GM9S80 Installation Manual
9
Most homes will require outside air be supplied to the fur-
nace area by means of ventilation grilles or ducts connecting
directly to the outdoors or spaces open to the outdoors such
as attics or crawl spaces.
-
appliance and the vent system does not have to be “gas
tight”. Gas furnaces with induced draft blowers draw
products of combustion through a heat exchanger allowing,
in some instances, common venting with natural draft appli-
ances (i.e. water heaters). All installations must be vented
must be at least as great as the horizontal length of the vent-
ing system.
-
-
tem is as shown:
060
4 inch
4 inch
080
4 inch
4 inch
100
5 inch
4 inch
above may be required or allowed. When an existing fur-
nace is removed from a venting system serving other appli-
ances, the venting system may be too large to properly vent
the remaining attached appliances.
Furnaces are shipped with the induced draft blower dis-
charging from the top of the furnace. (“Top” is as viewed for
single wall pipe can be used to extend the induced draft
the draft inducer may be rotated to discharge from the right
side of the cabinet. When rotating the inducer a chimney
transition bottom kit (part # 4053501S) is needed for prop-
er alignment of the inducer outlet and the vent exit hole in
the side of the cabinet. The inducer may NOT be rotated on
-
-
To rotate the induced draft blower clockwise, you will need
to purchase one (4053501S) chimney transition bottom kit.
1.
2.
pipe, and pressure switch tubing.
3. Remove the round cutout from the right side of the
wrapper.
4. Remove and save the four screws that fasten the
5. Remove and save the three screws that hold the
chimney assembly to the induced draft blower.
6. Remove and save the four screws that fasten the
chimney top to the chimney bottom.
7. Remove the chimney transition bottom from the
transition bottom kit.
8. Install the chimney top with the four screws retained from
step 6 onto the new chimney transition bottom from the
transition bottom kit.
9. Install chimney assembly with the three screws retained
from step 5 onto the induced draft blower.
10. Reinstall the induced draft blower rotating it 90 degrees
four screws retained in step 3. Ensure the gasket located
between the induced draft blower and the collector box
is rotated accordingly.
11. Reconnect the induced draft blower power leads. :
If the wires are not long enough, pull extra wire from the
wire bundle in the blower compartment.
12.
Ensure that all wires and the pressure switch tubing is at
13. Restore power to furnace.
are shipped with the induced draft blow-
er discharging from the top of the furnace. (“Top” as viewed