11.5.5
Trimming the heating system
To obtain a heating system balance and obtain an even and comfortable indoor temperature, the heating system
must be adjusted according to the example below.
Note! Adjust the heating system during the winter to obtain the greatest possible output.
Note! Trimming must be carried out over a few days as the inertia in the heating system causes the indoor
temperature to change slowly.
1.
Choose one of the house’s rooms as a reference room for the indoor temperature, where the highest tem-
perature is required, 20-21°C.
2.
Place a thermometer in the room.
3.
Open all the heating system’s radiator valves fully.
4.
Leave the heat pump’s ROOM value set at 20°C. See ROOM for more information.
5.
Note the temperature in the reference room at different points in time over a 24 hour period.
6.
Adjust the ROOM value so that the reference room reaches your required indoor temperature of 20-21°C.
Remember that other rooms will have different temperatures during trimming, but these are adjusted later.
7.
If the ROOM value must be adjusted more than 3°C upwards or downwards the CURVE value must be adjus-
ted instead. See CURVE for more information.
8.
If the indoor temperature varies several degrees despite trimming, a specific part of the heat curve may
need adjusting. Check at what outdoor temperature the variation is greatest and adjust the curve at the
corresponding value (CURVE 5, CURVE 0, CURVE -5). See Adjusting the heat curve at -5°C, 0°C and 5°C for
more information.
9.
When the reference room has an even temperature of 20 - 21°C over a 24 hour period, you can adjust the
radiator valves in the other rooms so that their indoor temperatures are the same temperature or lower
than the reference room.
11.6
Installation protocol
Fill in the Installation protocol in the Maintenance instructions.
11.7
Customer information
After installation and test operation, the customer must be informed about their new heat pump installation. In
the Maintenance instructions there is a checklist regarding the information that the installer must give the cus-
tomer.
Note! The serial number must always be given for warranty matters. The serial number is on the type
plate, which is attached to the heat pump and control unit.
70 – Installation instructions VMGFD102
