Instruction manual

31
Maintenance
Filter
The fi lter ensures that no debris enters the heat exchangers. Over time the
fi lter can become blocked and will require cleaning. There are fi lters on
both the primary and collector circuits. To clean the fi lters:
1. Disconnect the heat pump from the mains electricity supply.
2. Close the valve and unscrew the sealing cap.
3. Remove the circlip holding the fi lter in the valve using the circlip pliers
supplied.
4. Lift out the fi lter from the valve and wash clean with water.
5. Refi t the fi lter, the circlip and sealing cap.
6. Open the valve and start the heat pump.
On the primary circuit the fi lter is
fi tted inside the heat pump.
Note
Filter Circlip Sealing cap
Particle fi lter
Expansion vessel
A plastic expansion vessel is connected to the heat pump heat transfer
circuit (collector circuit). The level in the expansion vessel should not fall
below the minimum level of 1/3 of the volume in the vessel.
The heat pump must be operating all the time while fi lling.
1. Remove the plug from the valve on top of the tank. Now carefully open
the valve (fi gure 1).
2. Check that the valve is fully open (fi gure 2).
3. Fill with anti-freeze or water (to 2/3) with a clean watering can or
similar (fi gure 3).
4. Close the valve and refi t the plug (fi gure 4).
Figure 1
Figure 2 Figure 3 Figure 4
Max. level
Min. level