INSTALLATION INSTRUCTIONS
Gas Furnace: (F/G)9MVE
12
440 01 4401 02
Specifications subject to change without notice.
Condensate Trap
−
Upflow Orientation
When the furnace is installed in the upflow position, it is not
necessary to relocate the condensate trap or associated
tubing. Refer to
information. Refer to Condensate Drain section for information
how to install the condensate drain.
Condensate Trap
−
Downflow
Orientation
When the furnace is installed in the downflow position, the
condensate trap will be initially located at the upper left corner
of the collector box, as received from the factory. See the top
. When the furnace is installed in the
downflow orientation, the condensate trap must be relocated
for proper condensate drainage. See the bottom image in
To Relocate the Condensate Trap:
Orient the furnace in the downflow position.
shows the condensate trap and tubing before and
to begin the trap conversion.
Refer to Condensate Drain section for information how to install
the condensate drain.
Figure 8
Upflow Trap Configuration
Condensate Trap
Relief Port
Collector Box
Plugs
Pressure Switch
Port
Condensate Trap
Outlet
Condensate Trap
Relief Port
Collector Box
Plug
Vent Elbow
Vent Elbow Clamp
Vent Pipe Clamp
UPFLOW TRAP CONFIGURATION
1 & 2 Stage Units
A11307
Representative drawing only, some models may vary in appearance.
Figure 9
Unconverted Factory Configuration as viewed in the Downflow Orientation
A11587LA
Remove relief tube from relief
port on condensate trap.
Remove the screw
that secures the trap
to the collector box and
remove trap.
Loosen clamp on inlet
to vent elbow.
Remove pressure switch tube from
front pressure switch and discard. A
new tube is shipped in the loose parts
bag.
Remove tube from relief port.
Remove middle and bottom
plugs. DO NOT DISCARD.
Representative drawing only, some models may vary in appearance.
