Empire Comfort Systems CHR - Manual (Page 10)

Page 10 CHG/CHR
ADJUSTING FOR PROPER FLAME
Air Shutter (Figure 13)
Each burner is tested and adjusted at the factory prior to shipment.
However, variations in the local gas supply may make it necessary
to adjust the burner. The flames of the burner should be visually
checked. The burner flames should be yellow. If the burner does
not operate correctly, check if the air shutter or burner ports are
blocked by dirt, debris, spider webs, etc. and proceed with air
shutter adjustment. The amount of air which is drawn into a
burner is governed by a metal cup at the inlet of the burner called
an air shutter.
ROTATE TO ADJUST
AIR SHUTTER AIR SHUTTER
Figure 13
Air Shutter Adjustment
Be careful as the burner may be very HOT! The air
shutter is located behind the valve cover. There is an
access area at the bottom of the valve cover where you can
adjust the air shutter, with your fingers. A sooty, yellow
flame indicates insufficient air. Open the air shutter to
allow more air to the burner. If flame is noisy, blows out,
or lifts away from burner or will not light, this indicates too
much air. Close the air shutter to decrease the amount of
air to the burner.
BURNER MAINTENANCE AND CLEANING
Inspect the burner before each use of the outdoor gas fireplace.
The burner must be replaced prior to the outdoor gas fireplace
being put into operation if it is evident that the burner is damaged.
A replacement burner for this outdoor gas fireplace can be
obtained by contacting Empire Comfort Systems, Inc.
Flashback from Spiders (Figure 14)
In some areas of the country, spiders or small insects have been
found to create "flashback" problems. The spiders spin webs and/
or insects build nests in the burner venturi tube. The web and/or
nests can lead to gas flow obstruction which results in a "flashback"
(a fire in the venturi tube). Clean interior of burner with a flexible,
soft bristle, bottle brush in order to remove spiders, spider webs
and debris. Apply air pressure to burner ports to remove debris.
Figure 14
Burner Orifice Cleaning
Apply air pressure into the burner orifice and orifice tubing to
remove spiders, spider webs, dust, lint and debris. A flexible, soft
bristle, bottle brush can be used to clean the orifice tubing.
MAIN BURNER FLAME PATTERN (Figure 15)
Refer to the following photograph for proper main burner flame
characteristics.
Figure 15
MAINTENANCE AND SERVICE