PROVIDE ADEQUATE COMBUSTION
AND VENTILATION AIR
•This heater shall not be installed in a confined space or unusually tight construction unless provisions are provided for adequate combustion and ventilation air.
•This heater must have fresh air for proper operation. If not, poor fuel combustion could result. Read the following instructions to insure proper fresh air for this and other fuel burning appliances in your home.
Modern construction standards have resulted in homes that are highly energy efficient and that allow little heat loss. However, your home needs to breathe and all fuel burning appliances need fresh air to function properly and safely. Exhaust fans, clothes dryer, fireplaces and other fuel burning appliances all use the air inside the building. If the available fresh air supply is insufficient to meet the demands of these appliances, problems can result.
Confined Space:
The National fuel Gas Code, ANSI Z223.1 / NFPA 54 defines a confined space as a space whose volume is less than 50 cubic feet per 1000 BTU per hour (4.8 m3 per kw) of the aggregate input rating of all appliances installed in that space.
Unconfined Space:
An unconfined space is defined in the same standards as a space whose volume is not less than 50 cubic feet per 1000 BTU per hour (4.8 m3 per kw) of the aggregate input rating of all appliances installed in that space. Rooms communicating directly with the space in which the appliances are installed, through openings not furnished with doors, are considered a part of the unconfined space.
Example:
10,000 BTU Legacy heater should only be installed in a room whose volume is more than 500 cubic feet. A room that is 8' x 8' x 8' (512 cubic feet) would be acceptable for a Legacy 10,000 BTU/hour heater.
If an additional fuel fired appliance is installed in the same room, the input rating of that appliance should be added to that of the Legacy heater to determine the minimum sized room that should be serviced by both appliances.
Unusually tight construction is defined as construction where:
a)Walls and ceilings exposed to the outside atmosphere have a continuous water vapour retarder with a rating of 1 perm (6 x
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
WARNING: If the area in which the heater may be operated is smaller that that defined as an unconfined space or if the building is of unusually tight construction, provide adequate combustion and ventilation air by one of the methods described in the National fuel Gas code, ANSI Z223.1 / NFPA 54, Section 5.3 or applicable local codes.
GAS TYPE
Verify the type of gas supply to be used, either natural gas or LP (Propane), and make sure the marking on the appliance rating plate agrees with that of the supply gas. The rating plate is located on the side of the heater, which indicates the type of gas the heater is manufactured for.
WARNING: This appliance is only for use with the type of gas indicated on the rating plate.
This appliance is not convertible for use with other gases.
ITEMS NEEDED FOR
HEATER INSTALLATION
Before installing the heater, make sure you have these items:
•Gas piping (check local codes)
•Test gauge connection
•Sealant (resistant to LP gases) - approved thread compound
•Manual
•Sediment trap - where required
•Ground joint union
•Tee joint and pipe wrench
*An installer supplied
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