A.O. Smith GWV - 120, Инструкция по установке и обслуживанию

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Installation
26 Instruction manual GWV
3
is
3.6 Water connections,
Vented Warning
The installation should be carried out by an authorised installation engineer,
in compliance with general and local regulations (1.3 "Regulations") .
3.6.1 Cold water side
See (A) in the installation diagram (3.5 "Installation diagram") .
1. Fit an approved stop valve (4) on the cold water side between the cold water
head tank (18) and the appliance, as required by
regulations
(1.3 "Regulations") .
3.6.2 Hot water side
See (B) in the installation diagram (3.5 "Installation diagram") .
Note
Insulating long hot water pipes prevents unnecessary energy loss.
1. Fit the T&P valve (3).
2. Optional: fit a temperature gauge (12) so you can check the temperature of
the tap water.
3. Fit a stop valve (11) in the hot water outlet pipe for servicing.
4. If a circulation pipe is required, continue by installing the circulation
pipe (3.6.3 "Circulation pipe") .
3.6.3 Circulation pipe
See (C) in the installation diagram (3.5 "Installation diagram") .
If an immediate flow of hot water is required at draw-off points, a circulation
pump can be installed. This improves comfort and reduces water wastage.
1. Fit a circulation pump (6) of the correct capacity for the length and resistance
of the circulation system.
2. Fit a non-return valve (5) behind the circulation pump to guarantee the
direction of circulation.
3. Fit two stop valves for service purposes (4).
4. Connect the circulation pipe up to a connection of the storage tank.
3.6.4 System pump
The pump revs can be set using an adjuster unit. This setting depends on the
length of the pipes X between the storage tank and the appliance.
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)
14. hot water draw-off points
15. expansion valve (mandatory)
16. expansion vessel (mandatory)
18. water tank
19. float valve
23. P-valve
A. cold water supply
B. hot water supply
C. circulation pipe
D. gas supply
E. overflow pipe
H. overflow safety