440 01 1024 01
Specifications are subject to change without notice
23
Trap Connection
“Clamp ears”
Pointed OUT
Preassemble &
insert into furnace
AIR
FLO
W
IN
ON
OF
F
V
E
N
T
Figure 16
Horizontal Left through Top
Relief Tube
Black Rubber
3
/
16
″
ID
Plastic Caps
Yellow or black
Vent Drain
& Clamps
25--24--84
Single Pressure Switch Detail
Dual Pressure Switch
Tee Trap White PVC
(loose parts bag)
Cap and Clamp
Open End
Flexible Tubing Connector
3
/
16
″
OD (Loose Parts Bag)
Drain Tube
Black Rubber
1
/
2
″
ID & Clamps
EXHAUS
T
Alternate Orientation
Field
Supplied Tee
Cut Here
Drain Tube Corrugated
5
/
8
″
ID & Clamps
Cut at straight section
Leave room for clamp
Relief Tube Extension
Black Rubber
3
/
16
″
ID
Cut tp Fit (Loose Parts Bag)
AIRF
LO
W
Coupling & Clamps
(Optional)
INLET
On Some
Models ONLY
Representative drawing only, some models may vary in appearance.
Remove KO before
mounting Trap
Horizontal Left through Top
(See Figure 16)
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
2 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.
Remove the black
1
/
2
″
ID drain tube from the drain tee. Install a
yellow cap and clamp over the open drain port of the drain tee.
Connect the black
1
/
2
″
ID drain tube from the Vent Drain to the trap.
Secure connections with clamps.
Connect the
3
/
16
″
ID relief tube to the middle port on the trap. If an
extension is required, use the
3
/
16
″
OD flexible tubing connector
and the black
3
/
16
″
ID relief tube in the loose parts bag. Cut tube
to length. Secure all connections with clamps.
Cut an appropriate length of 2
″
PVC pipe, long enough to exit the
cabinet and connect the vent drain to either:
•
A standard field supplied 2
″
PVC tee (N9MP1 models), or
•
A 2
″
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.
