Trimming The Heating System - Danfoss DHP-A Installation Instructions Manual

10.7.2.1 Noise check
During transportation and installation there is a certain risk that the heat pump can be damaged, components
may move or get bent and this can cause noise. Because of this it is important to check the heat pump when it has
been installed and is ready to be commissioned to ensure that everything is in order. The heat pump should be
tested in both heating and hot water modes to ensure that there is no abnormal noise. While doing this, check
that there is no abnormal noise in other parts of the house.
Noise is produced from the outdoor unit when the fan is in operation, check during that manual operation that
there is no disturbance in your own home as well as to any neighbours. A noise kit is available for purchase for the
outdoor unit for DHP-A 10 and 12 if it is necessary to reduce the noise.
10.7.2.2 Select operating mode
Set the heat pump to the desired operating mode in the menu INFORMATION -> OPERAT. If necessary, set certain
parameters in the control system, such as ROOM and CURVE.
10.7.3 Installing the front cover
Caution! Take care not to damage the front cover or display cables!
1. Hook on the lower edge of the front cover.
2. Carefully press the front cover's upper edge towards the heat pump.
3. Turn the catch in the top panel 90 degrees clockwise.
10.7.4 After start up
Note! Remember that it takes time for the heat pump to heat a cold house. It is best to let the heat pump
work at its own pace and NOT raise or alter any values in the control system to try to heat it up more
rapidly.
Caution! If there is an alarm in conjunction with commissioning it usually means that there is air in the
system.
10.8

Trimming the heating system

To obtain a heating system balance and obtain an even and comfortable indoor temperature, you must adjust
your heating system 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 Setting ROOM values for more information.
5. Note the temperature in the reference room at different points in time over a 24 hour period.
70 – Installation instructions VMBMA1002