Bedienungsanleitung Dimplex SI 75ZS (Seite 15 von 48) (Deutsch, Englisch, Französisch)

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8.3

For more detailed instructions concerning the connection and

functioning of the heat pump controller (e.g. the supplied external

wall sensor) please refer to the enclosed operating manual of the

controller.

An automatic circuit-breaker with simultaneous tripping of all ex-

ternal conductors is to be provided in the load power supply. The

circuit-breaker must be an all-pole disconnect device with a con-

tact gap of at least 3 mm. The same applies to any additional dis-

able contactors that may be required, e.g. during shut-off periods

imposed by the utility company. The required cross-sectional

area of the conductors is to be selected according to the power

consumption of the heat pump, the technical connection require-

ments of the relevant utility company and all applicable regula-

tions. Power consumption data of the heat pump is provided in

the product literature and on the nameplate. The terminals are

designed for a max. conductor cross-section of 35 mm².

ATTENTION!

The clockwise phase sequence must be observed when connecting the

load lines (the heat pump will deliver no output and will be very noisy

when the phase sequence is incorrect).

The power cable must be run through the guide tubes, inserted

into the side of the control box and secured by means of the

strain relief.

8 Commissioning

8.1 General Information

To ensure proper commissioning it should be carried out by a

customer service authorised by the manu-facturer. This will lead,

under certain circumstances, to an extension of the warranty pe-

riod (cf. Warranty).

8.2 Preparatory Steps

Prior to commissioning, the following items need to be checked:

All connections of the heat pump must have been made as

described in Chapter 7.

The heat source system and the heating circuit must have

been filled and checked.

The strainer must have been fitted in the sole inlet of the

heat pump.

In the brine and heating circuits all valves that might impair

the proper flow must be open.

The settings of the heat pump controller must be adapted to

the heating installation in accordance with the instructions

contained in the controller's operating manual.

8.3 Commissioning Procedure

The start-up of the heat pump is effected via the heat pump con-

troller.

ATTENTION!

Commissioning is to be effected in accordance with the installation and

operating manual of the heat pump controller.

Where an overflow valve is fitted to assure the minimum heating

water flow rate, the valve must be set in accordance with the re-

quirements of the heating installation. An incorrect setting may

result in various error symptoms and an increased elec-tric

power consumption. To correctly set the overflow valve, the fol-

lowing procedure is recommended:

Close all of the heating circuits which may also be closed during

operation (depending on the type of heat pump usage) so that

the least favourable operating state - with respect to the water

flow rate - is achieved. Normally, these heating circuits are those

of the rooms located on the south and west sides of buildings. At

least one heating circuit must remain open (e.g. bathroom).

The overflow valve is to be opened to such an extent that based

on the current heat source temperature the maximum tempera-

ture difference between heating supply and return flow tempera-

ture is obtained, as indicated in the table below. The tempera-

ture difference should be measured as closely to the heat pump

as possible. In mono-energetic systems, the electric heating ele-

ment is to be deactivated.

Any malfunctions occurring during operation are displayed on the

heat pump controller and can be corrected as described in the

operating manual of the heat pump controller.

Heat source

temperature max. difference between heating

supply and return temperature

from to

-5° C 0° C 10 K

1° C 5° C 11 K

6° C 9° C 12 K

10° C 14° C 13 K

15° C 20° C 14 K

21° C 25° C 15 K

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