Tab.78 Other inspection and maintenance operations
Check
Operations to be carried out
Electrical connections
Replace any faulty parts and cables.
Screws and nuts
Check all screws and nuts (cover, support, etc.).
Insulation
Replace any damaged sections of insulation
Filters
Clean the filters.
Flow rate in heating mode
Check the flow rate on the various heating circuits.
Flow rate in domestic hot water mode
Check the flow rate in domestic hot water mode.
Target flow rate:
AWHP 4.5 MR: 14 l/min
AWHP 6 MR-3: 14 l/min
AWHP 8 MR-2: 18 l/min
Hydraulic pressure
Recommended hydraulic pressure: 1.5 bar to 2 bar
Plate heat exchanger for the solar option
Clean the solar circuit plate heat exchanger.
Magnesium anode
Check the condition of the magnesium anode. Replace it if
necessary.
Outdoor unit evaporator
Clean the outdoor unit's evaporator.
Condensate collector box
Check the water level in the box. In case of stagnation, clear
the siphon or check the lift pump is operational.
Casing
Clean the outside of the appliance using a damp cloth and a
mild detergent.
For more information, see
Clean the magnetic sieve filters, page 104
Checking the minimum flow of the direct circuit, page 61
Setting the flow rate of the second circuit, page 62
Cleaning the plate heat exchanger, page 107
Checking the magnesium anode, page 107
10.3 Drain the appliance on the heating circuit side
The heating does not usually need to be drained. However, it may be
necessary in certain cases, for example prolonged inactivity with a risk of
frost in the building.
1. Close the drain valve on the heating circuit by turning the Allen key a
quarter turn.
2. Open the bleed screw.
3. Check that the water flows into the condensate collector box.
4. Await the complete drainage of the heating circuit.
5. Close the screw and the drain valve.
10.4 Draining the domestic hot water circuit
The domestic hot water circuit must be drained to enable the tank to be
descaled, or if the appliance is to be stored in a location affected by frost.
1. Close the installation's water inlet valve by turning it a quarter-turn
with the Allen key.
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10 Maintenance
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