GOLD GV Series 3 & 4 —
Combustion air supply
Special note
Refer to GV Boiler Manual for sizing free area of combustion/ventilation air openings.
All boilers experience some condensation in section assembly during
Flue gas condensate is slightly acidic. In most cases pH level is not harmful to vents or drains. When combustion air is contaminated by vapors from products and areas, listed in Table 1 below, condensate acidic levels increase. Higher acidic levels attack many materials, including stainless steel commonly used in high efficiency systems.
You may choose to use outside combustion air for any of the following reasons:
•Installation is in an area containing contaminants listed in Table 1 below, which will induce acidic contamination.
•You want to reduce infiltration into your home through openings around windows and doors.
Table 1 Corrosive contaminants
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
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
Remodeling areas
Garages with workshops
To prevent the potential of severe personal injury or death, check for areas and products listed above before installing boiler. If found:
•remove products permanently — OR —
•provide outside combustion air
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