5 Settings and adjustments
A qualified installer sets the heat pump's basic settings upon installation. The adjustments that may be made
by the installer/user are described below.
Never change control unit settings unless you
are aware of what effects the changes may
have.
Make a note of the default setting.
5.1 Adjusting the indoor temperature
The heat curve is a graph that compares the outdoor temperature with the supply temperature. The colder the
outdoor temperature is, the more heat is supplied to the heating system. The heat curve is adjusted during
installation. It must however be re-adjusted later to obtain a pleasant indoor temperature in all weather condi-
tions.
For an explanation of the factory pre-set heat curve, see Adjusting the Heat Curve.
At an outdoor temperature of 0°C the supply temperature should be 40°C. Note that this is only a benchmark.
There are radiator systems, floor heating systems and other types of heating system which require either lower
or higher temperatures.
At outdoor temperatures below 0°C, supply line water hotter than 40°C is supplied to the radiators. Supply line
water colder than 40°C is supplied if the outdoor temperature is above 0°C.
A correctly set heat curve reduces the need for maintenance, as well as making operation more energy-effi-
cient.
The indoor temperature is adjusted by changing the heat curve of the heat pump. This curve is the control
system's tool for calculating the correct supply temperature of water for the heating system.
User Guide
Mega
Thermia Värmepumpar VUJSC302
11
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