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2.1 Installation methods
P
7
1 2
4
6
9
11
hot water supply
tap water
Indoor unit
Outdoor unit
Oil fired boiler
Flexible
pipe 50cm
Buffer
tank
Radiator
Please observe
All drawings contains buffer tank , since this is normally used for better temperature balance form
heat pump and heating / cooling system . The sensors are therefore placed in the buffer tank . If you
don't have buffer tank in your system , the sensors needs to be put directly on the water lines . Make
sure that you get good readings by only connecting the sensors to copper pipes or similar .
Please be aware of
All the sensors are put on the indoor unit . Please adjust the position of sensors according to your
real application .
All sensors ( TW , TH and TC ) needs to be connected to the PCB to avoid failure codes , event hey
are not in use in your application .
Make sure to insulate the pipes and sensors if sensors are put directly on the water lines .
Application 1
For space heating
In this application heat pump is connected on the return line of the heating system . The unit can be
controlled by fixed or variable water temperature ( curve , based on ambient temperature ) .
This heat pump has no internal back up , so an existing heating source like oil burner etc . needs to
be connected as back up . The installation also demands that the backup source have a working
controller to control the supply temperature to the heating system . When the heating demand
exceeds the heat pump capacity , the backup source automatically starts supporting the heat pump .
This means the heat pump curve or temperature controller should be set slightly above the existing
heating source controller . Then heat pump will always have the priority .
All sensors ( TW , TH and TC ) needs to be connected, even they have no function for the chosen
application. Locate water temperature sensors on return line if no buffer tank is installed. Make sure
the sensors have good contact with the pipe, and insulate the pipes and sensors.
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2.INSTALLATION
Installation drawing of unit connected directly to heating system. (not all installers use buffer tank).
a. With external water pump, add by pass between turn and return line between indoor unit and external
circulation pump
b. Without external water pump, an adjustable bypass (ball valve) is required to ensure flow for heat pump
if thermostat close the flow in the heating system.
c. External circulation pump needs to be connected to indoor unit water pump terminal (P0)
Minimum piping dimensions required.
a.
≤
6kW heat pump output, minimum 22 mm copper piping or similar
b.
≤
13 kW heat pump output, minimum 28 mm copper piping or similar. For 13 kW heat pump 35 mm
copper can be required if it is much fittings and angles.
c.
≤
20 kW heat pump output, minimum 35 mm copper piping or similar.