SERVICING AND SPARES
Greenstar FS CDi
ErP
6720818079 (2016/04)
38
6.9.10 Burner
▶ Turn the gas cock and the master switch to their OFF positions.
▶ Isolate the appliance from the power supply.
▶ Remove the clips [3a], castellated nuts [3b] and springs [3c] from
the studs [3].
▶ Remove the nut [4a] from the rear stud [4].
▶ Disconnect the mixer unit from the fan.
▶ Remove the connector and earth wire from the fan.
▶ Remove the burner cover plate [5] and fan assembly [6].
▶ Remove the burner [7].
▶ Re-assemble the new burner in reverse order.
▶ Replace the burner seal [8] with a new one.
▶ Refer to the section “Re-assembly of the burner cover” on page 34.
▶ After re-assembly check that the CO/CO
2
levels as described in the
section “Setting the air/gas ratio” on page 34
6.9.11 Primary heat exchanger:
▶ Isolate the appliance from the power supply.
▶ Turn off all the isolation valves.
▶ Drain down the appliance.
▶ Move the control panel into the service position.
▶ Remove the inner case door.
▶ Remove the fan assembly, burner, and gas mixing unit.
▶ Disconnect and remove the sensors connected to heat exchanger.
▶ Remove the condensate trap.
▶ Remove the internal flue elbow and tube from the boiler sump.
▶ Release the return pipe union [10] at the base of the heat exchanger.
▶ Remove the plastic nut [11] from the base of the inner casing.
▶ Release the retaining bracket [9] from the inner chassis
▶ Remove the heat exchanger from inner casing.
▶ Ensure that heat conductive paste is used on sensors when refitting.
▶ Check the seals and replace if necessary.
▶ After re-assembly check that the CO/CO
2
levels are as described in
the section “Setting the air/gas ratio” on page 34.
Fig. 61 Primary heat exchanger
6.10
Short parts list
WARNING:
Burner
▶ Do not remove the burner unless a new gasket is
available for re-assembly.
6720818079-26.1W
o
1
2
3
9
4
5
4a
7
8
11
10
3a
3b
3c
6
Burner
8 737 703 148
GC No. E27 200
Fan 42kW
8 718 644 395 0
Gas valve
8 716 118 167
GC No. H56 469
Set of electrodes including seal
8 718 664 301 0
Burner seal
8 711 004 168 0
GC No. E27 201
Flow NTC
8 714 500 087 0
GC No. E74 536
Condensate pump
8 716 114 077 0
GC No. H66 921
Fan 30kW
8 716 117 325
GC No. E74-539
Heat exchanger overheat stat
8 714 500 056
GC No. H08 291
Auto air vent
8 718 505 041 0
GC No. E00 717
Control unit
8 717 207 833 0
Flue overheat stat
8 710 506 267
Heat exchanger inspection cover seal
8 710 103 153 0
Table 14 Short parts list
