Venting And Combustion Air - General; Code Compliance; Combustion Air Contamination; Dual Fuel Venting Requirements - Weil-McLain 4 Series Manual

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Venting and Combustion Air - General

Code Compliance

Venting and combustion air piping installations must
provide provisions in accordance with the section,
"Air for Combustion and Ventilation," of the National
Fuel Gas Code – ANSI Z223 1/NFPA 54, latest
edition, and applicable provisions of the local building
codes
DANGER
!
Inspect finished vent piping thoroughly to ensure
all are airtight and comply with instructions in this
manual and applicable codes. Verify that all air
openings are correctly sized, unobstructed, and
free of airborne contaminants. Failure to provide
a properly installed vent system will cause severe
personal injury or death.

Combustion Air Contamination

Provide combustion air openings or air inlet piping as
described in this manual See Table 10 for products
and areas that may cause contaminated combustion
air

Dual Fuel Venting Requirements

WARNING
!
A venting system in a Dual Fuel installation
should meet the requirements for both fuels.
Failure to follow the vent system requirements
specified in this manual can result in severe
personal injury, death, or substantial property
damage.
When the installation calls for a Dual Fuel burner,
Gas and Oil, the vent system must be designed with
the specific requirements of both fuels as specified
in the Gas and Oil sections on pages 44-48
The vent system must be certified to both UL 1738
and UL 641, and any local codes having jurisdiction
Contact your preferred vent supplier for available
products
550-100-157/0523
boiler manual
4
Table 10 Corrosive contaminants and sources
Products to avoid
Spray cans containing chloro/fluorocarbons
Permanent wave solutions
Chlorinated waxes and 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 and muriatic acid
Cements and glues
Anti-static fabric softeners used in clothes dryers
Chlorine-type bleaches, detergents, and cleaning solvents
Adhesives used to fasten building products and other similar products
Excessive dust and dirt
Areas likely to have contaminants
Laundry and dry cleaning 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
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