Supplied By www.heating spares.co Tel. 0161 620 6677
D
45
6
REMOVAL AND REPLACEMENT OF PARTS
Before removing appliance case, isolate
the gas and electrical supplies. Isolate
boiler from the system and drain before
removing any component in the
waterways. Ensure that the appliance is
1. Outer Case
Unlock the two clamps locking A,
which secure the front casing .
Remove the front panel
5. Ignition Electrode (rignt side)
Carry out steps 1 and 2 as above.
Unscrew the self taping screws (T20).
Disconnect the lead from the wiring loom.
Reassemble in reverse order.
6. Burner Assembly
Carry out steps 1,2,3 disconnect
electrodes as mentionned in section 4
and 5. Remove two self taping screws
securing burner.
Reassemble in reverse order.
Carry out combustion tests using the test
points on the turret
7. Gas valve
Carry out step 1. Disconnect the gas
valve wire from the main wiring loom.
Disconnect the electrode wire.
Remove gas pipe nut (spanner 30).
Remove the two screws securing the gas
valve from the botton plate.
Reassemble in reverse order replacing
the gasket.
8. Fan Assembly
Carry out step 1. Disconnect the wire
connectors and the pressure pipes noting
positions. Remove the screws T25 fixing
the fan on the flue outlet, clean the
pressure points. Turn the fan
anticlockwise to disengage from flue
outlet and lift clear.
Reassemble in the reverse order
ensuring that the wiring is reconnected
correctly and the screw tightened.
9. DHW flow switch plunger
Carry out step 1.Close the water inlet
tap.Remove the clip securing the water
brass inlet connection.
Remove the brass connection and the
DHW flow switch plunger.
Reassemble in the reverse order take
care to the wise.
10. Pressure Switch
Carry out step 1. Disconnect the wire
from the pressure switch. Disconnect the
two pressure pipes.
Remove the T20 upper screws securing
the pressure switch from the chassis.
11. DHW Reed Relay
Carry out step 1. Disconnect the DHW
flow switch cable (orange) and remove
the clip to change the REED Relay .
Reassemble in reverse order.
2. Combustion Chamber
Carry out step 1. Unscrew five self
tapping screws to release the combustion
chamber front panel and lift clear.
Reassemble in reverse order.
Screw driver T20
3. Burner Manifold
Carry out steps 1 as above. Remove the
nut between manifold and gas pipe.
Unscrew the 4 screws securing the
burner and lift clear.
Reassemble in reverse order.
4. Ionisation Electrode (left side)
Carry out steps 1 and 2 as above.
Unscrew the self taping screws (T20).
Disconnect the lead from the wiring loom.
Reassemble in reverse order.
12. Drain down
DWH : close the DWH inlet tap and open
a tap on the installation.
CH : Open the pressure relief value.
13. 3-Way valve
Carry out step 1. Drain boiler as in step 12.
Disconnect the wire from the 3 way valve.
Remove the clip and the 3 way valve
motor. Unscrew the two T20 screws using
a small screwdriver. Remove the 3 way
valve body using a pliers.Reassemble in
reverse order.
14. Secondary heat exchanger 45
Drain both circuits of the boiler as in step
12. Remove the 3 way valve motor as in
step 13. Unscrew the two T20 fixing
screws D. Reassemble in reverse order.
The heat exchanger is so designed that it
cannot be remounted incorrectly.
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