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• Refer to Section 3 for location of gas line access in
appliance.
• The bottom surround for this appliance may be removed
to gain access to the control cavity for ease of access
during the gas connection process. See Figure 9.1.
• Gas line may be run through knockout(s) provided.
• The gap between supply piping and gas access hole
may be sealed with caulk or aluminum foil tape with a
minimum of 300 ºF continuous exposure rating or stuffed
with non-combustible, unfaced insulation to prevent cold
air infiltration.
• Ensure that gas line does not come in contact with outer
wrap of the appliance. Follow local codes.
• Pipe incoming gas line into valve compartment.
• Connect incoming gas line to the 1/2 in. (13 mm) NPT
connection on manual shutoff valve.
WARNING! Risk of Fire or Explosion! Support control
when attaching pipe to prevent bending gas line.
WARNING! Risk of Fire or Explosion! Gas build-up
during line purge could ignite.
• A small amount of air will be in the gas supply lines.
• Ensure adequate ventilation.
• Ensure there are no ignition sources such as sparks or
open flames.
Light the appliance. It will take a short time for air to purge
from lines. When purging is complete the appliance will
light and operate normally.
WARNING! Risk of Fire, Explosion or Asphyxiation!
Check all fittings and connections with a non-corrosive
commercially available leak-check solution. DO NOT use
open flame. Fittings and connections could have loos-
ened during shipping and handling.
Figure 9.1 Bottom Surround Removal
58
GAS CONNECTION
AND SERVICE ACCESS
Heat & Glo • 6KX-AU Installation Manual • 2589-980 Rev. B • 5/23
E. High Altitude Installations
NOTICE: If the heating value of the gas has been reduced,
these rules do not apply. Check with your local gas utility
or authorities having jurisdiction.
When installing above 2000 ft. (610 m) elevation:
Reduce input rate 4% for each 1000 ft. (305 m) above
2000 ft. (610 m).
F. Air Shutter Setting
WARNING! Risk of Explosion or Delayed Ignition!
Improperly adjusted air shutter could cause soot buildup.
CAUTION! Risk of Burns! Components are HOT! Wear
protective gloves when adjusting shutter.
NOTICE: If sooting occurs, provide more air by opening
the air shutter.
Air shutter settings should be adjusted by a qualified ser-
vice technician at the time of installation. The air shutter
is set at the factory for a typical minimum vent run which
consists of enough horizontal to vent pipe terminate
through a 2x6 (51x152 mm) wall:
Top Vented with one 90 degree elbow and DVP-TRAP2
termination cap for Natural Gas or Rear Vented with the
DVP-TRAP2 termination cap. It may need to be adjusted
for other venting scenarios up to full open.
Adjust air shutter for different vent runs.
See Figure 9.2.
• Loosen the wing nut.
• Move the air handle to the right to open the air shutter.
• Move the air handle to the left to close the air shutter.
• Tighten the wing nut.
Shutter Setting Verification / Flame Appearance
• After 15 minutes, the flames will be a yellow/blue mix.
The front flames may be blue at this time.
• After 30 minutes, the flames should be yellow with
some blue flames near the burner ports.
• After 1 hour, the flame will be at its maximum maturity.
NOTICE: Flames should not appear orange or stretch
to the top refractory/ top of firebox. If flames are dark
orange with dark, smoky tips, provide more primary air to
the burner by opening the air shutter accordingly.
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