367
Watts
903
898
873
842
814
792
777
764
743
701
618
Cfrn
2190
2158
2081
2026
1958
1866
1822
1744
1678
1535
1377
Watts
1002
978
960
941
914
880
839
798
764
750
Cfrn
2889
2291
2216
2120
2020
1952
1852
1727
1617
1549
Watts
1080
1080
1066
1041
1008
972
938
Grin
3316
2181
2122
2101
2000
1802
1672
• Air delivery values are based on operating voltage of 230 v or 460 v, wet coil, without filter or electric heater. Deduct filter and electric heater pressure drops to obtain
static pressure available for ducfing.
NOTES: 1. DO not operate the unit at a cooling airflow that is less than 350 cfm for each 12,000 Btuh of rated cooling capacity. Evaporator coil frosting may occur at
airflows below this point.
2. Dashes indicate portions of table that are beyond the blower motor capacity or are not recommended.
LVf'__l_q] ,'[d
The ability
ment
to properly
requires
equipment.
perform
certain
If you
perform
expertise,
do not possess
any maintenance
procedures
TO HEED
maintenance
mechanical
these,
OUS
INJURY
THIS
EQUIPMENT.
OR DEATH
tools,
do not attempt
on this equipment
recommended
in the User's
THIS WARNING
COULD
on this equipskills,
to
other
than those
Manual.
RESULT
FAILURE
IN SERI-
AND POSSIBLE
DAMAGE
Failure to follow these warnings
or death:
and
could result in serious
I. Turn off electrical power to the unit before
maintenance
or service on the unit.
2. Use extreme
caution
with any mechanical
TO
from
sharp edges,
16
servicing.
performing
panels
and parts.
any
As
personal
injury can result
either
on, or in contact
etc.
3. Never place anything
with. the unit.
tion when
when removing
equipment,
injury
combustible
The minimum
follows:
maintenance
requirements
for this equipment
are as
f. Reinstall
3. Restore
1. Inspect
air
filter(s/
each
month.
drain
pan,
Clean
or
replace
when
indoor
coil,
cooling
season
for cleanliness.
3. Inspect
blower
motor
lubrication
each
and condensate
Clean
and wheel
heating
and
drain
each
when necessary.
for cleanliness
cooling
and check
season.
Clean
connections
proper
operation
each
PAN
DRAIN
for tightness
heating
and
and cooling
controls
sea.son.
for
the condenser
the coils either
Service
obstructions,
when necessary.
airflow
IMPORTANT:
Never
in the return-air
duct system.
same dimensional
1 for recommended
air
operate the unit without
Always
replace
size and type as originally
filter sizes).
filter(s)
at least
once
with dust
EVAPORATOR
air filter
the filter
with
installed
the
month
and
BLOWER
longer
accumulated
motor
annually.
dirt
cleaning
the blower
warning
could
cause
AND
clean
drain
weeds
cooling
and shrubs_
inspect
season.
the coils
that interfere
all
with the
coil.
a fin comb.
with a mild
water on motors,
and clean
Remove
If coated
with
dirt or lint_
soft brush
with oil or
detergent-and-water
solution.
using a garden hose. Be careful
insulation,
wiring,
or air filterls_.
not to
For best
between
the coils.
Be sure to flush all dirt and debris from the unit
MOTOR
Do not attempt
economy,
and
Inspect
to lubricate
and continuing
grease
electrical
motor
each
the condenser
the drain
the coils.
from
efficiency.
the blower
wheel
power
and wheel.
serious
injury
to
Failure
the
unit
to adhere
pan and condensate
drain
line when
Clean the drain pan and condensate
matter
from
the pan.
Flush
inspecting
drain by removing
the pan and drain
all
tube with
clear water. Do not splash water on the insulation,
motor, wiring,
or air filter(s).
If the drain tube is restricted,
clear it with a
and
snake"
or
similar
drain port above
CONDENSER
tag
when dry: therefore,
or after
including
"plumbers
and
cleaned
coils with clear water,
auxiliary
Disconnect
coil. and condensate
year.
base.
are prelubricated.
life, operating
clean
CONDEN-
coils with a vacuum
cleaner,
using the
Be careful not to bend the fins. If coated
foreign
For
AND
and
results, spray condenser
coil fms from inside to outside the unit.
On units with an outer and inner condenser
coil, be sure to clean
at least twice during
the filter(s) becomes
and lint.
NOTE:
All motors
these motors.
COIL.
for
heating
bent fins with
splash
replace
and check
during
clean the
attachment.
grease,
(See Tables
unit
Straighten
Rinse
each
(throwaway-type)
or clean (cleanable-type)
each heating and cooling season or whenever
a suitable
Start
speeds
coil. evaporator
before
through
to unit.
and motor
EVAPORATOR
pan at least once each
AIR FILTER
clogged
COIL,
SATE
The coils are easily
electrical
Inspect
CONDENSER
Inspect
when
necessary.
4. Check
panel.
power
proper blower rotation
cooling cycles.
necessary.
2. Inspect
unit access
electrical
probe
the drain
device.
Ensure
that
the
tube is also clear.
FAN
before
to this
or death.
To clean the blower motor and wheel:
unit.
1. Remove and disassemble blower assembly as follows:
a. Remove unit access panel.
Damage
4. Remove
cover.
b. Disconnect motor lead from blower relay (BR). Disconnect
yellow lead from terminal L2 of the contactor.
to unit may result.
6 screws
holding
condenser
5. Turn motor/grille
assembly
expose the fan blade.
c. On all units remove blower assembly from unit. Remove
screws securing blower to blower partition and slide
assembly out. Be careful not to tear insulation in blower
compartment.
6. Inspect
the fan blades
7. If fan needs
d. Ensure proper reassembly by marking blower wheel and
motor in relation to blower housing before disassembly.
8. When
replacing
in. away
e. Loosen setscrew(s) that secures wheel to motor shaft,
remove screws that secure motor mount brackets to housing, and slide motor and motor mount out of housing.
upside
for cracks
to be removed,
fan off the motor
from
grille
down
and motor
on
top
to top
cover
to
or bends.
loosen
the setscrew
and slide the
shaft.
fan blade,
the motor
position
blade so that the hub is t/8
end ( 118 in. of motor
shaft
will be
visible).
9. Ensure that setscrew
when tightening.
engages
the flat area on the motor
shaft
2. Remove and clean blower wheel as follows:
10. Replace
a. Ensure proper reassembly
by marking wheel orientation.
grille.
ELECTRICAL
CONTROLS
AND WIRING -- Inspect and check
the electrical controls and wiring annually. Be sure to turn offthe
b. Lift wheel from housing. When handling and/or cleaning
blower wheel, be sure not to disturb balance weights (clips)
on blower wheel vanes.
c. Remove caked-on dirt from wheel and housing with a
brush. Remove lint and/or dirt accumulations from wheel
and housing with vacuum cleaner, using soft brush attachment. Remove grease and oil with mild solvent.
electrical
power
Remove
access
wiring.
screw
Check
to the unit.
panel
connections.
noticed,
disassemble
After
e. Reassemble motor into housing. Be sure setscrews are
tightened on motor shaft flats and not on round part of
shaft.
access panel.
heating cycle
inspecting
operation.
17
locate
all the
connections
If any
smoky
the connection,
wire end and reassemble
d. Reassemble wheel into housing.
to
all electrical
or
burned
clean
the connection
the electrical
electrical
controls
for tightness.
controls
Tighten
connections
all the parts, restrip
properly
and
and
all
are
the
and securely.
wiring,
replace
the
Start the unit, and observe at least one complete
and one complete
cooling cycle to ensure proper
If discrepancies
are observed
in either
or both operating
C99079
Fig. 18--Cooling
C99080
Charging Chart, 50GL024 Units
Fig. 19.--_ooling
Charging
Units
(C4_t60 _Z C_P_X_
O'_RT
LI_ wr_H U_IFF__X_
P_ IOAREFRK_J_
F_
_Z41
Chart, 50GL030
leo
i
zoo
= i
i
i_
11
3o0
_oo
su_;_
i
i i _1
i
_,_o
_oo
LI,_ TEMP_P_T_m£ _0_G F)
I
'
70o
coo
_
T
S_CTI_4 UN_ T_4P_RAIrURE <BEG C)
I
C99081
Fig. 20_Cooling
C99082
Charging Chart, 50GL036 Units
Fig. 21---Cooling
Charging Chart, 50GL042 Units
_o_ l_
_o)
_f14
_,o HZCHAR_,4_ CHART
L_RS l_Sl_ R41o& _FRK_4_
_'""
,,::::
iiiiii
!!JJJ_
:_: L:
i
•
T
•
I
C99084
C99083
Fig. 22--._ooling
Charging
Chart, 50GL048
Fig. 23_Cooling
Units
18
Charging Chart, 50GL060 Units
cycles,
or if a suspected
electrical
Refer
component
malfunction
with
to the unit wiring
NOTE:
Refer
in this
publication
the
has occurred,
proper
label when
to the heating
as
and/or
an
aid
electrical
check
making
these checkouts.
cooling
sequence
in
each
1. Turn off all power
instrumentation.
determining
2. Disconnect
3. Apply
of operation
proper
control
COPELAND
ing oil generally
indicates
a refrigerant
leak.
The
under
refrigerant
serious
pressure.
before
injury
devices,
If oil is detected
detected,
Use
or if low
or
refer to Check
leaks
to Checking
all
using
an electronic
leak-detector.
are found
If a refrigerant
does
AIRFLOW-
Adjusting
not
suspected,
require
ff
air filter
leak
When
Adjustments
METERING
is a fixed
SWITCHES
vices
into
compressor
circuit.
circuit
more
airis
to operate
with Puron
switches
must
be used
to Indoor
switches
Airflow
tech-
air conditioner.
LOSS
OF CHARGE/LOW-PRESSURE
They
switches
are
systems.
switch
is located
relief port
differential
protector.
to protect
The
Copeland
This
is the only oil allowed
scroll
on the liquid
system
higher
line and
uses
operating
No other
Puron®
pressures
refrigerant
If you are unsure
Because
these
under pressure,
without
breaking
switches
must be removed,
vacuum
coil pressure.
gages
switch.
are
You should
attached
have
to
to remove
remove
read
certain
Never
absorb
Mobil
and
3MA
625
psi
POE
oil.
SYSTEM
I
(R_!IOA/
refrigerant
and other
which
be
set,
to handle
manufacturer.
servicing
may result
Gage
designed
the equipment
compatible
has
refrigerants.
in this system.
must
consult
Puron
equipment
in property
this device
for
all system
open
or
damage
or
line and
It opens
against
switch
is lo-
excessive
con-
fan
in this system
POE.
water
This
uses
a
oil is extremely
readily.
as other
POE
oils can
oils designed
for HCFC
precautions
to avoid
all necessary
POE (polyolester)
long term
even
ON ROOFS
damage
to cracking)
any service
the roof,
take appropriate
which
risk
oil
WITH
compressor
to some
if immediately
performing
tering
19
Take
SYSTEMS
compressor
refrigerant
switch:
water
SERVICING
dures
coil, failed
refrigerants.
ment (leading
at 610 psig.
it absorbs
as much
TERIALS
Exposure,
high-pressure
protects
3MA
of the oil to the atmosphere.
to cause
system
compressor
oil, Mobil
meaning
15 times
exposure
that a problem
OIL--The
(POE)
and CFC
refrigeration
and recover
0 psi.
High pressure may be caused by a dirty condenser
motor, or condenser
air recircnlation.
To check
550
than R-22
system
components
hygroscopic,
conti-
with dry nitrogen.
SWITCH--The
discharge
polyolester
you are reasonably
pressure
HIGH-PRESSURE
in the
use
COMPRESSOR
it is not advisable
unless
so that
to
recovery
replacement
to unit.
3. Apply ohmeter
leads across
nuity on a good switch.
denser
is
leads on switch.
If switch
the
injury.
I. Turn off all power
cated
pressure
switch:
charge
uses
may be used
Failure
exists.
and replaces
for oil recharge.
[] [,_l//[,]:
(R-
Puron.
troubleshooting
and
pressure
opens
above
system
and it is
slugging,
REFRIGERANT
and
NOTE:
between
REFRIGERANT
hoses,
2. Disconnect
backwards
range
compressor
protects against low suction pressures
caused by such events as
loss of charge, low airflow across indoor coil, dirty filters, etc. It
To check
valves,
liquid
The pressure
relief port is a safety
against extreme high pressure,
the
has an operating
pressure.
off
(AIR CONDI-
on a pressure
drop at about 20 psig. If system
this, switch should be closed.
or discharge
by debris,
in the
for the Puron
SWITCH
suction
caused
the scroll from turning
me-
specifically
R-22
of stresses
prevents
This
ONLY)--This
;1:11:[
de-
shut
are present
has no dynamic
and
in the brass
are protective
as replacements
410A)
working
device.
Power
need for a cycle
device,
designed
airflow.
voltage).
(R_-IOA)
(as well as mechanical)
when
and
starts. The compressor
is equipped with an anti-rotational
and an intemai
pressure
relief port. The anti-rotational
device
and that the
is contained
(low
refrigerant
be shut off. if possible,
for most troubleshooting
Refrigerants
present additional
safety hazards.
tolerant
flooded
device
and
PISTON--This
pressure
designed
TIONER
obstructions,
high or low pressures
These
not
and
cooling
all supply-
the system
Pressure
control
if abnormally
refrigeration
orifice
(R-410A)
The scroll compressor
pumps refrigerant
throughout the system by
the interaction
of a stationary
and an orbiting scroll. The scroll
is
Charge
performance
that
refer
to check
Puron
REFRIGER-
is specifically
Wear safety glasses and gloves when handling refrigerants.
Keep torches and other ignition sources away from refrigerants and oils. Failure to follow this warning can cause a fire,
serious injury, or death.
line.
PRESSURE
wired
sure
ACCURATOR®
in the liquid
and/or
improper
be
necessary,
section
DEVICE
device
hex-body
unless
exists,
(PURON
in this product
r.,_lt'_
is
performance
Refrigerant
heating
are open and free from
is clean.
Airflow
checking
a problem
retu_7l-air grilles
The
used
near compressors.
compressor
EVAPORATOR
have conti-
section.
and low cooling
and
COMPRESSOR
caution
valves.
Leaks
You should
to avoid
is suspected,
solution.
should
niques.
switch.
is an electrical
extreme
ports and open all
solenoid
for Refrigerant
If no refrigerant
tering
recover
performance
tubing
suspected,
section.
flow
and
cooling
liquid soap
refer
all service
including
all refrigerant
torch,
pressure
SCROLL
compressor
Exercise
system repair or final unit disposal
or death.
flow-control
leak-test
Relieve
across
switch.
designed
to operate
with
cannot be interchanged.
¥!_ |VI'-I :qTIIT[_
System
leads
ANT -- The compressor
REFRIGERANT
CIRCUIT-Inspect all refrigerant
tubing connections and the unit base for oil accumulations
annually. Detect-
halide
ohmeter
nuity on a good
operation.
to unit.
leads on switch.
synthetic
cleaned
to occur
roofing
materials.
embrittle-
in one year or more.
precautions
include,
MA-
are known
up, may cause
that may risk exposure
leakage
SYNTHETIC
lubricants
to protect
but
When
of compressor
are
roofing,
not
oil to
proce-
limited
to,
replacement,
repairing
refrigerant
leaks,
replacing
components
such as filter drier, pressure switch, me-
device,
coil, accumulator,
or reversing
valve.
SYNTHETIC
ROOF
PRECAUTIONARY
PROCEDURE
1.Coverextended
roofworkingareawithan impermeable
polyethylene
(plastic)
dripclothortarp.
Cover
anapproximate
10x 10ft.area.
2.Cover
area
infrontoftheunitservice
panel
withaterrycloth
shop
towel
toabsorb
lubricant
spillsandprevent
run-offs,
and
protect
dropclothfromtears
caused
bytoolsorcomponents.
3.Place
terryclothshoptowelinsideunitimmediately
under
component(s)
tobeserviced
andprevent
lubricant
run-offs
through
thelouvered
openings
inthebase
pan.
4.perform
required
service.
5.Remove
anddispose
of anyoil contaminated
material
per
localcodes.
LIQUID
LINEFILTER
DRIER
-- Thefilterdrierisspecifically
designed
to operate
with Puron. Use only factory-authorized
20
components.
system
Filter drier must be replaced
is opened.
to cut the drier
When
from the system.
from the system.
contaminants
PURON
cylinders
Heat from
from
IR-410A)
infornaation
plate
contain
from cylinder
dip tube, charge
removing
whenever
the refrigerant
a filter drier, use a tubing
cutter
Do not unsweat
drier
unsweating
a filter
will release
moisture
and
drier into system.
REFRIGERANT
CHARGING
and charging
chart.
a dip tube
to allow
in upright
position.
Some
liquid
a commercial metering
into suction-line.
device
in manifold
refrigerant
refrigerant
For cylinders
Puron units with cylinder
-- Refer to unit
R-410A
to flow
equipped
with a
in upright position
hose. Charge
and
refrigerant
AIR CONDITIONER
Puron
refrigerant
to operate
Puron
refrigerant
cylinders
refrigerant
position.
to flow.
higher
WITH
pressures
PURON®
than R-22.
(R-410A),_QUICK
Be sure that servicing
REFERENCE
equipment
GUIDE
and replacement
components
are designed
Puron
Leak
Only
pressure
use factory
Do not instan
specified
a suction-line
POE oils absorb
moisture
filter
rapidly.
POE oils may cause
damage
Wrap
and service
all filter driers
A Puron
liquid-line
filter drier
with rated
device
with 520 psig low-side
retard.
working
pressures
plastics
no less than 600 psig.
oil to atmosphere.
and roofing
materials.
with wet cloth when brazing.
is required
on every
unit.
Do not use an R-22 TXV.
Never
open system
to atmosphere
When
system
be opened
must
Always
replace
Do not
vent Puron
Observe
while
it is under
for service,
filter drier after opening
break
system
a vacuum.
vacuum
with dry nitrogen
for service.
into the atmosphere.
all warnings,
cautions,
Do not leave Puron suction
and bold
text.
line driers in place for more than 72 hrs.
21
out of cylinder
upside down
in the manifold
in liquid-line.
valves
to flow
BW400.
type metering
oil.
Do not expose
to certain
or DOT
with POE oils.
from
line filter driers
drier
DOT 4BA400
liquid
be positioned
HFC refrigerant.
compatible
moisture
liquid
a dip tube that allows
have a dip tube and MUST
rating.
to detect
is only
will not remove
have
Use a commercial
and 200 psig low-side
pressure
be designed
1, 1999.
must be 400 psig,
liquid refrigerant.
be 750 psig high-side
other HFCs,
pumps
with
to March
1, 1999 and later DO NOT
rating
be charged
should
as with
Vacuum
prior
March
with 750 psig service
detectors
Puron,
service
should
sets should
hoses
manufactured
manufactured
cylinder
systems
Manifold
are rose colored.
cylinders
Cylinders
Recovery,
Use
at 50%-70%
with Puron.
Puron
•
operates
and replace
filter driers.
hose.
in upright
to allow
liquid
Table 5.--Troubleshooting
Compressor
Compressor
furls
and condenser
-- Cooling
REMEDY
CAUSE
SYMPTOM
fan will not start
will not start but condenser
fan
Three-phase
scroll compressor (50GL030-060)
makes excessive noise, and there may be a
low pressure differential
Power failure
Call power Company
Fuse blown or circuit breaker thpped
Replace fuse or reset circuit breaker
Defective thermc6tat, contactor, transformer, contramrelay, high pressure, or loss-of-charge swtich
Replace component
insufficient fine voltage
Determine
Incorrect or faulty widng
Check widng diagram and rewire correctly
Thermostat setting
Lower thermostat setting below room temperature
too high
Faulty widng or loose connections in compressor
circuit
Check wiring and repair or replace
Compressor motor burned out, seized, or internal
ovedoad open
Determine
Defective run!start capacitor,
Determine cause and replace
overload, start relay
Compressor
Excessive
operates
continuously
head pressure
Correct the direction of rotation by reversing two
of the 3-phase power leads to the unit. Shut
down unit to allow pressures to equalize
is rotating in the wrong direc-
Excessive
Suction
suction pressure
pressure
too low
Recover refrigerant,
charge to capacities
evacuate system, and reshown on nameplate
Insufficient line voltage
Replace and determine cause
Determine cause and correct
Blocked condenser
Determine
cause and correct
Defective run/start capacitor, ovedoad or start
relay
Determine
cause and replace
Defective thermostat
Replace thermostat
Faulty condenser-tan motor or capacitor
Restric_on in refrigerant system
Replace
Locate restriction and remove
Dirty air tilter
Replace filter
Unit undersized for load
Decrease load or increase unit size
Thermostat set too low
Reset thermostat
Low refrigerant charge
Locate leak, repair, and recharge
Leaking velves in compressor
Replace compressor
Air in system
Recover refrigerant, evacuate system, and recharge
Condenser coil dirty or restncted
Clean coil or remove restriction
Dirty air tilter
Replace filter
Dirty condenser coil
Clean coil
Refrigerant overcharged
Recover excess
Air in system
Recover refhgerant, evacuate system, and recharge
o{ air short-cycling
Low refrigerant charge
too low
compressor
Scroll compressor
;ion
Condenser air restricted
Head pressure
Repiace
Replace fuse or reset circuit breaker
Determine cause
Detective compressor
sat-
cause.
(Ztheleg of 3-phase power dead
Refrigerant overcharge or undercharge
Compressor cycles (other than normally
isfying thermostat)
cause and correct
refrigerant
Determine cause and correct
Restriction in liquid tube
Check for leaks, repair and recharge
Remove restriction
High heat load
Check for source and eliminate
Refrigerant overcharged
Recover excess refrigerant
Dirty air ftitar
Replace tilter
Low refdgerant charge
Check for leaks, repair and recharge
Metadng device or low side Pastdctad
Remove source of restriction
Insufficient evaporator airflow
Increase air quantity. Check tilter -- replace
necessary
Temperature too low in conditioned area
Outdoor ambient below 40 F
Reset thermostat.
Field-installed tilter-drier restricted
Replace
22
Install low-ambient kit
if
START-UP
(REMOVE
I. PRELIMINARY
CHECKLIST
AND STORE
IN JOB
FILE)
INFORMATION
Model No ...............................................................................................................................................................................................................
Serial
Date
No ................................................................................................................................................................................................................
........................................................................................................................................................................................................................
Technician
..............................................................................................................................................................................................................
II. PRE-START-UP
__
Verify
that all packing
materials
__
Verify
that condensate
connection
have been removed
__
Check all electrical
__
Check
that indoor
__
Verify
that unit installation
__
Check fan wheel
is installed
connections
and terminals
(evaporatorl
from unit
per installation
instructions
for tightness
air filter is clean
and in place
is level
and propeller
for location
in housing
and setscrew
tightness
III. START-UP
Supply Voltage
Compressor
Indoor
LI-L2
Amps
L2 L3
Ll
(Evaporator)
L3-LI
L2
L3
Fan Amps
TEMPERATURE
Outdoor
(Condenser)
Return-Air
Air Temperature
Temperature
Cooling
Supply
DB
__
Air
DB
WB
DB
WB
PRESSURES
Refrigerant
Suction
Suction
psig
Line Temp*
Refrigerant
Discharge
Discharge
psig
Tempt
--
Verify
refrigerant
__
Verify
that 3-phase
charge
scroll
using charging
compressor
tables
(50GL030-060)
is rotating
• Measuredat suctioninletto compressor
t Measuredat liquidline leavingcondenser
23
in correct
direction
Copyi_ht
2000 CARRIER
Manufacturer
Coqo. • 7310 W. Morris St. • Indianapolis, IN 46231
reserves
PC 101
the right to discontinue,
Catalog
No. 565_313
or change
50gllsi
at any time, specifications
Printed in U.S.A.
or designs
Form 50GL-1SI
without notice and without incurring obligations.
Pg 24
6-00
Replaces: New