Electrical Connection; Start-Up; General Information; Preparation - Dimplex LA 11MSR Instructions D'installation Et D'utilisation

6.3
NOTE
The use of an overflow valve is only recommended for panel heating and
a max. heating water flow of 1.3 m³/h. System faults may result if this is
not observed.
Antifreeze (frost protection)
A method of manual drainage (see illustration) should be pro-
vided for heat pumps which are exposed to frost. The antifreeze
function of the heat pump manager is active whenever the heat
pump manager and the heat circulating pump are ready for oper-
ation. If the heat pump is taken out of service or in the event of a
power failure, the system has to be drained. The heating circuit
should be operated with a suitable antifreeze if heat pump sys-
tems are implemented in buildings where a power failure can not
be detected (holiday home).

6.3 Electrical Connection

A standard three-core cable is used for connecting the heat
pump to the power supply.
The cable must be provided by the customer. The conductor
cross section is selected in accordance with the power consump-
tion of the heat pump (see Appendix Device Information) and the
applicable VDE (EN) and VNB regulations.
A disconnecting device with a contact gap of at least 3 mm (e.g.
utility blocking contactor or power contactor) as well as a 1-pole
circuit breaker must be installed in the power supply of the heat
pump by the customer (tripping current in compliance with the
Device Information).
The control voltage is supplied via the heat pump manager.
The heat pump manager has a 230 V AC-50 Hz power supply.
Connect the controller in compliance with its own operating in-
structions (16 A fuse).
The control line (not included in scope of supply) is connected to
the heat pump manager using a multipole plug connector. Use
the plug connector located on the base of the heat pump adja-
cent to the cable gland in the base plate. More detailed informa-
tion can be found in the operating instructions of the heat pump
manager.
See Appendix Circuit Diagrams for detailed information.
EN-6
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7

7.1 General Information

To ensure that start-up is performed correctly, it should only be
carried out by an after-sales service technician authorized by the
manufacturer. Only then can an extended warranty period of
3 years in total be granted (see Warranty Service). Start-up
should be carried out in heating operation.

7.2 Preparation

The following items need to be checked prior to start-up:

7.3 Procedure

The heat pump is started up via the heat pump manager. Adjust-
ments should be made in compliance with the instructions.
If an overflow valve is fitted to maintain the minimum heat-
ing water flow rate, the valve must be adapted to the require-
ments of the heating system. Incorrect adjustment can lead to
faulty operation and increased energy consumption. We recom-
mend carrying out the following procedure to correctly adjust the
overflow valve:
Close all of the heating circuits that may also be closed during
operation (depending on the type of heat pump usage) so that
the most unfavorable operating state - with respect to the water
flow rate - is achieved. This normally means the heating circuits
of the rooms on the south and west sides of the building. At least
one heating circuit must remain open (e.g. bathroom).
The overflow valve should be opened far enough to produce the
maximum temperature spread between the heating flow and re-
turn flow listed in the following table for the current heat source
temperature. The temperature spread should be measured as
close as possible to the heat pump. The heating element of mono
energy systems should be disconnected during start up.

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 not be blocked in any
way.
The ventilator must turn in the direction indicated by the ar-
row.
The settings of the heat pump manager must be adapted to
the heating system in accordance with the controller's oper-
ating instructions.
The condensate outflow must not be impaired.