GV90+
Prevent combustion air contamination —
Air contamination | Combustion air contamination: |
Common household and hobby products often contain fluorine or chlorine compounds. When these chemicals pass through the boiler, they can form strong acids in the vent system or boiler. The acid can eat through the vent or boiler wall, causing serious damage and presenting a possible threat of flue gas spillage into the building.
Please read the information below. If the contaminating chemicals will be present, have your installer pipe the boiler air from outside per the Boiler manual.
If the boiler is installed in any area likely to cause contamination, or if products which would contaminate the air cannot be removed, you must pipe combustion air to the boiler air in- take. Contaminated combustion air will damage the boiler and vent system, re- sulting in possible severe personal injury, death or substantial property damage.
Do not operate a GV90+ boiler in a laundry room or pool facility, for
example, without using ducted outside air. These areas will always contain con- taminants.
Ensure that the combustion air will not contain any of the contaminants in Figure 1.
Combustion air supply openings or intake terminations must NOT be near a swimming pool, for example.
Avoid areas subject to exhaust fumes from laundry facilities. These areas will always contain contaminants.
Figure 1 Corrosive contaminants and sources
Products to avoid
Spray cans containing chloro/fluorocarbons
Permanent wave solutions
Chlorinated waxes/cleaners
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
Adhesives used to fasten building products and other similar products
Excessive dust and dirt
Areas likely to have contaminants
Dry cleaning/laundry areas and establishments
Swimming pools
Metal fabrication plants
Beauty shops
Refrigeration repair shops
Photo processing plants
Auto body shops
Plastic manufacturing plants
Furniture refinishing areas and establishments
New building construction
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