Downflow Left-Side Vent and Trap
/ Plastic Cap
Yelloworblack
Coupling&Clamps
(Optional)\
/
Vent Drain
&Clamps Either:ThePVC
DrainTeeorafield
supplied2"
(50.8mm)PVC_ee
Single Pressure Switch Detail "\
TeeTrapWhitePVC..... INLET* ':'/
(loosepartsbag)
_| ElbowTubeBlackRubber1/2'_.
//"
(12,7mm)ID&Clamps(Loose
PartsBag)
WARNING
MoveCapsto
topof trap
DrainTube Black,5/8"(15.9mm)ID
CorrugatedCut atstraightsection
I
Leaveroomforclamp "Cut Here
2" (50.8mm)PVC
//Coupling
/ DrainTube
Black Rubber 1/2"
(12.7mm)ID& Clamps
/
/ Dual Pressure Switch
\
BarbedCoupling 1/2"(12.7mm)
OD (loosepartsbag)
SIDEVIEW
-°l°_rRotate downward
5° to 10°
NOT inchannelwill
be angled5° to 10" also.
ReliefTubeBlackRub-
. ._ ber3/16" (4.8mm)ID
iOn SomeModels
_,f-_ .... ONLY
INLET _'i _
FlexibleTubingConnector,3/16"
(4.8mm)OD (loosepartsbag)
ReliefTube,ExtensionBlack
Rubber,3/16" (4.8mm)ID Cutto
fit (loosepartsbag)
TrapConnection
"Clampears"
/ PointedOUT
Preassemble&
insert intofurnace
25-24-69
* Combustionair pipe (either side) for N9MP2, N9MPD & *9MPD downflow installation
Representative drawing only, some models may vary in appearance.
Downflow Left-Side Vent and Trap (SeeFigure14)
Remove the inducer mounting screws, rotate the inducer 180 °
and retighten the inducer screws to 20" pounds torque.
Disconnect the hoses from the trap assembly, and remove trap
and trap mounting bracket from the blower compartment. Using
cover plate and gasket provided in the loose parts bag, cover the
hole from the burner compartment to the blower compartment and
secure with screws.
Move the caps to the top of the trap and mount the trap externally
to the left side of the unit using the two screws provided.
Cut the 5/8" (15.9mm) ID corrugated hose as shown above and
fasten the 90° bend end to the trap and fasten the straight end to
the transition drain. Secure both connections with clamps.
Reconnect the 1/2" (12.7mm) ID drain hose from the vent drain to
the trap and secure with a clamp.. In some cases, additional
length will be required for this hose. Use the Black plastic 1/2"
(12.7mm) OD barbed coupling and a suitable section of 1/2"
(12.7mm) ID hose to make the connection. Secure all connections
with clamps
Connect the 3/16" (4.8mm) ID relief tube from the small port on the
trap to the top port of the transition as shown in the picture. In some
cases, additional hose length will be needed. Use the clear plastic
3/16" (4.8mm) OD flexible tubing connector and a suitable length
of extra 3/18" (4.8mm) ID hose to make this connection.
Install the vent pipe grommet into the casing
Cut an appropriate length of 2" (50.8mm) PVC pipe long, enough
to exit the cabinet and connect the vent drain to either:
• A standard field supplied 2" (50.8mm) PVC tee (N9MP1 or
N9MP2), or
• A 2" (50.8mm) PVC coupling fastened onto the drain tee
(N9MPD and *9MPD models)
Install tee trap into bottom section of tee.
Remove knockout from the side of the furnace casing where drain
tube will exit.
Connect the tee trap and the main drain line exiting the casing as
shown in Figure 20.
Note: It is recommended that all PVC piping and fitting
connections be fit up and inspected before final cementing. Both
the external trap and the external tee trap must be primed
before operation, Verify all condensate drain connections are
securely clamped. A coupling and clamps (in loose part bag) may
be installed as shown for future servicing of the vent system.
22
Specifications are subject to change without notice
44001 102404
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