Clean Combustion Chamber And Heat Exchanger Surfaces - Viessmann VITOCROSSAL 300 Service Instructions Manual

Inspection and Maintenance

Clean Combustion Chamber and Heat Exchanger Surfaces

Combustion
chamber
door bolts
Combustion
chamber door
14
It is recommended to service, clean and inspect the
Observation
heating system at least once a year. Viessmann
port
recommends a service contract with a mechanical firm.
Neglected service on the unit presents a risk, service
and cleaning on a regular basis ensures that the unit will
operate at its peak efficiency with minimal emissions over
many years of operation.
Combustion
chamber
door bolts
Combustion residues coating the heat transfer surfaces
may cause an increased flue gas temperature and
therefore reduced efficiency. The flue gas temperature
increases by 90°F (50°C) with each
accumulation.
1. Ensure main power supply to equipment, the
2. Close all gas valves.
3. Allow boiler to cool if necessary (boiler should be at
4. Use a plastic covering to protect the burner door,
5. Open observation cover plate on the front of the
6. Use a water hose to wash down stainless steel
Do not use any abrasive materials, such as wire brushes,
to clean stainless steel combustion chamber.
Use only soft nylon brushes or clean rags to wipe down
combustion chamber. Remove any loose debris.
7. Direct garden hose into the flue gas collector at the
The cleaning agent used must not contain any solvents
based on hydro-carbons.
Vitocrossal 300, CT3 Series Service
IMPORTANT
IMPORTANT
heating system, and all external controls has been
deactivated. Take precautions in both instances to
avoid accidental activation.
room temperature).
burner, and gas controls from water spray.
stainless steel flue gas collector located on the front
of the boiler. The observation opening is accessed by
first removing the bottom front enclosure panel.
combustion chamber and Inox-Crossal water heating
section (avoid water contact with rope material on
boiler combustion chamber door). Do not allow any
water to enter between pressure vessel and insulated
enclosure.
IMPORTANT
bottom of the boiler, washing any sediment from the
combustion chamber down the condensate drain.
Verify that all "P" traps on all condensate drain
lines are clear, and that water flows freely without
restriction or accumulation.
CAUTION
1 / in. (1 mm)
25