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Fig. 15
INTERIOR COMPONENTS DIAGRAM
AND PARTS LIST 425 HN
1 Cover 8 705 421 752
2 Temperature adjustment knob 8 702 000 111
3 Temperature adjustment collar 8 700 403 008
4 Draft diverter 8 705 505 354
5 Heat exchanger 8 705 406 235
7 Main burner 8 708 120 298 NG
7 Main burner 8 708 120 296 LP
8 Burner assembly washer 8 710 103 060
9 Throttle disc 8 700 100 174 LP
10 Pilot burner 8 708 105 491 LP
10 Pilot burner 8 718 105 051 NG
11 Pilot electrode 8 708 107 006
12 Pilot orifice 8 708 200 069 NG
12 Pilot orifice 8 708 200 312 LP
13 Pilot tube 8 700 707 370
14 Washer pilot tube 8 700 103 173
15 Gas valve 8 707 011 917 NG
15 Gas valve 8 707 011 945 LP
16 Diaphragm switch 8 708 504 021 NG
16 Diaphragm switch 8 708 504 049 LP
17 Pilot electrovalve 8 708 501 249
18 Burner electrovalve 8 708 501 250
19 O-ring 8 700 205 023
20 Hydro-generator 8 707 406 043
21 Cold water pipe 8 700 705 947
22 Outlet flex hose 8 700 703 139
23 Washer 8 700 103 658
24 Water valve 8 707 002 649
25 Water valve cover 8 705 500 101
26 Diaphragm 8 700 503 053
27 Water inlet filter 8 700 507 001
28 Water valve selector screw 8 708 500 289
29 Volumetric water governor 8 705 705 009
30 Venturi 8 708 205 279
31 Electronic control box 8 707 207 085
32 Flame sensor cable 8 704 404 040
33 Electrode cable 8 704 404 039
34 Flue Gas Sensor 8 707 206 345
35 Set of cables 8 704 404 038
36
Pushrod
8 700 306 114
37 O-ring 8 700 205 120
38 O-ring 8 700 205 119
39 Water connection gasket 8 710 103 043
40 Water elbow fitting 8 700 703 114
41 Overheat sensor (ECO) 8 707 206 040
42 Connecting pipe hot 8 700 715 178
43 Washer 8 710 103 045
44 Flame sensor 8 708 107 007
45 Water valve set screw 8 703 401 051