International comfort products N9MP1 Installation Instructions Manual page 24

Figure 16
Horizontal Left through Top
Vent Drain
Plastic Caps
& Clamps
Yellow or black
Alternate Orientation
Field
Supplied Tee
Tee Trap White PVC
(loose parts bag)
Horizontal Left through Top
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.
Remove knockout from the side of the furnace casing where drain
tube will exit.
Mount the trap externally to the bottom side of the unit using the
two screws provided in the location shown.
Cut the corrugated tube as shown in the illustration above.
Connect the corrugated hose from the transition to the trap.
Secure connections with clamps.
1
Remove the black / " (12.7mm) ID drain tube from the drain tee.
2
Install a yellow cap and clamp over the open drain port of the drain
tee.
1
Connect the black / " (12.7mm) ID drain tube from the Vent Drain
2
to the trap. Secure connections with clamps.
3
Connect the / " (4.8mm) ID relief tube to the middle port on the
16
trap. If an extension is required, use the
24
Single Pressure Switch Detail
Dual Pressure Switch
Coupling & Clamps
(Optional)
Cap and Clamp
Open End
Representative drawing only, some models may vary in appearance.
(See Figure 16)
3
/ " (4.8mm) OD flexible
16
Specifications are subject to change without notice
Relief Tube Black Rubber
, (4.8mm) ID
3
/
16
Flexible tubing connector
3
/
16
Parts Bag)
Relief Tube Extension
Black Rubber
Cut to Fit (Loose Parts Bag)
Drain Tube Corrugated
, (15.9mm) ID & Clamps
5
/
8
Remove KO before
mounting Trap
Drain Tube
Black Rubber
, (12.7mm) ID
1
/
2
& Clamps
Leave room for clamp
tubing connector and the black
loose parts bag. Cut tube to length. Secure all connections with
clamps.
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 models), or
• A 2" (50.8mm) PVC coupling fastened onto the drain tee
(N9MPD and *9MPD models)
Install tee trap into bottom section of tee.
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.
Trap Connection
Preassemble &
insert into furnace
, (4.8mm) OD (Loose
, (4.8mm) ID
3
/
16
Cut at straight section
Cut Here
3
/ " (4.8mm) ID relief tube in the
16
"Clamp ears"
Pointed OUT
25−24−70
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