Danfoss DHP-A Installation Instructions Manual page 70

10.6.2.2 Test the brine pump
1. Start the brine pump by setting the value BRINE PUMP to 1.
2. Check that the brine pump is running by:
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listening
•
putting a hand on the pump
•
checking that the level in the expansion tank is stable. If the level is not stable there is air in the system.
•
listen for air
3. If the pump does not start automatically, perform manual start.
4. If there is air in the brine system, bleed the system.
5. Stop the brine pump by setting the value to 0.
10.6.2.3 Test the circulation pump
1. Start the heating system circulation pump by setting the value CIRC. PUMP to 1.
2. Check that the circulation pump is running by carrying out the following:
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Listen
•
Place a hand on the pump
•
Listen for air
3. If the pump does not start, see Starting circulation pumps manually.
4. If there is air in the heating system, bleed the system, see Bleed the heating system.
5. Stop the circulation pump by setting the value to 0.
10.6.2.4 Test the exchange valve
1. Activate the 3-way valve by setting the value REV.V. HOT WATER to 1.
2. Check that the indicator on the exchange valve's upper side changes position.
3. If the indicator does not change position, perform fault tracing.
10.6.2.5 Test the compressor
1. Start the circulation pump by setting the value CIRC.PUMP to 1.
2. Start the heat pump compressor by setting the value HEAT PUMP to 1. At the same time as the value is set
to 1 for HEAT PUMP the brine pump starts.
Warning! Risk of burn injury, the pressure pipe on the compressor can get up to 70-80 degrees in
temperature after operating for a while!
3. Check that:
•
the compressor is running in the right direction by putting a hand on the pressure pipe before the com-
pressor starts, the pipe is then cold. Feel again after a short while to ensure the pressure pipe becomes
properly hot.
•
it sounds normal and there is no noise.
4. If the pipe does not get hot, or if the compressor sounds abnormal, perform fault tracing according to the
service instructions.
5. Stop the compressor by setting the value to 0.
6. Stop the brine pump by setting the value to 0.
7. Stop the circulation pump by setting the value to 0.
10.6.2.6 Testing the auxiliary heating power stages
1. Start the circulation pump by setting the value CIRC. PUMP to 1
2. Start the first auxiliary heating power stage by setting the value ADD.HEAT 1 to 1.
68 – Installation instructions VMBMA1002