Prevent Combustion Air Contamination - Weil-McLain SlimFit 550 User's Information Manual

Commercial condensing gas-fired water boilers
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SlimFit
-
gas
fired water boiler

Prevent combustion air contamination

If the boiler combustion air inlet is located in any area likely to cause contamination, or if products which
would contaminate the air cannot be removed, you must have the combustion air and vent re-piped and
terminated to another location. Contaminated combustion air will damage the boiler, resulting in possible
severe personal injury, death or substantial property damage.
Do not operate an SlimFit boiler if its combustion air inlet is located in a laundry room or pool facility,
for example. These areas will always contain hazardous contaminants.
Pool and laundry products and common household and hobby products often contain fluorine or chlorine
compounds. When these chemicals pass through the boiler, they can form strong acids. The acid can eat
through the boiler wall, causing serious damage and presenting a possible threat of flue gas spillage or
boiler water leakage into the building.
Please read the information listed below. If contaminating chemicals will be present near the location of
the boiler combustion air inlet, have your installer pipe the boiler combustion air and vent to another
location, per the Boiler manual.
Products to avoid
Spray cans containing chloro/fluorocarbons
Permanent wave solutions
Chlorinated waxes/cleaners
Chlorine-based swimming pool chemicals
Calcium chloride used for thawing
Sodium chloride used for water softening
Refrigerant leaks
Paint or varnish removers
Hydrochloric acid/muriatic acid
Cements and glues
Antistatic fabric softeners used in clothes dryers
Chlorine-type bleaches, detergents, and cleaning
solvents found in household laundry rooms
Adhesives used to fasten building products and
other similar products
8
— User's Information Manual
Areas likely to have contaminants
Dry cleaning/laundry areas and establishments
Swimming pools
Metal fabrication plants
Beauty salons
Refrigeration repair shops
Photo processing plants
Auto body shops
Plastic manufacturing plants
Furniture refinishing areas and establishments
New building construction
Remodeling areas
Garages with workshops
Part number 550-100-088/0814

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