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DHW power limit % allows you to set the power of the heat pump to heat hot water in the DHW tank.
DHW biv. limit °C allows you to set the outdoor temperature below which hot water is heated only by the electric
heater. This measure affects the life of the outdoor unit, as heating the water to a high temperature at a low outdoor tem-
perature puts an unnecessary strain on it.
To use DHW circulation, hot water distribution systems must be specially prepared.
Appropriate setting of the time schedules of hot water circulation and DHW heating can cause signicant savings if
hot water is only needed in the building at certain times. For example, hot water is not required at all in the morning,
evening or some days.
The power limit for DHW heating must be set in accordance with the properties of the heat exchanger in the hot
water tank. If the DHW heating power is higher than the power that the heat exchanger can transfer to the DHW
tank, it may cause the outdoor unit to cycle and reduce its service life.
On the third screen of the section DHW it is possible to set the item DHW optimization (Fig. . page 8) and
PPV optimization .
The Required DHW temperature °C item allows you to set the desired hot water temperature.
The item Reduced DHW temperature °C allows you to set a reduced hot water temperature.
Figure .8: DHW section – screen
Figure .: Section DHW - screen
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