Interior components diagram and parts list

8.3Parts list

Item

Description

Reference

1

Front cover

8 705 421 837

 

 

 

2

Shield

8 705 506 661

 

 

 

3

Heat exchanger

8 705 406 285

 

 

 

4

Heat exchanger top gasket

8 704 701 052

 

 

 

5

Clip

8 716 102 607

 

 

 

6

Heat exchanger bottom gasket

8 704 701 054

 

 

 

7

O-ring

8 700 205 147

 

 

 

8

Temperature sensor

8 700 400 015

 

 

 

9

Washer 1/2"

8 710 103 045

 

 

 

10

Wireform spring

8 714 606 002

 

 

 

11

Air inlet duct

8 705 700 097

 

 

 

12

Water filter

8 700 507 001

 

 

 

13

O-ring

8 700 205 134

 

 

 

14

Water valve with engine

8 708 505 016

 

 

 

15

Main burner

8 708 120 515

 

 

 

16

Fan / Burner gasket

8 704 701 050

 

 

 

17

Set of electrodes

8 708 107 020

 

 

 

18

Exhaust Fan

8 707 204 039

 

 

 

19

Gas / Air Mixer

8 705 700 115

 

 

 

20

Mixer / Fan gasket

8 704 701 059

 

 

 

21

Gas valve washer

8 704 701 062

 

 

 

22

Gas valve

8 707 021 019

 

 

 

23

Gas valve washer

8 700 103 014

 

 

 

24

Remote control

8 707 207 153

 

 

 

25

Control unit

8 707 207 133

 

 

 

26

Ignition cable

8 704 401 220

 

 

 

27

Cables / 24V

8 704 401 214

 

 

 

28

Cables

8 704 401 239

 

 

 

29

Power supply cord

8 704 401 221

 

 

 

30

Overheat cutoff fuse

8 700 400 019

 

 

 

31

Flue gas exhaust accessory

8 705 504 137

 

 

 

32

Combustion air inlet accessory

8 705 504 116

 

 

 

33

Flue gas collector

8 705 700 100

 

 

 

34

Flue gas collector collar

8 705 700 114

 

 

 

35

Cold water pipe

8 700 715 156

 

 

 

36

Hot water pipe

8 700 715 155

 

 

 

37

Air inlet screen

8 700 507 069

 

 

 

38

Crossover tube

8 700 715 247

 

 

 

39

Overheat sensor (ECO)

8 707 206 204

 

 

 

Table 6

6 720 607 057

31

Page 31
Image 31
Bosch Appliances 250SX NG, 250SX LP manual Parts list, Description Reference