WIR 2
PRODUCT FEATURES
Safety device
This heater has a pilot with an Oxygen Depletion Sensing (ODS) safety shutoff system. The ODS/pilot is a required feature for vent- free room heaters. The ODS/pilot shuts off the heater if there is not enough fresh air.
Piezo ignition system
This heater has a piezo ignitor. This system requires no matches, batteries, or other sources to light heater.
AIR FOR COMBUSTION AND VENTILATION
WARNING: This heater shall not be installed in a confined space or unusually tight con- struction unless provisions are provided for adequate combustion and ventilation. Read the following instructions to ensure proper fresh air for this and other
Today’s home are built more energy efficient than ever. New materials, increased insula- tion, and new construction methods help reduce heat loss in homes. Home owners weather strip and caulk around windows and doors to keep the cold air out and the warm air in. During heating months, home owners want their homes as airtight as possible.
While it is good to make your home energy efficient, your home needs to breathe. Fresh air must enter your home. All
Exhaust fans, fireplaces, clothes dryers, and fuel burning appliances draw air from the house to operate. You must provide adequate fresh air for these appliances. This will ensure proper venting of vented
PROVIDING ADEQUATE VENTILATION
The following are excerpts from National Fuel Gas Code, ANSI Z223.1/NFPA 54, Section 5.3 Air for Combustion and Ventilation.
All spaces in homes fall into one of the three following ventilation classification:
1.Unusually Tight Contruction
2.Unconfined Space
3.Confined Space
The information on page 4 through 6 will help you classify your space and provide adequate ventilation.
Unusually Tight Construction
The air that leaks around doors and windows may provide enough fresh air for combustion and ventilation. However, in buildings of unusually tight construction, you must provide additional fresh air.
Unusually tight construction is defined as construction where:
a.walls and ceilings exposed to the outside atmosphere have a continuous water vapor retarder with a rating of one perm
b.weather stripping has been added on openable windows and doors and
c.caulking or sealants are applied to areas such as joints around window and door frames, between sole plates and floors, between sole plates and floors, between wall panels, at penetrations for plumbing, electrical, and gas lines, and at other openings.
If your home meets all of three criteria above, you must provide additional fresh air. See Ventilation Air From Outdoors, page 6
If you home does not meet all of the three cri- teria above, proceed to Determining
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