Reinstalling Panels; Start-Up And Commissioning; Starting Circulation Pumps Manually; Adaptation To The Heating System - Danfoss DHP-AX Installation And Service Instructions Manual

Follow the instructions below to perform a calibration.
1. Detach and remove any insulation by the sensor to
be calibrated.
2. Connect a thermometer by the sensor.
3. Note the actual temperature.
4. Open the INFORMATION menu by pressing the left
or right button once.
5. Open the TEMPERATURE menu.
6. Note the sensor's measured temperature.
7. Compare the actual and measured temperatures. If
there is a difference, the sensor requires calibrating
as follows.
8. Open the SERVICE menu by pressing and holding
in for five seconds.
9. Open the INSTALLATION –> SENSOR CALIBRATION
menu.
10. Select the relevant sensor.
11. Change the valve according to the difference.
8.3.8 Exit test operation
1. Set the value for MANUAL TEST to 0.
8.4

Reinstalling panels

After completed checks and tests the covers must be rein-
stalled on the heat pump.
9

Start-up and commissioning

9.1

Starting circulation pumps manually

If any of the circulation pumps do not start, it may need to
be helped as follows:
Figure 13: Location of the bleed screw.
1. Open and remove the bleed screw on the front of
the pump. Ensure to catch the water that runs out
when the screw 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.
9.2

Adaptation to the heating system

Adjust the heat pump settings to the applicable heating
system, for instance an underfloor heating or radiator sys-
tem. The delta temperature should be 7–10°C above the
heat pump. If the delta temperature is not reached, the
flow of the circulation pump may need adjusting depend-
ing on the applicable heating system.
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F or further information about the heat pump's
control system, see section 12 Control panel.
18 – Installation
9.2.1 Hot water
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NOTE! If an external water heater is to be
installed, it must be activated in the SERVICE
menu. See instructions below:
1. Open the SERVICE menu by pressing and holding
in for five seconds.
2. In the HOT WATER–> START menu, set the value to
40.
9.2.2 Aux. heater
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NOTE! If an auxiliary heater is to be installed,
it must be activated in the SERVICE menu. See
instructions below:
1. Open the SERVICE menu by pressing and holding
in for five seconds.
2. In the AUX. HEATER–> MAX STEP menu, set the value
to 1.
9.2.3 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 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 heat pump when the fan is
in operation, check during manual operation that there
is no disturbance in your own home as well as to any
neighbours.
9.2.4 Select operating mode
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F or further information about the heat pump's
control system, see section 12 Control panel.
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.
9.3

After start up

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R emember 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.
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NOTE! If there is an alarm in conjunction with
installation it usually means that there is air in
the system. Also see section 15 Troubleshooting
in the service instructions for further informa-
tion.
VMBMH302