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22
33
BURNER REMOVAL
34
ELECTRODE ALIGNMENT
6.5
AIR PRESSURE SWITCH PIPES
6.6
HEAT EXCHANGER
6.7
GENERAL
6.8
RE-ASSEMBLY
6.9
RE-COMMISSIONING
6.10
SEALED WATER SYSTEMS
6.11
FINAL CHECKS
Check that the pressure switch sensing pipes are not blocked or
damaged. It is not necessary to remove the air pressure switch,
this is not adjustable and does not require any servicing.
a)
Inspect the heat exchanger from both above and below the
fins. If necessary, clean the fins with a soft, non metallic brush.
a)
Check that the combustion chamber insulation is not
damaged.
b)
Clean the inside of the sealed chamber using a soft brush or
(preferably) a vacuum cleaner.
c)
Check that the sealed chamber front panel seal is intact and in
good condition. Replace if necessary.
d)
Always wear a protective mask when cleaning the
appliance.
Re-assemble all components in reverse order except do not pivot
the fascia panel back into position or fit the casing front panel
until the servicing work has been completed.
When re-fitting the burner it is essential to ensure that the burner is
level as shown in Figure 33 and that it is correctly assembled into
the injector.
Check that all joints and seals are correctly fitted. Note that fan
polarity is immaterial.
a)
Loosen the screw at the burner pressure test point and connect a
pressure gauge to this point (Fig. 35). Turn on the gas and
electricity supply and light the boiler as described in section 5.2
b)
Check the operation of the appliance in both central heating
and DHW modes and ensure that the DHW maximum and
minimum burner pressures after ten minutes running are as stated
on the data badge.
c)
Remove the pressure gauge and tighten the sealing screw.
Re-light the appliance and test for gas soundness.
a)
Carefully disconnect the tab connectors on the fan wiring from
the fan.
b)
Disconnect the air pressure switch sensing pipes from the fan,
noting their positions
c)
Remove the fan assembly by unscrewing the two screws,
lowering the assembly and lifting it forwards.
d)
Inspect the fan assembly (especially the impeller and the
venturi) for dirt, damage, or signs of wear. If necessary clean
the impeller or/and venturi using a soft brush or vacuum
cleaner. Spin the impeller and check that it rotates freely,
without noise, and without imbalance. If there is any sign of
deterioration or damage, replace the fan.
a)
Check the operation of the pressure relief valve as described
in section 5.1.
b)
Check the correct operation of the pressure gauge by noting
the reading when cold and check that the pressure increases
with temperature. Replace the gauge if readings are suspect.
c)
Check that the system is at it's original (cold) design pressure
(indicated by the pointer on the pressure gauge). If necessary,
re-pressurise the system as described in section 5.1 and
search for and rectify any leaks causing loss of water.
a)
Pivot the fascia panel into the upright position and secure with
the two screws, then re-fit the front casing panel (Fig. 31).
b)
Return all appliance and external controls (if fitted) to their
original settings.
IGNITION ELECTRODE
DETECTION ELECTRODE
(flame sensor)
6.4
FAN ASSEMBLY
12.2
20.0
2.5 ± 0.5
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•
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Содержание Ace High
Страница 8: ...8 EXPLODED DIAGRAM for key no references see spare parts catalogue Drawing amended 8 6 00 6 ...
Страница 25: ...INTERNAL WIRING DIAGRAMS 7 7 1 FUNCTIONAL FLOW WIRING DIAGRAM 23 ...
Страница 26: ...7 2 ILLUSTRATED WIRING DIAGRAM 24 ...
Страница 40: ...Ace Ace High Wickes Combi 82 102 05 04 ACE ACE HIGH WICKES COMBI 82 102 ...