TECHNICAL ASSISTANCE SERVICE
42
TEMPORARY SHUTDOWN
PREPARING FOR EXTENDED PERIODS OF DISUSE
If you are going to be away for a short period of time like
a weekend or a short holiday, etc. proceed as follows.
- Press and hold the
M
key until the bar (1) appears
under "Stand-by" mode".
Provided power to the boiler remains switched on, as
shown by the green LED, and the fuel supply remains
open, the boiler remains protected by the
frost protec-
tion
function.
Boiler frost protection: If boiler temperature falls below
5°C, the burner ignites and runs at full power until tem-
perature reaches 10°C.
CH frost protection: This function is only active if an
outdoor temperature sensor is connected. If outside
temperature drops below -5°C the pumps are switched
on. If outside temperature is between -4° and 1.5°C, the
pumps are switched on for 10 minutes at intervals of 6
hours. If outside temperature is above 1.5°C the pumps
are switched off.
If the boiler is not going to be used for an extended peri-
od of time, proceed as follows to prepare it for shut-down.
- Turn the control panel power switch OFF and make sure
that the display goes out
- Turn the system's main power switch OFF
- Close the fuel shut off cock and the central heating and
DHW circuit shut off cocks
b
Under these conditions the system is not pro-
tected against frost. Drain the central heating cir-
cuit and domestic hot water circuit if there is any
risk of freezing.
