Midea RSJ-420/PZN1-H - Page 18

MCAC-HTSM-201506 Midea R410A Direct Heating Commercial Heat Pump 50Hz Technical Manual
18
25
One-way solenoid control port.
26
4-way valve control power.
27
Left side: Circulating water pump control; right side: E-heater control. Only supply
ON/OFF signal, not supply power signal.
28
Right side: Remote alarm signal output. Only supply non-source ON/OFF signal, not
supply power signal.
29
EXV connector.
30
Electric proportional valve connector.
31
Transformer output connector.
32
Power connector for wired controller.
33
Remote control port.
34
Water flow switch connector.