Installation Diagram - A.O. Smith SGS-28 Installation, User And Service Manual

7.3
1. Pressure reducing valve
(mandatory)
2. Inlet combination
(mandatory)
3. T&P valve
4. Stop valve (recommended)
5. Non-return valve
(mandatory)
6. Circulation pump (optional),
pump flow 1500 l/h, e.g.
Grundfos ST 15/11-2
8. Program-controlled pump
(mandatory)
9. Drain valve
56

Installation diagram

Fig. Installation diagram
U N V E N T E D
1 2 T
11
4
1 4
8
D 5
1 4
1 0
4
1 4
3
4
6
5
4
2
9 1 3
C
V E N T E D
1 2 T
11
4
B
1 4
8
5
D
1 4
4
1 0
1 4
3
4
6
5
4
9
1 3
C
10. Manual gas valve
(mandatory)
11. Service stop valve
(recommended)
12. Temperature gauge
(recommended)
13. Condensation drain
(mandatory)
14. Draw-off points
16. Expansion vessel
(mandatory)
17. 3-way aeration valve
(recommended)
18. Cold water head tank
2 6
1 2 T
4 2
11
B
S
3
3
F
S
2
3 7
G
9
2 6
1 2 T
S
1
4 2
B
S
3
3
F
S
2
3 7
S
G Q
T
9
19. Float switch
23. Pressure valve
(mandatory)
26. Air bleed (mandatory)
37. Combined Q/T sensor
(optional)
38. Solar heating system
pump station
(modulating–mandatory)
42. Solar heating system
controller
A. Cold water supply
B. Hot water supply
Installation, Maintenance and Service part
S
1
38
1 6
S
4
Q
1 6
T
5 1 4
A
1 5
1 7
H
1 9
E
4
1 8
38
1 6
4
4
IM D -07 87 R 0
C. Circulation pipe
D. Gas supply
E. Overflow pipe
F. Supply heat exchanger
G. Heat exchanger return
H. Overflow protection
S Collector sensor
1
(mandatory)
S Tank sensor
2
(mandatory)
S Top of tank sensor
3
(mandatory)
S Solar heating system
4.
return sensor (optional)