Single Stage Multi Position Furnace
Service Manual
24
440 08 2001 02
Rotate
downward
20
°
to 30
°
Figure 33
Upflow Installations (Dual Certified *9MPD(A1) Models)
Supply Air
Ex
ha
us
t
Inle
t
Return
Air
Vent Pipe
Vent Pipe Grommet
Vent Fitting & Clamps
Rubber
Plug
Drain Line
90
°°°°
Elbow
Plastic Caps
Rubber Coupling
& Clamps
5
/
8
²²²²
Hose &
Clamps
Combustion Air
Pipe (optional)
Air Intake
Coupling
Combustion
Blower
Pressure Switch
Hose, Transition
Pressure Switch,
Transition
3
/
4
²²²²
Hose
& Clamps
Condensate Trap
& Gasket
(Left or Right Side)
Plastic Caps
Gas Pipe Grommet
Transition
Box
25- 23- 53
Combustion
Blower
Mounting
Screws (4)
Pressure Switch
Hose, Blower
Pressure Switch,
Blower
clamp
Rubber
Hose
Rubber
Hose
clamp
Rigid
Plastic
Drain
Tube
Ex
ha
us
t
Inle
t
Supply Air
Return
Air
DRAIN SIDE VIEW
Rigid Plastic
Drain Tube
RIGHT Side Venting
LEFT Side Venting
Vent Drain
Upflow Installations -
(Dual Certified *9MPD) (See Figure 33)
Mount the condensate drain trap in a vertical position to either the
left or right side of the furnace using the two screws and gasket that
are provided. If needed, remove the hole plugs from the furnace
side panel and relocate to the open set of holes in the opposite side
panel. Drill two
7
/
64
²
diameter holes in the casing using the conden-
sate trap as the template.
Ensure that the vent fitting and the 90
°
elbow is securely attached to
the combustion blower using the rubber coupling and clamps.
Plug the right drain stub of the vent fitting with the rubber plug. Use a
blunt pointed screwdriver to push the plug into the stub.
For left side venting, remove vent fitting assembly from combustion
blower. Remove 90
°
elbow and rubber tubing from the vent fitting by
loosening the clamp on the vent fitting. Securely attach vent fitting to
combustion blower.
NOTE:
The vent fitting MUST be installed with the airflow marking
arrow pointed toward the vent pipe, with the drain stub at a 20
°
to 30
°
downward slope.
This configuration allows left side venting from the furnace. If right
side venting is required, the combustion blower must be relocated
on the plastic transition box. Remove the four(4) screws that secure
the blower to the transition. Rotate the blower 180
°
and secure with
the four(4) screws. Use caution to not over tighten the screws to pre-
vent stripping out of the plastic mounting holes.
Plug the upper drain stub on the vent fitting with the rubber plug. Use
a blunt pointed screwdriver to push the plug into the stub.
Route the hose to the large drain stub on the condensate trap. Cut
off excess hose and discard. Connect the hose with the 90
°
bend to
the drain stub on the trap and secure with a
3
/
4
²
clamp.
For left side mounted condensate trap, connect the
3
/
4
²
OD rubber
hose to the drain stub on the bottom of the plastic transition box and
secure with a
3
/
4
²
clamp.
For right side mounted condensate trap,
the rigid plastic drain
tube MUST be used. Cut two 2
²
long sections from the
3
/
4
²
OD rub-
ber hose. Connect the plastic drain tube to the drain stub on the bot-
tom of the plastic transition box and to the stub on the condensate
trap using the two hose sections and
3
/
4
²
clamps.
NOTE:
The support leg on the plastic drain tube MUST be posi-
tioned on the blower partition.
Connect the
5
/
8
²
OD rubber hose with the 90
°
bend to the left drain
stub on the vent fitting and secure with a
5
/
8
²
clamp.
Route the hose to the small drain stub on the condensate trap. Cut
off excess hose and discard. Connect the hose to the drain stub on
the trap and secure with a
5
/
8
²
clamp.
NOTE: Ensure hoses maintain a downward slope to the conden-
sate trap with no kinking or binding for proper condensate drainage.
