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176 720 607 026
Fig. 14 - Diagram of 425 HN
1. Heat exchanger
2. Pilot assembly
3. Burner manifold gas
pressure test nipple
4. Main gas burner
5. Pilot gas tubing
6. LED failure indicator
7. on/off switch
8. LED operation indicator
9. Water valve
10. Temperature adjustment selector
11. Gas inlet gas pressure test nipple
12. Hose
3
1
4
10
11
2
9
8
6
7
5
12
6 720 606 804-10.1AL