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7
Water to Water Heat Pump (WTW)
7.4.5 Water circuit only operation (Indoor unit only operation) (during installation work)
During installation work, once the primary and sanitary circuits are fully charged with water it may be flexible to engaged the
electric heater to provide DHW (For UK only). *
1. To start operation
● Check if the power supply is OFF, and turn DIP switch 4-4 and 4-5 ( on FTC) ON.
● Turn ON the power supply.
2. To end operation
*1
● Turn OFF the power supply.
● Turn DIP switch 4-4 and 4-5 (on FTC) OFF.
*1 When the water circuit only operation is ended, ensure to check over the settings after ambient loop is connected and fully
charged.
Note:
Prolonged running of this operation may affect the life of the electric heater.
*If booster heater equipped, the function is activated.
B-218
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