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Heat & Glo • FB-IN-S, FB-GRAND-S • 783-910 Rev. D • 3/08
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Note: To assure top performance, safety and effi ciency,
inserts must be installed with an approved fl ue liner as per
CAN/CGA B-149 or National Fuel Gas Code ANSI Z223 and
these instructions.
Note: This installation must conform with local codes. In the
absence of local codes you must comply with the National
Fuel Gas Code, ANSI Z223.1-latest edition in the U.S.A. and
the CAN/CGA B149 Installation Codes in Canada.
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Listing and Code Approvals
C. High Altitude Installations
U.L. Listed gas appliances are tested and approved with-
out requiring changes for elevations from 0 to 2000 feet
in the U.S.A. and Canada.
When installing this appliance at an elevation above
2000 feet, it may be necessary to decrease the input rat-
ing by changing the existing burner orifi ce to a smaller
size. Input rate should be reduced by 4% for each 1000
feet above a 2000 foot elevation in the U.S.A., or 10% for
elevations between 2000 and 4500 feet in Canada. If the
heating value of the gas has been reduced, these rules
do not apply. To identify the proper orifi ce size, check with
the local gas utility.
If installing this appliance at an elevation above 4500 feet
(in Canada), check with local authorities.
B. BTU Specifi cations
MODELS: FB-GRAND-S, FB-IN-S
LABORATORY: Underwriters Laboratories, Inc. (UL)
TYPE: Vented Gas Appliance Heaters
STANDARD: ANSI Z21.88-2002 • CSA2.33-M2003 • UL307B
Do NOT use this appliance if any part has been under water.
Immediately call a qualifi ed service technician to inspect the
appliance and to replace any part of the control system and
any gas control which has been under water.
This product is listed to ANSI standards for “Vented Gas
Appliance Heaters” and applicable sections of “Gas Burn-
ing Heating Appliances for Manufactured Homes and
Recreational Vehicles”, and “Gas Fired Appliances for
Use at High Altitudes”.
Models
U.S. (0-2000 ft.) or Canada (2000-4500 ft.)
Maximum
Input
BTU/h
Minimum
Input
BTU/h
Orifi ce
Size (DMS)
FB-GRAND-S (NG)
US
40,000 27,000 0.125 mm
CANADA
36,000 24,300 31
FB-IN-S (NG)
US
38,000 27,000 31
CANADA
34,200 24,300 32
FB-GRAND-S (LP)
US
34,000 28,900 50
CANADA
31,000 19,000 51
FB-IN-S (LP)
US
34,000 28,900 50
CANADA
31,000 19,000 51
A. Appliance Certifi cation
D. Non-Combustible Materials Specifi cation
Material which will not ignite and burn. Such materials are
those consisting entirely of steel, iron, brick, tile, concrete,
slate, glass or plasters, or any combination thereof.
Materials that are reported as passing ASTM E 136,
Standard Test Method for Behavior of Materials in a
Vertical Tube Furnace at 750º C, shall be considered
non-combustible materials.
E. Combustible Materials Specifi cation
Materials made of or surfaced with wood, compressed
paper, plant fi bers, plastics, or other material that can ig-
nite and burn, whether fl ame proofed or not, or whether
plastered or unplastered shall be considered combustible
materials.
WARNING
NOT INTENDED FOR USE AS A PRIMARY HEAT SOURCE.
This appliance is tested and approved as either supplemen-
tal room heat or as a decorative appliance. It should not be
factored as primary heat in residential heating calculations.