Dimplex SI 7ME, SI 14ME, SI 9ME, SI 5ME, SI 11ME manual Commissioning, Start-up Procedure, Preparation

8

8	Commissioning	8.3 Start-up Procedure
8.1	General Information	The heat pump is started up via the heat pump controller.
		ATTENTION!

English

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).

8.2Preparation

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 be 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.

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.

Heat source		Max. temperature spread
temperature		between heating flow and return
From	To	flow
-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

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.

E-6