Manual Dimplex WI 14CS (page 15 of 44) (English, German, French)

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English

7.3

6.4 Electrical Connection

The following electrical connections need to be established on

the heat pump.

Connection of the control line to the control panel of the heat

pump via terminal X1: L/N/PE.

Connection of the mains cable to the control panel of the

heat pump via terminal X5: L1/L2/L3/PE.

Connection of the mains cable of the well pump to the con-

trol panel of the heat pump via terminal X5: L11/L21/L31/PE.

Connection of the well pump (to be provided by the cus-

tomer) to the control panel of the heat pump via terminal X1:

PE and pump contactor K2: 2/4/6.

Ensure that the supply voltage for these terminals cannot be

switched off by the tariff contactor when connecting the mains

cable of the well pump, in order to enable the turn-off delay of the

well pump.

All electrical components required for the operation of the heat

pump are located on the control panel.

For detailed instructions concerning the connection and function-

ing of the heat pump controller, refer to the operating manual

supplied with the controller.

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 have to be provided by the customer. The required

conductor cross-section is to be selected according to the power

consumption of the heat pump, the technical connection require-

ments of the respective utility company as well as all applicable

regulations. Details on the power consumption of the heat pump

are listed on both the product information sheet and the type

plate. The connection terminals are designed for a max. conduc-

tor cross section of 10 mm2.

ATTENTION!

Observe the clockwise rotating field when connecting the mains cable (if

rotating field is not clockwise, the heat pump will not work properly and

will be very noisy).

7 Commissioning

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:

The heat pump must be fully connected, as described in

Chapter 6.

The heat source system and the heating circuit must have

been filled and checked.

All valves that could impair proper flow in the well and heat-

ing circuits must be open.

The heat pump controller must be adapted to the heating

system in accordance with the controller’s operating instruc-

tions.

7.3 Start-up Procedure

The heat pump is started up via the heat pump controller.

ATTENTION!

The heat pump must be started up in accordance with the installation and

operating instructions of the heat pump controller.

If an overflow valve is fitted to assure the minimum heating water

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

ments of the respective heating system. Incorrect adjustment

can lead to faulty operation and increased energy consumption.

We recommend 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 unfavourable 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 table below for the current heat source tem-

perature. The temperature spread should be measured as close

as possible to the heat pump. The heating element of mono en-

ergy systems should be disconnected.

Any faults occurring during operation are displayed on the heat

pump controller and can be corrected as described in the operat-

ing manual of the heat pump controller.

Heat source

temperature Max. temperature spread

between heating flow and return

flow

From To

7° C 12° C 10 K

13° C 18° C 11 K

19° C 25° C 12 K

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Dimplex WI 14CS Manual

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