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C. Gas Connection
• Refer to Reference Section 3 for location of gas line
access in appliance.
• Gas line may be run through knockout(s) provided.
• The gap between supply piping and gas access hole
may be caulked with caulk 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.
Note: It is important to plumb the incoming gas line to
the location specified inside the appliance. This specific
location allows for future serviceability of the appliance.
See Figure 9.4
• Connect incoming gas line to the 1/2 in. (13 mm)
connection on manual shutoff valve.
WARNING! Risk of Fire or Explosion! Support control
when attaching pipe to prevent bending gas line.
• A small amount of air will be in the gas supply lines.
WARNING! Risk of Fire or Explosion! Gas build-up
during line purge could ignite.
• Purge should be performed by qualified service
technician.
• 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.
WARNING! Risk of Fire! DO NOT change valve set-
tings. This valve has been preset at the factory.
Figure 9.4 Incoming Gas Line Location
Majestic • JADE32IN, JADE42IN, JADE42IL Installation Manual • 2491-986 Rev. L • 4/19
D. 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 feet elevation:
• In the USA: Reduce input rate 4% for each 1000 feet
above 2000 feet.
• In CANADA: Input ratings are certified without a
reduction of input rate for elevations up to 4500 feet
(1370 m)above sea level. Please consult provincial and/
or local authorities having jurisdiction for installations at
elevations above 4500 feet (1370 m).
Check with your local gas utility to determine proper
orifice size.
E. Air Shutter Setting
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 minimum vertical vent run. Adjust air
shutter for longer vertical runs. See Figure 9.5.
• Loosen the 1/4 inch screw.
• Twist the air shutter to adjust.
• Air shutter may be opened for longer horizontal vent runs.
• Tighten the 1/4 inch screw.
NOTICE: If the flames appear to be orange or sooting
occurs, open the air shutter to prevent residue buildup on
the glass.
Figure 9.5 Air Shutter Location
Air Shutter Settings
JADE32IN (NG)
JADE32IN (PROPANE)
JADE42IN (NG)
JADE42IL (PROPANE)
1/16 in.
1/8 in.
1/16 in.
3/16 in.
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