Figure 15: Typical Pca Wiring Schematic - AEC PCA SERIES Operation And Installation Manual

Earth
ground
Remote
interlock
by others
Control
power
ON/OFF
Jumper
1FU 1FU
1S-1LT
1 1 1 X1
1 3
1 6 1 7 1 8 1 9
1CNTL Jumper
1 1 1 2 1 3 1 4
(+) (-)
YEL RED
Type K Thermocouple
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Figure 15: Typical PCA Wiring Schematic

1L2 1L1
230V
1T 1T
115V
"Low Refrig "Hi Refrig
Pres" Pres"
3LT 4LT
G R R G
1PS 2PS
1 4 1 5 1 6
1 10
1 5
1C
1L1
1L2
2C
1L1
1L2
2
1S-1LT
G
G
1C
2LT
G
G
2C
5LT
G G
Legend
Customer wiring/Customer-supplied components
Optional components
1T1
1MTR Pump
1T2
2T1
2MTR Compressor
2T2
3T1
Fan
3MTR
3T2
Subpanel
ground
2
"Power On"
Pump
starter
"Pump On"
Condensing unit
contactor
"Compressor On"
PCA Series Chillers