COMMISSIONING
8COMMISSIONING
8.1 General Information
To ensure proper commissioning it should be carried out by a customer service authorised by the manu- facturer. 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 have been filled and checked.
-The strainer must have been fitted in the sole inlet of the heat pump.
-In the brine and heating circuits all valves that might impair the proper flow must be open.
-The settings of the heat pump controller must be adapted to the heating installation in accordance with the instructions contained in the controller's operating manual.
8.3 Commissioning Procedure
The
CAUTION! Commissioning is to be effected in accordance with the installation and operating manual of the heat pump controller.
Where an overflow valve is fitted to assure the minimum heating water flow rate, the valve must be set in accordance with the requirements of the heating installation. An incorrect setting may result in various error symptoms and an increased elec- tric power consumption. To correctly set the overflow valve, the following procedure is recommended:
Close all of the heating circuits which 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 heating circuits are those 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 temperature the maximum temperature difference between heating supply and return flow temperature 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 | |||
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0 | °C | 10 K | ||
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1 | °C | 5 | °C | 11 K |
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6 | °C | 9 | °C | 12 K |
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10 | °C | 14 | °C | 13 K |
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15 | °C | 20 | °C | 14 K |
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21 | °C | 25 | °C | 15 K |
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Any malfunctions occurring during operation are displayed on the heat pump controller and can be corrected as described in the operating manual of the heat pump controller.
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