Dimplex S1 7KS 8COMMISSIONING, 9CARE/CLEANING9.1 Care, General, Preparatory Steps

COMMISSIONING

CARE/CLEANING

8COMMISSIONING

8.1 General

To ensure proper commissioning it should be carried out by an after-sales service authorised by the manufacturer. Only then can an extended warranty period of 3 years in total be granted (cf. Warranty service).

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 be filled and tested.

-Strainer and vent must be fitted in the brine inlet of the heat pump.

-All valves that could impair the proper water flow must be open in the brine and heating circuits.

-The heat pump controller must be adapted to the heating installation in accordance with the instructions contained in its operating manual.

-Proper condensate drainage must be ensured.

-Drainage of the liquid emerging from the brine and heating water overflow valves must be ensured.

8.3 Commissioning Procedure

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

pump controller.

CAUTION! Commissioning of the heat pump must be carried out in accordance with the installation and operating manual of the heat pump controller.

The delivery rate of the circulating pump must be adapted to the heating system.

The setting of the overflow valve must be adapted to the requirements of the heating system. An incorrect setting may result in various error symptoms and an increased electric power consumption. To correctly set the overflow valve, the following procedure is recommended:

Close all of the heating circuits that 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 are the heating circuits 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 tem- perature the maximum temperature difference between heating supply and return flow tem- perature is obtained, as indicated in the table below. The temperature difference should be measured as closely to the heat pump as possible. In mono-energetic systems, the electric heating element is to be deactivated.

Heat source temperature				max. difference between heating
from		to		supply and return temperature
-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 malfunctions occurring during operation are indicated on the display of the heat pump controller and can be corrected as described in the operating manual of the heat pump controller.

9CARE/CLEANING9.1 Care

The heat pump is designed for maintenance-free operation. To prevent operating malfunctions caused by dirt deposits in the heat exchangers, care must be taken that no contamination whatsoever can enter the heat source and heating systems. In the event that operating malfunctions due to contamination occur nevertheless, the system should be cleaned as described below.

9.2 Cleaning of Heating Side

The ingress of oxygen into the heating water circuit may result in the formation of oxidation products (rust). It is therefore important - in particular with respect to the piping of the underfloor heating systems - that the installation is executed in a diffusion-proof manner.

Also residues of lubricating and sealing agents may contaminate the heating water.

In the case of severe contamination leading to a reduction in the performance of the condenser in the heat pump, the system must be cleaned by a heating technician.

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