A.O. Smith BFC-28 - Filling the Water Heater

Instruction manual BFC 47
gis
5 Filling
Installation diagram
Legend Vented and unvented
Unused numbers are not applicable
1. pressure relief valve
(mandatory if the mains water
pressure is too high)
3. T&P valve (mandatory)
4. stop valve (recommended)
5. non-return valve (mandatory)
6. circulation pump (optional)
9. drain valve
10. manual gas valve
(mandatory)
11. service stop valve
12. temperature gauge (optional)
13. condensation drain
14. draw-off points
15. expansion valve (mandatory)
16. expansion vessel
(mandatory)
17. 3-way aeration valve
(recommended)
18. cold water head tank
19. float switch
A. cold water supply
B. hot water supply
C. circulation pipe
D. gas supply
E. overflow pipe
H. overflow protection
IMD-0779 R0
T
B
A
4
17
E
H
C
C
10
3
D
13
9
4645
14
14
14
11
4
18
12
19
A
4
5
C
1
15
16
13
9
4
5
6
4
14 1414
11
10
D
B
3
T
12
UNVENTED
VENTED