GM9S96 Service Manual
SYSTEM OPERATION
12
AIR
DISCHARGE
Bottom
Return
Duct
Connection
Side
Return
Duct
Connection
Side
Return
Duct
Connection
AIR
DISCHARGE
Bottom
Return
Duct
Connection
AIR
DISCHARGE
AIR
DISCHARGE
Bottom
Return
Duct
Connection
Bottom
Return
Duct
Connection
Alternate “vertical” piping connections can not be
installed with supply discharging to the left. In this case, use
Furnaces have provisions allowing for electrical and gas line
connections through either side panel. In horizontal applica-
tions the connections can be made either through the “top”
or “bottom” of the furnace.
A drain pan must be provided if the furnace is installed above
a conditioned area. The drain pan must cover the entire area
under the furnace (and air conditioning coil if applicable).
If the drain trap and drain line will be exposed to temperatures
near or below freezing, adequate measures must be taken to
prevent condensate from freezing. The use of insu-
lation and/or heat tape is recommended. Failure to provide
proper condensate drainage can result in property damage.
WARNING
-
-
ural gas at standard altitude. Propane gas installations re-
-
High altitude installations may require both a pressure
-
sary to compensate for the natural reduction in the density
of both the gas fuel and the combustion air at higher altitude.
Refer to the Accessories Charts in this manual or prod-
manufacturer’s kits for propane gas and/or high altitude in-
stallations. The indicated kits must be used to insure safe
and proper furnace operation. All conversions must be per-
AIR PIPE
WARNING
WARNING
This manual will refer to the pipe that discharges products of
The pipe that supplies air for combustion to the furnace will
be referred to as the “intake” pipe or “combustion air” pipe.
-
cy by extracting almost all of the heat from the products of
combustion and cooling them to the point where condensa-
-
perature and water condensation requirements, PVC pipe is
used as venting material.
This furnace must not be connected to Type B, BW, or L
vent or vent connector, and must not be vented into any
portion of a factory built or masonry chimney except when
used as a pathway for PVC as described later in this section.
common vent this appliance with another appliance
or use a vent which is used by a solid fuel appliance.