A.O. Smith BFM - 100, BFM - 120 manual Working principle of the appliance

2

22

47

18

48

9

11

10

24

49

12

Working principle of the appliance gis

Cut-away view of the appliance

		22
		47
18
2	5
		42
	39	43
38		44
41
		40
		46
		21
14		51
45	52
16

15

8
50
	36
			16
Legend		15. drain valve	IMD-0240 R2
			42. high-limit thermostat
Only applicable numbers are		16. gas control	43. safety thermostat
mentioned.		18. fan	44. frost thermostat
2.	hot water outlet
		21. flame probe	45. control thermostat sensor
5.	pressure switch
		22. chimney pipe	46. frost thermostat sensor
8.	combustion chamber
		24. insulation layer	47. air supply
9.	anode
		36. bar burners/burner tray	49. air restrictor
10. tank
		38. safety thermostat sensor	50 combustion chamber with
11. heat exchanger
		39. high-limit thermostat sensor	air distribution plate
12. inspection and cleaning opening		40. burner control	51. pilot burner
14. cold water inlet		41. control thermostat	52. spark igniter

12 Instruction manual BFM