Drain - A.O. Smith TWI - 35-130 Installation, User And Service Manual

6
Legends
Not mentioned numbers are not
applicable.
1. pressure reducing valve
(obligatory)
3. T&P valve (obligatory)
4. stop valve (recommended
in pipe C and obligatory
in pipe A)
5. non-return valve
(obligatory)
6. circulation pump
(optional)
9. drain valve
10. manual gas valve
(obligatory)
11. service valve
12. temperature meter
(optional)
13. condensation drainage
14. draw-off points
15. expansion valve
(obligatory)
16. expansion vessel
(obligatory)
17. three-way aeration valve
(recommended)
18. water tank
19. float valve
A. cold water supply
B. hot water discharge
C. circulation piping
D. gas supply
E. water overflow
H. overflow pipe
Instruction manual TWI 35-130 G/TWI 45-190 G

Drain

Connections diagram
UNVENTED
VENTED
37