User Guide

Part number 550-142-055/0411
GV90+ gas-fired water boiler — User’s Information Manual
4
Air contamination
Common household and hobby products often contain
uorineorchlorinecompounds.Whenthesechemicals
pass through the boiler, they can form strong acids in
theventsystem or boiler.The acid caneatthrough
theventor boiler wall,causing seriousdamage and
presentinga possible threatof ue gasspillage into
the building.
Pleasereadtheinformationbelow.Ifthecontaminating
chemicalswillbepresent,haveyourinstallerpipethe
boiler air from outside per the Boiler manual.
Ifthe boiler is installed in any area
likely to cause contamination
, or if
productswhichwouldcontaminatethe
air cannot be removed, you must
pipe
combustion air to the boiler
air in-
take.Contaminatedcombustionairwill
damage the boiler and vent system, re-
sulting in possible severe personal injury,
death or substantial property damage.
Do not operate a GV90+ boiler in
a laundry room or pool facility
, for
example,withoutusing ducted outside
air.Theseareaswillalwayscontaincon-
taminants.
Prevent combustion air contamination —
Combustion air contamination:
Ensure that the combustion air will not contain any of
the contaminants in Figure 1
.
 Combustionairsupplyopeningsorintaketerminations
mustNOTbenearaswimmingpool,forexample.
Avoid areas subject to exhaust fumes from laundry facilities.
Theseareaswillalwayscontaincontaminants.
Figure 1
Corrosive contaminants and sources
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
Excessive dust and dirt
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