20
Heatilator • Novus NBV • 4055-188 Rev C • 04/08
WARNING
Fire Risk
Explosion Risk
• Gas build-up during line purge may
ignite.
• Purge should be performed by quali
fi
ed
technician.
• Ensure adequate ventilation.
• Ensure there are no ignition sources such
as sparks or open
fl
ames.
WARNING
CHECK FOR GAS LEAKS
Fire Risk
Explosion 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.
Fittings and connections may have loosened
during shipping and handling.
D. High Altitude Installations
U.L. listed gas appliances are tested and approved without
requiring changes for elevations from 0 to 2000 ft in the USA
and Canada.
When installing this appliance at an elevation above 2000 ft,
it may be necessary to decrease the input rating by chang-
ing the existing burner ori
fi
ce to a smaller size. Input rate
should be reduced by 4% for each 1000 ft above a 2000 ft
elevation in the U.S.A., or 10% for elevations between 2000
and 4500 ft in Canada. If the heating value of the gas has
been reduced, these rules do not apply. To identify the prop-
er ori
fi
ce size, check with the local gas utility.
If installing this appliance at an elevation above 4500 ft (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
compartment and connected to the 1/2 in. connection
on the manual shutoff valve.
• 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.
WARNING
Fire Risk
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.
