16
Multiple Heat Pumps, Heat Only Wiring Diagram
Master
Slave
• Circulation Pump is wired to B8 (Live) and B7 (Neutral), Maximum pump power is 500 W.
The heating run signal connects to B22, you can run both units at once by linking B22 on both control boards, alternatively you can operate each unit
independently i.e. one for upstairs and one for downstairs.
• B20 is permanently 240V AC, B19 is Neutral
Power Input
3A
Remove
MCB from unit
2m Flow Switch Cable,
Can be extended
Run Signal
Pump HP
F1 F2
L
N
Communications
Cable
2 core, 1mm, 16Vdc
240V Power Supply
5kW unit - 16A
9kW unit - 20A
16kW unit - 32A
Power Input
3A
Remove
MCB from unit
2m Flow Switch Cable,
Can be extended
Pump HP
F1 F2
L
N
Communications
Cable
2 core, 1mm, 16Vdc
240V Power Supply
5kW unit - 16A
9kW unit - 20A
16kW unit - 32A
Run Signal