A.O. Smith BFC - 28 - Manual (Page 50)

Starting up and shutting down
50 Instruction Manual BFC
7
gis
• Shut the appliance down for a longer period .
7.3.1 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.
With the frost protection you can prevent water freezing in the appliance.
Activate the frost protection as follows:
1. Press button B to select the main menu.
2. Using H and L position the cursor (») beside OFF.
Confirm with E.
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 will heat the
water to 20°C (T
set
) before dropping back to OFF mode.
n Remark
These values of 5°C and 20°C cannot be adjusted.
7.3.2 Disconnect the appliance from the mains
The appliance should only be disconnected from mains power in the correct
way. The correct procedure is as follows:
1. Activate the MENU with B.
2. Use H and L to position the cursor beside OFF. See
Figure 7.6 .
3. Confirm OFF with E.
4. Wait until the fan has stopped. The
S
icon is then dimmed.
c Note
Failure to wait until the fan stops can cause damage to the appliance.
5. Turn the appliance OFF (position 0) using the ON/OFF switch on the
control panel. See Figure 7.7 .
6. Disconnect the appliance by putting the mains switch between the appliance
and the mains power supply to position 0.
7.3.3 Shut the appliance down for a longer period
Drain the appliance, if you are shutting it down for a longer period of time.
Proceed as follows:
1. Disconnect the appliance from the mains as described in paragraph
7.3.2 .
2. Shut off the gas supply.
3. Close the stop valve in the hot water pipe.
4. Open the drain valve.
5. Bleed the appliance (or installation) so that it drains completely empty.
OFF
13:45 Thursday 6ÉC
FROST PROTECTION
ACTIVATED
Figure 7.5 Frost protection
MENU
»OFF
^ ON
È WEEK PROGRAM
Figure 7.6 Main menu
Figure 7.7 ThermoControl
0 I