35
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
Step 10. REMOVING AND INSTALLING
THE GLASS DOOR
Air Shutter Adjustment Guidelines
:
Amount of
Primary Air
Flame
Color
Air Shutter
Adjustment
If air shutter is
closed too far
Flame will
be orange
Air shutter
gap should be
increased
If air shutter is
open too far
Flame will
be blue
Air shutter
gap should be
decreased
Step 11. BURNER ADJUSTMENTS
Flame Appearance and sooting
Proper flame appearance is a flame which is
blue at the base and becomes yellowish-orange
in the body of the flame.
When the appliance is first lit, the entire flame
may be blue and will gradually turn yellowish-
orange during the first 15 minutes of operation.
If the flame remains blue, or if the flame is
orange with evidence of sooting (black tip), the
air shutter opening may need to be adjusted.
If the air shutter opening is closed too far,
sooting may develop. Sooting is indicated by
black puffs developing at the tips of very long
orange flames. Sooting results in black deposits
forming on the logs, appliance inside surfaces
and on exterior surfaces adjacent to the vent
termination.
Sooting is caused by incomplete combustion
in the flames and lack of combustion air enter-
ing the air shutter opening. To achieve a warm
yellowish-orange flame with an orange body
that does not soot, the shutter opening must be
adjusted between these two extremes.
Air Shutter Adjustment Guidelines
• If there is smoke or soot present, first
check the log set positioning to ensure that
the flames are not impinging on any of the
logs. If the log set is properly positioned
and a sooting condition still exists, then the
air shutter opening should be increased.
• The more offsets in the vent system, the larger
the air shutter opening will need to be.
• An appliance operated with the air shutter
opened too far, may have flames that appear
blue and transparent. These weak, blue and
transparent flames are termed anemic.
• Propane models may exhibit flames which
candle or appear stringy. If this is present
and persists, adjust the air shutter to a more
closed position, then operate the appliance
for a few more minutes to ensure that the
flame normalizes and the flames do not
appear sooty.
The following chart is provided to aid you in
achieving the correct air shutter adjustment
for your installation.
Glass Door Latch
Glass Door
Firebox Floor
Bottom Vee-flange
Glass Door Frame
Top Flange
Glass Door Frame
Figure 62
- front face assembly and barrier
removed to access glass door
Installation and Operation Instructions
900300-00, 01/2018
Innovative Hearth Products
DRT35ST and DRT35PF Direct-Vent Gas Fireplaces
Only doors certified with the appliance
shall be used.
Seules des portes certifiées pour cet
appareil doivent être utilisées.
WARNING
•
Do not attempt to substitute the
materials used on these doors,
or replace cracked or broken
glass.
• Handle this glass with extreme
care! Glass is susceptible to
damage – Do not scratch or
handle roughly while reinstall-
ing the glass door frame.
• The glass door(s) of this appli-
ance must only be replaced as
a complete unit as provided
by the manufacturer. Do not
attempt to replace broken,
cracked or chipped glass sepa-
rately.
•
Do not attempt to touch the
front enclosure glass with your
hands while the fireplace is in
use.
•
DO NOT abuse glass door by
striking or slamming shut.
WARNING
Do not operate appliance with
the glass front removed, cracked
or broken.
AVERTISSEMENT
Ne pas utiliser l'appareil si le
panneau frontal en verre n'est
pas en place, est craqué ou
brisé.
WARNING
The door should easily close
without needing to be pressed
down. If it has to be pressed
down to close, the gasket in the
top of the door should be dressed
so it lays on the glass.
Removing Glass Enclosure Panel
(see
Figure 62)
To access the glass door securing latches, first
remove the hood by pulling firmly straight away
from the unit. Remove the front face assembly
by lifting top and bottom evenly approximately
1/2" and pulling straight out from the unit once
the brackets are disengaged.
Locate the two (2) glass door spring latches at
the top of the control compartment
(see
Figure
58
)
. Pull out each spring latch until it disengages
from the door frame bottom vee-flange.
Remove the door by tilting it outward at the
bottom and lifting it up. Set the door aside, tak-
ing care to protect it from inadvertent damage.
Installing Glass Enclosure Panel
(see Figure 58)
Retrieve the glass door. Visually inspect the
gasket on the backside of the frame. Gasket
surface must be clean, free of irregularities
and seated firmly.
Position the door in front of the firebox opening
with the bottom of the door held away from the
fireplace
(
Figure 58
)
. Hook the top flange of the
door frame over the top of the firebox frame.
Let the bottom of the door frame swing gently
in towards the fireplace ensuring that the gasket
seats evenly as the door frame draws shut. Fas-
ten the two spring latches located underneath
the firebox floor to the door's vee-flange.
NOTE: Front Face Assembly with
barrier installed must be rein-
stalled prior to operation.
