A.O. Smith ADMR-115, Installation, User And Service Manual

Page: 47 / 98

Instruction manual ADMR 47
gis
6 Draining
6.1 Draining unvented
installations
Installation diagram
Some service activities require the appliance to be drained. The procedure is as
follows:
1. Activate the
MENU
with .
2. Position the cursor in front of
OFF
.
3. Confirm
OFF
with .
4. Switch the appliance OFF (position 0) using the ON/OFF switch on the
control panel.
5. Isolate the water heater from the power supply by putting the isolator
between the appliance and the mains power supply to position 0.
6. Shut off the gas supply (10).
7. Close the stop valve (11) in the hot water pipe.
8. Close the supply valve (4) in the cold water supply (A).
9. Open the drain valve (9).
10. Bleed the appliance (or installation) so that it drains completely.
Legend
Only applicable numbers are
mentioned.
1. pressure reducing valve
(mandatory)
3. T&P valve (mandatory)
4. stop valve (recommended)
5. non-return valve (mandatory)
6. circulation pump (optional)
7. top to bottom circulation pump
(optional)
9. drain valve
10. manual gas valve (mandatory)
11. service stop valve (mandatory)
12. temperature gauge
(recommended)
14. hot water draw-off points
15. expansion valve (mandatory)
16. expansion vessel (mandatory)
A. cold water supply
B. hot water supply
C. circulation pipe
D. gas supply
C
4
5
6
4
14 14 14
10
D
B
A
4 5 1
15
16
4
5
7
4
9
11
12
3
IMD-0142 R2
MENU
»OFF
^ ON
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