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Installation
13
Figure 11 Three-phase, 8 ton model schematic, typical
3
2
10
9
4
1
7
6
8
5
6
L1
L2
L3
See Note 6
See Note 8
See Note 7
See Note 7
See Note 8
See Note 8
See Note 1
See Note 6
C1Aux.
C2 Aux.
HP1
MF
C1
C2BK
HP2
W
BL
BR
R
BR
R
W
BL
R
BR
5
8
7
1
4
9
10
2
3
BK
BR BR
R
BK
HP3
R
BK
BK
RHTR1
RHTR2
HP4
1C1
2C1
3C1
HG1 HGSV1
LLSV1
BR
BR
BR
1MF
2MF
3MF
BR R OR
T3
T2
T1
COMP1
T3
T2
T1
COMP2
BR R OR
1C2
2C2
3C2
HG2
HGSV2
LLSV2
R
F1
F2
TX1
BK
BK
NOTES
1. TransformerTX1 provided on units with nameplate voltages greater than 250V.
2. Use copper conductors only. See unit nameplate for main supply wire sizing data.
Wire per local codes.
3. A remote disconnect switch is to be field-supplied and mounted within sight of the
condensing unit. See unit nameplate for voltage and amperage.
4.All motors have internal line break overload protectors.Three-phase motors
protected for primary single-phasing conditions.
5. Terminals 1 thru 8 are for connection of control circuit from evaporator unit.
(Terminals 4 and 8 are not used by some evaporator models . See Note 7). Wiring by
others to be NEC Class 2 and sized for 1V maximum drop.
6. Connection toTerminals 3 and 7 is used for high head alarm input connection in
evaporator unit.
7. Connection toTerminals 4 and 8 is required only on models with (HGBP) hot gas
bypass control signal output in evaporator unit.
8. Wires 1, 5 and 9 are separately connected to the grounded side of the 24V
Class 2 circuit. Do not connect them together.
STANDARD DEVICES
C1 - Compressor Contactor 1
C2 - Compressor Contactor 2
CHTR1 - Compressor Heater 1
CHTR2 - Compressor Heater 2
COMP1 - Compressor #1
COMP2 - Compressor #2
F1 -Transformer Fuse
F2 -Transformer Fuse
FM - Fan Motor
HP1 - High Pressure Switch 1
(Auto Reset)
HP2 - High Pressure Switch 2
(Auto Reset)
HP3 - Pressure Switch 3
Receiver (Auto Reset)
HP4 - Pressure Switch 4
Receiver (Auto Reset)
LLSV1 - Liquid Line SolenoidValve 1
LLSV2 - Liquid Line SolenoidValve 2
MF - Fan Motor Contactor
RHTR1 - Receiver Heater No.1
RHTR2 - Receiver Heater No.2
TX1 - Transformer LineVoltage to 230V
OPTIONAL DEVICES
HG1 - Hot Gas Relay 1
HG2 - Hot Gas Relay 2
HGSV1 - Hot Gas Solenoid 1
HGSV2 - Hot Gas Solenoid 2
WIRING LEGEND
Factory-supplied line voltage
Field-installed line voltage wiring
Optional line voltage wiring
Factory-supplied 24V NEC Class 2 wiring
Optional 24V wiring
Field-supplied 24V NEC Class 2 wiring
Field-supplied earth grounding wire
Pigtail leads
Terminal strip connection
Grounding lug connection
WIRE COLOR CODE
OR - Orange
R - Red
BR - Brown
P - Purple
GN - Green
Y - Yellow
BL - Blue
BK - Black
W - White
Insulation Color
GN / Y
Tracer Color
COMP2
Conductors Field-Supplied
(See Note 5)
Evaporator Unit
HIGH HEAD 1
24V GND
COMP1
HGBP1
HIGH HEAD 2
COOLING 2
COOLING 1
HGBP2
OUTDOOR CONDENSING MODULE
3-Phase Line
Voltage Supply
By Others
(See Notes 2 and 3)
Earth Ground
By Others
CHTR1
CHTR2
FM
Fan
Motor
HG2
HG1