Dometic PGD1 - Multi-stage Wiring

14
EN
General Information VARC Chiller Controls
5 Electrical Connections VARC 60/72
5.2 Multi-stage Wiring
The following diagram shows how to wire multiple VARC stages.
24VAC/DC
L2
CW Return Manifold
CW Supply Manifold
Circ. Pump Sea Pump
CW L1
VARC
Stage 1
Chiller
Stage 1
Chiller
Stage 2
Chiller
Stage 3
VARC
Stage 2
VARC
Stage 3
SW L1
Supply Supply Supply
Return Return Return
Flow Switch Flow Switch Flow Switch
Freeze Stat Freeze Stat Freeze Stat
GND
Touch Screen (optional)
Modbus Comm 3 Wire
Pump Outputs from VARC Stage 1
Remote PLC Display
(Optional)
3 Wire Communication
Cables (one per stage)
6 Multi-Stage Wiring Diagram