Cleaning; Boiler - Viessmann Vitoflex 300-RF series Service And Maintenance Instructions

Vitoflex 300-RF Service & Maintenance

Cleaning

Boiler

The heat exchanger, flue gas pipe, and chimney must be
cleaned regularly to remove accumulated creosote and ash.
Ensure that the heat exchanger, flue gas pipe, and chimney
are cleaned at the end of the heating season to minimize
corrosion during the summer months. The appliance, flue
gas pipe, and chimney must be in good condition.
With pneumatic cleaning system, after
approx. 600 operating hours; without
pneumatic cleaning system, after approx.
300 operating hours:
Open the boiler door and clean all heat
exchanger with a wire cleaning brush.
Use the ash rake to carefully draw the fly
ash lying in the rotary combustion chamber
to the front.
IMPORTANT
With pneumatic cleaning system, disconnect
the compressed air line before opening the
boiler door – danger of injury!
After approx. 300 operating hours:
Open the lid across the in-feed auger
and clear the slots in the grate.
CAUTION
RISK OF INJURY: Shut the system
off before starting any cleaning. Be
absolutely sure to wear protective
gloves, protective eyewear if required
and use the cleaning tools that come
with the system (danger of blow-ups,
burns and getting crushed)!
Check the level of the ash bin regularly and
empty the bin before it is completely full.
IMPORTANT
NEVER operate the boiler without the ash bin.
Regular cleaning and maintenance of the boiler system is
of the utmost importance to assure trouble-free operation
and to obtain the largest possible output at the best
efficiency.
The cleaning intervals listed here are for wood chip fuel
material with clinging bark with 0.8% ash content. The
cleaning intervals may vary, depending on the fuel, the
amount of fine matter and the operating conditions.
After approx. 1000 operating hours:
Disconnect the power from the flue gas
exhaust blower, loosen the butterfly nuts,
pull out the motor with impeller and clean
the assembly with a broom or wire brush.
DANGER OF INJURY – be absolutely sure
to turn OFF the main switch.
After approx. 300 operating hours:
Loosen and clean the light barriers
and the inspection windows on the
combustion chamber.
Remove dust and ash in the openings.
Maintenance
CAUTION
After approx. 1000 operating hours:
Clean the recirculated flue gas line.
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