Bedienungsanleitung Dimplex SI 14BS (Seite 15 von 40) (Deutsch, Englisch, Französisch)

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8.3

7.3 Heat Source Connection

The following procedure must be observed when connecting the

heat source:

Connect the brine pipe to the heat pump flow and return.

The hydraulic plumbing diagram must be adhered to.

ATTENTION!

The supplied dirt trap must be inserted in the heat source inlet of the heat

pump to protect the evaporator against the ingress of impurities.

In addition, a micro bubble air separator must be installed in the

heat source system.

The brine liquid must be produced prior to charging the system.

The liquid must have an antifreeze concentration of at least 25 %

to ensure frost protection down to -14 °C.

Only monoethylene glycol or propylene glycol-based antifreeze

may be used.

The heat source system must be de-aerated and checked for

leaks.

ATTENTION!

The brine solution must contain at least a 25 % concentration of a

monoethylene glycol or propylene glycol-based antifreeze, which must

be mixed before filling.

7.4 Electrical Connection

The following electrical connections must 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 X6: L1/L2/L3/PE.

Connection of the brine circulating pump (to be provided by

the customer) to the control panel of the heat pump via ter-

minal X1: PE and pump contactor K5: 2/4/6.

All electrical components required for the operation of the heat

pump are located on the control panel.

For detailed instructions on how to connect the heat pump con-

troller and how it functions (e.g. external wall sensor included in

the scope of supply), please refer to the operating manual sup-

plied 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).

8 Start-UP

8.1 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).

8.2 Preparation

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

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

Chapter 7.

The heat source system and the heating circuit must have

been filled and checked.

The dirt trap must have been inserted in the brine inlet of the

heat pump.

All valves that could impair proper flow in the brine 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.

8.3 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 maintain the minimum heating

water flow rate, the valve must be adapted to the requirements of

the heating system. Incorrect adjustment can lead to faulty oper-

ation and increased energy consumption. We recommend carry-

ing out the following procedure to correctly adjust the overflow

valve:

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

operation so that the most unfavourable operating state - with re-

spect 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 heat

pump controller's operating instructions.

Heat source

temperature Max. temperature spread

between heating flow and return

flow

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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