
SERVICING
32
mini HE
--- Installation & Servicing
35 BURNER REMOVAL AND CLEANING
1 Disconnect the electrical supply.
2 Remove outer and inner casing (refer to frame 34).
3 Undo the screws A and remove the fan holder bracket B
and the combustion chamber panel C.
4 Remove the screws D and the plate E.
C
A
A
B
D
E
5 Disconnect the electrodes leads.
6 Undo the four screws F placed at the right and left sides of
the burner and extract it.
F
7 Brush off any deposits that may have collected on the
burner, ensuring that the flame ports are unobstructed.
Note: brushes with metallic bristles MUST NOT be used.
8 Inspect the spark and detection electrodes. Ensure they
are clean and in good condition; replace if necessary.
9 Check the spark electrodes gap is correct.
4 mm (5/32”)
Ignition
Detection
Male
Female
10 mm
Burner blade
(3/8”)
10 Check that the spark and detection electrodes leads are in
good condition and renew as necessary.
36 BURNER PRESSURE CHECK
After any servicing, reference should be made to:
--- Table 2 and Table 3 (or the data plate) which quote details
of the burner pressures.
If the burner pressures are incorrect ensure the inlet pressure,
with the appliance running, is correct (refer Table 1).
If the burner pressures require adjustment refer to frame 27
“To adjust pressures”.
If the appliance still does not operate correctly refer to the
appropriate fault finding chart.
37 CLEANING THE HEAT EXCHANGER
1 Open the combustion chamber as explained in steps 1 to
3 of frame 35.
2 Place a plastic sheet or similar beneath the heat
exchanger and remove all visible loose deposits from the
heat exchanger fins, using a suitable brush.
38 RE---ASSEMBLY
Re---assemble the boiler in the following order:
3 Refit the burner.
4 Reconnect the electrodes to the ignition pcb. See frame
35 for correct connectors.
5 Refit the combustion chamber panel and the fan holder
bracket.
6 Refit the inner case cover.
IMPORTANT
. Ensure the boiler sealing panel is correctly
fitted and that a good seal is made.
7 Refit the boiler side and front panels.
8 Turn on the gas supply at the gas service cock.
9 Reconnect the electrical supply.
S
E
R
V
IC
IN
G
Содержание mini HE C24
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