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UNVENTED (VENT-FREE) GAS LOG HEATER
OWNER’S OPERATION AND INSTALLATION MANUAL
Remote-Ready Models Also Design-Certified As Vented
Decorative Appliances
Save this manual for future reference.
Save this manual for future reference.
WARNING: If the information in this manual
is not followed exactly, a fire or explosion
may result causing property damage, per-
sonal 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, adjust-
ment, alteration, service, or maintenance
can cause injury or property damage. Refer
to this manual for correct installation and
operational procedures. For assistance or
additional information consult a qualified
installer, service agency, or the gas supplier.
WARNING: This appliance is for installa-
tion only in a solid-fuel burning masonry or
UL127 factory-built fireplace, or in an ap-
proved ventless firebox. It is design-certi-
fied for these installations in accordance
with ANSI Z21.11.2. Exception: Do not in-
stall this appliance in a factory-built fire-
place that includes instructions stating it
has not been tested or should not be used
with unvented gas logs. For unmarked fac-
tory-built fireplaces, contact fireplace manu-
facturer if unsure of this application.
WARNING: This is an unvented gas-fired heater. It uses air (oxygen) from the room in which
it is installed. Provisions for adequate combustion and ventilation air must be provided. Refer
to
Air for Combustion and Ventilation
section on page 5 of this manual.
For more information, visit www.desatech.com
For more information, visit www.desatech.com
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
24" and 30"Remote-Ready Models:
VRL24NR, VRL24PR, VRL30NR,
VRL30PR, CSG3924NR, CSG3924PR
CTB3924NR, CTB3924PR
24" and 30" Thermostat Models:
VRL24NT, VRL24PT, VRL30NT,
VRL30PT, CSG3924NT, CSG3924PT
CTB3924NT, CTB3924PT