Figure 11 Three-Phase, 8 Ton Model Schematic, Typical - Emerson Liebert Prop Fan Condensing Unit Installation, Operation And Maintenance Manual

Figure 11 Three-phase, 8 ton model schematic, typical

Conductors Field-Supplied
(See Note 5)
Evaporator Unit
3
HIGH HEAD 1
2
COOLING 1
10
9
24V GND
4
HGBP1
1
COMP1
7
HIGH HEAD 2
6
COOLING 2
8
HGBP2
5
COMP2
L1
3-Phase Line
L2
Voltage Supply
By Others
L3
(See Notes 2 and 3)
Earth Ground
By Others
NOTES
1. Transformer TX1 provided on units with nameplate voltages greater than 250 V.
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 to Terminals 3 and 7 is used for high head alarm input connection in
evaporator unit.
7. Connection to Terminals 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.
OUTDOOR CONDENSING MODULE
3
BL
See Note 6
HP1
2
W
C1 Aux.
10
R
C2 Aux.
See Note 8
9
BR
See Note 7
4
R
See Note 8
1
BR
See Note 6
7
BL
HP2
6
W
See Note 7
8
R
See Note 8
5
BR
See Note 1
F1
BK
F2
BK
BR BR
CHTR1
BR BR
BR
CHTR2
1MF 2MF
3MF
FM
Fan
Motor
BK C1
MF
HG1
BK C2
HG2
HP4
HP3
TX1
R R BK
RHTR1
BK
HG1
1C1
2C1
LLSV1
3C1
BR R OR
T3 T2 T1
COMP1
HG2
1C2
2C2
3C2
LLSV2
BR R OR
T3 T2 T1
COMP 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
13
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 Solenoid Valve 1
LLSV2 - Liquid Line Solenoid Valve 2
MF - Fan Motor Contactor
RHTR1 - Receiver Heater No.1
R BK
RHTR2 - Receiver Heater No.2
TX1 - Transformer Line Voltage to 230V
OPTIONAL DEVICES
RHTR2
HG1 - Hot Gas Relay 1
HG2 - Hot Gas Relay 2
HGSV1 - Hot Gas Solenoid 1
HGSV2 - Hot Gas Solenoid 2
HGSV1
WIRE COLOR CODE
OR - Orange
Y - Yellow
R - Red BL - Blue
BR - Brown BK - Black
P - Purple
W - White
GN - Green
Insulation Color
GN / Y
Tracer Color
HGSV2
Installation