PRODUCT SPECIFICATIONS
Page 4
Gas Log Size
Dimension
18"
24"
30/33"
Height of Front Opening
15"
15"
15"
Width of Front Opening
21 1/2"
26 1/2"
35 1/2"
Depth
14"
14"
14"
Width of Rear Opening
16”
21”
25”
MINIMUM SIZE FIREPLACE DIMENSIONS
LP
33,000
40,000
40,000
BTU Ratings
18"
24"
30/33”
NAT
34,000
40,000
40,000
BTU'S RATING
General Instructions
PROVISIONS FOR 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.
The National Fuel Gas Code ANSI Z223.1/NFPA54 defines a confined space as a space whose
volume is less than 50 cubic feet per 1,000 Btu per hour (4.8m
3
per kw) of the aggregate input rating
of all appliances installed in that space and an unconfined space as a space whose volume is not less that
50 cubic feet per 1,000 Btu per hour (4.8m
3
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.
Unusually tight construction is defined as construction where:
a) Walls and ceiling exposed to the outside atmosphere have a continuous water vapor retarder with
a rating of 1 perm ( 6 x 10-11 kg per-pa-sec-m2) or less with openings gasketed or sealed, and
b) Weather stripping has been added on openable windows and doors, and
c) Caulking or sealant are applied to areas such as joints around windows and door frames,
between sole plates and floors, between wall-ceiling joints, between wall panels, at penetrations
for plumbing, electrical, and gas lines, and at other openings.
If the area in which the heater may be operated is smaller than that defined as an unconfined
space or if the building is of unusually tight construction, provide adequate combustion and venti-
lation air by one of the methods described in the “National Fuel Gas Code, ANSI Z223.1/NFPA
54, the international Fuel Gas Code” or applicable local codes.
Keep burner and control compartment clean. See Installation and Operating Instructions ac-
companying heater.
If the area in which the heater may be operated does not meet the required volume for indoor com-
bustion air, combustion and ventilation air shall be provided by one of the methods described in
the “National Fuel Gas Code, ANSI Z223.1/NFPA 54, the international Fuel Gas Code” or appli-
cable local codes.
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