Dhw - Hisense AHM-044HCDSAA Service Handbook

Control function
10.3

DHW

In addition, the unit can be combined with sanitary tank to delivery DHW. When DHW operation with heat pump is required,
the 3-way valve for DHW changes its normal position diverting to the sanitary tank inner coil, allowing to heat the tank water
temperature.
DHW operation should be enabled from the master controller.
DHW can be heated up by heat pump / DHW Electric Heater / boiler / solar panel depending on heat source availability and
setting.
The configuration of DHW availability should be done through the master controller.
Configuration →DHW
Mark
DHW_hts
NOTE:
1. When DHW is available DHW sensor of [TDHW] on PCB1 of indoor unit need be added to detect DHW water
temperature.
2. DHW sensor of [TDHW] must be embedded in hot water side of DHW tank to detect hot water temperature.
3. When DHW is available Optional Output signal need be configured as function of [3WV DHW] to drive 3-way valve for
DHW.
4. Inner coil surface area is critical to heat up DHW with heat pump. Inadequate coil surface area will cause less efficiency,
additional heating time, and stoppage of heat pump.
Description
Status
T
DHW
DHW Tank
DHW EH
Default Value Range
Enabled Disabled /Enabled
3wv DHW
136
Steps Units
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