Draining - A.O. Smith BFC-28 Installation, User And Service Manual

gis
6
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
Instruction manual BFC

Draining

Installation diagram
UNVENTED
11
12 T
B
10
D
VENTED
12
T
B
D
10
14 14 14
C
3
4
6
5
4
16
15
9
13
H
19
17 E
14 14 14
18
11
C
4
3
4 5 6 4
9
13
5
1 4
A
A
4
C
IMD-0779 R0
49