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The following is a list of safety rules and precautions
that must be followed when installing this furnace.
1. Use only with the type of gas approved for this
furnace. Refer to the furnace rating plate.
2. Install this furnace only in a location and position as
specified in the Location section on page 3 of
these instructions.
3. Provide adequate combustion and ventilation air to
the furnace space as specified in the Combustion
and Ventilation Air section beginning on page 4 of
these instructions.
4. Combustion products must be discharged outdoors.
Connect this furnace to an approved vent system
only, as specified in Venting beginning on page 6 of
these instructions.
5. Never test for gas leaks with an open flame. Use a
commercially available soap solution made specifi-
cally for the detection of leaks to check all connec-
tions, as specified in Gas Supply and Piping
beginning on page 12 of these instructions.
6. Always install furnace to operate within the furnace's
intended temperature rise range with a duct system
INSTALLATION
These instructions must be placed on or near the
furnace in a conspicuous place.
This furnace is design certified by CSA International as a
Category I furnace using air from inside the structure for
combustion. The combustion system is fan-assisted, which
means it is equipped with an integral mechanical means to
draw products of combustion through the heat exchanger.
G1N80BT and CG80TB models may be installed as upflow
or horizontal furnaces. G1N80BR and CG80RB models
may be installed as counterflow (downflow) or horizontal
furnaces. When installed horizontally, the installer must
install a sheet metal screw to retain the upper door as
shown in Figure 1.
G1N80BU and CG80UB models must be installed only as
upflow furnaces.
Never install any furnace on its back.
Page 2
IMPORTANT SAFETY INFORMATION
which has an external static pressure within the
allowable range, as specified in Temperature Rise
on page 16 of these instructions. See furnace rating
plate.
7. When a furnace is installed so that the supply ducts
carry air circulated by the furnace to areas outside
the space containing the furnace, the return air shall
also be handled by duct(s) sealed to the furnace
casing and terminating outside the space containing
the furnace. See Circulating Air Supply on page 8
of these instructions.
8. A gas-fired furnace for installation in a residential
garage must be installed as specified in the Loca-
tion section on page 3 of these instructions.
9. The furnace is not to be used for temporary heating of
buildings or structures under construction as specified
on page 4 of these instructions.
In the State of Massachusetts:
This product must be installed by a licensed Plumber
or Gas Fitter. When flexible connectors are used, the
maximum length shall not exceed 36". When lever-
type gas shutoffs are used, they shall be T-handle
type.
Horizontal Installations
Figure 1
# 45464K003
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