Draining; Draining Unvented Installations - A.O. Smith ADMR - 40 Installation, User And Service Manual

gis
6
6.1 Draining unvented
installations
Legend
Only applicable numbers are
mentioned.
1. pressure reducing valve
(mandatory)
3. T&P valve
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
Instruction manual ADMR

Draining

Installation diagram
14 14
4
6
5
4
C
9
D
10
Some service activities require the appliance to be drained. The procedure is as
follows:
1. Activate the MENU with
MENU
»OFF
^ ON
È WEEK PROGRAM
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.
14
12
11
3
4
7
16
5
4
5 1
15
.
.
B
4
A
IMD-0142 R2
45