Desa SMS24 - Manual (Page 5)

www.desatech.com 117536-01B 5
INSTALLATION
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. Creo-
sote will ignite if highly heated.
A dirty chimney flue may create
and distribute soot within the
house. Inspect chimney flue for
damage. If damaged, repair flue
before operating appliance.
NOTICE: Installation, service, and
repair of this appliance must be
performed by a qualified installer,
service agency, company or
gas supplier experienced with
this type of gas appliance. Only
factory authorized components
listed in these instructions may
be used in accordance with the
manufacturer’s instructions and
all codes and requirements of
the authority having jurisdiction.
Any modifications to this kit, or
use of unauthorized components
or accessory items will void the
manufacturer’s warranty, and may
result in a hazardous condition.
FLUE OPENING SPECIFICATIONS
Note: This vented appliance must be installed only
in a solid-fuel burning fireplace with a working flue
and constructed of noncombustible material.
The charts in Figure 2 indicate technical information
regarding the installation of your gas log set. Please
make sure that all of the specifications shown are
applicable before installation is attempted.
The fireplace must include a working flue and
venting system with the minimum openings shown
in the Figure 2.
CHECK GAS TYPE
Use only natural gas. If your gas supply is not
natural gas, you must install ON/OFF Safety
Valve/Pilot Kit (see Accessories, page 13). Call
dealer where you bought log set.
If the fireplace does not have a gas supply shutoff
valve, one must be installed.
VENTING SPECIFICATIONS FOR
INSTALLATION
The fireplace chimney flue and vent must be draft-
ing properly. To check the vent for proper drafting:
Light a tightly rolled newspaper on one end and
place it at the inside front edge of the fireplace.
Observe the smoke and be sure the vent is properly
drawing it up the chimney. If the smoke spills out
into the room, extinguish the flame and remove any
obstruction until proper venting is achieved.
The chimney flue must remain open a minimum
of 3" at all times during the operation of this
log set.
BURNER ORIFICE
LOG
SIZE
NATURAL
IN. NUM.
18" .120 31
24" .140 28
MINIMUM FIREBOX SIZES
MODEL FRONT
WIDTH
BACK
WIDTH*
DEPTH HEIGHT
SMS18 28" 18" 16" 18"
SMS24 32" 24" 16" 18"
Model
Burner
Descrip-
tion
Btu Input
Natural
Gas
Minimum
Vent
Opening
SMS18 18" Ramp 60,000 8" dia.
SMS24 24" Ramp 80,000 8" dia.
*At depth indicated
FUEL INLET PRESSURE
SPECIFICATIONS (W.C.)
Min. Max.
NG 5.5" 10.5"
LP 11" 13"
Figure 2 - Technical Information Charts