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1.
Installation methods
Installation
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6.1Control start of external boiler
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6.1.1: If the available electricity is enough to over the power consumption of heat pump
only only:
Observe! HTH only valid when parameter setting C7 in Advanced Setting Group C to 1
(default factory setting).Minimum 28 mm copper piping or similar is required for heating
system.
HTS: 3kW auxiliary heater valid for both heating and domestic hot water operation
HTH: 3kW back-up heater for heating operation only
Default setting: HTH has higher priority than HTS, which means, HTS will be activated only
after HTH is activated, if heating capacity is not enough. Installer can choose from following
ways to add a boiler to the system:
-Leave the 3kW heater connected to HTS and HTH not connected with power supply.
-have boiler parallel connected to HTH port, so boiler will be activated if unit capacity is not
enough to cover the house heating demand.
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