A.O. Smith DRE 52, Installation, User And Service Manual

Page: 39 / 176

8.3 Installation diagram
Fig. Installation diagram
T
B
12
A
4 5
C
1
15
16
4
5
6
4
14 14 14
11
9
3
1. Pressure reducing valve
(mandatory if the mains water
pressure is too high)
3. T&P valve (mandatory)
4. Stop valve (recommended)
5. Non-return valve
6. Circulation pump (optional)
9. Drain valve
11. Service stop valve
12. Temperature gauge (optional)
14. Draw-off point
15. Expansion valve
16. Expansion vessel
A. Cold water supply
B. Hot water outlet
C. Circulation pipe
Note
Use this installation diagram when you:
- install the water connections (see 8.4)
- fill the water heater (see 8.6.1)
- drain the water heater
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8.4 Water connections
8.4.1 Cold water connection
Caution
When installing the heater, you need an expansion valve. The expansion valve and
associated fittings are not included in the package. The expansion valve must be suitable
for a water pressure level of up to 800 kPa. Install the expansion vessel and expansion
valve as close as possible to the water heater.
Warning
Never install a stop valve or a non-return valve between the expansion vessel/expansion
valve and the water heater.
Warning
The heater is intended to be connected to the water mains permanently. Do not use a
hose set to connect the heater.
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w
0313851_DRE_NLUKFR, 30-03-2022 37
EN