62
2000225294A
16 Replacement of Parts
16.35 Heat Exchanger
Refer to
section 16.1.
Drain the boiler heating circuit,
see section 13.9.
Drain the boiler hot water circuit,
see section 13.10.
Remove the flue elbow, water and gas connections at the
bottom of the boiler, any electrical connections.
Lift the boiler up and off the hanging bracket, carefully lay the
boiler on its back on the floor.
IMPORTANT:
With regards to the Manual Handling Operations,
1992 Regulations, the following lift operation exceeds the
recommended weight for a one man lift.
Carefully pull up turn and pull forward to remove the flue duct.
Remove the spark electrode,
see section 13.2.
Remove the central heating flow thermistor,
see section 16.14.
Remove the igniter unit,
see section 16.3.
Remove the transformer,
see section 16.5.
Remove the burner and fan,
see section 13.3.
Unclip and remove the gas supply pipe.
Remove the condensate trap,
refer to the relevant part of
section 13.5.
(F24E & F28e ONLY)
Remove the plate to plate heat exchanger,
see section 16.9.
(F24E & F28e ONLY)
Remove the domestic hot water pipe from
the boiler at the domestic hot water connector and the electrical
connections to the thermistor.
(F24E & F28e ONLY)
Remove the domestic cold water supply
pipe from the boiler.
Disconnect the overheat cutoff thermistor electrical connections,
see diagram 16.13.
Remove the central heating flow pipe from the boiler.
Remove the syphon adapter,
see diagram 16.24.
Remove the pump with it's housing. To remove disconnect
securing nut and securing wire clip,
see diagram 16.25.
Remove the two screws securing the pump connector carefully
lever/pull down to remove the pump connector from it's housing,
see diagram 16.26.
(F24E & F28e ONLY)
Disconnect flow sensor electrical
connections,
see diagram 16.15.
Unscrew to remove the air vent from the top of the boiler.
Lift the heat exchanger up and ease forward to remove.
IMPORTANT NOTES.
When re-fitting parts ensure all grommets are fitted correctly.
Check all 'O' rings and sealing washers, replace as required.
Ensure all securing clips are seated correctly.
Commission the boiler on completion,
refer to section 12.
Diagram 16.24
Diagram 16.25
Diagram 16.26
12266
12265
12267
SYPHON
ADAPTOR
PUMP
AND
HOUSING
WIRE CLIP
SECURING NUT
PUMP
CONNECTOR
SECURING
SCREWS
(2 OFF)
Summary of Contents for EnviroPlus F24e
Page 18: ...18 2000225294A Diagram 5 1 11907 5 Boiler Schematic F24e F28e ONLY ...
Page 19: ...19 2000225294A 5 Boiler Schematic Diagram 5 1a 12248 BYPASS F28e SB ONLY ...
Page 49: ...49 2000225294A 14 Fault Finding 12410 Diagram 14 4 ...
Page 51: ...51 2000225294A 15 Wiring Diagram Diagram 15 1a 12240 F28e SB ONLY ...