International comfort products N9MP1 Installation Instructions Manual page 25

Figure 17 Horizontal Left−Side Vent
Alternate Orientation
Field
Supplied Tee
Tee Trap White PVC
(loose parts bag)
On Some
Models ONLY
Trap Connection
"Clamp ears"
Pointed OUT
Preassemble &
insert into furnace
Horizontal Left−Side Vent
Remove the drain tee from the Vent Drain if installed (N9MPD and
*9MPD models only)
°
Rotate the inducer 180 for a side vent after loosening the 4
inducer attachment screws. Reinstall 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.
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
Connect the black / " (12.7mm) ID drain tube from the Vent Drain
2
to the trap. If an extension is required, use the black
flexible tubing connector and the black
in the loose parts bag. Cut tube to length. Secure connections
with clamps.
440 01 1024 04
Single Pressure Switch Detail
Level or Sloped towards Tee
Dual Pressure Switch
Relief Tube Black Rub­
, (4.8mm) ID
3
ber /
16
Flexible Tube Connector
(4.8mm) OD (Loose Parts Bag)
Relief Tubing Extension
3
Black Rubber
Cut to Fit (Loose Parts Bag)
Representative drawing only, some models may vary in appearance.
(See Figure 17)
1
/ " OD
2
1
/ " (12.7mm) ID drain tube
2
Specifications are subject to change without notice
Yellow or black
Plastic Cap
Elbow Tube Black Rubber
AIR FLOW
ID & Clamps (Loose Parts Bag)
Barbed Coupling
(Loose Parts Bag)
Drain Tube Black Rubber
, (12.7mm) ID & Clamps
1
/
2
Drain Tube Corrugated
, (15.9mm) ID & Clamps
5
/
8
,
3
/
16
, (4.8mm) ID
/
16
3
Connect the / " (4.8mm) ID relief tube to the middle port on the
16
trap. If an extension is required, use the
tubing connector and the black
loose parts bag. Cut tube to length.
Cut an appropriate length of 2" (50.8mm) PVC pipe, fittings and
extension 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.
Important: The pipe to the tee trap must be level or sloping towards
the tee trap
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.
Vent Drain
& Clamps
, (12.7mm)
1
/
2
, (12.7mm) OD
1
/
2
Cut at straight section
Leave room for clamp
Cut Here
25−24−70a
3
/ " (4.8mm) OD flexible
16
3
/ " (4.8mm) ID relief tube in the
16
25