03/04
35048 Rev L
9
IB75 B-VENT GAS APPLIANCE
Note:
The outside air kit can terminate at any level with the exception that it must terminate at least 1 ft below the
vent termination cap. The outside air kit inlet thimble should be positioned at least 4 ft above ground level in a
manner that will not allow snow, leaves, etc. to block the inlet.
WARNING!
Exhaust products of gasoline engines are hazardous. The outside air must not be taken from a garage
space, attic spaces, basements, or above the roofing where other heating appliances, fans, or chimneys
exhaust or utilize air.
F. UTILITIES
1.High Altitude Installation
For U.S. Installation, appliances are tested and
approved for elevations from 0-2000 feet. When
installing this appliance at an elevation above 2000
feet, National Fuel Gas Codes require a decrease of
the input rating by changing the existing burner orifice
to a smaller size. Input should be reduced 4% for each
1000 feet above sea level. Check with the local gas
utility for proper orifice size identification. The correct
orifice is available from your Heatilator distributor.
For Canada, appliances are certified for elevations from
0-4500 feet. When installing this appliance at an
elevation between 0-4500 feet in Canada, the input
rating does not need to be reduced. When installing
this appliance at an elevation above 4500 feet in
Canada, check with local authorities.
2.Connect the Gas Line
Open the control access panel as shown in Figure 10.
This appliance is provided with a stainless steel flexible
connector and listed (and Commonwealth of
Massachusetts approved) T-handle manual shutoff valve.
See Figure 11.
A gas access hole is provided on the right hand side of
the appliance. We recommend that the piping be brought
in from the right side. However, if it becomes necessary
to plumb from the left, a gas knockout is provided.
The incoming gas line should be piped into the valve
compartment and connected to the 1/2 in. FIP connection
provided on the manual shutoff valve. See Figure 11 to
connect the gas line.
Optional:
Seal around the gas line
to prevent cold air leakage.
All connections must be tightened and checked for
leaks with a commercially available, non-corrosive leak
check solution. Be sure to rinse off the solution when
done leak testing.
Bleed the gas line to extract any air that may have been
trapped inside the pipe.
7.Install the Outside Air Kit
An outside air kit is supplied with this appliance. The outside air kit helps to decrease the amount of room air taken,
by utilizing outside air for combustion. We strongly recommend that it be installed.
To install the outside air kit, refer to the installation instructions provided with the kit.
Figure 11 - Gas Line
Figure 10
Control Access Panel Installation/Removal
