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Heatilator • CRAVE4836/ST-B, CRAVE6048/ST-B, CRAVE7260/ST-B, CRAVE8472/ST-B Installation Manual • 2301-973 Rev. H • 5/17
D. Gas Connection
• Refer to Reference Section 3.A for location of gas line
access in appliance.
• Gas line may be run through the left side of appliance.
• 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.
• 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 dur-
ing 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 settings.
This valve has been preset at the factory.
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.