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Save this manual for future reference.
For more information, visit www.desatech.com
For more information, visit www.desatech.com
WARNING: If the information in this manual is not
followed exactly, a fire or explosion may result caus-
ing property damage, personal injury, or loss of life.
— Do not store or use gasoline or other flammable
vapors and liquids in the vicinity of this or any
other appliance.
— WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance.
• Do not touch any electrical switch; do not use
any phone in your building.
• Immediately call your gas supplier from a
neighbor’s phone. Follow the gas supplier’s
instructions.
• If you cannot reach your gas supplier, call the
fire department.
— Installation and service must be performed by a
qualified installer, service agency, or the gas
supplier.
WARNING: Improper installation, ad-
justment, alteration, service, or main-
tenance can cause injury or property
damage. Refer to this manual for cor-
rect installation and operational pro-
cedures. For assistance or additional
information consult a qualified installer,
service agency, or the gas supplier.
WARNING: FOR USE ONLY WITH A
LISTED DECORATIVE TYPE UNVENTED
ROOM HEATER. DO NOT BUILD A
WOOD FIRE.
V50S, V50SH, and VFB50NC Vent-Free Fireboxes
This firebox has been tested and ap-
proved by CSA International under
Z21.91-2001 for use with approved
ANSI Z21.11.2 decorative type
unvented room heater.
This appliance may be installed in an aftermarket*, permanently located, manufactured
(mobile) home, where not prohibited by local codes.
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.
*Aftermarket: Completion of sale, not for purpose of resale, from the manufacturer
UNVENTED (VENT-FREE)
UNIVERSAL FIREBOX
OWNER’S OPERATION AND
INSTALLATION MANUAL