Williamson Series 2 - Air Openings

5
Part Number 550-142-785/0812
GWI Series 2 Gas-Fired Water Boilers – Boiler Manual
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
Table 2 Corrosive contaminants and likely locations
 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
1 Prepare boiler location continued
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.