Carrier 50PG03 07 User Manual
50PG03---07  
Single Package Rooftop Units  
Electric Cooling with PURONR (R---410A)  
Refrigerant and COMFORTLinkt Controls  
Installation Instructions  
IMPORTANT: This installation instruction contains basic unit  
installation information including installation of field control  
devices. For information on unit start--up, service, and operation,  
refer to the unit Controls, Start-- Up, Operation, Service, and  
Troubleshooting Instructions also enclosed in the unit literature  
packet.  
!
WARNING  
ELECTRICAL SHOCK HAZARD  
Failure to follow this warning could cause personal  
injury or death.  
TABLE OF CONTENTS  
Before performing service or maintenance operations  
on unit, turn off main power switch to unit and install  
lockout tag.  
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . . . . 1  
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4  
Step 1 -- Provide unit Support . . . . . . . . . . . . . . . . . . . . . . . . . 4  
Step 2 -- Rig and Place Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . 4  
Step 3 -- Field Fabricate Ductwork . . . . . . . . . . . . . . . . . . . . . . 7  
Step 4 -- Make Unit Duct Connections . . . . . . . . . . . . . . . . . . . 7  
Step 5 -- Install External Trap for Condensate Drain . . . . . . . . 7  
Step 6 -- Make Electrical Connections . . . . . . . . . . . . . . . . . . . 8  
!
WARNING  
UNIT OPERATION AND SAFETY HAZARD  
Failure to follow this warning could cause personal  
injury, death and/or equipment damage.  
Puron (R--410a) refrigerant systems operate at higher  
pressures than standard R--22 systems. Do not use R--22  
service equipment or components on Puron refrigerant  
equipment.  
Step 7 -- Install Outdoor Air Hoods (Units With  
Economizer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22  
Step 8 -- Install All Accessories . . . . . . . . . . . . . . . . . . . . . . . 22  
SAFETY CONSIDERATIONS  
Installation and servicing of air-conditioning equipment can be  
hazardous due to system pressure and electrical components. Only  
trained and qualified service personnel should install, repair, or  
service air-conditioning equipment.  
!
WARNING  
FIRE, EXPLOSION HAZARD  
Failure to follow this warning could result in personal  
injury, death and/or property damage.  
Untrained personnel can perform the basic maintenance functions  
of cleaning coils and filters and replacing filters. All other  
operations should be performed by trained service personnel.  
When working on air-conditioning equipment, observe precautions  
in the literature, tags and labels attached to the unit, and other  
safety precautions that may apply.  
1. Improper installation, adjustment, alteration, service,  
or maintenance can cause property damage, personal  
injury, or loss of life. Refer to the User’s Information  
Manual provided with this unit for more details.  
2. Do not store or use gasoline or other flammable  
vapors and liquids in the vicinity of this or any other  
appliance.  
Follow all safety codes. Wear safety glasses and work gloves.  
Recognize safety information. This is the safety--alert symbol  
.
When you see this symbol on the unit and in instructions or  
manuals, be alert to the potential for personal injury.  
Understand the 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 a hazard  
which could result in personal injury or death. CAUTION is used  
to identify unsafe practices which may result in minor personal  
injury or product and property damage. NOTE is used to highlight  
suggestions which will result in enhanced installation, reliability, or  
operation.  
IMPORTANT: Units have high ambient operating limits. If limits  
are exceeded, the units will automatically lock the compressor out  
of operation. Manual reset will be required to restart the  
compressor.  
3
Positioning  
INSTALLATION  
Step 1 — Provide Unit Support  
Roof Curb  
Maintain clearance, per Fig. 2, around and above unit to provide  
minimum distance from combustible materials, proper airflow, and  
service access. See Fig. 4 for location of access panels.  
Assemble or install accessory roof curb in accordance with  
instructions shipped with this accessory. (See Fig. 1.) Install  
insulation, cant strips, roofing, and counter flashing as shown.  
Ductwork can be installed to roof curb before unit is set in place.  
Ductwork must be attached to curb and not to the unit. Curb must  
be level. This is necessary to permit unit drain to function properly.  
Unit leveling tolerance is 1/16--in. per linear ft in any direction.  
Refer to Accessory Roof Curb Installation Instructions for  
additional information as required. When accessory roof curb is  
used, unit may be installed on class A, B, or C roof covering  
material. Carrier roof curb accessories are for flat roofs or slab  
mounting.  
Do not install unit in an indoor location. Do not locate air inlets  
near exhaust vents or other sources of contaminated air.  
Although unit is weatherproof, guard against water from higher  
level runoff and overhangs.  
After unit is in position, remove crating and polyethylene sheet.  
Roof Mount  
Check building codes for weight distribution requirements. Unit  
operating weight is shown in Table 1.  
Installation Onto Curb  
The 50PG units are designed to fit on the accessory full perimeter  
curb. In either case, correct placement of the unit onto the curb is  
critical to operating performance. To aid in correct positioning,  
place unit on roof curb to maintain 1/4--in. gap between the inside  
of rail and roof curb on long sides and a 1/2--in. gap between the  
inside of rail and roof curb on both duct and condenser ends. Refer  
to Fig. 1 and 3, to assure proper duct opening alignment.  
IMPORTANT: The gasketing of the unit to the roof curb is critical  
for a watertight seal. Install gasket with the roof curb as shown in  
Fig. 1. Improperly applied gasket can also result in air leaks and  
poor unit performance. Do not slide unit to position on roof curb.  
Alternate Unit Support  
NOTE: Before positioning unit onto curb, refer to Step 5 -- Install  
External Trap for Condensate Drain section concerning bottom  
drain connection plug.  
When a curb cannot be used, install unit on a noncombustible  
surface. Support unit with sleepers, using unit curb support area. If  
sleepers cannot be used, support long sides of unit with a minimum  
of 3 equally spaced 4--in. x 4--in. pads on each side.  
Step 2 — Rig and Place Unit  
Inspect unit for transportation damage. See Table 1 for physical  
data. File any claim with transportation agency.  
!
CAUTION  
UNIT DAMAGE HAZARD  
Failure to follow this caution may result in equipment  
damage.  
!
CAUTION  
Do not slide unit to position when it is sitting on the curb.  
Curb gasketing material may be damaged and leaks may  
result.  
PERSONAL INJURY AND PROPERTY DAMAGE HAZARD  
Failure to follow this caution may result in damage to roof.  
All panels must be in place when rigging. Unit is not  
designed for handling by fork truck.  
Slab Mount (Horizontal Units Only)  
Provide a level concrete slab that extends a minimum of 6--in.  
beyond unit cabinet. Install  
condenser--coil air inlet to prevent grass and foliage from  
obstructing airflow.  
NOTE: Horizontal units may be installed on a roof curb if  
required.  
a
gravel apron in front of  
Do not drop unit; keep upright. Use spreader bars over unit to  
prevent sling or cable damage. Rollers may be used to move unit  
across a roof. Level by using unit rail as a reference; leveling  
tolerance is ± 1/16--in. per linear ft in any direction. See Fig. 3 for  
additional information. Unit rigging weight is shown in Fig. 3.  
Rigging holes are provided in the unit base rails as shown in Fig. 3.  
Refer to rigging instructions on unit.  
CAUTION-NOTICE TO RIGGERS:  
ACCESS PANEL MUST BE IN PLACE WHEN RIGGING.  
Hook rigging shackles through holes in base rail, as shown in  
Detail A. Holes in base rails are centered around the unit  
center of gravity. Use wooden top skid, when rigging, to  
prevent rigging straps from damaging unit.  
A
B
C
D
E
MAX. WEIGHT  
UNIT  
SIZE  
in.  
mm  
in.  
mm  
in.  
mm  
in.  
mm  
in.  
mm  
lb  
kg  
03-07  
77.9  
1978  
36-54  
914-1371  
44.8  
1139  
42.0  
1067  
23.5  
597  
1156  
525  
C07270  
Fig. 3 -- 50PG Rigging Label  
4
Table 1 – Physical Data  
BASE UNIT 50PG  
NOMINAL CAPACITY (Tons)  
OPERATING WEIGHT (lb)  
Unit*  
03  
2
04  
3
05  
4
06  
5
07  
6
704  
704  
775  
829  
874  
Economizer  
Vertical  
Horizontal  
40  
50  
40  
50  
40  
50  
40  
50  
40  
50  
Humidi-MiZer™ Adaptive Dehumidification  
22  
22  
31  
27  
26  
System  
Roof Curb  
14-in.  
24-in.  
122  
184  
122  
184  
122  
184  
122  
184  
122  
184  
COMPRESSOR  
Quantity  
Oil Type  
Number of Refrigerant Circuits  
Oil (oz)  
Fully Hermetic Scroll  
1
1
1
1
1
Copeland 3MA  
1
38  
1
42  
1
42  
1
66  
1
56  
REFRIGERANT TYPE  
Expansion Device  
Operating Charge (lb) — Standard Unit  
R-410A (Puron® Refrigerant)  
TXV  
7.3  
TXV  
9.0  
TXV  
15.7  
TXV  
16.6  
TXV  
19.0  
Operating Charge (lb) — Unit with  
11.75  
13.50  
25.00  
22.00  
22.70  
Humidi-MiZer System  
CONDENSER COIL  
Condenser A (Outer)  
Rows...Fins/in.  
Face Area (sq ft)  
Condenser B (Inner)  
Rows...Fins/in.  
Face Area (sq ft)  
Humidi-MiZer Coil  
Rows...Fins/in.  
Enhanced Copper Tubes, Aluminum Lanced Fins  
1…17  
12.6  
1…17  
12.6  
2…17  
12.6  
2…17  
12.6  
2…17  
12.6  
—
—
1…17  
12.6  
2…17  
12.6  
2…17  
12.6  
2…17  
12.6  
1...17  
6.4  
1...17  
6.4  
1...17  
9.3  
1...17  
9.3  
1...17  
9.3  
Face Area (sq ft)  
CONDENSER FAN  
Quantity…Diameter (in.)  
Nominal Cfm (Total, all fans)  
Motor Hp  
Propeller  
1…24  
1…24  
1…24  
1…24  
1…24  
3500  
3500  
3500  
4500  
4500  
1
1
1
1
1
/
/
/
/
/
4
8
8
8
4
Nominal Rpm — High Speed  
Nominal Rpm — Low Speed  
EVAPORATOR COIL  
Rows…Fins/in.  
825  
300  
825  
300  
825  
300  
1100  
300  
1100  
300  
Enhanced Copper Tubes, Aluminum Double-Wavy Fins, Face Split  
2…15  
9.3  
2…15  
9.3  
2…15  
9.3  
3…15  
9.3  
4…15  
9.3  
Face Area (sq ft)  
* See Legend on next page.  
5
Table 1 — Physical Data (cont)  
BASE UNIT 50PG (cont)  
EVAPORATOR FAN  
Quantity…Size (in.)  
03  
04  
05  
06  
07  
Centrifugal Type, Belt Drive  
Low  
High  
Low  
High  
1...12 x 9  
1...12 x 9  
Belt  
Belt  
800  
0.85  
0.85  
1620  
48Y  
1...12 x 9  
1...12 x 9  
Belt  
Belt  
1200  
0.85  
0.85  
1620  
48Y  
1...12 x 9  
1...12 x 9  
Belt  
Belt  
1600  
0.85  
1.60/2.40†  
1620  
48Y  
56Y  
596-910  
828-1173  
Ball  
1...12 x 9  
1...12 x 9  
Belt  
Belt  
2000  
0.85/2.40†  
1.60/2.40†  
1725  
56Y  
56Y  
690-978  
929-1261  
Ball  
1...12 x 9  
1...12 x 9  
Belt  
Belt  
2400  
2.40  
3.10  
1725  
56Y  
Type Drive  
Nominal Cfm  
Maximum Continuous Bhp  
Low  
High  
Motor Nominal Rpm  
Motor Frame Size  
Low  
High  
Low  
High  
48Y  
48Y  
56Y  
Fan Rpm Range  
482-736  
656-1001  
Ball  
482-736  
796-1128  
Ball  
796-1128  
1150-1438  
Ball  
Motor Bearing Type  
Maximum Fan Rpm  
Motor Pulley Pitch Diameter Range (in.)  
2000  
2000  
2000  
2000  
2000  
Low  
High  
Low  
High  
Low  
High  
Low  
High  
Low  
High  
Low  
High  
Low  
High  
Low  
High  
Low  
High  
Low  
High  
1.9-2.9  
1.9-2.9  
6.8  
1.9-2.9  
2.4-3.4  
6.8  
1.9-2.9  
2.4-3.4  
5.5  
2.4-3.4  
2.8-3.8  
6.0  
2.4-3.4  
4.0-5.0  
5.2  
Fan Pulley Pitch Diameter (in.)  
Nominal Motor Shaft Diameter (in.)  
Belt...Pitch Length (in.)  
5.0  
5.2  
5.0  
5.2  
6.0  
1
1
1
1
1
5
5
5
5
7
/
/
/
/
/
/
/
/
/
/
2
2
2
2
2
8
8
8
8
8
49.3  
49.3  
AX  
49.3  
49.3  
AX  
49.3  
49.3  
AX  
49.3  
49.3  
AX  
49.3  
52.3  
AX  
Belt…Type  
AX  
AX  
AX  
AX  
AX  
Pulley Center Line Distance Min. (in.)  
Pulley Center Line Distance Max. (in.)  
16.2  
16.2  
20.2  
20.2  
48  
65  
5
16.2  
16.2  
20.2  
20.2  
48  
62  
5
16.2  
16.2  
20.2  
20.2  
59  
69  
5
16.2  
16.2  
20.2  
20.2  
58  
66  
5
16.2  
16.2  
20.2  
20.2  
66  
58  
5
Speed Change per Full Turn of  
Movable Pulley Flange (rpm)  
Movable Pulley Maximum Full  
Turns from Closed Position  
5
482  
5
482  
5
596  
5
690  
5
796  
Factory Pulley Setting (rpm)  
656  
796  
828  
929  
1150  
3
3
3
3
3
Fan Shaft Diameter at Pulley (in.)  
HIGH-PRESSURE SWITCH (psig)  
Cutout  
Reset (Auto.)  
RETURN-AIR FILTERS  
Quantity…Size (in.)  
/
/
/
/
/
4
4
4
4
4
660 ± 10  
505 ± 20  
660 ± 10  
505 ± 20  
660 ± 10  
505 ± 20  
Throwaway  
4…16 x 20 x 2  
660 ± 10  
505 ± 20  
660 ± 10  
505 ± 20  
4…16 x 20 x 2  
4…16 x 20 x 2  
4…16 x 20 x 2  
4…16 x 20 x 2  
LEGEND  
TXV --- Thermostatic Expansion Valve  
* Aluminum evaporator coil/aluminum condenser coil.  
{
Single phase/three phase.  
6
duct covers to duct panel. Save panels. Install duct covers in the  
vertical duct openings in the basepan with the insulation side up.  
Covers will drop into openings and can be secured using  
field--supplied self--tapping screws. Ductwork can be attached to  
duct flanges provided on unit. When securing ductwork to unit, do  
not drill in area below bead or above top edge of duct opening.  
Step 3 — Field Fabricate Ductwork  
On vertical units, secure all ducts to roof curb and building  
structure. Do not connect ductwork to unit. For horizontal  
applications, field--supplied flanges should be attached to  
horizontal discharge openings and all ductwork secured to the  
flanges. Insulate and weatherproof all external ductwork, joints,  
and roof openings with counter flashing and mastic in accordance  
with applicable codes.  
Ducts passing through an unconditioned space must be insulated  
and covered with a vapor barrier.  
If a plenum return is used on a vertical unit, the return should be  
ducted through the roof deck to comply with applicable fire codes.  
Step 5 — Install External Trap for Condensate  
Drain  
The unit’s 3/4--in. condensate drain connections are located on the  
bottom and side of the unit. If the down drain is used, drill a  
3
minimum of a 5/8-in. diameter hole but not larger than a / -in.  
4
diameter hole through the drain pan. A dimple of 2 mm in  
diameter and 1.5 mm deep will be provided in the drain pan to help  
locate the drill bit and to start the hole. Do not cut through the  
PVC pipe threads. Unit discharge connections do not determine  
the use of drain connections; either drain connection can be used  
with vertical or horizontal applications. See Fig. 2 for locations.  
When using the standard side drain connection, make sure the plug  
(red) in the alternate bottom connection is tight before installing the  
unit. (See Fig. 5.)  
A minimum clearance is not required around ductwork. Cabinet  
return--air static pressure (a negative condition) shall not exceed  
0.35--in. wg with economizer or 0.45--in. wg without economizer.  
Step 4 — Make Unit Duct Connections  
Vertical Supply/Return Configuration  
Unit is shipped in vertical supply/return configuration. Ductwork  
openings are shown in Fig. 1 and 3. Attach the ductwork to the  
roof curb. Do not attach duct directly to the unit.  
To use the bottom drain connection for a roof curb installation,  
relocate the factory--installed plug (red) from the bottom  
connection to the side connection. A 1/2--in. socket extension can  
be used to remove the plug. (See Fig. 5.) The piping for the  
condensate drain and external trap can be completed after the unit  
is in place.  
All units must have an external trap for condensate drainage. Install  
a trap at least 4--in. deep and protect against freezeup. If drain line  
is installed downstream from the external trap, pitch the line away  
from the unit at 1--in. per 10 ft of run. Do not use a pipe size  
smaller than the unit connection (3/4--in.). (See Fig. 6 and 7.)  
The 50PG units are provided with a removable condensate pan for  
ease of cleaning. It is recommended that a union be placed between  
the unit and condensate drainage to ease the removal of the pan  
during servicing. Adequate clearance should be allowed if removal  
of condensate pan is required. Allow 54--in. between condensate  
pan access panel and any obstruction for complete removal.  
!
WARNING  
PERSONAL INJURY HAZARD  
Failure to follow this warning could result in personal  
injury.  
For vertical supply and return units, tools or parts could  
drop into ductwork and cause an injury. Install a  
90--degree turn in the return ductwork between the unit  
and the conditioned space. If a 90--degree elbow cannot  
be installed, then a grille of sufficient strength and  
density should be installed to prevent objects from  
falling into the conditioned space.  
Horizontal Supply/Return Applications  
Unit can be field--converted from vertical supply/return to  
horizontal supply/return. Remove all screws securing horizontal  
CONTROL BOX  
AND  
COMPRESSOR  
ELECTRICAL  
OPTIONS PANEL  
INDOOR MOTOR  
ACCESS DOOR  
OUTDOOR AIR  
SCREEN  
(HIDDEN)  
CONDENSER COIL  
ACCESS PANEL  
ECONOMIZER  
HOOD  
ELECTRIC HEAT  
ACCESS DOOR  
BAROMETRIC  
RELIEF DAMPER  
FILTER ACCESS DOOR  
HOOD  
BASEPAN CONNECTIONS  
ACCESS PANEL  
C07272  
Fig. 4 -- Panel and Filter Locations  
7
INSERT SIDE DRAIN  
PLUG FOR DOWN  
DRAIN USE.  
DRILL 5/8” DIA. (0.625 mm) HOLE  
THRU FOR DOWN DRAIN USE.  
C10321  
Fig. 5 -- Condensate Drain Pan  
OPTIONAL UNIONS  
TO ALLOW FOR CONDENSATE  
PAN REMOVAL  
4" (102mm)  
CONDENSATE  
PAN ACCESS  
PANEL  
C06234  
Fig. 6 -- External Trap for Condensate Drain  
Step 6 — Make Electrical Connections  
(For more details, refer to the Controls, Start--up, Operation, and  
Troubleshooting manual).  
Field Power Supply  
All 208/230--v units are factory wired for 230--v power supply. If  
the 208/230--v unit is to be connected to a 208--v power supply, the  
transformers (TRAN1 and TRAN2) must be rewired by moving  
the black wire with the 1/4--in. female quick connect from the  
230--volt connection and moving to the 200--volt 1/4--in. male  
terminal on the primary side of the transformer.  
Refer to unit label diagram for additional information. Leads are  
provided for field wire connections. Use UL (Underwriters  
Laboratories) approved copper/aluminum connector.  
NOTE: Trap should be deep enough to offset maximum unit static difference.  
A 4-in. trap is recommended.  
When installing rooftop units, provide safety disconnect per NEC  
(National Electrical Code) Article 440 or local codes. For  
non--fused disconnects, size the disconnect according to the sizing  
data provided in the electrical data tables. If a fused disconnect is  
used, determine the minimum size for the switch based on the  
disconnect sizing data provided in the electrical data tables and  
then coordinate the disconnect housing size to accommodate the  
Maximum Overcurrent Protection (MOCP) device size as marked  
on the unit informative plate. (See Table 2 and 3.) All field wiring  
must comply with NEC and local codes. Size wire based on MCA  
(Minimum Circuit Amps) on the unit informative plate. See Fig. 8  
for power wiring connection to the unit leads and equipment  
ground.  
C06291  
Fig. 7 -- Condensate Drain Piping Details  
Route power and ground lines through control box end panel or  
unit basepan (see Fig. 2) to connections as shown on unit wiring  
diagram and Fig. 8. Factory leads may be wired directly to the  
disconnect.  
8
Set heat anticipator settings as follows:  
!
CAUTION  
Stage 1  
VOLTAGE  
STAGE 1 AND 2  
(W1 AND W2) ON  
(W1) ON  
UNIT DAMAGE HAZARD  
All  
0.2  
0.4  
Failure to follow this caution may result in equipment  
damage.  
Settings may be changed slightly to provide a greater degree of  
comfort for a particular installation.  
The correct power phasing is critical to the operation of the  
scroll compressors. An incorrect phasing will result in an  
alarm being generated and compressor operation lockout.  
Should this occur, power phase correction must be made to  
the incoming power. Damage to compressor could result.  
C.A1  
FIELD  
POWER  
WIRING  
FACTOR  
POWER  
WIRING  
21  
22  
23  
11  
12  
13  
!
WARNING  
ELECTRICAL SHOCK HAZARD  
Failure to follow this warning could result in personal  
injury or death.  
EQUIP GND  
Unit cabinet must have an uninterrupted, unbroken  
electrical ground to minimize the possibility of personal  
injury if an electrical fault should occur. This ground may  
consist of electrical wire connected to unit ground lug in  
control compartment, or conduit approved for electrical  
ground when installed in accordance with NEC; ANSI  
(American National Standards Institute)/NFPA (National  
Fire Protection Association), latest edition, and local  
electrical codes.  
LEGEND  
C.A1 -- Compressor Contactor (A1)  
EQUIP -- Equipment  
GND -- Ground  
NEC -- National Electrical Code  
NOTE: The maximum wire size for C.A1 is 2/0.  
C06237  
Fig. 8 -- Field Power Wiring Connections  
Field wiring must conform to temperature limitations for type “T”  
wire. All field wiring must comply with NEC and local  
requirements.  
THERMOSTAT ASSEMB Y  
REMOVABLE JUMPER  
L
Operating voltage to compressor must be within voltage range  
indicated on unit nameplate. On 3--phase units, voltages between  
phases must be balanced within 2%.  
RH  
RC  
Y1  
Y2  
W1  
W2  
G
C
C
X
TB1  
R
Y1  
Y2  
W1  
W2  
G
X
Unit failure as a result of operation on improper line voltage or  
excessive phase imbalance constitutes abuse and may cause  
damage to electrical components.  
ROOFTOP UNIT  
Field Control Wiring (Units Without Optional  
Humidi-MiZert Adaptive Dehumidification System)  
C06292  
Fig. 9 -- Field Control Thermostat Wiring  
Unit can be controlled with either a Carrier--approved accessory  
thermostat or a Carrier--approved space temperature sensor. Install  
thermostat according to the installation instructions included with  
accessory. Locate thermostat assembly or space temperature sensor  
on a solid interior wall in the conditioned space to sense average  
temperature.  
Route thermostat or space temperature sensor cable or equivalent  
single leads of colored wire from subbase terminals through  
conduit into unit to low--voltage connections as shown on unit  
label wiring diagram and in Fig. 9 or 10.  
T-56 SPT  
T-55 SPT  
SEN  
SEN  
SET  
RED  
BLACK  
WHITE  
JUMPER  
T55  
TB1  
1
2
3
NOTE: For wire runs up to 50 ft, use no. 18 AWG (American  
Wire Gauge) insulated wire (35_C minimum). For 50 to 75 ft, use  
no. 16 AWG insulated wire (35_C minimum). For over 75 ft, use  
no. 14 AWG insulated wire (35_C Minimum). All wire larger than  
no. 18 AWG cannot be directly connected at the thermostat and  
will require a junction box and splice at the thermostat.  
ROOFTOP UNIT  
C06239  
Fig. 10 -- Field Control Space Temperature Sensor Wiring  
Field Control Wiring (Units With Optional Humidi-  
MiZert Adaptive Dehumidification System)  
Units require temperature control inputs for cooling and heating  
operation and humidity control inputs for Humidi--MiZer  
operation.  
9
Temperature Control  
Controls, Start--up, Operation and Troubleshooting manual for  
configuration.  
The unit can be controlled with either a Carrier--approved space  
temperature sensor, a Carrier accessory Thermidistatt device, or a  
Carrier--approved accessory thermostat. Install the temperature  
control device according to the installation instructions included  
with the accessory. Locate the device on a solid interior wall in the  
conditioned space to sense average temperature. Carrier space  
temperature sensor wiring connections are shown in Fig. 10.  
General thermostat field control wiring connections are shown in  
Fig. 9. Carrier Thermidistat device wiring connections are shown  
in Fig. 11. Configuration of the unit control is required to specify  
the control input type before unit operation.  
Route thermostat or space temperature sensor cable or equivalent  
single leads of colored wire from subbase terminals through  
conduit into unit to low--voltage connections as shown on unit  
label wiring diagram and in Fig. 9--11.  
NOTE: For wire runs up to 50 ft, use no. 18 AWG (American  
Wire Gauge) insulated wire (35_C minimum). For 50 to 75 ft, use  
no. 16 AWG insulated wire (35_C minimum). For over 75 ft, use  
no. 14 AWG insulated wire (35_C Minimum). All wire larger than  
no. 18 AWG cannot be directly connected at the thermostat and  
will require a junction box and splice at the thermostat.  
Units with the Humidi--MiZert option receive a discrete input  
from a field--installed device (such as from the Carrier humidistat  
or Thermidistat device). The discrete input is connected to the TB1  
terminal strip points labeled Humidistat 1 and 2. As this is a  
discrete input, one of the connection points is for power to the  
switch and the other is the return path. (See Fig. 12.)  
A space relative humidity sensor input (SP.RH) is only available if  
an economizer board (ECB) is installed in the unit and then the  
sensor can be connected to the OAQ point TB1--4. (See Fig. 12.)  
This input is used instead of the discrete humidistat or thermidistat  
inputs. The input controls the Humidi--MiZer using the 4 to 20 mA  
as percent humidity. The relative humidity value (measured by the  
relative humidity sensor) can be displayed on the Scrolling  
Marquee, in the space through a System Pilott device, or can be  
read by other CCN devices where it can be used to perform more  
advanced functions. The humidity sensor must be configured  
correctly; refer to the Controls, Start--up, Operation, and  
Troubleshooting manual for details.  
If the customer also wishes to install a smoke detector into a  
Humidi--MiZer equipped 50PG unit, the fire shutdown connection  
points are on Plug PL--19, located in the economizer section. See  
the unit wiring schematic for wiring. For third--party smoke  
detector, see Fig. 13.  
Set heat anticipator settings as follows:  
Stage 1  
STAGE 1 AND 2  
(W1 AND W2) ON  
VOLTAGE  
All  
(W1) ON  
Point 19--3 is the 24 vac power source for the detector and point  
19--5 is the 24 vac signal input for fire shutdown.  
0.2  
0.4  
More information is available in the third party control section of  
the Controls, Start--up, Operation, and Troubleshooting manual.  
Settingsmay be changed slightly to provide a greater degree of  
comfort for a particular installation.  
Humidity Control  
THERMIDISTAT  
G
G
C
C
DEHUM  
OC  
R
R
Y1  
Y1  
Y2  
Y2  
W1  
W1  
W2  
W2  
Unit can be controlled with either a Carrier accessory Thermidistat  
device or a Carrier--approved accessory humidistat (switch output).  
The input for an accessory humidity sensor with 4 to 20 mA output  
is another option available when an economizer board is installed.  
Install the humidity control device according to the installation  
instructions included with the accessory. Locate the device on a  
solid interior wall in the conditioned space to sense average  
humidity. Carrier Thermidistat device wiring connections are  
shown in Fig. 11. General humidistat wiring connections are  
shown in Fig. 12. Configuration of the unit control is required to  
specify the control input type before unit operation. Refer to the  
5
1
2
TB1  
HUMIDISTAT  
ROOFTOP UNIT  
C07055  
Fig. 11 -- Field Control Thermidistat Wiring  
C07045  
Fig. 12 -- Humidi--MiZer Low--Voltage Terminal Strip -- Humidity Sensor/Humidity Wiring  
10  
C07191  
Fig. 13 -- Third Party Smoke Detector on Humidi--MiZert  
11  
Table 2 – Electrical Data -- Units Without Optional Convenience Outlet  
VOLTAGE  
RANGE  
DISCONNECT  
SIZE  
NOMINAL  
COMPRESSOR  
ELECTRIC HEAT  
POWER SUPPLY  
OFM POWER  
EXHAUST  
IFM  
UNIT  
50PG  
IFM  
FLA  
POWER SUPPLY  
Nominal  
FLA  
TYPE  
FLA  
Min Max  
RLA  
LRA  
FLA  
kW*  
MCA  
MOCP†  
FLA  
LRA  
Volts-Ph-Hz  
—
—
21.9/21.9  
21.9/21.9  
27.8/31.1  
38.6/43.6  
49.5/56.1  
21.9/21.9  
21.9/21.9  
27.8/31.1  
38.6/43.6  
49.5/56.1  
23.3/23.3  
23.3/23.5  
29.5/32.9  
40.4/45.4  
51.3/57.9  
23.3/23.3  
23.3/23.5  
29.5/32.9  
40.4/45.4  
51.3/57.9  
25.2/25.2  
25/25  
25/25  
30/35  
40/45  
50/60  
25/25  
25/25  
30/35  
40/45  
50/60  
25/25  
25/25  
30/35  
45/50  
60/60  
25/25  
25/25  
30/35  
45/50  
60/60  
30/30  
30/30  
30/35  
40/45  
50/60  
80/90  
30/30  
30/30  
30/35  
40/45  
50/60  
80/90  
30/30  
30/30  
30/35  
45/50  
60/60  
80/90  
30/30  
30/30  
30/35  
45/50  
60/60  
80/90  
25/25  
25/25  
25/25  
25/30  
35/40  
45/50  
25/25  
25/25  
25/25  
25/30  
35/40  
45/50  
22/22  
22/22  
26/29  
36/40  
46/52  
22/22  
22/22  
26/29  
36/40  
46/52  
23/23  
23/23  
27/30  
37/42  
47/53  
23/23  
23/23  
27/30  
37/42  
47/53  
24/24  
24/24  
26/29  
36/40  
46/52  
65/75  
24/24  
24/24  
26/29  
36/40  
46/52  
65/75  
26/26  
26/26  
27/30  
37/42  
47/53  
67/76  
26/26  
26/26  
27/30  
37/42  
47/53  
67/76  
20/20  
20/20  
20/20  
23/26  
29/32  
40/45  
20/20  
20/20  
20/20  
23/26  
29/32  
40/45  
74/74  
74/74  
74/74  
74/74  
74/74  
74/74  
74/74  
74/74  
74/74  
74/74  
76/76  
76/76  
76/76  
76/76  
76/76  
76/76  
76/76  
76/76  
76/76  
76/76  
97/97  
97/97  
97/97  
97/97  
97/97  
97/97  
97/97  
97/97  
97/97  
97/97  
97/97  
97/97  
99/99  
99/99  
99/99  
99/99  
99/99  
99/99  
99/99  
99/99  
99/99  
99/99  
99/99  
99/99  
91/91  
91/91  
91/91  
91/91  
91/91  
91/91  
91/91  
91/91  
91/91  
91/91  
91/91  
91/91  
10.8/12.5  
17.3/20.0  
26.0/30.0  
34.7/40.0  
—
2.3/ 3.0  
3.8/ 5.0  
5.6/ 7.5  
7.5/10.0  
—
Low  
High  
Low  
High  
—
10.8/12.5  
17.3/20.0  
26.0/30.0  
34.7/40.0  
—
10.8/12.5  
17.3/20.0  
26.0/30.0  
34.7/40.0  
—
10.8/12.5  
17.3/20.0  
26.0/30.0  
34.7/40.0  
—
10.8/12.5  
17.3/20.0  
26.0/30.0  
34.7/40.0  
2.3/ 3.0  
3.8/ 5.0  
5.6/ 7.5  
7.5/10.0  
—
2.3/ 3.0  
3.8/ 5.0  
5.6/ 7.5  
7.5/10.0  
—
2.3/ 3.0  
3.8/ 5.0  
5.6/ 7.5  
7.5/10.0  
—
2.3/ 3.0 25.2/25.2  
3.8/ 5.0 27.8/31.1  
5.6/ 7.5 38.6/43.6  
7.5/10.0 49.5/56.1  
03  
208/230-1-60  
187  
253  
12.8  
60  
1.0  
4.9  
1.4  
Low  
High  
Low  
High  
Low  
High  
52.0/60.0 11.3/15.0 71.1/81.1  
—-  
—
—
25.2/25.2  
10.8/12.5  
17.3/20.0  
26.0/30.0  
34.7/40.0  
2.3/ 3.0 25.2/25.2  
3.8/ 5.0 27.8/31.1  
5.6/ 7.5 38.6/43.6  
7.5/10.0 49.5/56.1  
52.0/60.0 11.3/15.0 71.1/81.1  
208/230-1-60  
187  
253  
15.4  
83  
1.0  
4.9  
—
—
26.6/26.6  
10.8/12.5  
17.3/20.0  
26.0/30.0  
34.7/40.0  
2.3/ 3.0 26.6/26.6  
3.8/ 5.0 29.5/32.9  
5.6/ 7.5 40.4/45.4  
7.5/10.0 51.3/57.9  
52.0/60.0 11.3/15.0 72.9/82.9  
04  
1.4  
—
—
26.6/26.6  
10.8/12.5  
17.3/20.0  
26.0/30.0  
34.7/40.0  
2.3/ 3.0 26.6/26.6  
3.8/ 5.0 29.5/32.9  
5.6/ 7.5 40.4/45.4  
7.5/10.0 51.3/57.9  
52.0/60.0 11.3/15.0 72.9/82.9  
—
—
20.3/20.3  
6.3/ 7.2  
10.0/11.5  
15.0/17.3  
20.0/23.1  
2.3/ 3.0 20.3/20.3  
3.8/ 5.0 20.3/20.5  
5.6/ 7.5 24.9/27.8  
7.5/10.0 31.1/35.0  
30.0/34.6 11.3/15.0 43.6/49.4  
208/230-3-60  
187  
253  
11.5  
77  
1.0  
—
4.9  
—
—
20.3/20.3  
6.3/ 7.2  
10.0/11.5  
15.0/17.3  
20.0/23.1  
2.3/ 3.0 20.3/20.3  
3.8/ 5.0 20.3/20.5  
5.6/ 7.5 24.9/27.8  
7.5/10.0 31.1/35.0  
30.0/34.6 11.3/15.0 43.6/49.4  
E xamp le : Sup p ly voltag e is 2 3 0 --- 3 --- 6 0  
LEGEND  
FLA  
--- Ful l Lo a d A mp s  
AB = 224 v  
BC = 231 v  
AC = 226 v  
HACR --- Heating, Air Conditioning and Refrigeration  
IFM --- Indoor (Evaporator) Fan Motor  
224 + 231 + 226  
LRA --- Lo ck e d R o t o r A mp s  
Average Voltage =  
3
MCA --- Minimum Circuit Amps  
MOCP --- Maximum Overcurrent Protection  
NEC --- National Electrical Code  
OFM --- Outdoor (Condenser) Fan Motor  
RLA --- Rated Load Amps  
681  
3
=
=
227  
Determine maximum deviation from average voltage.  
(AB) 227 – 224 = 3 v  
(BC) 231 – 227 = 4 v  
(AC) 227 – 226 = 1 v  
Maximum deviation is 4 v.  
Determine percent of voltage imbalance.  
*Heater capacity (kW) is based on heater voltage of 208v, 240v, 480v, or 600v. If power  
distribution voltage to unit varies from rated heater voltage, heater kW will vary accord-  
ingly.  
{
Fuse or HACR circuit breaker.  
4
NOTES:  
% Voltage Imbalance  
=
100 x  
= 1.76%  
This amount of phase imbalance is satisfactory as it is below the maximum allowable 2%.  
1. In compliance with NEC requirements for multimotor and combination load equipment (refer  
to NEC Articles 430 and 440), the overcurrent protective device for the unit shall be fuse or  
HACR breaker. Canadian units may be fuse or circuit breaker.  
2. Unbalanced 3-Phase Supply Voltage  
227  
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.  
IMPORTANT: If the supply voltage phase imbalance is more than 2%, contact your local electric  
utility company immediately.  
max voltage deviation from average voltage  
% Voltage Imbalance  
= 100 x  
average voltage  
12  
Table 2 -- Electrical Data -- Units Without Optional Convenience Outlet (cont)  
VOLTAGE  
RANGE  
DISCONNECT  
SIZE  
NOMINAL  
COMPRESSOR  
ELECTRIC HEAT  
POWER SUPPLY  
OFM  
FLA  
POWER  
EXHAUST  
FLA  
IFM  
POWER SUPPLY  
UNIT  
50PG  
IFM  
FLA  
Nominal  
TYPE  
Min  
Max  
RLA  
LRA  
FLA  
MCA  
MOCP†  
FLA  
LRA  
Volts-Ph-Hz  
kW*  
—
6.3/ 7.2  
10.0/11.5  
15.0/17.3  
20.0/23.1  
30.0/34.6  
—
—
2.3/ 3.0  
3.8/ 5.0  
5.6/ 7.5  
7.5/10.0  
11.3/15.0  
—
21.7/21.7  
21.7/21.7  
21.7/22.3  
26.6/29.5  
32.9/36.8  
45.4/51.1  
21.7/21.7  
21.7/21.7  
21.7/22.3  
26.6/29.5  
32.9/36.8  
45.4/51.1  
9.0  
25/25  
25/25  
25/25  
30/30  
35/40  
50/60  
25/25  
25/25  
25/25  
30/30  
35/40  
50/60  
15  
22/22  
22/22  
22/22  
24/27  
30/34  
42/47  
22/22  
22/22  
22/22  
24/27  
30/34  
42/47  
9
93/93  
93/93  
93/93  
93/93  
93/93  
93/93  
93/93  
93/93  
93/93  
93/93  
93/93  
93/93  
42  
Low  
High  
Low  
High  
Low  
High  
208/230-3-60  
187  
253  
11.5  
77  
1.0  
0.5  
0.5  
1.0  
1.4  
4.9  
2.1  
2.1  
6.3/ 7.2  
10.0/11.5  
15.0/17.3  
20.0/23.1  
30.0/34.6  
—
2.3/ 3.0  
3.8/ 5.0  
5.6/ 7.5  
7.5/10.0  
11.3/15.0  
—
3.5  
3.0  
9.0  
15  
9
42  
5.8  
5.0  
9.9  
15  
9
42  
8.7  
7.5  
13.5  
15  
12  
42  
11.5  
10.0  
17.0  
20  
16  
42  
17.3  
15.0  
24.3  
25  
22  
42  
—
—
—
9.0  
15  
9
42  
3.5  
3.0  
9.0  
15  
9
42  
5.8  
5.0  
9.9  
15  
9
42  
8.7  
7.5  
13.5  
15  
12  
42  
11.5  
10.0  
17.0  
20  
16  
42  
04  
(cont)  
17.3  
15.0  
24.3  
25  
22  
42  
460-3-60  
414  
518  
187  
506  
633  
253  
5.1  
35  
—
—
9.6  
15  
10  
43  
3.5  
3.0  
9.6  
15  
10  
43  
5.8  
5.0  
10.6  
15  
10  
43  
8.7  
7.5  
14.3  
15  
13  
43  
11.5  
10.0  
17.8  
20  
16  
43  
17.3  
15.0  
25.0  
30  
23  
43  
0.6  
—
—
9.6  
15  
10  
43  
3.5  
3.0  
9.6  
15  
10  
43  
5.8  
5.0  
10.6  
15  
10  
43  
8.7  
7.5  
14.3  
15  
13  
43  
11.5  
10.0  
17.8  
20  
16  
43  
17.3  
15.0  
25.0  
30  
23  
43  
—
—
8.0  
15  
8
37  
9.2  
10.0  
14.1  
15  
13  
37  
Low  
High  
Low  
High  
13.9  
15.0  
20.0  
25  
18  
37  
—
—
—
8.0  
15  
8
37  
9.2  
10.0  
14.1  
15  
13  
37  
13.9  
15.0  
20.0  
25  
18  
37  
575-3-60  
4.3  
31  
—
—
9.4  
15  
10  
39  
9.2  
10.0  
15.9  
20  
15  
39  
13.9  
15.0  
21.8  
25  
20  
39  
1.4  
—
—
9.4  
15  
10  
39  
9.2  
10.0  
15.9  
20  
15  
39  
13.9  
15.0  
21.8  
25  
20  
39  
—
—
31.5/ 31.5  
31.5/ 31.5  
38.6/ 43.6  
49.5/ 56.1  
71.1/ 81.1  
92.8/106.1  
33.6/ 33.6  
33.6/ 33.8  
41.3/ 46.3  
52.1/ 58.8  
73.8/ 83.8  
95.4/108.8  
32.9/ 32.9  
32.9/ 32.9  
40.4/ 45.4  
51.3/ 57.9  
72.9/ 82.9  
94.5/107.9  
35.0/ 35.5  
35.0/ 35.5  
43.0/ 48.0  
53.9/ 60.5  
75.5/ 85.5  
97.1/110.5  
24.2/24.2  
24.2/24.2  
24.9/27.8  
31.1/35.0  
43.6/49.4  
56.1/63.9  
24.5/24.5  
24.5/24.5  
25.3/28.1  
31.5/35.4  
44.0/49.8  
56.5/64.3  
25.6/25.6  
25.6/25.6  
26.6/29.5  
32.9/36.8  
45.4/51.1  
57.9/65.6  
25.9/25.9  
25.9/25.9  
27.0/29.9  
33.3/37.1  
45.8/51.5  
58.3/66.0  
35/ 35  
35/ 35  
40/ 45  
50/ 60  
80/ 90  
100/110  
30/30 123/123  
30/30 123/123  
36/40 123/123  
46/52 123/123  
65/75 123/123  
85/98 123/123  
17.3/20.0  
26.0/30.0  
34.7/40.0  
52.0/60.0  
69.3/80.0  
—
3.8/ 5.0  
5.6/ 7.5  
7.5/10.0  
11.3/15.0  
15.0/20.0  
—
Low  
High  
Low  
High  
Low  
High  
4.9  
7.0  
4.9  
7.0  
4.9  
5.2  
—
1.4  
—
35/ 35 33/ 33 148/148  
35/ 35 33/ 33 148/148  
45/ 50 38/ 43 148/148  
60/ 60 48/ 54 148/148  
80/ 90 68/ 77 148/148  
100/110 88/100 148/148  
35/ 35  
35/ 35  
45/ 50  
60/ 60  
80/ 90  
100/110  
40/ 40 34/ 34 150/150  
40/ 40 34/ 34 150/150  
45/ 50 40/ 44 150/150  
60/ 70 50/ 56 150/150  
80/ 90 69/ 79 150/150  
100/125 89/102 150/150  
25/25  
25/25  
25/30  
35/40  
45/50  
60/70  
25/25  
25/25  
30/30  
35/40  
45/50  
60/70  
30/30  
30/30  
30/30  
35/40  
50/60  
60/70  
30/30  
30/30  
30/30  
35/40  
50/60  
60/70  
17.3/20.0  
26.0/30.0  
34.7/40.0  
52.0/60.0  
69.3/80.0  
—
17.3/20.0  
26.0/30.0  
34.7/40.0  
52.0/60.0  
69.3/80.0  
—
17.3/20.0  
26.0/30.0  
34.7/40.0  
52.0/60.0  
69.3/80.0  
—
10.0/11.5  
15.0/17.3  
20.0/23.1  
30.0/34.6  
40.0/46.2  
—
10.0/11.5  
15.0/17.3  
20.0/23.1  
30.0/34.6  
40.0/46.2  
—
10.0/11.5  
15.0/17.3  
20.0/23.1  
30.0/34.6  
40.0/46.2  
—
10.0/11.5  
15.0/17.3  
20.0/23.1  
30.0/34.6  
40.0/46.2  
3.8/ 5.0  
5.6/ 7.5  
7.5/10.0  
11.3/15.0  
15.0/20.0  
—
3.8/ 5.0  
5.6/ 7.5  
7.5/10.0  
11.3/15.0  
15.0/20.0  
—
3.8/ 5.0  
5.6/ 7.5  
7.5/10.0  
11.3/15.0  
15.0/20.0  
—
3.8/ 5.0  
5.6/ 7.5  
7.5/10.0  
11.3/15.0  
15.0/20.0  
—
3.8/ 5.0  
5.6/ 7.5  
7.5/10.0  
11.3/15.0  
15.0/20.0  
—
3.8/ 5.0  
5.6/ 7.5  
7.5/10.0  
11.3/15.0  
15.0/20.0  
—
3.8/ 5.0  
5.6/ 7.5  
7.5/10.0  
11.3/15.0  
15.0/20.0  
208/230-1-60  
20.5  
109  
32/32 125/125  
32/32 125/125  
37/42 125/125  
47/53 125/125  
67/76 125/125  
87/99 125/125  
05  
24/24 105/105  
24/24 105/105  
24/26 105/105  
29/32 105/105  
40/45 105/105  
52/59 105/105  
24/24 123/123  
24/24 123/123  
24/26 123/123  
29/33 123/123  
40/46 123/123  
52/59 123/123  
25/25 107/107  
25/25 107/107  
25/27 107/107  
30/34 107/107  
42/47 107/107  
53/60 107/107  
26/26 125/125  
26/26 125/125  
26/27 125/125  
31/34 125/125  
42/47 125/125  
54/61 125/125  
208/230-3-60  
187  
253  
14.6  
91  
1.0  
Low  
4.9  
5.2  
High  
*See Legend on next page.  
13  
Table 2 -- Electrical Data -- Units Without Optional Convenience Outlet (cont)  
VOLTAGE  
RANGE  
DISCONNECT  
SIZE  
NOMINAL  
COMPRESSOR  
ELECTRIC HEAT  
POWER SUPPLY  
OFM  
FLA  
POWER  
EXHAUST  
FLA  
IFM  
POWER SUPPLY  
UNIT  
50PG  
IFM  
FLA  
Nominal  
TYPE  
Min  
Max  
RLA  
LRA  
FLA  
MCA  
MOCP†  
FLA  
LRA  
Volts-Ph-Hz  
kW*  
—
5.8  
—
5.0  
11.5  
11.5  
15  
15  
11  
11  
12  
16  
22  
29  
12  
12  
13  
16  
23  
30  
12  
12  
13  
16  
23  
30  
12  
12  
14  
17  
24  
30  
9
53  
53  
53  
53  
53  
53  
62  
62  
62  
62  
62  
62  
54  
54  
54  
54  
54  
54  
63  
63  
63  
63  
63  
63  
40  
40  
40  
40  
46  
46  
46  
46  
42  
42  
42  
42  
48  
48  
48  
48  
8.7  
7.5  
13.5  
15  
Low  
High  
Low  
High  
2.1  
2.6  
2.1  
2.6  
11.5  
10.0  
15.0  
20.0  
—
5.0  
7.5  
10.0  
15.0  
20.0  
—
5.0  
7.5  
10.0  
15.0  
20.0  
—
5.0  
7.5  
10.0  
15.0  
20.0  
—
10.0  
15.0  
20.0  
—
10.0  
15.0  
20.0  
—
10.0  
15.0  
20.0  
—
10.0  
15.0  
20.0  
—
3.8/ 5.0  
5.6/ 7.5  
7.5/10.0  
11.3/15.0  
15.0/20.0  
17.0  
20  
17.3  
24.3  
25  
23.1  
31.5  
35  
—
—
12.0  
15  
5.8  
12.0  
15  
8.7  
14.1  
15  
11.5  
17.6  
20  
17.3  
24.9  
25  
23.1  
32.1  
35  
460-3-60  
414  
506  
7.1  
46  
0.5  
—
12.1  
15  
5.8  
12.1  
15  
8.7  
14.3  
15  
11.5  
17.8  
20  
17.3  
25.0  
30  
23.1  
32.3  
35  
0.6  
—
12.6  
15  
05  
(cont)  
5.8  
12.6  
15  
8.7  
14.9  
15  
11.5  
18.4  
20  
17.3  
25.6  
30  
23.1  
32.9  
35  
—
9.0  
15  
9.2  
14.1  
15  
13  
18  
24  
9
Low  
High  
Low  
High  
2.1  
2.0  
2.1  
2.0  
13.9  
20.0  
25  
18.5  
25.8  
30  
—
—
8.9  
15  
9.2  
14.0  
15  
13  
18  
24  
10  
15  
20  
25  
10  
14  
20  
25  
13.9  
19.9  
20  
18.5  
25.6  
30  
575-3-60  
518  
633  
5.1  
34  
0.5  
—
10.4  
15  
9.2  
15.9  
20  
13.9  
21.8  
25  
18.5  
27.5  
30  
1.4  
—
10.3  
15  
9.2  
15.8  
20  
13.9  
21.6  
25  
18.5  
27.4  
30  
—
40.0/ 40.0  
40.0/ 40.0  
40.0/ 43.6  
49.5/ 56.1  
71.1/ 81.1  
45/ 45  
45/ 45  
45/ 45  
50/ 60  
80/ 90  
38/38 160/160  
38/38 160/160  
38/40 160/160  
46/52 160/160  
65/75 160/160  
85/98 160/160  
17.3/ 20.0  
26.0/ 30.0  
34.7/ 40.0  
52.0/ 60.0  
69.3/ 80.0  
86.7/100.0  
—
Low  
High  
Low  
High  
4.9  
7.0  
4.9  
7.0  
92.8/106.1 100/110  
18.8/25.0 114.5/131.1 125/150 105/121 160/160  
—
—
42.1/ 42.1  
42.1/ 42.1  
42.1/ 46.3  
52.1/ 58.8  
73.8/ 83.8  
45/ 45  
45/ 45  
45/ 50  
60/ 60  
80/ 90  
41/41 185/185  
41/41 185/185  
41/43 185/185  
48/54 185/185  
68/77 185/185  
88/100 185/185  
17.3/ 20.0  
26.0/ 30.0  
34.7/ 40.0  
52.0/ 60.0  
69.3/ 80.0  
86.7/100.0  
—
17.3/ 20.0  
26.0/ 30.0  
34.7/ 40.0  
52.0/ 60.0  
69.3/ 80.0  
86.7/100.0  
—
17.3/ 20.0  
26.0/ 30.0  
34.7/ 40.0  
52.0/ 60.0  
69.3/ 80.0  
86.7/100.0  
3.8/ 5.0  
5.6/ 7.5  
7.5/10.0  
11.3/15.0  
15.0/20.0  
95.4/108.8 100/110  
18.8/25.0 117.1/133.8 125/150 108/123 185/185  
—
06  
208/230-1-60  
187  
253  
26.9  
145  
1.5  
41.4/ 41.4  
41.4/ 41.4  
41.4/ 45.4  
51.3/ 57.9  
72.9/ 82.9  
45/ 45  
45/ 45  
45/ 50  
60/ 60  
80/ 90  
40/40 162/162  
40/40 162/162  
40/42 162/162  
47/53 162/162  
67/76 162/162  
87/99 162/162  
3.8/ 5.0  
5.6/ 7.5  
7.5/10.0  
11.3/15.0  
15.0/20.0  
94.5/107.9 100/110  
18.8/25.0 116.3/132.9 125/150 107/122 162/162  
—
1.4  
43.5/ 43.5  
43.5/ 43.5  
43.5/ 48.0  
53.9/ 60.5  
75.5/ 85.5  
50/ 50  
50/ 50  
50/ 50  
60/ 70  
80/ 90  
42/42 187/187  
42/42 187/187  
42/44 187/187  
50/56 187/187  
69/79 187/187  
89/102 187/187  
3.8/ 5.0  
5.6/ 7.5  
7.5/10.0  
11.3/15.0  
15.0/20.0  
97.1/110.5 100/125  
18.8/25.0 118.9/135.5 125/150 109/125 187/187  
E xamp le : Sup p ly voltag e is 2 3 0 --- 3 --- 6 0  
LEGEND  
FLA  
--- Ful l Lo a d A mp s  
AB = 224 v  
BC = 231 v  
AC = 226 v  
HACR --- Heating, Air Conditioning and Refrigeration  
IFM --- Indoor (Evaporator) Fan Motor  
224 + 231 + 226  
3
LRA --- Lo ck e d R o t o r A mp s  
Average Voltage =  
MCA --- Minimum Circuit Amps  
MOCP --- Maximum Overcurrent Protection  
NEC --- National Electrical Code  
OFM --- Outdoor (Condenser) Fan Motor  
RLA --- Rated Load Amps  
681  
3
=
=
227  
Determine maximum deviation from average voltage.  
(AB) 227 – 224 = 3 v  
(BC) 231 – 227 = 4 v  
(AC) 227 – 226 = 1 v  
Maximum deviation is 4 v.  
Determine percent of voltage imbalance.  
*Heater capacity (kW) is based on heater voltage of 208v, 240v, 480v, or 600v. If power  
distribution voltage to unit varies from rated heater voltage, heater kW will vary accord-  
ingly.  
{
Fuse or HACR circuit breaker.  
4
NOTES:  
% Voltage Imbalance  
=
100 x  
227  
1. In compliance with NEC requirements for multimotor and combination load equipment (refer  
to NEC Articles 430 and 440), the overcurrent protective device for the unit shall be fuse or  
HACR breaker. Canadian units may be fuse or circuit breaker.  
2. Unbalanced 3-Phase Supply Voltage  
= 1.76%  
This amount of phase imbalance is satisfactory as it is below the maximum allowable 2%.  
IMPORTANT: If the supply voltage phase imbalance is more than 2%, contact your local electric  
utility company immediately.  
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.  
max voltage deviation from average voltage  
% Voltage Imbalance  
= 100 x  
average voltage  
14  
Table 2 -- Electrical Data -- Units Without Optional Convenience Outlet (cont)  
VOLTAGE  
RANGE  
DISCONNECT  
SIZE  
NOMINAL  
COMPRESSOR  
ELECTRIC HEAT  
POWER SUPPLY  
OFM  
FLA  
IFM  
POWER  
EXHAUST  
FLA  
UNIT  
50PG  
IFM  
FLA  
POWER SUPPLY  
Nominal  
TYPE  
Min  
Max  
RLA  
LRA  
FLA  
MCA  
MOCP†  
FLA  
LRA  
Volts-Ph-Hz  
kW*  
—
10.0/11.5  
15.0/17.3  
20.0/23.1  
30.0/34.6  
40.0/46.2  
50.0/57.7  
—
10.0/11.5  
15.0/17.3  
20.0/23.1  
30.0/34.6  
40.0/46.2  
50.0/57.7  
—
10.0/11.5  
15.0/17.3  
20.0/23.1  
30.0/34.6  
40.0/46.2  
50.0/57.7  
—
—
3.8/ 5.0  
5.6/ 7.5  
7.5/10.0  
11.3/15.0  
15.0/20.0  
18.8/25.0  
—
3.8/ 5.0  
5.6/ 7.5  
7.5/10.0  
11.3/15.0  
15.0/20.0  
18.8/25.0  
—
3.8/ 5.0  
5.6/ 7.5  
7.5/10.0  
11.3/15.0  
15.0/20.0  
18.8/25.0  
—
28.7/28.7  
28.7/28.7  
28.7/28.7  
31.5/35.4  
44.0/49.8  
56.5/64.3  
69.0/78.6  
28.7/28.7  
28.7/28.7  
28.7/28.7  
31.5/35.4  
44.0/49.8  
56.5/64.3  
69.0/78.6  
30.1/30.1  
30.1/30.1  
30.1/30.1  
33.3/37.1  
45.8/51.5  
58.3/66.0  
70.8/80.4  
30.1/30.1  
30.1/30.1  
30.1/30.1  
33.3/37.1  
45.8/51.5  
58.3/66.0  
70.8/80.4  
13.0  
30/30  
30/30  
30/30  
35/40  
45/50  
60/70  
70/80  
30/30  
30/30  
30/30  
35/40  
45/50  
60/70  
70/80  
35/35  
35/35  
35/35  
35/40  
50/60  
60/70  
80/90  
35/35  
35/35  
35/35  
35/40  
50/60  
60/70  
80/90  
15  
28/28 156/156  
28/28 156/156  
28/28 156/156  
29/33 156/156  
40/46 156/156  
52/59 156/156  
63/72 156/156  
28/28 156/156  
28/28 156/156  
28/28 156/156  
29/33 156/156  
40/46 156/156  
52/59 156/156  
63/72 156/156  
30/30 158/158  
30/30 158/158  
30/30 158/158  
31/34 158/158  
42/47 158/158  
54/61 158/158  
65/74 158/158  
30/30 158/158  
30/30 158/158  
30/30 158/158  
31/34 158/158  
42/47 158/158  
54/61 158/158  
65/74 158/158  
Low  
High  
Low  
High  
Low  
High  
Low  
High  
—
1.4  
—
208/230-3-60  
187  
253  
17.6  
123  
1.5  
5.2  
10.0/11.5  
15.0/17.3  
20.0/23.1  
30.0/34.6  
40.0/46.2  
50.0/57.7  
—
3.8/ 5.0  
5.6/ 7.5  
7.5/10.0  
11.3/15.0  
15.0/20.0  
18.8/25.0  
—
13  
13  
13  
16  
23  
30  
36  
13  
13  
13  
16  
23  
30  
36  
13  
13  
14  
17  
24  
30  
37  
13  
13  
14  
17  
24  
30  
37  
10  
13  
18  
24  
29  
10  
13  
18  
24  
29  
12  
14  
20  
25  
30  
12  
14  
20  
25  
30  
67  
67  
67  
67  
67  
67  
67  
67  
67  
67  
67  
67  
67  
67  
68  
68  
68  
68  
68  
68  
68  
68  
68  
68  
68  
68  
68  
68  
53  
53  
53  
53  
53  
53  
53  
53  
53  
53  
55  
55  
55  
55  
55  
55  
55  
55  
55  
55  
5.8  
5.0  
13.0  
15  
8.7  
7.5  
14.1  
15  
11.5  
10.0  
17.6  
20  
17.3  
15.0  
24.9  
25  
23.1  
20.0  
32.1  
35  
28.9  
25.0  
39.4  
40  
—
—
13.0  
15  
5.8  
5.0  
13.0  
15  
06  
(cont)  
8.7  
7.5  
14.1  
15  
11.5  
10.0  
17.6  
20  
17.3  
15.0  
24.9  
25  
23.1  
20.0  
32.1  
35  
28.9  
25.0  
39.4  
40  
460-3-60  
414  
506  
7.7  
50  
0.8  
2.6  
—
—
13.6  
15  
5.8  
5.0  
13.6  
15  
8.7  
7.5  
14.9  
15  
11.5  
10.0  
18.4  
20  
17.3  
15.0  
25.6  
30  
23.1  
20.0  
32.9  
35  
28.9  
25.0  
40.1  
45  
0.6  
—
—
13.6  
15  
5.8  
5.0  
13.6  
15  
8.7  
7.5  
14.9  
15  
11.5  
10.0  
18.4  
20  
17.3  
15.0  
25.6  
30  
23.1  
20.0  
32.9  
35  
28.9  
25.0  
40.1  
45  
—
—
10.4  
15  
9.2  
10.0  
14.0  
15  
13.9  
15.0  
19.9  
20  
Low  
High  
Low  
High  
18.5  
20.0  
25.6  
30  
23.1  
25.0  
31.4  
35  
—
—
—
10.4  
15  
9.2  
10.0  
14.0  
15  
13.9  
15.0  
19.9  
20  
18.5  
20.0  
25.6  
30  
23.1  
25.0  
31.4  
35  
575-3-60  
518  
633  
6.1  
40  
0.8  
2.0  
—
—
11.8  
15  
9.2  
10.0  
15.8  
20  
13.9  
15.0  
21.6  
25  
18.5  
20.0  
27.4  
30  
23.1  
25.0  
33.1  
35  
1.4  
—
—
11.8  
15  
9.2  
10.0  
15.8  
20  
13.9  
15.0  
21.6  
25  
18.5  
20.0  
27.4  
30  
23.1  
25.0  
33.1  
35  
—
—
32.3/32.3  
32.3/32.3  
32.3/32.3  
32.3/35.4  
44.0/49.8  
56.5/64.3  
69.0/78.6  
34.6/34.6  
34.6/34.6  
34.6/34.6  
34.6/38.3  
46.9/52.6  
59.4/67.1  
71.9/81.5  
35/35  
35/35  
35/35  
35/40  
45/50  
60/70  
70/80  
35/35  
35/35  
35/35  
35/40  
50/60  
60/70  
80/90  
31/31 182/182  
31/31 182/182  
31/31 182/182  
31/33 182/182  
40/46 182/182  
52/59 182/182  
63/72 182/182  
34/34 208/208  
34/34 208/208  
34/34 208/208  
34/35 208/208  
43/48 208/208  
55/62 208/208  
66/75 208/208  
10.0/11.5  
15.0/17.3  
20.0/23.1  
30.0/34.6  
40.0/46.2  
50.0/57.7  
—
3.8/ 5.0  
5.6/ 7.5  
7.5/10.0  
11.3/15.0  
15.0/20.0  
18.8/25.0  
—
Low  
5.2  
7.5  
07  
208/230-3-60  
187  
253  
20.5  
149  
1.5  
—
10.0/11.5  
15.0/17.3  
20.0/23.1  
30.0/34.6  
40.0/46.2  
50.0/57.7  
3.8/ 5.0  
5.6/ 7.5  
7.5/10.0  
11.3/15.0  
15.0/20.0  
18.8/25.0  
High  
* See Legend on next page.  
15  
Table 2 -- Electrical Data -- Units Without Optional Convenience Outlet (cont)  
VOLTAGE  
RANGE  
DISCONNECT  
SIZE  
NOMINAL  
COMPRESSOR  
ELECTRIC HEAT  
POWER SUPPLY  
OFM  
FLA  
IFM  
POWER  
EXHAUST  
FLA  
UNIT  
50PG  
IFM  
FLA  
POWER SUPPLY  
Nominal  
TYPE  
Min  
Max  
RLA  
LRA  
FLA  
MCA  
MOCP†  
FLA  
LRA  
Volts-Ph-Hz  
kW*  
—
10.0/11.5  
15.0/17.3  
20.0/23.1  
30.0/34.6  
40.0/46.2  
50.0/57.7  
—
—
3.8/ 5.0  
5.6/ 7.5  
7.5/10.0  
11.3/15.0  
15.0/20.0  
18.8/25.0  
—
3.8/ 5.0  
5.6/ 7.5  
7.5/10.0  
11.3/15.0  
15.0/20.0  
18.8/25.0  
—
5.0  
7.5  
10.0  
15.0  
20.0  
25.0  
—
5.0  
7.5  
10.0  
15.0  
20.0  
25.0  
—
5.0  
7.5  
10.0  
15.0  
20.0  
25.0  
—
5.0  
7.5  
10.0  
15.0  
20.0  
25.0  
—
10.0  
15.0  
20.0  
25.0  
30.0  
—
10.0  
15.0  
20.0  
25.0  
30.0  
—
10.0  
15.0  
20.0  
25.0  
30.0  
—
10.0  
15.0  
20.0  
25.0  
30.0  
33.7/33.7  
33.7/33.7  
33.7/33.7  
33.7/37.1  
45.8/51.5  
58.3/66.0  
70.8/80.4  
36.0/36.0  
36.0/36.0  
36.0/36.0  
36.1/40.0  
48.6/54.4  
61.1/68.9  
73.6/83.3  
15.4  
35/35  
35/35  
35/35  
35/40  
50/60  
60/70  
80/90  
40/40  
40/40  
40/40  
40/45  
50/60  
70/70  
80/90  
20  
33/33 184/184  
33/33 184/184  
33/33 184/184  
33/34 184/184  
42/47 184/184  
54/61 184/184  
65/74 184/184  
36/36 210/210  
36/36 210/210  
36/36 210/210  
36/37 210/210  
45/50 210/210  
56/63 210/210  
68/77 210/210  
Low  
High  
Low  
High  
Low  
High  
5.2  
7.5  
2.6  
3.4  
2.6  
3.4  
208/230-3-60  
187  
253  
20.5  
149  
1.5  
1.4  
10.0/11.5  
15.0/17.3  
20.0/23.1  
30.0/34.6  
40.0/46.2  
50.0/57.7  
—
15  
15  
15  
16  
23  
30  
36  
16  
16  
16  
17  
24  
30  
37  
16  
16  
16  
17  
24  
30  
37  
17  
17  
17  
18  
24  
31  
38  
12  
13  
18  
24  
29  
34  
13  
14  
19  
24  
30  
35  
14  
14  
20  
25  
30  
36  
14  
15  
21  
26  
31  
37  
92  
92  
5.8  
8.7  
15.4  
20  
15.4  
20  
92  
11.5  
17.3  
23.1  
28.9  
—
17.6  
20  
92  
24.9  
25  
92  
32.1  
35  
92  
39.4  
40  
92  
—
16.2  
20  
105  
105  
105  
105  
105  
105  
105  
93  
5.8  
8.7  
16.2  
20  
16.2  
20  
11.5  
17.3  
23.1  
28.9  
—
18.6  
20  
25.9  
30  
33.1  
35  
40.4  
45  
460-3-60  
414  
506  
9.6  
75  
0.8  
16.0  
20  
5.8  
8.7  
16.0  
20  
93  
16.0  
20  
93  
11.5  
17.3  
23.1  
28.9  
—
18.4  
20  
93  
07  
(cont)  
25.6  
30  
93  
32.9  
35  
93  
40.1  
45  
93  
0.6  
16.8  
20  
106  
106  
106  
106  
106  
106  
106  
67  
5.8  
8.7  
16.8  
20  
16.8  
20  
11.5  
17.3  
23.1  
28.9  
—
19.4  
20  
26.6  
30  
33.9  
35  
41.1  
45  
12.3  
15  
9.2  
14.0  
15  
67  
13.9  
18.5  
23.1  
27.7  
—
19.9  
20  
67  
Low  
High  
Low  
High  
2.0  
2.8  
2.0  
2.8  
25.6  
30  
67  
31.4  
35  
67  
37.1  
40  
67  
—
13.1  
15  
78  
9.2  
15.0  
15  
78  
13.9  
18.5  
23.1  
27.7  
—
20.9  
25  
78  
26.6  
30  
78  
32.4  
35  
78  
38.1  
40  
78  
575-3-60  
518  
633  
7.6  
54  
0.8  
13.7  
15  
69  
9.2  
15.8  
20  
69  
13.9  
18.5  
23.1  
27.7  
—
21.6  
25  
69  
27.4  
30  
69  
33.1  
35  
69  
38.9  
40  
69  
1.4  
14.5  
15  
80  
9.2  
16.8  
20  
80  
13.9  
18.5  
23.1  
27.7  
22.6  
25  
80  
28.4  
30  
80  
34.1  
35  
80  
39.9  
40  
80  
E xamp le : Sup p ly voltag e is 2 3 0 --- 3 --- 6 0  
LEGEND  
FLA  
--- Ful l Lo a d A mp s  
AB = 224 v  
BC = 231 v  
AC = 226 v  
HACR --- Heating, Air Conditioning and Refrigeration  
IFM --- Indoor (Evaporator) Fan Motor  
224 + 231 + 226  
3
LRA --- Lo ck e d R o t o r A mp s  
Average Voltage =  
MCA --- Minimum Circuit Amps  
MOCP --- Maximum Overcurrent Protection  
NEC --- National Electrical Code  
OFM --- Outdoor (Condenser) Fan Motor  
RLA --- Rated Load Amps  
681  
3
=
=
227  
Determine maximum deviation from average voltage.  
(AB) 227 – 224 = 3 v  
(BC) 231 – 227 = 4 v  
(AC) 227 – 226 = 1 v  
Maximum deviation is 4 v.  
Determine percent of voltage imbalance.  
*Heater capacity (kW) is based on heater voltage of 208v, 240v, 480v, or 600v. If power  
distribution voltage to unit varies from rated heater voltage, heater kW will vary accord-  
ingly.  
{
Fuse or HACR circuit breaker.  
4
NOTES:  
% Voltage Imbalance  
=
100 x  
= 1.76%  
This amount of phase imbalance is satisfactory as it is below the maximum allowable 2%.  
227  
1. In compliance with NEC requirements for multimotor and combination load equipment (refer  
to NEC Articles 430 and 440), the overcurrent protective device for the unit shall be fuse or  
HACR breaker. Canadian units may be fuse or circuit breaker.  
2. Unbalanced 3-Phase Supply Voltage  
IMPORTANT: If the supply voltage phase imbalance is more than 2%, contact your local electric  
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.  
utility company immediately.  
max voltage deviation from average voltage  
% Voltage Imbalance  
= 100 x  
average voltage  
16  
Table 3 – Electrical Data -- Units With Optional Powered Convenience Outlet  
VOLTAGE  
RANGE  
DISCONNECT  
SIZE  
NOMINAL  
COMPRESSOR  
ELECTRIC HEAT  
POWER SUPPLY  
OFM  
FLA  
IFM  
POWER  
EXHAUST  
FLA  
UNIT  
50PG  
IFM  
FLA  
POWER SUPPLY  
Nominal  
TYPE  
Min  
Max  
RLA  
LRA  
FLA  
MCA  
MOCP†  
FLA  
LRA  
Volts-Ph-Hz  
kW*  
—
—
26.7/26.7  
26.7/27.8  
33.8/37.1  
44.6/49.6  
55.5/62.1  
26.7/26.7  
26.7/27.8  
33.8/37.1  
44.6/49.6  
55.5/62.1  
28.1/28.1  
28.1/29.5  
35.5/38.9  
46.4/51.4  
57.3/63.9  
28.1/28.1  
28.1/29.5  
35.5/38.9  
46.4/51.4  
57.3/63.9  
30.0/30.0  
30.0/30.0  
33.8/37.1  
44.6/49.6  
55.5/62.1  
77.1/87.1  
30.0/30.0  
30.0/30.0  
33.8/37.1  
44.6/49.6  
55.5/62.1  
77.1/87.1  
31.4/31.4  
31.4/31.4  
35.5/38.9  
46.4/51.4  
57.3/63.9  
78.9/88.9  
31.4/31.4  
31.4/31.4  
35.5/38.9  
46.4/51.4  
57.3/63.9  
78.9/88.9  
25.1/25.1  
25.1/25.1  
25.1/26.5  
30.9/33.8  
37.1/41.0  
49.6/55.4  
25.1/25.1  
25.1/25.1  
25.1/26.5  
30.9/33.8  
37.1/41.0  
49.6/55.4  
30/30  
30/30  
35/40  
45/50  
60/70  
30/30  
30/30  
35/40  
45/50  
60/70  
30/30  
30/30  
40/40  
50/60  
60/70  
30/30  
30/30  
40/40  
50/60  
60/70  
30/30  
30/30  
35/40  
45/50  
60/70  
80/90  
30/30  
30/30  
35/40  
45/50  
60/70  
80/90  
35/35  
35/35  
40/40  
50/60  
60/70  
80/90  
35/35  
35/35  
40/40  
50/60  
60/70  
80/90  
30/30  
30/30  
30/30  
35/35  
40/45  
50/60  
30/30  
30/30  
30/30  
35/35  
40/45  
50/60  
27/27  
27/27  
31/34  
41/46  
51/57  
27/27  
27/27  
31/34  
41/46  
51/57  
29/29  
29/29  
33/36  
43/47  
53/59  
29/29  
29/29  
33/36  
43/47  
53/59  
30/30 102/102  
30/30 102/102  
31/34 102/102  
41/46 102/102  
51/57 102/102  
71/80 102/102  
30/30 102/102  
30/30 102/102  
31/34 102/102  
41/46 102/102  
51/57 102/102  
71/80 102/102  
32/32 104/104  
32/32 104/104  
33/36 104/104  
43/47 104/104  
53/59 104/104  
73/82 104/104  
32/32 104/104  
32/32 104/104  
33/36 104/104  
43/47 104/104  
53/59 104/104  
73/82 104/104  
79/79  
79/79  
79/79  
79/79  
79/79  
79/79  
79/79  
79/79  
79/79  
79/79  
81/81  
81/81  
81/81  
81/81  
81/81  
81/81  
81/81  
81/81  
81/81  
81/81  
10.8/12.5  
17.3/20.0  
26.0/30.0  
34.7/40.0  
—
2.3/ 3.0  
3.8/ 5.0  
5.6/ 7.5  
7.5/10.0  
—
Low  
High  
Low  
High  
—
10.8/12.5  
17.3/20.0  
26.0/30.0  
34.7/40.0  
—
10.8/12.5  
17.3/20.0  
26.0/30.0  
34.7/40.0  
—
10.8/12.5  
17.3/20.0  
26.0/30.0  
34.7/40.0  
—
10.8/12.5  
17.3/20.0  
26.0/30.0  
34.7/40.0  
52.0/60.0  
—
10.8/12.5  
17.3/20.0  
26.0/30.0  
34.7/40.0  
52.0/60.0  
—
10.8/12.5  
17.3/20.0  
26.0/30.0  
34.7/40.0  
52.0/60.0  
—
10.8/12.5  
17.3/20.0  
26.0/30.0  
34.7/40.0  
52.0/60.0  
—
6.3/ 7.2  
10.0/11.5  
15.0/17.3  
20.0/23.1  
30.0/34.6  
—
2.3/ 3.0  
3.8/ 5.0  
5.6/ 7.5  
7.5/10.0  
—
2.3/ 3.0  
3.8/ 5.0  
5.6/ 7.5  
7.5/10.0  
—
2.3/ 3.0  
3.8/ 5.0  
5.6/ 7.5  
7.5/10.0  
—
2.3/ 3.0  
3.8/ 5.0  
5.6/ 7.5  
7.5/10.0  
11.3/15.0  
—
2.3/ 3.0  
3.8/ 5.0  
5.6/ 7.5  
7.5/10.0  
11.3/15.0  
—
2.3/ 3.0  
3.8/ 5.0  
5.6/ 7.5  
7.5/10.0  
11.3/15.0  
—
2.3/ 3.0  
3.8/ 5.0  
5.6/ 7.5  
7.5/10.0  
11.3/15.0  
—
2.3/ 3.0  
3.8/ 5.0  
5.6/ 7.5  
7.5/10.0  
11.3/15.0  
—
03  
208/230-1-60  
187  
253  
12.8  
60  
1.0  
4.9  
1.4  
Low  
High  
Low  
High  
Low  
High  
—
1.4  
—
208/230-1-60  
187  
253  
15.4  
83  
1.0  
4.9  
04  
26/26  
26/26  
26/26  
28/31  
34/38  
46/51  
26/26  
26/26  
26/26  
28/31  
34/38  
46/51  
96/96  
96/96  
96/96  
96/96  
96/96  
96/96  
96/96  
96/96  
96/96  
96/96  
96/96  
96/96  
208/230-3-60  
187  
253  
11.5  
77  
1.0  
4.9  
6.3/ 7.2  
10.0/11.5  
15.0/17.3  
20.0/23.1  
30.0/34.6  
2.3/ 3.0  
3.8/ 5.0  
5.6/ 7.5  
7.5/10.0  
11.3/15.0  
E xamp le : Sup p ly voltag e is 2 3 0 --- 3 --- 6 0  
LEGEND  
FLA  
--- Ful l Lo a d A mp s  
AB = 224 v  
BC = 231 v  
AC = 226 v  
HACR --- Heating, Air Conditioning and Refrigeration  
IFM --- Indoor (Evaporator) Fan Motor  
224 + 231 + 226  
3
LRA --- Lo ck e d R o t o r A mp s  
Average Voltage =  
MCA --- Minimum Circuit Amps  
MOCP --- Maximum Overcurrent Protection  
NEC --- National Electrical Code  
OFM --- Outdoor (Condenser) Fan Motor  
RLA --- Rated Load Amps  
681  
3
=
=
227  
Determine maximum deviation from average voltage.  
(AB) 227 – 224 = 3 v  
(BC) 231 – 227 = 4 v  
(AC) 227 – 226 = 1 v  
Maximum deviation is 4 v.  
Determine percent of voltage imbalance.  
*Heater capacity (kW) is based on heater voltage of 208v, 240v, 480v, or 600v. If power  
distribution voltage to unit varies from rated heater voltage, heater kW will vary accord-  
ingly.  
{
Fuse or HACR circuit breaker.  
4
NOTES:  
% Voltage Imbalance  
=
100 x  
= 1.76%  
This amount of phase imbalance is satisfactory as it is below the maximum allowable 2%.  
227  
1. In compliance with NEC requirements for multimotor and combination load equipment (refer  
to NEC Articles 430 and 440), the overcurrent protective device for the unit shall be fuse or  
HACR breaker. Canadian units may be fuse or circuit breaker.  
2. Unbalanced 3-Phase Supply Voltage  
IMPORTANT: If the supply voltage phase imbalance is more than 2%, contact your local electric  
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.  
utility company immediately.  
max voltage deviation from average voltage  
% Voltage Imbalance  
= 100 x  
average voltage  
17  
Table 3 -- Electrical Data -- Units With Optional Powered Convenience Outlet (cont)  
VOLTAGE  
DISCONNECT  
SIZE  
NOMINAL  
COMPRESSOR  
ELECTRIC HEAT  
POWER SUPPLY  
OFM  
FLA  
IFM  
POWER  
EXHAUST  
FLA  
RANGE  
UNIT  
50PG  
IFM  
FLA  
POWER SUPPLY  
Nominal  
TYPE  
Min  
Max  
RLA  
LRA  
FLA  
MCA  
MOCP†  
FLA  
LRA  
Volts-Ph-Hz  
kW*  
—
—
2.3/ 3.0  
3.8/ 5.0  
5.6/ 7.5  
7.5/10.0  
11.3/15.0  
—
26.5/26.5  
26.5/26.5  
26.5/28.3  
32.6/35.5  
38.9/42.8  
51.4/57.1  
26.5/26.5  
26.5/26.5  
26.5/28.3  
32.6/35.5  
38.9/42.8  
51.4/57.1  
11.2  
30/30  
30/30  
30/30  
35/40  
40/45  
60/60  
30/30  
30/30  
30/30  
35/40  
40/45  
60/60  
15  
27/27  
27/27  
27/27  
30/33  
36/39  
47/53  
27/27  
27/27  
27/27  
30/33  
36/39  
47/53  
11  
98/98  
98/98  
98/98  
98/98  
98/98  
98/98  
98/98  
98/98  
98/98  
98/98  
98/98  
98/98  
44  
6.3/ 7.2  
10.0/11.5  
15.0/17.3  
20.0/23.1  
30.0/34.6  
—
Low  
High  
Low  
High  
Low  
High  
208/230-3-60  
187  
414  
518  
187  
253  
11.5  
77  
1.0  
0.5  
0.5  
1.0  
1.4  
4.9  
2.1  
2.1  
6.3/ 7.2  
10.0/11.5  
15.0/17.3  
20.0/23.1  
30.0/34.6  
—
2.3/ 3.0  
3.8/ 5.0  
5.6/ 7.5  
7.5/10.0  
11.3/15.0  
—
3.5  
3.0  
11.2  
15  
11  
44  
5.8  
5.0  
12.6  
15  
12  
44  
8.7  
7.5  
16.3  
20  
15  
44  
11.5  
10.0  
15.0  
—
19.8  
20  
18  
44  
17.3  
27.0  
30  
25  
44  
—
—
11.2  
15  
11  
44  
3.5  
3.0  
11.2  
15  
11  
44  
5.8  
5.0  
12.6  
15  
12  
44  
8.7  
7.5  
16.3  
20  
15  
44  
11.5  
10.0  
15.0  
—
19.8  
20  
18  
44  
04  
17.3  
27.0  
30  
25  
44  
460-3-60  
506  
633  
253  
5.1  
35  
(cont)  
—
11.8  
15  
12  
45  
3.5  
3.0  
11.8  
15  
12  
45  
5.8  
5.0  
13.4  
15  
12  
45  
8.7  
7.5  
17.0  
20  
16  
45  
11.5  
10.0  
15.0  
—
20.5  
25  
19  
45  
17.3  
27.8  
30  
26  
45  
0.6  
—
11.8  
15  
12  
45  
3.5  
3.0  
11.8  
15  
12  
45  
5.8  
5.0  
13.4  
15  
12  
45  
8.7  
7.5  
17.0  
20  
16  
45  
11.5  
10.0  
15.0  
—
20.5  
25  
19  
45  
17.3  
27.8  
30  
26  
45  
—
9.7  
15  
10  
39  
9.2  
10.0  
15.0  
—
16.3  
20  
15  
39  
Low  
High  
Low  
High  
13.9  
22.1  
25  
20  
39  
—
—
9.7  
15  
10  
39  
9.2  
10.0  
15.0  
—
16.3  
20  
15  
39  
13.9  
22.1  
25  
20  
39  
575-3-60  
4.3  
31  
—
11.1  
15  
12  
41  
9.2  
10.0  
15.0  
—
18.0  
20  
17  
41  
13.9  
23.9  
25  
22  
41  
1.4  
—
11.1  
15  
12  
41  
9.2  
10.0  
15.0  
—
18.0  
20  
17  
41  
13.9  
23.9  
25  
22  
41  
—
36.3/ 36.3  
40/ 40 36/ 36 128/128  
40/ 40 36/ 36 128/128  
45/ 50 41/ 46 128/128  
60/ 70 51/ 57 128/128  
80/ 90 71/ 80 128/128  
17.3/20.0  
26.0/30.0  
34.7/40.0  
52.0/60.0  
69.3/80.0  
—
3.8/ 5.0 36.3/ 37.1  
5.6/ 7.5 44.6/ 49.6  
7.5/10.0 55.5/ 62.1  
11.3/15.0 77.1/ 87.1  
Low  
High  
Low  
High  
Low  
High  
Low  
High  
4.9  
7.0  
4.9  
7.0  
4.9  
5.2  
4.9  
5.2  
15.0/20.0 98.8/112.1 100/125 91/103 128/128  
—
1.4  
—
—
38.4/ 38.4  
38.4/ 39.8  
47.3/ 52.3  
58.1/ 64.8  
79.8/ 89.8  
40/ 40 38/ 38 153/153  
40/ 40 38/ 38 153/153  
50/ 60 43/ 48 153/153  
60/ 70 53/ 60 153/153  
80/ 90 73/ 83 153/153  
17.3/20.0  
26.0/30.0  
34.7/40.0  
52.0/60.0  
69.3/80.0  
—
17.3/20.0  
26.0/30.0  
34.7/40.0  
52.0/60.0  
69.3/80.0  
—
17.3/20.0  
26.0/30.0  
34.7/40.0  
52.0/60.0  
69.3/80.0  
—
10.0/11.5  
15.0/17.3  
20.0/23.1  
30.0/34.6  
40.0/46.2  
—
10.0/11.5  
15.0/17.3  
20.0/23.1  
30.0/34.6  
40.0/46.2  
—
10.0/11.5  
15.0/17.3  
20.0/23.1  
30.0/34.6  
40.0/46.2  
—
10.0/11.5  
15.0/17.3  
20.0/23.1  
30.0/34.6  
40.0/46.2  
3.8/ 5.0  
5.6/ 7.5  
7.5/10.0  
11.3/15.0  
15.0/20.0 101.4/114.8 110/125 93/106 153/153  
208/230-1-60  
20.5  
109  
—
37.7/ 37.7  
37.7/ 38.9  
46.4/ 51.4  
57.3/ 63.9  
78.9/ 88.9  
40/ 40 37/ 37 130/130  
40/ 40 37/ 37 130/130  
50/ 60 43/ 47 130/130  
60/ 70 53/ 59 130/130  
80/ 90 73/ 82 130/130  
3.8/ 5.0  
5.6/ 7.5  
7.5/10.0  
11.3/15.0  
15.0/20.0 100.5/113.9 110/125 92/105 130/130  
—
39.8/ 39.8  
39.8/ 41.5  
49.0/ 54.0  
59.9/ 66.5  
81.5/ 91.5  
40/ 40 40/ 40 155/155  
40/ 45 40/ 40 155/155  
50/ 60 45/ 50 155/155  
60/ 70 55/ 61 155/155  
90/100 75/ 84 155/155  
3.8/ 5.0  
5.6/ 7.5  
7.5/10.0  
11.3/15.0  
15.0/20.0 103.1/116.5 110/125 95/107 155/155  
05  
—
29.0/29.0  
29.0/29.0  
30.9/33.8  
37.1/41.0  
49.6/55.4  
62.1/69.9  
29.3/29.3  
29.3/29.3  
31.3/34.1  
37.5/41.4  
50.0/55.8  
62.5/70.3  
30.4/30.4  
30.4/30.4  
32.6/35.5  
38.9/42.8  
51.4/57.1  
63.9/71.6  
30.7/30.7  
30.7/30.7  
33.0/35.9  
39.3/43.1  
51.8/57.5  
64.3/72.0  
30/30  
30/30  
35/35  
40/45  
50/60  
70/70  
30/30  
30/30  
35/35  
40/45  
60/60  
70/80  
35/35  
35/35  
35/40  
40/45  
60/60  
70/80  
35/35  
35/35  
35/40  
40/45  
60/60  
70/80  
29/29 110/110  
29/29 110/110  
29/31 110/110  
34/38 110/110  
46/51 110/110  
57/64 110/110  
29/29 128/128  
29/29 128/128  
29/31 128/128  
35/38 128/128  
46/51 128/128  
58/65 128/128  
31/31 112/112  
31/31 112/112  
31/33 112/112  
36/39 112/112  
47/53 112/112  
59/66 112/112  
31/31 130/130  
31/31 130/130  
31/33 130/130  
36/40 130/130  
48/53 130/130  
59/66 130/130  
3.8/ 5.0  
5.6/ 7.5  
7.5/10.0  
11.3/15.0  
15.0/20.0  
—
3.8/ 5.0  
5.6/ 7.5  
7.5/10.0  
11.3/15.0  
15.0/20.0  
—
3.8/ 5.0  
5.6/ 7.5  
7.5/10.0  
11.3/15.0  
15.0/20.0  
—
3.8/ 5.0  
5.6/ 7.5  
7.5/10.0  
11.3/15.0  
15.0/20.0  
208/230-3-60  
187  
253  
14.6  
91  
1.0  
1.4  
* See Legend on next page.  
18  
Table 3 -- Electrical Data -- Units With Optional Powered Convenience Outlet (cont)  
VOLTAGE  
DISCONNECT  
SIZE  
NOMINAL  
COMPRESSOR  
ELECTRIC HEAT  
POWER SUPPLY  
OFM  
FLA  
POWER  
EXHAUST  
FLA  
IFM  
RANGE  
UNIT  
50PG  
POWER SUPPLY  
IFM  
FLA  
Nominal  
TYPE  
Min  
Max  
RLA  
LRA  
FLA  
MCA  
MOCP†  
FLA  
LRA  
Volts-Ph-Hz  
kW*  
—
5.8  
—
5.0  
13.7  
13.7  
15  
15  
14  
14  
15  
18  
25  
32  
14  
14  
16  
19  
25  
32  
14  
14  
16  
19  
26  
32  
15  
15  
16  
19  
26  
33  
11  
15  
20  
26  
11  
15  
20  
26  
12  
17  
22  
27  
12  
16  
22  
27  
55  
55  
55  
55  
55  
55  
64  
64  
64  
64  
64  
64  
56  
56  
56  
56  
56  
56  
65  
65  
65  
65  
65  
65  
42  
42  
42  
42  
48  
48  
48  
48  
44  
44  
44  
44  
50  
50  
50  
50  
8.7  
7.5  
16.3  
20  
Low  
High  
Low  
High  
2.1  
2.6  
2.1  
2.6  
11.5  
10.0  
15.0  
20.0  
—
5.0  
7.5  
10.0  
15.0  
20.0  
—
5.0  
7.5  
10.0  
15.0  
20.0  
—
5.0  
7.5  
10.0  
15.0  
20.0  
—
10.0  
15.0  
20.0  
—
10.0  
15.0  
20.0  
—
10.0  
15.0  
20.0  
—
10.0  
15.0  
20.0  
—
3.8/ 5.0  
5.6/ 7.5  
7.5/10.0  
11.3/15.0  
15.0/20.0  
19.8  
20  
17.3  
27.0  
30  
23.1  
34.3  
35  
—
—
14.2  
15  
5.8  
14.2  
15  
8.7  
16.9  
20  
11.5  
20.4  
25  
17.3  
27.6  
30  
23.1  
34.9  
35  
460-3-60  
414  
506  
7.1  
46  
0.5  
—
14.3  
15  
5.8  
14.3  
15  
8.7  
17.0  
20  
11.5  
20.5  
25  
17.3  
27.8  
30  
23.1  
35.0  
40  
0.6  
—
14.8  
15  
05  
(cont)  
5.8  
14.8  
15  
8.7  
17.6  
20  
11.5  
21.1  
25  
17.3  
28.4  
30  
23.1  
35.6  
40  
—
10.7  
15  
9.2  
16.3  
20  
Low  
High  
Low  
High  
2.1  
2.0  
2.1  
2.0  
13.9  
22.1  
25  
18.5  
27.9  
30  
—
—
10.6  
15  
9.2  
16.1  
20  
13.9  
22.0  
25  
18.5  
27.8  
30  
575-3-60  
518  
633  
5.1  
34  
0.5  
—
12.1  
15  
9.2  
18.0  
20  
13.9  
23.9  
25  
18.5  
29.6  
30  
1.4  
—
12.0  
15  
9.2  
17.9  
20  
13.9  
23.8  
25  
18.5  
29.5  
30  
—
44.8/ 44.8  
44.8/ 44.8  
44.8/ 49.6  
55.5/ 62.1  
77.1/ 87.1  
50/ 50  
50/ 50  
50/ 50  
60/ 70  
80/ 90  
44/44 165/165  
44/44 165/165  
44/46 165/165  
51/57 165/165  
71/80 165/165  
91/103 165/165  
17.3/ 20.0  
26.0/ 30.0  
34.7/ 40.0  
52.0/ 60.0  
69.3/ 80.0  
86.7/100.0  
—
Low  
High  
Low  
High  
4.9  
7.0  
4.9  
7.0  
98.8/112.1 100/125  
18.8/25.0 120.5/137.1 125/150 111/126 165/165  
—
—
46.9/ 46.9  
46.9/ 46.9  
47.3/ 52.3  
58.1/ 64.8  
79.8/ 89.8  
50/ 50  
50/ 50  
50/ 60  
60/ 70  
80/ 90  
46/ 46 190/190  
46/ 46 190/190  
46/ 48 190/190  
53/ 60 190/190  
73/ 83 190/190  
93/106 190/190  
17.3/ 20.0  
26.0/ 30.0  
34.7/ 40.0  
52.0/ 60.0  
69.3/ 80.0  
86.7/100.0  
—
17.3/ 20.0  
26.0/ 30.0  
34.7/ 40.0  
52.0/ 60.0  
69.3/ 80.0  
86.7/100.0  
—
17.3/ 20.0  
26.0/ 30.0  
34.7/ 40.0  
52.0/ 60.0  
69.3/ 80.0  
86.7/100.0  
3.8/ 5.0  
5.6/ 7.5  
7.5/10.0  
11.3/15.0  
15.0/20.0 101.4/114.8 110/125  
18.8/25.0 123.1/139.8 125/150 113/129 190/190  
06  
208/230-1-60  
187  
253  
26.9  
145  
1.5  
—
46.2/ 46.2  
46.2/ 46.2  
46.4/ 51.4  
57.3/ 63.9  
78.9/ 88.9  
50/ 50  
50/ 50  
50/ 60  
60/ 70  
80/ 90  
45/ 45 167/167  
45/ 45 167/167  
45/ 47 167/167  
53/ 59 167/167  
73/ 82 167/167  
92/105 167/167  
3.8/ 5.0  
5.6/ 7.5  
7.5/10.0  
11.3/15.0  
15.0/20.0 100.5/113.9 110/125  
18.8/25.0 122.3/138.9 125/150 112/128 167/167  
1.4  
—
48.3/ 48.3  
48.3/ 48.3  
49.0/ 54.0  
59.9/ 66.5  
81.5/ 91.5  
50/ 50  
50/ 50  
50/ 60  
60/ 70  
90/100  
48/ 48 192/192  
48/ 48 192/192  
48/ 50 192/192  
55/ 61 192/192  
75/ 84 192/192  
95/107 192/192  
3.8/ 5.0  
5.6/ 7.5  
7.5/10.0  
11.3/15.0  
15.0/20.0 103.1/116.5 110/125  
18.8/25.0 124.9/141.5 125/150 115/130 192/192  
E xamp le : Sup p ly voltag e is 2 3 0 --- 3 --- 6 0  
LEGEND  
FLA  
--- Ful l Lo a d A mp s  
AB = 224 v  
BC = 231 v  
AC = 226 v  
HACR --- Heating, Air Conditioning and Refrigeration  
IFM --- Indoor (Evaporator) Fan Motor  
224 + 231 + 226  
3
LRA --- Lo ck e d R o t o r A mp s  
Average Voltage =  
MCA --- Minimum Circuit Amps  
MOCP --- Maximum Overcurrent Protection  
NEC --- National Electrical Code  
OFM --- Outdoor (Condenser) Fan Motor  
RLA --- Rated Load Amps  
681  
3
=
=
227  
Determine maximum deviation from average voltage.  
(AB) 227 – 224 = 3 v  
(BC) 231 – 227 = 4 v  
(AC) 227 – 226 = 1 v  
Maximum deviation is 4 v.  
Determine percent of voltage imbalance.  
*Heater capacity (kW) is based on heater voltage of 208v, 240v, 480v, or 600v. If power  
distribution voltage to unit varies from rated heater voltage, heater kW will vary accord-  
ingly.  
{
Fuse or HACR circuit breaker.  
4
NOTES:  
% Voltage Imbalance  
=
100 x  
227  
1. In compliance with NEC requirements for multimotor and combination load equipment (refer  
to NEC Articles 430 and 440), the overcurrent protective device for the unit shall be fuse or  
HACR breaker. Canadian units may be fuse or circuit breaker.  
2. Unbalanced 3-Phase Supply Voltage  
= 1.76%  
This amount of phase imbalance is satisfactory as it is below the maximum allowable 2%.  
IMPORTANT: If the supply voltage phase imbalance is more than 2%, contact your local electric  
utility company immediately.  
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.  
max voltage deviation from average voltage  
% Voltage Imbalance  
= 100 x  
average voltage  
19  
Table 3 -- Electrical Data -- Units With Optional Powered Convenience Outlet (cont)  
VOLTAGE  
DISCONNECT  
SIZE  
NOMINAL  
COMPRESSOR  
ELECTRIC HEAT  
POWER SUPPLY  
OFM  
FLA  
POWER  
EXHAUST  
FLA  
IFM  
RANGE  
POWER SUPPLY  
UNIT  
50PG  
IFM  
FLA  
Nominal  
TYPE  
Min  
Max  
RLA  
LRA  
FLA  
MCA  
MOCP†  
FLA  
LRA  
Volts-Ph-Hz  
kW*  
—
10.0/11.5  
15.0/17.3  
20.0/23.1  
30.0/34.6  
40.0/46.2  
50.0/57.7  
—
10.0/11.5  
15.0/17.3  
20.0/23.1  
30.0/34.6  
40.0/46.2  
50.0/57.7  
—
10.0/11.5  
15.0/17.3  
20.0/23.1  
30.0/34.6  
40.0/46.2  
50.0/57.7  
—
—
3.8/ 5.0  
5.6/ 7.5  
7.5/10.0  
11.3/15.0  
15.0/20.0  
18.8/25.0  
—
3.8/ 5.0  
5.6/ 7.5  
7.5/10.0  
11.3/15.0  
15.0/20.0  
18.8/25.0  
—
3.8/ 5.0  
5.6/ 7.5  
7.5/10.0  
11.3/15.0  
15.0/20.0  
18.8/25.0  
—
33.5/33.5  
33.5/33.5  
33.5/34.1  
37.5/41.4  
50.0/55.8  
62.5/70.3  
75.0/84.6  
33.5/33.5  
33.5/33.5  
33.5/34.1  
37.5/41.4  
50.0/55.8  
62.5/70.3  
75.0/84.6  
34.9/34.9  
34.9/34.9  
34.9/35.9  
39.3/43.1  
51.8/57.5  
64.3/72.0  
76.8/86.4  
34.9/34.9  
34.9/34.9  
34.9/35.9  
39.3/43.1  
51.8/57.5  
64.3/72.0  
76.8/86.4  
15.2  
35/35  
35/35  
35/35  
40/45  
60/60  
70/80  
80/90  
35/35  
35/35  
35/35  
40/45  
60/60  
70/80  
80/90  
35/35  
35/35  
35/40  
40/45  
60/60  
70/80  
80/90  
35/35  
35/35  
35/40  
40/45  
60/60  
70/80  
80/90  
20  
33/33 161/161  
33/33 161/161  
33/33 161/161  
35/38 161/161  
46/51 161/161  
58/65 161/161  
69/78 161/161  
33/33 161/161  
33/33 161/161  
33/33 161/161  
35/38 161/161  
46/51 161/161  
58/65 161/161  
69/78 161/161  
35/35 163/163  
35/35 163/163  
35/35 163/163  
36/40 163/163  
48/53 163/163  
59/66 163/163  
71/79 163/163  
35/35 163/163  
35/35 163/163  
35/35 163/163  
36/40 163/163  
48/53 163/163  
59/66 163/163  
71/79 163/163  
Low  
High  
Low  
High  
Low  
High  
Low  
High  
—
1.4  
—
208/230-3-60  
187  
253  
17.6  
123  
1.5  
5.2  
10.0/11.5  
15.0/17.3  
20.0/23.1  
30.0/34.6  
40.0/46.2  
50.0/57.7  
—
3.8/ 5.0  
5.6/ 7.5  
7.5/10.0  
11.3/15.0  
15.0/20.0  
18.8/25.0  
—
15  
15  
16  
19  
25  
32  
39  
15  
15  
16  
19  
25  
32  
39  
16  
16  
16  
19  
26  
33  
39  
16  
16  
16  
19  
26  
33  
39  
12  
15  
20  
26  
31  
12  
15  
20  
26  
31  
14  
16  
22  
27  
32  
14  
16  
22  
27  
32  
69  
69  
69  
69  
69  
69  
69  
69  
69  
69  
69  
69  
69  
69  
70  
70  
70  
70  
70  
70  
70  
70  
70  
70  
70  
70  
70  
70  
55  
55  
55  
55  
55  
55  
55  
55  
55  
55  
57  
57  
57  
57  
57  
57  
57  
57  
57  
57  
5.8  
5.0  
15.2  
20  
8.7  
7.5  
16.9  
20  
11.5  
10.0  
20.4  
25  
17.3  
15.0  
27.6  
30  
23.1  
20.0  
34.9  
35  
28.9  
25.0  
42.1  
45  
—
—
15.2  
20  
5.8  
5.0  
15.2  
20  
06  
(cont)  
8.7  
7.5  
16.9  
20  
11.5  
10.0  
20.4  
25  
17.3  
15.0  
27.6  
30  
23.1  
20.0  
34.9  
35  
28.9  
25.0  
42.1  
45  
460-3-60  
414  
506  
7.7  
50  
0.8  
2.6  
—
—
15.8  
20  
5.8  
5.0  
15.8  
20  
8.7  
7.5  
17.6  
20  
11.5  
10.0  
21.1  
25  
17.3  
15.0  
28.4  
30  
23.1  
20.0  
35.6  
40  
28.9  
25.0  
42.9  
45  
0.6  
—
—
15.8  
20  
5.8  
5.0  
15.8  
20  
8.7  
7.5  
17.6  
20  
11.5  
10.0  
21.1  
25  
17.3  
15.0  
28.4  
30  
23.1  
20.0  
35.6  
40  
28.9  
25.0  
42.9  
45  
—
—
12.1  
15  
9.2  
10.0  
16.1  
20  
13.9  
15.0  
22.0  
25  
Low  
High  
Low  
High  
18.5  
20.0  
27.8  
30  
23.1  
25.0  
33.5  
35  
—
—
—
12.1  
15  
9.2  
10.0  
16.1  
20  
13.9  
15.0  
22.0  
25  
18.5  
20.0  
27.8  
30  
23.1  
25.0  
33.5  
35  
575-3-60  
518  
633  
6.1  
40  
0.8  
2.0  
—
—
13.5  
15  
9.2  
10.0  
17.9  
20  
13.9  
15.0  
23.8  
25  
18.5  
20.0  
29.5  
30  
23.1  
25.0  
35.3  
40  
1.4  
—
—
13.5  
15  
9.2  
10.0  
17.9  
20  
13.9  
15.0  
23.8  
25  
18.5  
20.0  
29.5  
30  
23.1  
25.0  
35.3  
40  
—
—
37.1/37.1  
37.1/37.1  
37.1/37.1  
37.5/41.4  
50.0/55.8  
62.5/70.3  
75.0/84.6  
39.4/39.4  
39.4/39.4  
39.4/39.4  
40.4/44.3  
52.9/58.6  
65.4/73.1  
77.9/87.5  
40/40  
40/40  
40/40  
40/45  
60/60  
70/80  
80/90  
40/40  
40/40  
40/40  
45/45  
60/60  
70/80  
80/90  
37/37 187/187  
37/37 187/187  
37/37 187/187  
37/38 187/187  
46/51 187/187  
58/65 187/187  
69/78 187/187  
39/39 213/213  
39/39 213/213  
39/39 213/213  
39/41 213/213  
49/54 213/213  
60/67 213/213  
72/81 213/213  
10.0/11.5  
15.0/17.3  
20.0/23.1  
30.0/34.6  
40.0/46.2  
50.0/57.7  
—
3.8/ 5.0  
5.6/ 7.5  
7.5/10.0  
11.3/15.0  
15.0/20.0  
18.8/25.0  
—
Low  
5.2  
7.5  
07  
208/230-3-60  
187  
253  
20.5  
149  
1.5  
—
10.0/11.5  
15.0/17.3  
20.0/23.1  
30.0/34.6  
40.0/46.2  
50.0/57.7  
3.8/ 5.0  
5.6/ 7.5  
7.5/10.0  
11.3/15.0  
15.0/20.0  
18.8/25.0  
High  
* See Legend on next page.  
20  
Table 3 -- Electrical Data -- Units With Optional Powered Convenience Outlet (cont)  
VOLTAGE  
DISCONNECT  
SIZE  
NOMINAL  
COMPRESSOR  
ELECTRIC HEAT  
POWER SUPPLY  
OFM  
FLA  
IFM  
POWER  
EXHAUST  
FLA  
RANGE  
UNIT  
50PG  
IFM  
FLA  
POWER SUPPLY  
Nominal  
TYPE  
Min  
Max  
RLA  
LRA  
FLA  
MCA  
MOCP†  
FLA  
LRA  
Volts-Ph-Hz  
kW*  
—
10.0/11.5  
15.0/17.3  
20.0/23.1  
30.0/34.6  
40.0/46.2  
50.0/57.7  
—
—
3.8/ 5.0  
5.6/ 7.5  
7.5/10.0  
11.3/15.0  
15.0/20.0  
18.8/25.0  
—
3.8/ 5.0  
5.6/ 7.5  
7.5/10.0  
11.3/15.0  
15.0/20.0  
18.8/25.0  
—
5.0  
7.5  
10.0  
15.0  
20.0  
25.0  
—
5.0  
7.5  
10.0  
15.0  
20.0  
25.0  
—
5.0  
7.5  
10.0  
15.0  
20.0  
25.0  
—
5.0  
7.5  
10.0  
15.0  
20.0  
25.0  
—
10.0  
15.0  
20.0  
25.0  
30.0  
—
10.0  
15.0  
20.0  
25.0  
30.0  
—
10.0  
15.0  
20.0  
25.0  
30.0  
—
10.0  
15.0  
20.0  
25.0  
30.0  
38.5/38.5  
38.5/38.5  
38.5/38.5  
39.3/43.1  
51.8/57.5  
64.3/72.0  
76.8/86.4  
40.8/40.8  
40.8/40.8  
40.8/40.8  
42.1/46.0  
54.6/60.4  
67.1/74.9  
79.6/89.3  
17.6  
40/40  
40/40  
40/40  
40/45  
60/60  
70/80  
80/90  
45/45  
45/45  
45/45  
45/50  
60/70  
70/80  
80/90  
20  
38/38 189/189  
38/38 189/189  
38/38 189/189  
38/40 189/189  
48/53 189/189  
59/66 189/189  
71/79 189/189  
41/41 215/215  
41/41 215/215  
41/41 215/215  
41/42 215/215  
50/56 215/215  
62/69 215/215  
73/82 215/215  
Low  
High  
Low  
High  
Low  
High  
5.2  
7.5  
2.6  
3.4  
2.6  
3.4  
208/230-3-60  
187  
253  
20.5  
149  
1.5  
1.4  
10.0/11.5  
15.0/17.3  
20.0/23.1  
30.0/34.6  
40.0/46.2  
50.0/57.7  
—
17  
17  
17  
19  
25  
32  
39  
18  
18  
18  
20  
26  
33  
40  
18  
18  
18  
19  
26  
33  
39  
19  
19  
19  
20  
27  
34  
40  
14  
15  
20  
26  
31  
36  
15  
16  
21  
26  
32  
37  
16  
16  
22  
27  
32  
38  
16  
17  
23  
28  
33  
39  
94  
94  
5.8  
8.7  
17.6  
20  
17.6  
20  
94  
11.5  
17.3  
23.1  
28.9  
—
20.4  
25  
94  
27.6  
30  
94  
34.9  
35  
94  
42.1  
45  
94  
—
18.4  
20  
107  
107  
107  
107  
107  
107  
107  
95  
5.8  
8.7  
18.4  
20  
18.4  
20  
11.5  
17.3  
23.1  
28.9  
—
21.4  
25  
28.6  
30  
35.9  
40  
43.1  
45  
460-3-60  
414  
506  
9.6  
75  
0.8  
18.2  
20  
5.8  
8.7  
18.2  
20  
95  
18.2  
20  
95  
11.5  
17.3  
23.1  
28.9  
—
21.1  
25  
95  
07  
(cont)  
28.4  
30  
95  
35.6  
40  
95  
42.9  
45  
95  
0.6  
19.0  
20  
108  
108  
108  
108  
108  
108  
108  
69  
5.8  
8.7  
19.0  
20  
19.0  
20  
11.5  
17.3  
23.1  
28.9  
—
22.1  
25  
29.4  
30  
36.6  
40  
43.9  
45  
14.0  
15  
9.2  
16.1  
20  
69  
13.9  
18.5  
23.1  
27.7  
—
22.0  
25  
69  
Low  
High  
Low  
High  
2.0  
2.8  
2.0  
2.8  
27.8  
30  
69  
33.5  
35  
69  
39.3  
40  
69  
—
14.8  
15  
80  
9.2  
17.1  
20  
80  
13.9  
18.5  
23.1  
27.7  
—
23.0  
25  
80  
28.8  
30  
80  
34.5  
35  
80  
40.3  
45  
80  
575-3-60  
518  
633  
7.6  
54  
0.8  
15.4  
20  
71  
9.2  
17.9  
20  
71  
13.9  
18.5  
23.1  
27.7  
—
23.8  
25  
71  
29.5  
30  
71  
35.3  
40  
71  
41.0  
45  
71  
1.4  
16.2  
20  
82  
9.2  
18.9  
20  
82  
13.9  
18.5  
23.1  
27.7  
24.8  
25  
82  
30.5  
35  
82  
36.3  
40  
82  
42.0  
45  
82  
E xamp le : Sup p ly voltag e is 2 3 0 --- 3 --- 6 0  
LEGEND  
FLA  
--- Ful l Lo a d A mp s  
AB = 224 v  
BC = 231 v  
AC = 226 v  
HACR --- Heating, Air Conditioning and Refrigeration  
IFM --- Indoor (Evaporator) Fan Motor  
224 + 231 + 226  
3
LRA --- Lo ck e d R o t o r A mp s  
Average Voltage =  
MCA --- Minimum Circuit Amps  
MOCP --- Maximum Overcurrent Protection  
NEC --- National Electrical Code  
OFM --- Outdoor (Condenser) Fan Motor  
RLA --- Rated Load Amps  
681  
3
=
=
227  
Determine maximum deviation from average voltage.  
(AB) 227 – 224 = 3 v  
(BC) 231 – 227 = 4 v  
(AC) 227 – 226 = 1 v  
Maximum deviation is 4 v.  
Determine percent of voltage imbalance.  
*Heater capacity (kW) is based on heater voltage of 208v, 240v, 480v, or 600v. If power  
distribution voltage to unit varies from rated heater voltage, heater kW will vary accord-  
ingly.  
{
Fuse or HACR circuit breaker.  
4
NOTES:  
% Voltage Imbalance  
=
100 x  
= 1.76%  
This amount of phase imbalance is satisfactory as it is below the maximum allowable 2%.  
227  
1. In compliance with NEC requirements for multimotor and combination load equipment (refer  
to NEC Articles 430 and 440), the overcurrent protective device for the unit shall be fuse or  
HACR breaker. Canadian units may be fuse or circuit breaker.  
2. Unbalanced 3-Phase Supply Voltage  
IMPORTANT: If the supply voltage phase imbalance is more than 2%, contact your local electric  
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.  
utility company immediately.  
max voltage deviation from average voltage  
% Voltage Imbalance  
= 100 x  
average voltage  
21  
4. Hang the barometric relief/power exhaust hood on the  
mounting flange on the economizer panel. Secure hood to  
panel with screws saved from Step 2. (See Fig. 15 and 16.)  
Step 7 — Install Outdoor Air Hoods (Units with  
Economizer)  
Perform the following procedure to install the outdoor--air hoods:  
5. Align hole in flange of economizer panel with left edge of  
hood. Hang economizer hood on the top flange of the  
economizer panel by rotating hood until top flange of the  
economizer hood engages the bent flange on the  
economizer panel. Rotate hood until hood is flush with the  
economizer panel. Hood will support itself from flange.  
Align holes in hood with holes in panel and secure hood to  
panel with screws saved from Step 2. (See Fig. 16 and 17.)  
1. Economizer and barometric relief hoods are located in the  
condenser section under the slanted coil for shipping. (See  
Fig. 14.) Barometric relief/power exhaust hood is shipped  
inside of economizer hood. Remove screws that secure the  
wooden rails of the hood assemblies to the unit. Save  
screws. Slide complete assembly from condenser section.  
2. Remove the screws that secure the economizer and  
barometric relief/power exhaust hoods to the wooden  
railing. Discard or recycle wooden rails. Save screws.  
Step 8 — Install All Accessories  
After all of the factory--installed options have been adjusted, install  
all field--installed accessories. Refer to the accessory installation  
instructions included with each accessory. Consult the Carrier Price  
Pages for accessory package numbers for particular applications.  
3. The barometric relief damper is factory mounted onto the  
economizer panel for shipping. Remove the screw holding  
the barometric relief damper to the panel. Damper should be  
free to swing open during operation. (See Fig. 15.)  
POWER EXHAUST/  
BAROMETRIC  
RELIEF HOOD  
POWER EXHAUST/  
BAROMETRIC  
RELIEF HOOD  
MOUNTING  
FLANGE  
ECONOMIZER  
WOODEN RAILS  
HOOD  
C06262  
Fig. 16 -- Barometric Relief/Power Exhaust  
Hood Flange  
C06290  
Fig. 14 -- Economizer and Baromatric  
Relief/Power Exhaust Hoods Shipping Positions  
MOUNTING  
FLANGE  
ECONOMIZER  
HOOD  
ECONOMIZER  
HOOD  
POWER EXHAUST/  
BAROMETRIC  
RELIEF HOOD  
BAROMETRIC  
ECONOMIZER  
RELIEF DAMPER SCREW  
PANEL  
C06260  
Fig. 15 -- Hood Installation  
C06263  
Fig. 17 -- Economizer Flange  
Catalog No:50PG---40SI  
Copyright 2010 Carrier Corp. S 7310 W. Morris St. S Indianapolis, IN 46231  
Printed in U.S.A.  
Edition Date: 03/10  
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.  
Replaces: 50PG---36SI  
22  

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