International comfort products N9MP1 Installation Instructions Manual page 23

Figure 15
Downflow Right−Side Vent and Trap
Plastic Cap
Yellow or black
Vent Drain
& Clamps
SIDE VIEW
Rotate downward
55 to 105
NOTE: Built-in channel will
be angled 5° to 10° also.
Single Pressure Switch Detail
Downflow Right−Side Vent and Trap
Remove the drain tee if installed.
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 right side of the unit using the two screws provided.
Connect the corrugated drain tube from the transition box to the
trap as shown. If an extension is required, use the black PVC tube
5
connector and the black / " (15.9mm) ID drain tube in the loose
8
parts bag. Cut tube to length. Secure all connections with clamps.
Connect the drain hose from the Vent Drain to the trap. If an
extension is required, use the black
1
coupling, connect a black
1
suitable section of a / " (12.7mm) ID drain tube to make
2
connection from the vent drain to the trap. Secure all connections
with clamps.
Install the vent pipe grommet into the casing
440 01 1024 04
Elbow Tube Black Rubber
, (12.7mm) ID & Clamps
1
/
2
(Loose Parts Bag)
Dual Pressure Switch
Drain Tube Corrugated Black,
, (15.9mm) ID & Clamps
5
/
8
Representative drawing only, some models may vary in appearance.
(See Figure 15)
1
/ " (12.7mm) OD barbed
2
/ " (12.7mm) ID elbow tube and a
2
Specifications are subject to change without notice
Relief Tube
Black Rubber
, (4.8mm) ID
3
/
16
Barbed Coupling
, (12.7mm) OD
1
/
2
(Loose Parts Bag)
Drain Hose
Black Rubber
, (12.7mm) ID
1
/
2
Cut to Fit &
Clamps
On Some
Models
ONLY
Drain Connector Black
, (19.1mm)
3
PVC /
WARNING
4
, (12.7mm)
1
PVC X /
Move Caps to
2
CPVC (Loose parts
top of trap
bag)
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.
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.
Trap Connection
"Clamp ears"
Pointed OUT
Preassemble &
insert into furnace
Coupling & Clamps
(Optional)
2, (50.8mm) PVC
Coupling
Either: The PVC
Drain Tee or a field
supplied 2,
(50.8mm) PVC Tee
Tee Trap White PVC
(loose parts bag)
,
5
Drain Tube) Black Rubber, /
8
(15.9mm) ID Cut to fit & Clamps
(loose parts bag)
25−24−69b
23