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BLUE FLAME VENT-FREE NATURAL GAS HEATER
OWNER’S OPERATION AND INSTALLATION MANUAL
WARNING: If the information in this manual is
not followed exactly, a fire or explosion may
result causing 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: This is an
unvented gas-fired heater.
It uses air (oxygen) from
the room in which it is
installed. Provisions for
adequate combustion
must be provided. Refer to
page 5 of this manual
This appliance may be in-
stalled in an aftermarket*
manufactured (mobile) home,
where not prohibited by state
or local codes.
* Aftermarket: Completion of sale,
not for purpose of resale, from the
manufacturer
This appliance is only for use
with the type of gas indicated
on the rating plate. This appli-
ance is not convertible for
use with other gases.
Heater Sizes: 20,000 Btu/Hr Thermostat and
30,000 Btu/Hr Thermostat Model Heaters
®
CGN20T
CGN20TL
CGN30T
CGN30TL