Filling Unvented Installations - A.O. Smith GWV - 120 Installation And Service Manual

5
Vented
17
H
A
19
E
4
18
4
Legend
Only applicable numbers are mentioned.
1. pressure-reducing valve (mandatory if the mains
water pressure exceeds 8 bar)
2. inlet combination (mandatory)
3. expansion valve
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 (recommended)
5.2 Filling unvented
installations
44
Filling
12
14 14
11
B
C
3
4
6
5
4
11
11
9
14.
15.
16.
18.
19.
23.
A.
B.
C.
D.
E.
H.
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 valves (11) between the storage tank and the appliance.
5. Open the stop valve (4) on the cold water side (A) so that cold water flows
into the appliance.
6. Completely fill the appliance. When a full water jet flows from the nearest
draw-off point, the appliance is full.
7. Bleed the entire installation of air, for example by opening all draw-off points.
8. Bleed the pump.
14
D
10
23
hot water draw-off points
expansion valve (mandatory)
expansion vessel (mandatory)
water tank
float valve
P-valve
cold water supply
hot water supply
circulation pipe
gas supply
overflow pipe
overflow safety
Instruction manual GWV
gis
9
IMD-0487 R2