Gorenje HPWW12, Instructions For Installation And Start-Up

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Water-to-water Heat Pump
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13. Switching on Additional Heat Sources
Switching on Additional Heat Source K27
Using the controller incorporated in the Gorenje heat pump, you can control the switching on (or
off) of the additional heat source (gas furnace, oil heater) depending on the outside temperature.
This will support the heat pump in the process of heating the sanitary water (extra setting) and
heating water, providing energy and cost saving of the heat pump (the decrease of COP reduces
cost efficiency of operation). Once there is no need for sanitary water or heating water, the K27
additional heat source can be disconnected.
Procedure:
Define the controller output as 'Heat demand K27' (user level: 'Setting’ before start-up, menu
'Configuration', parameters from 5890-5896).
Define the temperature range for the switching on and off of the extra heat source (user level OEM,
menu 'Configuration’, parameter 6128 (the unit switches on when the temperature is below the set
value (factory set at 0°C) and parameters 6129 (the unit switches off when the temperature is
below the set value (factory set at -30°C)).
If extra heating is used for the heating of sanitary water, the related 5736 should be set to 'off' (user
level: 'Setting’ before start-up, menu 'Configuration', parameter 5736 to 'off'.
Switching on of Electric Heater in the K6 Sanitary Water Tank
The electric heater in the hot water tank is switched on when sanitary water needs to be heated,
but due to malfunction of the heat pump, this is not possible. Also, the heater is switched on if the
temperature setting for sanitary water is too high and the capacity of the heat pump is insufficient.
In such a case, the heat pump will switch off (because of the high pressure reached) and the
heater will heat the sanitary water to the set temperature.
Procedure:
Define the controller output as 'Electric Heater for K6 Sanitary Water’ (user level: 'Setting’ before
start-up, menu 'Configuration', parameters from 5890-5896).