Ir Hutter Djustment - Lennox Hearth Products Designer DBV Installation And Operation Manual

p (lp) n
ropane and atural
Your Designer™ gas insert is equipped from the factory for
use with natural gas only as specified on the Safety / Listing
label attached to the appliance. This appliance can only be
operated using propane gas (LP) if a certified fuel conver-
sion kit provided by Lennox Hearth Products is installed by
a qualified service technician.
Also check the orifice size on the label on the igniter bracket.
It must be the correct size for the fuel and altitude.
Do not run propane tank dry. Running the tank dry may
cause a hazardous condition due to pressure drop in
empty tank.
Solid fuel is NOT to be used with this unit.
g s
as upplies
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
a s a
ir hutter djustment
The Designer gas insert has an air shutter control lever
located behind the lower door on the insert's face and to
the left of the gas valve. See Figure 17. The lever is linked to
the primary air shutter on the main burner. The air shutter
regulates the amount of primary air the burner receives and
therefore how clean the insert burns. The air shutter should
only be adjusted by a qualified gas technician. The insert
should burn for about 15 minutes with the logs installed
before adjusting the air shutter. Pulling the lever out will
open the shutter and turn the flames more transparent and
blue. Pushing the lever in will close the shutter and turn the
flames more orange.
Caution: The air shutter should never be set so as to
make the tips of the flames sooty or create sooting on
the viewing glass, logs, or heat exchanger. If soot begins
to form after burning, the air shutter should be opened
gradually until the sooting condition stops. Gas quality
and gas pressure may vary, which can affect the burning
characteristics of the insert.
Air Shutter
Adjuster
Figure 17
1