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Part Number 550-110-268/0699
2
GOLD GV Water boiler — Series 3
Combustion air supply
Refer to GV Series 3 Boiler Manual for sizing free area of combustion/ventilation air openings.
All boilers experience some condensation in section assembly during start-up. Unlike most
conventional boilers, condensation is minimized in the
GV Series 3 Boiler by a built-in mixing
system, maintaining boiler return water temperature above 130
0
F, during steady state operation.
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.
Special note
To prevent 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
Table 1 Corrosive contaminants
Products to avoid Areas likely to have contaminants
Spray cans containing chloro/fluorocarbons Dry cleaning/laundry areas and establishments
Permanent wave solutions Swimming pools
Chlorinated waxes/cleaners Metal fabrication plants
Chlorine-based swimming pool chemicals Beauty shops
Calcium chloride used for thawing Refrigeration repair shops
Sodium chloride used for water softening Photo processing plants
Refrigerant leaks Auto body shops
Paint or varnish removers Plastic manufacturing plants
Hydrochloric acid/muriatic acid Furniture refinishing areas and establishments
Cements and glues New building construction
Antistatic fabric softeners used in clothes
dryers
Remodeling areas
Chlorine-type bleaches, detergents, and clean-
ing solvents found in household laundry rooms
Garages with workshops
Adhesives used to fasten building products and
other similar products