Installation - Desa VUL18NR Owner's Operation And Installation Manual

Unvented (vent-free) gas log heater
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NOTICE: This heater is intended
for use as supplemental heat.
Use this heater along with your
primary heating system. Do not
install this heater as your pri-
mary heat source. If you have a
central heating system, you may
run system's circulating blower
while using heater. This will help
circulate the heat throughout the
house. In the event of a power
outage, you can use this heater
as your primary heat source.
WARNING: A qualified ser-
vice person must install heater.
Follow all local codes.
NOTICE: State or local codes may
only allow operation of this appli-
ance in a vented configuration.
Check your state or local codes.
WARNING: Make sure the
selector switch is in the OFF
position before installing heater
(Remote-Ready Models Only).
WARNING: Before installing
in a solid fuel burning fireplace,
the chimney flue and firebox
must be cleaned of soot, creo-
sote, ashes and loose paint by
a qualified chimney cleaner.
Creosote will ignite if highly
heated. A dirty chimney flue may
create and distribute soot within
the house. Inspect chimney and
firebox flue for damage. If dam-
aged, repair flue and firebox
before operating heater.
122001-01C

INSTALLATION

air vents or ash clean-out doors
located on floor or wall of fire-
place. If not, drafting may cause
pilot outage or sooting. Use a
heat-resistant sealant. Do not
seal chimney flue damper.
heater
• in a bedroom or bathroom
unless installed as a vented
appliance, see page 12 (Re-
mote-Ready Models Only)
• in a recreational vehicle
• where curtains, furniture,
clothing or other flammable
objects are less than 36" from
the front and 42" from top
heater, For side clearances
see Figure 4 page 10
• in high traffic areas
• in windy or drafty areas
ates warm air currents. These
currents move heat to wall sur-
faces next to heater. Installing
heater next to vinyl or cloth wall
coverings or operating heater
where impurities (such as, but
not limited to, tobacco smoke,
aromatic candles, cleaning flu-
ids, oil or kerosene lamps, etc.) in
the air exist, may discolor walls
or cause odors.
IMPORTANT: Vent-free heaters add moisture
to the air. Although this is beneficial, installing
heater in rooms without enough ventilation
air may cause mildew to form from too much
moisture. See Air for Combustion and Ventila-
tion, page 6.
www.desatech.com
WARNING: Seal any fresh
WARNING: Never install the
CAUTION: This heater cre-
9

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