Applies to certain heat pump models.
HGW technology is a new and unique method of water heating.
At the same time as the water is heated to be distributed around the
house heating system, a small proportion flows via an extra de-super-
heater, which heats the water before it enters the water heater. A shunt
valve controls the flow between hot water and heating system.
During heating production, the shunt ensures a certain flow over the
de-superheater to the water heater. The flow through the shunt is con-
tinuously regulated by the heat pump control by sending opening or
closing pulses to the shunt.
Water heater
Danfoss heat pumps DHP-H and DHP-C are supplied with an integrated
180 litre water heater. They are equipped with a TWS coil that means
more effective heat transfer and efficient layering of the water in the
water heater.
Symbol explanation
1 Tap hot water
2 Peak temperature sensor
3 Water heater
4 TWS coil
5 Start temperature sensor
6 Supply line to TWS coil
7 Return line from TWS coil
8 Cold water line
Hot water production is prioritised over heat production.
The temperature of the hot water cannot be adjusted. Normally, hot
water production does not cease at a determined temperature but
when the compressor’s operating pressure switch reaches its maximum
operating pressure, which corresponds to a hot water temperature of
approximately 50-55°C.
8 – User manual VUBMA902
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