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Heat & Glo • SL-550 / 750 / 950TV-D • 2053-985 Rev. J • 4/0720
Fire or Explosion Hazard
• Gas build-up during line purge may ignite.
• Purge should be performed by qualifi ed technician.
• Ensure adequate ventilation.
• Ensure there are no ignition sources such as
sparks or open fl ames.
Fire hazard.
Explosion Risk.
Do NOT change the valve settings.
• This valve has been preset at the factory.
• Changing valve settings may result in fi re hazard
or bodily injury.
HIGH ALTITUDE INSTALLATIONS
U.L. Listed gas appliances are tested and approved
without requiring changes for elevations from 0 to 2000
feet in the U.S.A. and Canada.
When installing this appliance at an elevation above
2000 feet, it may be necessary to decrease the input
rating by changing the existing burner orifi ce to a
smaller size. Input rate should be reduced by 4% for
each 1000 feet above a 2000 foot elevation in the
U.S.A., or 10% for elevations between 2000 and 4500
feet in Canada. If the heating value of the gas has been
reduced, these rules do not apply. To identify the proper
orifi ce size, check with the local gas utility.
If installing this appliance at an elevation above 4500
feet (in Canada), check with local authorities.
• Ensure that gas line does not come in contact with outer
wrap of appliance. Follow local codes.
• Incoming gas line should be piped into the valve com-
partment and connected to the 1/2 inch connection on
the manual shutoff valve.
CHECK FOR GAS LEAKS
Explosion Risk
Fire Risk
Asphyxiation Risk
• Check all fi ttings and connections.
• Do not use open fl ame.
• After the gas line installation is complete, all
connections must be tightened and checked
for leaks with a commercially-available, non-
corrosive leak check solution. Be sure to rinse
off all leak check solution following testing.
• A small amount of air will be in the gas supply lines.
When fi rst lighting appliance it will take a short time for
air to purge from lines. When purging is complete the
appliance will light and operate normally.
Fittings and connections may have loosened during
shipping and handling.
WARNING
WARNING
WARNING