Danfoss DHP-H, Installation And Service Instructions Manual

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VMBMA602
7.5 Resetting to system D or VLD
For a description of the different system solutions, see section
Piping installation.
The heat pump has VL as factory setting.
For D system, DHP-L:
If D system is selected, the cables for the internal auxiliary heater
must be disconnected according to the figure below.
Connect the external auxiliary heater according to the connection
diagram below.
For VLD system, DHP-A, -AL:
If the VLD system is selected DHP-A’s integrated exchange valve
must be limited in open mode to the heating system.
To limit the direction of flow for the exchange valve for the heating
system:
1. Ensure that the main circuit breaker is on.
2. Open the SERVICE menu by holding in for five seconds.
3. Open the control computer menu SERVICE -> MANUAL TEST.
4. Set the value for MANUAL TEST to 1.
5. Set the value for REV.V. HOT WATER to 0.
6. Wait for 15 seconds, disconnect the quick connector at the
exchange valve.
7. Set the value for MANUAL TEST back to 0.
8. Connect the external exchange valve cables to the correspond-
ing cables in the disconnected quick connector.
9. Move the supply line sensor out to the position shown in the
connection diagram for the VLD system.
In the control computer:
To change to system D or VLD:
1. Ensure that the main circuit breaker is on.
2. Open the SERVICE menu by holding in for five seconds.
3. Change system in the control computer menu SERVICE ->
INSTALLATION -> SYSTEM -> HEATING SYSTEM, select system
with and .
7.6 Changing the number of auxiliary heat-
ing power stages
⚠
NOTE! Setting the maximum permitted number of power
stages for the auxiliary heating must be carried out.
1. Ensure that the main circuit breaker is on.
2. Open the SERVICE menu by pressing for five seconds.
3. Change the number of auxiliary heating power stages in the
control computer menu SERVICE -> ADD.HEAT -> MAXSTEP,
select the number of stages and .
7.7 Connect outdoor unit, DHP-A, -AL
⚠ NOTE! The power cable may only be connected to the termi-
nal block intended for this purpose. No other terminal blocks
may be used!
For correct connection between the heat pump and the outdoor
unit, 8 connections must be made, see also separate sheet with
electrical connections.
1. Route the power cable through the opening in the top panel of
the heat pump to the terminal blocks.
2. Connect the power cable to the terminal block.