Bedienungsanleitung Dimplex LAW 9IMR (Seite 35 von 100) (Deutsch, Englisch, Französisch)

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www.gdts.one 452162.66.04 · FD 9912 EN-9

LAW 9IMR - LAW 14ITR English

7 Commissioning

7.1 General

To ensure that commissioning is performed correctly, it should

only be carried out by an after-sales service technician author-

ised by the manufacturer. This may be a condition for an addi-

tional guarantee (see "Warranty service").

7.2 Preparation

The following items must be checked prior to commissioning:

All of the indoor unit connections must be installed as de-

scribed in Chapter 6.1.

All of the outdoor unit connections must be installed as de-

scribed in Chapter 8.

All valves which 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 settings of the heat pump manager must be adapted

to the heating system in accordance with the manager's

operating instructions.

The heating water circuit, domestic hot water cylinder and

buffer tank of the indoor unit must be completely filled and

purged.

Ensure that the condensate drain functions properly.

The outflow from the heating water pressure relief valve

must also function correctly.

Purging the heating system:

Ensure that all heating circuits are open, purge the system

at the highest position and refill water if necessary (comply

with static minimum pressure).

7.3 Commissioning procedure

The heat pump is commissioned via the heat pump manager.

Settings should be made in compliance with the HPM's instruc-

tions.

The overflow valve integrated inside the unit must be adjusted

to the requirements of the respective heating system. Incorrect

adjustment can lead to faulty operation and increased energy

consumption. We recommend carrying out the following pro-

cedure to set the overflow valve correctly:

Close all heating circuits that may also be closed during opera-

tion (depending on how the heat pump is being used) so that

the most unfavourable operating status (with regard to the

water flow) is achieved. This normally means the heating cir-

cuits 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 heat flow and

heat return flow, listed in the following table, for the current

heat source temperature. The temperature spread should be

measured as close as possible to the inside of the unit. The

heating element of mono energy systems should be discon-

nected during commissioning.

At heating water temperatures below 7 °C, commissioning is

not possible. The water in the buffer tank must be heated to at

least 18 °C with the 2nd heat generator.

The following procedure must then be followed to ensure prob-

lem-free commissioning:

1) Close all consumer circuits.

2) Ensure that the heat pump has the correct water flow.

3) Use the manager to select the automatic operating mode.

4) In the special functions menu, start the "Commissioning"

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 rate is constantly raised by

slightly opening the respective heating circuit. The heat-

ing water temperature in the buffer tank must not be al-

lowed to drop below 20 °C during this process. This en-

sures that the heat pump can be defrosted at any time.

7) When all heating circuits are fully open and a return tem-

perature of at least 18 °C is maintained, the commissioning

is complete.

ATTENTION!

Operating the heat pump at low system temperatures may

cause the heat pump to break down completely. After a

prolonged power failure, the commissioning procedure

detailed above must be followed.

Heat source

temperature Max. temperature spread

between heating flow and return

flow

from to

-20 °C -15 °C 4 K

-14 °C -10 °C 5 K

-9 °C -5 °C 6 K

-4 °C 0 °C 7 K

1 °C 5 °C 8 K

6 °C 10 °C 9 K

11 °C 15 °C 10 K

16 °C 20 °C 11 K

21 °C 25 °C 12 K

26 °C 30 °C 13 K

31 °C 35 °C 14 K

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