7 181 465 347 (01.07)
Appendix
47
5.3 List of most important replacement parts
Component Order no. Remarks
Switchbox
PCB control
board
8 748 300 385
Transformer 8 747 201 358
Ignition lead 8 714 401 878
20-pin connector
lead assembly
8 714 401 912
Fuse 1 904 522 730 T 0,5 A
Fuse 1 904 522 740 T 1,6 A
Fuse 1 904 521 342 T 2,5 A
Code plug included in
Conversion kit
G20 -> 31
7 710 149 050 ZWBR
8-30
Conversion kit
G31 -> G20
7 710 239 086 ZWBR
11- 30
Conversion kit
G20 -> G31
7 710 149 051 ZWBR
11 - 37
Conversion kit
G31 -> G20
7 710 239 087 ZWBR
14 - 37
Conversion kit
G20 -> G31
7 710 149 052 ZSBR
7-28
Conversion kit
G31 -> G20
7 710 239 088 ZSBR
11-28
Conversion kit
G20 -> G31
7 710 149 053 ZBR 8-35
Conversion kit
G31 -> G20
7 710 239 089 ZBR 11-35
Conversion kit
G20 -> G31
7 710 149 046 ZWBR
7-28
Conversion kit
G31 -> G20
7 710 239 082 ZWBR
11-35
Conversion kit
G20 -> G31
7 710 149 047 ZWBR
11-35
Conversion kit
G31 -> G20
7 710 239 083 ZWBR
14-35
Table 7
Heat exchanger
Temperature lim-
iter STB
8 729 000 144 110 °C
Flue gas temper-
ature limiter
8 729 000 144
Temperature
sensor, CH flow
8 714 500 054 NTC
Burner
Electrode
assembly
8 718 107 064
Gas valve
Gas valve 8 747 003 516
Gas valve 8 747 003 515 ZBR 11/
14..42A
Other components
Fan 8 717 204 325
Gas supply pipe 8 714 401 885
Textdisplay 8 747 208 081
Plate-type heat
exchanger
8 715 406 659 ZWBR
7/11-28 A.
Component Order no. Remarks
Table 7
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