Parts List - Bosch 520-HN -L Manual

9.3

Parts list

Item Description
1 Front cover
2 Shield
3 Trade mark badge
4 Flow control knob
5 Power adjustment knob
6 Draft Diverter
7 Exhaust pipe union Ø128
8 Angle bracket
10 Heat exchanger
11 Hydrogenerator
12 Cold water pipe
13 Main burner NG
13 Main burner LP
14 Connector
15 Pilot burner
16 Electrode/sensor group
17 Ignitor bracket
18 Pilot screen
19 Gas valve LP
19 Gas valve NG
20 Pilot orifice LP
20 Pilot orifice NG
21 Microswitch
22 Gas pressure regulator LP
22 Gas pressure regulator NG
23 Water valve
24 Watervalve pushrod
25 Diaphragm
26 Inlet water connection
27 Selector screw
28 Ignition unit
29 Cable
30 Flue gas sensor
Table 13
520 HN
Item
Reference
31
8 738 708 498
32
8 738 708 499
33
8 701 103 135 0
34
8 702 000 297 0
35
8 702 000 295 0
36
8 705 505 442 0
37
8 705 504 046 0
38
8 708 003 192 0
39
8 705 406 386 0
40
8 707 406 095 0
41
8 700 715 109 0
42
8 708 120 620 0
43
8 708 120 621 0
44
8 705 209 056 0
45
8 708 105 655 0
46
8 708 107 013 0
47
8 701 300 010 0
48
8 700 507 066 0
49
8 707 011 922 0
50
8 707 021 011 0
51
8 708 200 321 0
52
8 708 200 322 0
53
8 707 200 020 0
54
8 707 406 083 0
Table 13
8 707 406 084 0
8 707 006 344 0
8 703 204 051 0
8 700 503 084 0
8 700 306 110 0
8 708 500 304 0
8 707 207 272 0
8 704 404 060 0
8 707 206 446 0
Interior components and diagram parts list | 33
Description
Heat exchanger washer
Threaded bushing
Connector
Water Filter
Outlet Hose
Water connection clip
Plunger
Volumetric water governor
ECO/temperature limiter
Temperature limiter/ECO
Venturi
Hot water pipe
Gas supply pipe
Cover
Clip
Protection shield
Wire form spring
Pilot valve
Wire form spring
Servovalve
Wire form spring
Inlet Hose
Wire form spring (10x)
Protection shield
Reference
8 700 103 658 0
8 700 306 148 0
8 700 306 187 0
8 700 507 059 0
8 700 703 139 0
8 701 201 020 0
8 703 502 039 0
8 705 705 034 0
8 707 206 017 0
8 707 206 435 0
8 708 205 279 0
8 700 705 178 0
8 700 715 351 0
8 705 500 105 0
8 701 300 015 0
8 701 000 397 0
8 704 705 030 0
8 708 501 249 0
8 704 705 025 0
8 708 501 250 0
8 704 705 024 0
8 700 703 114 0
8 704 705 029 0
8 701 000 414 0
6 720 644 942 (2014/11)