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An annual maintenance inspection must be carried
out.
The main items to be checked are as follows:
1) Check that the combustion gas circuit, the fan
and the burner are clean and that the ignition
electrodes, ionisation probes and seals are in
good condition.
The burner can be cleaned using a household va-
cuum cleaner, placing the suction tube first on the
air inlet, then on the gas inlet (with the burner dis-
mantled).
The heat exchanger can be cleaned by spraying
water at it, with the burner dismantled (the water
drains away via the condensate drainage siphon
trap).
Clean the siphon and fill it with water.
2) Combustion gas checking CO
2
, CO (see table
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3) Check the flame monitor by disconnecting the io-
nisation probe (safety shut-off after two attempts
at ignition).
4) Check that the regulation is operating correctly.
5) Inspect the condensate drainage siphon trap.
6) The stainless steel hot water tank is not easily
subject to sealing. Nevertheless, the inspection
hatch enables easy access to the tank and the
heat exchanger.
7) Check the anode:
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- Stop the warm water supply in the installation by
using a stop-valve.
- Make the pressure inside the WW-tank go down
by opening a hot water cock.
- Unscrew the anode.
- Control the corrosion stage of the anode. If its
weight is under 150 g, replace it with a new one.
Replace the sealing and screw the new anode
- Open the water supply in the installation.
)LJ
10
≈
20
2.25
!
!
Anode
Seal
)LJ
