Appendix 1 Circuit Diagram - Emerson Liebert PEX User Manual

16

Appendix 1 Circuit Diagram

L1 02
Black Black
J9 3 2 1
W
03
Black Black
1
Wiring terminal
block
8
Black Black
06
06
1L1
2T1
Black Black
01 01
W1
Fan
Appendix 1 Circuit Diagram
Pressure sensor 2
J3 HP1 J4 HP2 J14 HP2
V U
03 03 L1 04 04
Black Black Red Orange
2 3 4 5 6
9 10 11 12 13
Orange
Black Black Red
07 08
06 09
3L2 5L3 A1 NO
Contactor 1
4T2 6T3 A2 NO
Black Black
Orange
09
01 01
V1
U1
TB
TB
PE
01
01
Figure 1 Circuit diagram of the condenser with single fan
Liebert.PEX Condenser User Manual
Pressure sensor 1
J15 HP1 J5 OutTemp J11 RS232
Shell connecting to
the earth
05
Olivine
Air circuit breaker
Olivine
Black
01 01
Isolation switch
Remark:
1. Connect the pressure sensor 1 only, when PEX
condenser is a single circuit.
2. Connect the pressure sensor 1 and 2 with the
copper pipe of PEX condenser, when PEX condenser
is a dual circuit.
3. When mounted vertically, the lower header
connects to pressure sensor 1 and the upper header
connects to pressure sensor 2.
4. Both external power and compressor signal are
wired in field.
5. The compressor signal cables should be in parallel
and then connected into the electrical control board,
when the indoor unit is a dual circuit.
04
04
Compressor
Red Orange
J7 Fan1Sta J10 Fan2Sta J6 CompSta
L3 L2 L1 PE
02 02 02 01 02
Olivine
Black Black Black Black
7
14
10 10 10
Black Black Black
L3 N PE
L2 L1
External power
signal