A.O. Smith 30 - Manual (Page 65)

Instruction manual SGS 65
gis
10 Shutting down
10.1 Introduction
This chapter describes:
•
Shut the appliance down for a brief period ("OFF
mode")
;
• Electrically isolating the appliance ;
• Shutting the appliance down for a long period .
10.2 Shut the appliance down for a brief
period ("OFF mode")
To shut the appliance down for a brief period, you must
activate the frost protection.
You can use the frost protection to prevent water
freezing in the appliance.
Activate the frost protection as follows:
1. Press the
button to select the main menu.
2. Use and to position the cursor in front of OFF.
Confirm with .
The frost protection cuts in if the water temperature
drops below 5°C. The text FROST will then appear on
line one of the display. The appliance heats the water
to 20°C (T
set
) and drops back to the OFF mode.
Note
These values of 5°C and 20°C cannot be adjusted.
10.3 Electrically isolating the appliance
The appliance should only be isolated from mains
power in the correct way. The correct procedure is as
follows:
1. Activate the MENU with
.
2. Position the cursor in front of OFF.
3. Confirm OFF with
.
Caution
Failure to wait until the fan stops purging can
cause damage to the appliance.
4. Wait until the fan has stopped. The symbol is
then dimmed.
5. Switch the appliance OFF (position 0) using the
ON/OFF switch on the control panel.
6. Isolate the appliance from the power supply by
setting the isolator between the appliance and the
mains power supply to position 0.
10.4 Shutting the appliance down for a long
period
Drain the appliance if you are shutting it down for a
long period. Proceed as follows:
1. Isolate the appliance from the power
supply (10.3 "Electrically isolating the appliance") .
2. Shut off the gas supply.
3. Close the stop valve in the hot water pipe.
4. Close the supply valve of the protected cold supply
set-up.
5. Open the drain valve
6. Bleed the appliance (or installation) so that it
drains completely.
OFF
13:45 Thursday 6ÉC
FROST PROTECTION
ACTIVATED
MENU
»OFF
^ ON
È WEEK PROGRAM