Bosch 520-HN-N Specifications download pdf (Page 26)

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Interior components and diagram parts list

8.3 Parts list

Item Description Reference

1 Front cover 8 705 431 242 0

2 Shield 8 705 506 814 0

3 Control cover 8 705 506 813 0

4 Temp. control knob 8 702 000 305 0

5 Water flow selector handle 8 702 000 304 0

6 Draft Diverter 8 705 505 442 0

7 Exhaust pipe union Ø128 8 705 504 046 0

8 Angle bracket 8 708 003 192 0

9 Cover retaining clip (x10) 8 700 506 200 0

10 Heat exchanger 8 705 406 332 0

11 Hydro generator 8 707 406 071 0

12 Cold water pipe 8 700 715 109 0

13 Main burner LP 8 708 120 615 0

13 Main burner NG 8 708 120 616 0

14 Connector 8 705 209 056 0

15 Pilot burner 8 708 105 655 0

16 Sparking plug 8 708 107 013 0

17 Ignitor bracket (x10) 8 701 300 010 0

18 Pilot screen 8 700 507 066 0

19 Gas valve LP 8 707 011 962 0

19 Gas valve NG 8 707 011 976 0

20 Pilot injector LP 8 708 200 321 0

20 Pilot injector NG 8 708 200 322 0

21 Microswitch 8 707 200 020 0

22 Gas pressure regulator LP 8 707 406 083 0

22 Gas pressure regulator NG 8 707 406 084 0

23 Water valve 8 707 006 344 0

24 Watervalve pushrod (10x) 8 703 204 051 0

25 Diaphragm (L) 8 700 503 084 0

26 Inlet water connection 8 700 306 110 0

27 Selector screw 8 708 500 304 0

28 Ignition unit 8 707 207 142 0

29 Cable 8 704 401 340 0

30 Flue gas safety device 8 707 206 446 0

31 Heat exchanger washer 8 700 103 658 0

32 Threaded bushing 8 700 306 148 0

33 Connector 8 700 306 187 0

34 Water filter 8 700 507 059 0

35 Outlet Hose 8 700 703 139 0

36 Water connection clip 8 701 201 020 0

37 Plunger 8 703 502 039 0

38 Volumetric water governor 8 705 705 034 0

39 ECO 8 707 206 017 0

40 Temperature limiter 8 707 206 132 0

41 Venturi 8 708 205 279 0

42 Hot water pipe 8 700 715 178 0

43 Gas supply pipe 8 700 715 351 0

44 Cover 8 705 500 105 0

Table 5

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