# 45465K005
Page 13
Failure to follow the steps outlined below for each
appliance connected to the venting system being
placed into operation could result in carbon monox-
ide poisoning or death.
The following steps shall be followed for each
appliance connected to the venting system being
placed into operation, while all other appliances
connected to the common venting system are not in
operation:
1.
Seal any unused openings in the common venting
system.
2.
Visually inspect the venting system for proper size
and horizontal pitch, as required in the National
Fuel Gas Code, ANSI Z223.1/NFPA 54 (latest
edition) or the CSA B149.1, Natural Gas and
Propane Installation Codes and these instructions.
Determine that there is no blockage or restriction,
leakage, corrosion, or other deficiencies which
could cause an unsafe condition.
3.
As far as practical, close all building doors and
windows between the space in which the
appliance(s) connected to the venting system are
located and other spaces in the building.
4.
Close fireplace dampers.
5.
Turn on clothes dryers and any appliance not
connected to the venting system. Turn on any
exhaust fans, such as range hoods and bathroom
exhausts, so they are operating at maximum
speed. Do not operate a summer exhaust fan.
6.
Follow the lighting instructions. Place the unit
being inspected in operation. Adjust the thermo-
stat so appliance is operating continuously.
7.
Test for spillage from draft hood equipped appli-
ances at the draft hood relief opening after 5
minutes of main burner operation. Use the flame
of a match or candle.
8.
If improper venting is observed during any of the
above tests, the venting system must be corrected
in accordance with the National Fuel Gas Code,
ANSI Z223.1/NFPA 54 (latest edition) and/or the
CSA B149.1, Natural Gas and Propane Installa-
tion Codes.
9.
After it has been determined that each appliance
remaining connected to the venting system
properly vents when tested as outlined above,
return doors, windows, exhaust fans, fireplace
dampers, and any other gas-fired burning appli-
ance to their previous conditions of use.
CARBON MONOXIDE POISONING HAZARD
WARNING
Figure 17
Correct Positioning of CAM Coil in the
Horizontal Position with a Gas Furnace
Return
Supply
Incorrect
Return
Supply
Correct
changer can be viewed for possible openings using light
assistance or a probe can be inserted for sampling the air
stream. The cover for the opening shall be leaktight.
Upflow Installations
G1D80BT and G2D80CT series furnaces can be installed
as upflow units with either a side or bottom air return. For
bottom return applications, G2D80CT furnaces are
designed with a special knockout base. If desired, bottom
filter kit AFILT529 can be used.
For side return installation, a full-size return air opening
must be cut in the side panel. Corner embossments are
provided in each side.
When side return is desired on a furnace
with an open bottom, the bottom must be
sealed with a piece of sheet metal large
enough to cover the entire opening. Failure
to connect a return air duct to the bottom, or
to enclose the bottom when side return is
desired, may result in combustion products
being drawn into the circulating air stream
which could result in asphyxiation.
WARNING
To provide sufficient filter area for installations requiring
more than 1600 CFM nominal air delivery, return air will
have to be brought through both sides of the furnace,
through one side and the bottom, or optional external filter
AMB20A may be used.
