Operating instructions

5
Part Number 550-142-784/0812
GWA Series 2 Gas-Fired Water Boilers – Boiler Manual
1 Prepare boiler location continued
 To prevent potential of severe personal injury or
death, check for products or areas listed below
beforeinstallingboiler.Ifanyofthesecontaminants
arefound:
• Removecontaminantspermanently.
— OR —
• Isolateboilerandprovideoutsidecombustionair.
Seenational, provincialor local codes for further
information.
Pleasereviewthefollowinginformationonpotentialcombustion
air contamination problems.
See Table 2forproductsandareaswhichmaycausecontami-
nated combustion air.
Air contamination Air openings
CombustionairandventilationopeningsmustcomplywithSec-
tion 5.3, “Air forCombustionandVentilation”, of National Fuel
GasCodeANSIZ223.1–latestedition,orapplicablelocalbuilding
codes.CanadianinstallationsmustcomplywithB149.1orB149.2
InstallationCodes.
Seetablebelowforminimumcombustion/ventilationairopening
sizes. Where openings are required, provide two (2) openings —
onewithin12inchesoftheceiling,theotherwithin12inchesof
the floor, as shown in the table illustrations.
Provide adequate combustion and ventilation air to
assurepropercombustionand reduce the riskof
severe personal injury, death or substantial property
damage caused by flue gas spillage and carbon
monoxideemissions.
Table 2 Corrosive contaminants and likely locations
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
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