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.
NOTICE: 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/NFPA 54.
This product is listed to ANSI standards for “Ventless Gas
Firebox Enclosures for Gas-Fired Unvented Gas Log
Type Room Heaters".
MODELS: BUF32A, BUF36A, BUF42A
BUF32-T, BUF36-T, BUF42-T
BUF32-H, BUF36-H, BUF42-H
LABORATORY: Underwriters Laboratories, Inc. (UL)
TYPE: Ventless Firebox Enclosures for Gas-Fired
Unvented Gas Log Type Room Heaters
STANDARD: CSA/ANSI-Z21.91:20
WARNING: This product and the
fuels used to operate this product (liquid
propane or natural gas), and the products
of combustion of such fuels, can expose
you to chemicals including benzene, which
is known to the State of California to cause
cancer and reproductive harm. For more
information go to: www.P65Warnings.
ca.gov.
This product is for use ONLY with a listed decorative
"Gas-Fired Unvented Room Heaters".
1
Model(s) Altitude Maximum
Allowable
BTU/hr
BUF32 A/T/H (0-2000 FT) 30,000
BUF36 A/T/H (0-2000 FT) 40,000
BUF42 A/T/H (0-2000 FT) 40,000
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 750 ºC shall be considered
non-combustible materials.
Materials made of or surfaced with wood, compressed pa-
per, plant bers, plastics, or other material that can ignite
and burn, whether ame proofed or not, or plastered or
unplastered shall be considered combustible materials.
F. Electrical Codes
NOTICE: This appliance must be electrically wired
and grounded in accordance with local codes or, in the
absence of local codes, with National Electric Code
ANSI/NFPA 70-latest edition.
C. High Altitude Installations
NOTICE: If the heating value of the gas has been reduced,
these rules do not apply. Check with your local gas utility
or authorities having jurisdiction.
When installing above 2000 feet elevation:
• In the USA: Reduce input rate 4% for each 1000 feet
above 2000 feet.
Check with your local gas utility to determine proper
orice size.
Note: Smoke, carbon monoxide or combination alarms
Alarm manufacturers recommend that alarms be kept at
least 15 ft. to 20 ft. laterally away from fuel-burning sources.
Installing the alarm closer than 15 ft. will not harm the
alarm, but may increase the frequency of nuisance alarms.
Mounting alarms on the wall versus the ceiling will further
reduce nuisance alarms.
4Monessen • BUF32/36/42 Installation Manual • 4139-901 • Rev A • 01/21
