Filling The Appliance - A.O. Smith SGE Installation And Operation Manual

5
Legend
Only applicable numbers are
mentioned.
1. pressure-reducing valve
(mandatory if the mains water
pressure exceeds 8 bar)
3. T&P valve (mandatory)
4. stop valve (recommended in pipe C
and mandatory in pipe A)
5. non-return valve (mandatory)
6. circulation pump (optional)
9. drain valve (mandatory)
10. manual gas valve (mandatory)
20. pressure valve (mandatory)
26. air bleed (mandatory)
5.1

Filling the appliance

5.1.1
5.1.2
50
Filling
11. service stop valve (recommended)
12. temperature gauge
(recommended)
13. condensation drainage
(mandatory)
14. hot water draw-off points
15. expansion valve (mandatory)
16. expansion vessel (mandatory)
17. 3-way aeration valve
(recommended)
18. water tank
19. float valve
23. pressure valve (mandatory)
37. combined Q/T sensor (optional)
Filling unvented installations
To fill the appliance, proceed as follows:
1. Open the stop valve (11) in the hot water pipe and, if present, the stop valves
(4) for the circulation pump (6).
2. Close the drain valve (9).
3. Open the nearest hot water draw-off point (14).
4. Open the stop valve (4) on the cold water side (A) so that cold water flows
into the appliance.
5. Completely fill the appliance. When a full water jet flows from the nearest
draw-off point, the appliance is full.
6. Bleed the entire installation of air, for example by opening all draw-off points.
7. The appliance is now under water supply pressure. There should be no
water coming out of the expansion valve (15), nor the T&P valve (3). If this
does happen, the cause might be:
- The water supply pressure is greater than the specified 8 bar.
Rectify this by fitting a pressure reducing valve (1).
- The expansion valve in the protected cold supply setup is defective or
incorrectly fitted.
Filling vented installations
To fill the appliance, proceed as follows:
1. Open the stop valve (11) in the hot water pipe and, if present, the stop valves
(4) for the circulation pump (6).
2. Close the drain valve (9).
3. Open the nearest hot water draw-off point (14).
4. Open the stop valve (4) on the cold water side (A) so that cold water flows
into the appliance.
5. Completely fill the appliance. When a full water jet flows from the nearest
draw-off point, the appliance is full.
6. Bleed the entire installation of air, for example by opening all draw-off points.
7. The appliance is now under water supply pressure. There should be no
water coming out of the T&P valve (3). If this does happen, the T&P valve
might be defective or incorrectly fitted.
gis
38. solar heating system pump station
(modulating - mandatory)
A. cold water supply
B. hot water supply
C. circulation pipe
D. gas supply
E. overflow pipe
F. heat exchanger supply
G. heat exchanger return
H. overflow safety
S1.collector sensor (mandatory)
S2.tank sensor (mandatory)
S4.heat exchanger discharge sensor
(optional)
Instruction manual SGE