A.O. Smith TWI 35-200, Installation, User And Service Manual

Page: 39 / 92

Fig. Installation diagram
IMD-1352 R0
T
13
B
12
A
4 5
C
1
15
16
4
5
6
4
14 14 14
11
3
D
9
1. Pressure reducing
valve
(mandatory if the mains
water pressure is too
high)
3. T&P valve (optional)
4. Stop valve
(recommended)
5. Non-return valve
6. Circulation pump
(optional)
9. Drain valve
10. Manual gas valve
11. Service stop valve
12. Temperature gauge
(optional)
13. Condensate drain
14. Draw-off point
15. Expansion valve
16. Expansion vessel
A. Cold water supply
B. Hot water outlet
C. Circulation pipe
D. Gas supply
Note
Use this installation diagram when you:
- install the water connections (see 8.4)
- install the condensate drain (see 8.5)
- install the gas connection
- fill the water heater (see 8.9.1)
- drain the water heater (see 8.10.2)
n
8.4 Water connections
8.4.1 Cold water connection
Install the cold water connection:
1.
Install an approved stop valve (4), as required by the applicable regulations (on page
4).
2. Install an approved pressure reducing valve (1) to prevent that the pressure in the
cold water supply pipe exceeds the maximum working pressure of the tank, 8 bar.
Refer to the Technical details.
3. Install a non-return valve (5).
4. Install an expansion valve (15).
5. Connect the overflow connection of the expansion valve, to an open waste water
pipe.
6. Install an expansion vessel (16).
0313279_TWISTER II_UKUK_
V1.1, 18-02-2019
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