Combustion Air Supply; Special Note - Weil-McLain GOLD GV 3 Series Manual

Special note

2
GOLD GV Water boiler — Series 3

Combustion air supply

Refer to GV Series 3 Boiler Manual
All boilers experience some condensation in section assembly during start-up. Unlike most
conventional boilers, condensation is minimized in the
system, maintaining boiler return water temperature above 130
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
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
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
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 clean-
ing solvents found in household laundry rooms
Adhesives used to fasten building products and
other similar products
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
for sizing free area of combustion/ventilation air openings.
GV Series 3 Boiler
0
F, during steady state operation.
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
by a built-in mixing
Table 1
below, which will
Table 1
Part Number 550-110-271/0699