Venting For Combustion Air - Navien NPE-180A2 Installation Manual

3.6 Venting for Combustion Air

WARNING
Carbon Monoxide Hazard
The installation of carbon monoxide detectors
may be required in your area for your hot water
heater or other gas fired appliances. Check
applicable codes for the installation location of
the water heater.
Carbon monoxide detectors should comply with
NFPA 720 and be ANSI/UL 2034 listed and IAS
certified.
Additional Guidelines for Combustion Air
Combustion air piping to the outside is
●
recommended. (Direct Venting)
The water heater may be installed with a single
●
pipe carrying the flue products to the outside
while using combustion air from the equipment
room. In order to use the room air venting
option on page 47, specific conditions and
considerations must be followed.
WARNING
To prevent death, serious injury or property
damage:
Do not install the water heater or combustion
●
air piping in areas with contaminated air
(e.g. high levels of dust, sawdust, sand, flour,
aerosols, fluorine or chlorine compounds).
DO NOT allow liquids or vapors from pool, laundry
●
products, or common household cleaning
products to enter hot water heater. These can
cause serious product damage and can even
result in flue gas leakage in extreme cases.
ALWAYS check for areas and products listed
●
in the following tables before installing the
water heater or air inlet piping.
ALWAYS remove contaminants or relocate
●
air inlet and vent terminations to other
clean areas. Use direct venting to supply
clean air from outside the building. Navien
recommends regular filter cleaning and
maintenance in these areas.
The warranty does not cover damage
Note
caused by air contaminants.
Corrosive Contaminants
Muriatic acid/hydrochloric acid
Refrigerant leaks
Chlorine-type bleaches, detergents, and cleaning
solvents found in household laundry rooms
Varnish removers or paint
Adhesives used to fasten building products and
other similar products
Chlorine-based swimming pool chemicals
Permanent wave solutions
Anti-static fabric softeners used in clothes dryers
Calcium chloride used for thawing
Spray cans containing chloro/fluorocarbons
Cements and glues
Sodium chloride used for water softening
Chlorinated waxes/cleaners
Corrosive Sources
Remodeling areas
Refrigeration repair shops
New building construction
Metal fabrication plants
Laundry areas and establishments/dry cleaning
Swimming pools
Auto body shops
Furniture refinishing areas and establishments
Garages with workshops
Plastic manufacturing plants
Beauty shops
Photo processing plants
Installing the Water Heater 41