26
SYSTEM MANAGER
ENGLISH
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 the central heating mode button (5) to select
"Protection" mode (
b
).
Power to the boiler remains switched on, and the dis-
play remains active. The fuel feed also remains open so
that the
frost protection
function can protect the boiler
against freezing.
Boiler frost protection: if boiler temperature falls below
5°C, the burner starts up at full power until boiler temper-
ature reaches 40°C .
Plant frost protection: This function is only active if an
outside temperature sensor is connected.
If outside temperature drops below -4°C the pumps are
switched on. If outside temperature is between -5° and
1.5°C, the pumps are switched on for 10 minutes at inter-
vals 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 mains 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 .
5
Boiler temperature
ON
OFF
