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5603 884 - 04
Vitoflex 300-UF Service & Maintenance
Safety
IMPORTANT
WARNING
Incorrect ambient conditions can lead to damage to
the heating system and put safe operation at risk.
Mechanical room conditions
Prevent the air from becoming contaminated by
homogenate hydrocarbons (e.g. as contained in paints
solvents or cleaning fluids) and excessive dust (e.g.
through grinding or polishing work). Combustion air for
the heating process, and ventilation of the boiler room
must be free of corrosive contaminants. To that end, any
boiler must be installed in an area that has no chemical
exposure. The list to the right indicates the main,
currently known sources.
Avoid continuously high levels of humidity (e.g. through
frequent drying of laundry).
Never close existing ventilation openings.
Components which are not tested with the heating
system may damage the heating system or affect its
functions. Installation or replacement may only be
carried out by a qualified heating contractor.
Sources of combustion and ventilation air contaminants
Areas likely to contain contaminants:
- New building construction
- Swimming
pools
- Remodeling areas, hobby rooms
- Garages with workshops
- Furniture refinishing areas
- Dry cleaning/laundry areas and establishments
- Auto body shops
- Refrigeration repair shops
- Metal fabrication plants
- Plastic manufacturing plants
- Photo processing plants
- Beauty
salons
Products containing contaminants:
- Chlorine-type bleaches, detergents and cleaning
solvents found in household laundry rooms
- Paint and varnish removers
- Hydrochloric acid, muriatic acid
- Chlorine-based swimming pool chemicals
- Spray cans containing chlorofluorocarbons
- Chlorinated waxes and cleaners
- Cements and glues
- Refrigerant
leaks
- Calcium chloride used for thawing
- Sodium chloride used for water softening salt
- Permanent wave solutions
- Adhesives used to fasten building products and
other similar item
- Antistatic fabric softeners used in clothes dryers
Mechanical Room
IMPORTANT
Always follow the most up-to-date local, municipal and
building regulations and codes.
No combustible materials may be stored in the heating
room. The heating boiler may only be set up on a fire-
resistant and temperature-resistant floor. No temperature-
sensitive pipes or lines may be installed in the floor
beneath the heating boiler.
A sufficient supply of fresh air must be provided directly
from outdoors into the heating room. Induced ventilation
is necessary for heating rooms that are confined or
enclosed. See “Installation and Operating Instructions”
for more details.
The temperature in the heating room must not exceed
104°F (40°C) while the system is in operation
(in the area approx. 3 ft. (1 m) away from the boiler).
The temperature in the heating room must not fall below
50°F (10°C) while the system is in operation (measured
at the inner side of exterior walls).
