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An all-pole disconnecting device with a contact gap of at least
3 mm (e.g. utility blocking contactor or power contactor) as well
as a 3-pole circuit breaker with common tripping for all external
conductors must be installed in the power supply (tripping current
in compliance with the Device Information).
Ensure that the incoming supply has a clockwise rotating field
when connecting multiphase devices L1; L2; L3.
ATTENTION!
Ensure that there is a clockwise rotating field: Operating the compressor
in the wrong rotational direction could cause damage to the compressor.
The correct control voltage must be ensured according to the
general information leaflet.
For detailed information, see Circuit Diagrams in the Appendix.
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7
Start-UP
7.1 General Information
To ensure that start-up is performed correctly, it should only be
carried out by an after-sales service technician authorised by the
manufacturer. This may be a condition for extending the guaran-
tee (see Warranty Service).
7.2 Preparation
The following items need to be checked prior to start-up:
All of the heat pump connections must be established as de-
scribed in Chapter 6.
All valves that could impair the proper flow of the heating
water in the heating circuit must be open.
The air intake and air outlet paths must be clear.
The ventilator must turn in the direction indicated by the ar-
row.
The settings of the heat pump controller must be adapted to
the heating system in accordance with the controller's oper-
ating instructions.
Ensure the condensate outflow functions.
Both the accessories pack in the switch box and that which
is located under the ventilator must be removed.
7.3 Procedure
The heat pump is started up via the heat pump manager. Adjus-
tments should be made in compliance with the instructions.
At hot water temperatures under 7° C, start-up is not possible.
The water in the buffer tank must be heated to a minimum of
18 °C with the second heat generator.
To ensure a problem-free start-up, the following procedure is to
be implemented:
1)
Close all consumer circuits.
2)
Ensure that the heat pump has the correct water flow.
3)
Use the controller to select the automatic operating mode.
4)
In the special functions menu, start the "Start-up" program.
5)
Wait until a return temperature of at least 25 °C has been
reached.
6)
Now slowly reopen the heating circuit valves in succession
so that the heating water flow is constantly raised by slightly
opening the respective heating circuit. The heating water
temperature in the buffer tank must not be allowed to drop
below 20 °C during this process. This ensures that the heat
pump can be defrosted at any time.
7)
When all heat circuits are fully open and a return tempera-
ture of at least 18° C is maintained, set a minimum volume
flow quantity on the overflow valve (where present) and on
the heat circulating pump.
7.3
EN-7
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