440 01 1024 01
Specifications are subject to change without notice
19
INLET
EXHAUST
IN
ON
OFF
VENT
Figure 12
Upflow Installations Vent through Left--Side
Casing Grommet
Black Rubber
5
/
8
″
ID
(Loose parts bag)
Drain Connector Black PVC
3
/
4
″
PVC X
1
/
2
″
CPVC
(Loose parts bag)
Drain Line Vent Tee
3
/
4
″
PVC or
1
/
2
″
CPVC (Field supplied)
Drain Tube
Black Rubber
1
/
2
″
ID & Clamps
Coupling & Clamps
(Optional)
25--24--81
Single Pressure
Switch
Dual Pressure Switch Detail
Tee Trap White PVC
(loose parts bag)
2
″
PVC Coupling
On Some Models
ONLY
Plastic Cap
Yellow or black
Vent Drain
& Clamps
Rotate downward
5
°
to 10
°
NOTE:
Built--in channel will
be angled 5
°
to 10
°
also.
SIDE VIEW
Either: The PVC
Drain Tee or a field
supplied 2
″
PVC Tee
AIR
FL
O
W
AIR
FL
O
W
Drain Tube
Corrugated
5
/
8
″
ID & Clamps
Relief Tube
Black Rubber
3
/
16
″
ID
Representative drawing only, some models may vary in appearance.
Upflow Installations Vent through Left--Side
(See Figure 12)
Remove drain tee from inducer discharge and remove black drain
tube (
1
/
2
″
ID) from bottom of drain tee. (N9MPD and *9MPD
models only)
Install Vent Pipe grommet in side of casing.
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 of tee.
Remove knockout from the side of the furnace casing where drain
tube will exit.
Install the
1
/
2
″
CPVC street elbow on discharge of trap
Install the black PVC drain connector (
3
/
4
″
PVC x
1
/
2
″
CPVC from
loose parts bag) as shown in the illustration above.
Cut the black drain tube (
5
/
8
″
ID -- in loose parts bag) to length to
fit between trap and tube connector through grommet.
Clamp both ends of the drain tube using clamps provided.
Glue the CPVC street elbow to the trap using appropriate cleaner
and solvent cement.
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 internal 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.