Danfoss DHP-H, Installation And Service Instructions Manual

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VMBMA602
The pressure pipe should get hot during operation. Figure 76:
20. Check that:
• the compressor is running in the right direction by putting a
hand on the pressure pipe and checking that it is hot.
• it sounds normal and there is no noise.
21. If the pipe does not get hot, or if it sounds abnormal, see the
“Troubleshooting” section in the service instructions.
22. Stop the compressor by setting the value to 0.
23. Stop the brine pump by setting the value to 0.
24. Stop the circulation pump by setting the value to 0.
Testing the auxiliary heating power stages
25. Start the circulation pump by setting the value CIRC.PUMP to 1
26. Start the first auxiliary heating power stage by setting the value
ADD.HEAT 1 to 1.
27. Check that the auxiliary heating power stage works by leav-
ing the menu MANUAL TEST and going into the menu
INFORMATION -> TEMPERATURE -> SUPPLY and check that the
temperature rises.
28. Return to the menu MANUAL TEST and stop ADD.HEAT 1 by set-
ting the value back to 0.
29. Repeat steps 26 to 28 for ADD.HEAT 2 and ADD.HEAT 3.
30. Stop the circulation pump by setting the value to 0.
Test fuse protection
31. Start the circulation pump by setting the value CIRC.PUMP to 1
32. Start the compressor by setting the value HEATPUMP to 1.
33. At the same time, start the auxiliary heating power stages avail-
able to check that the fuse protection can withstand full power
operation.
34. Stop the auxiliary heating power stages and the compressor by
setting the value back to 0.
35. Stop the circulation pump by setting the value to 0.
Test the outdoor unit for DHP-A, -AL
36. Start the defroster shunt by setting the value SHUNT DEFR to 1.
37. Start the fan at low speed by setting the FAN L value to 1.
Check that the fan runs at low speed.
38. Start the fan at high speed by setting the FAN H value to 1.
Check that the fan runs at high speed.
Exit test operation
39. Set the value for MANUAL TEST to 0.
10.3 Commissioning
Starting circulation pumps manually
If any of the circulation pumps do not start, it may need to be
helped as follows:
Bleed screw location. Figure 77:
1. Open and remove the bleed screw on the front of the pump.
Normally a small amount of water comes out when it is
removed.
2. Insert a flat blade screwdriver and turn it in the direction of
rotation of the pump (clockwise).
3. Reinstall the bleed screw with its rubber seal.
Adaptation to the heating system
Adjust the heat pump settings to the applicable heating system, for
instance an underfloor heating or radiator system. The delta tem-
perature must be at least 8°C above the heat pump. The delta tem-
perature should be 3-5°C for the brine system. If none of the delta
temperatures are reached, the flow of the circulation pumps may
need adjusting depending on the applicable heating system.
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 com-
missioned to ensure that everything seems in order. The heat pump
should be run 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 opera-
tion, check during that manual operation that there is no distur-
bance 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.
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 computer, such as ROOM and CURVE.
10.4 Installing the front cover
⚠
NOTE! Take care not to damage the front cover!
1. Align the upper section of the front cover with both the side
channels at the top of the unit and slide it carefully downwards
until it covers the entire front of the unit.
2. Tighten the screws.
10.5 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
computer to try to heat it up more rapidly.
⚠ NOTE! If there is an LP alarm in conjunction with installation
it usually means that there is air in the system. Normally the
alarm disappears after a few days. If the alarm does not stop
the brine circuit must be bled and topped up.
⚠
NOTE! Hot!