Mitsubishi Electric ecodan PUHZ-W50VHA2 User Manual page 37

Electrical heater phase in Domestic Hot Water mode
1) HEAT PUMP UNIT
Heat pump unit operation changes according to the Dip SW setting.
Heat pump unit keeps running with the following switch setting. Electrical heater phase TYPE A.
SW1-5 OFF (Booster heater: for both DHW and Heating)
Heat pump unit stays in thermo OFF with the following switch setting. Electrical heater phase TYPE B.
SW1-4 ON (Immersion heater exits) and
SW1-5 ON (Booster heater: for Heating only) and
SW2-7 OFF (Immersion heater is in use)
2) WATER CIRCULATION PUMP
Water circulation pump operation changes according to the Dip SW setting.
Water circulation pump is switched to ON with the following switch setting. Electrical heater phase TYPE A.
SW1-5 OFF (Booster heater: for both DHW and Heating)
Once the booster heaters are ON, water circulation pump keeps running for 1 minute after the Booster heaters are OFF.
Water circulation pump is switched to ON with the following switch setting. Electrical heater phase TYPE B.
SW1-4 ON (Immersion heater exists) and
SW1-5 ON (Booster heater: for Heating only) and
SW2-7 OFF (Immersion heater is in use).
3) 3-PORT VALVE (2 x 2 Port Valves)
3-port valve operation changes according to the Dip SW setting.
3-port valve is switched ON with the following switch setting. Electrical heater phase TYPE A.
SW1-5 OFF (Booster heater: for both DHW and Heating)
Once the Booster heaters are ON, 3-port valve remains ON for 1 minute after the Booster heaters are switched OFF.
3-port valve is switched OFF with the following switch setting. Electrical heater phase TYPE B.
SW1-4 ON (Immersion heater exists) and
SW1-5 ON (Booster heater: for heating only) and
SW2-7 OFF (Immersion heater is in use).
4) BOOSTER HEATER 1 (optional)
Booster heater 1 is switched ON with the following switch setting. SW1-5 OFF (Booster heater: for both DHW and Heating).
The heater will not operate unless there has been an insufficient rise in flow temperature for the first 40 minutes. Electrical
heater phase TYPE A.
5) BOOSTER HEATER 2 (optional)
Booster heater 2 is switched ON with the following switch setting. SW1-5 OFF (Booster heater: for both DHW and Heating).
The heater will not operate unless there has been an insufficient rise in flow temperature for 30 minutes after boost heater 1 has
been energised. Electrical heater phase TYPE A.
6) IMMERSION HEATER
Immersion heater 1 is switched ON with the following switch setting. SW1-4 ON (Immersion heater exists) and SW2-7 OFF
(Immersion heater is in use). Electrical heater phase TYPE A and TYPE B.
INSTALLATION: FTC2
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