Shutting Down The Heating System - Viessmann VITOLIGNO 300-C Installation And Service Instructions Manual

Shutting down the heating system

Danger
Contact with live or hot components can result in
serious injuries.
Before starting cleaning work, disconnect from
the mains voltage, e.g. at the fuse or the mains
isolator. Then wait until the boiler has cooled
down.
Danger
The appliance mains isolator on the boiler is
used to isolate the control unit from the power
supply. It does not turn off the mains power sup-
ply.
There are live components inside the control
unit enclosure.
Overview of maintenance and cleaning work in the boiler
Danger
Hot surfaces can cause burns.
■ Before maintenance and service work, switch
OFF the appliance and let it cool down.
Never touch hot surfaces on the boiler, burner,
■
flue system or pipework.
Danger
Breathing in ash or pellet dust is detrimental to
health.
Wear a dust mask to protect your respiratory
tract.
Commissioning, inspection, maintenance
1. Switch off the boiler by pressing "START/STOP"
on the control unit.
2. Wait until the run-on time has passed and let the
boiler cool down.
3. Switch off the mains isolator and safeguard against
restarting.
Danger
Risk of crushing or entanglement by rotating or
moving parts.
Do not reach in through the maintenance cov-
ers.
Do not remove any protective covers.
Note
Observe the country-specific regulations on the dis-
posal of materials, waste and system components.
Before restarting the heating system, all opened cov-
ers and flaps on the boiler must be closed again.
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