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4
SERVICING
4.5
SERVICING THE BURNER
4.5.1
OIL BURNER
-
Check the main filter on the oil line and clean it if necessary.
-
Check the nozzle line: check, clean or change the nozzle and filter,
check that it is clean and that the electrodes and flame holder are
properly set.
-
Replace the whole unit and check that the safety devices are
working properly
-
Adjust the combustion parameters.
4.6
EMPTYING THE BOILER
4.6.1
EMPTYING THE PRIMARY CIRCUIT
1. Switch the power to the boiler off at the mains switch installed by
the electrician.
2. Close the boiler system's isolating valves (1).
3. Connect a hose to the drain cock (2).
Make sure that it is properly attached.
4. Open the drain cock and let the hot water drain out.
5. When the boiler is empty, return the valves to their initial positions
4.6.2
EMPTYING THE DOMESTIC HOT WATER TANK:
1. Switch the mains power to the boiler off at the external switch
installed by the electrician.
2. Remove the pressure from the primary circuit.
3. Close valves (A) and (B).
4. Open valves (C) and (D) (first C then D).
5. Let the water drain away.
6. After emptying, return the valves to their initial positions.
To allow the tank to be emptied, valve (C) must be
situated at ground level.
4.7
SPARE PARTS
Please refer to the specific document available from ES or your
distributor.
8
(CENTRAL HEATING):
Fig. 13a: Emptying the primary circuit
A
C
Fig. 13b: Emptying the hot water circuit
1
1
2
B
D
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