International comfort products C9MVX Installation Instructions Manual page 20

Figure 11 Upflow Installations Top Vent
Plastic Caps (2)
Yellow or black
Vent Drain
& Clamps
Dual Pressure Switch Detail
Drain Connector Black PVC
, (18.1mm) PVC X
3
/
4
(12.7mm) CPVC (Loose
parts bag)
Casing Grommet
Black Rubber
, (15.9mm) ID
5
/
8
(Loose parts bag)
Upflow Installations Top Vent
Remove knockout from the side of the furnace casing where drain
tube will exit.
Install casing grommet [black rubber
in loose parts bag].
1
Install the / " (12.7mm) CPVC street elbow on discharge of trap
2
Install the black PVC tube connector [
(12.7mm) CPVC from loose parts bag] as shown in the illustration
above.
5
Cut the black drain tube [ / " (15.9mm) ID − in loose parts bag] to
8
length to fit between trap and tube connector through grommet.
Clamp both ends of the drain tube using clamps provided.
NOTE: "PVC" is used as a generic term. Pipe and fitting materials used must be acceptable to the local code officials having
jurisdiction.
20
Coupling & Clamps
(Optional)
Drain Tee
Drain Tube
Black Rubber
, (12.7mm) ID &
1
/
2
Clamps
Drain Tube
Corrugated
, (15.9mm) ID &
5
/
8
Clamps
,
1
/
2
,
3
Drain Line Vent Tee /
4
, (12.7mm)
1
(18.1mm) PVC or /
2
CPVC (Field supplied)
Representative drawing only, some models may vary in appearance.
(See Figure 11)
5
/ " (15.9mm) ID grommet −
8
3
/ " (18.1mm) PVC x
4
Specifications are subject to change without notice.
V E
NT
ON
OFF
Drain Tube Black Rubber
Clamps, Cut length to fit (Loose parts bag)
Glue the CPVC street elbow to the trap using appropriate cleaner
and solvent cement.
3
The field supplied
drain line vent tee must vent outside the furnace cabinet (see
exploded view above).
Note: It is recommended that all PVC piping and fitting
1
/ "
2
connections be fit up and inspected before final cementing. 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.
On Some Models
ONLY
Single Pressure Switch
Relief Tube
,
3
Black Rubber /
16
(4.8mm) ID
Street Elbow
, (12.7mm) CPVC
1
/
2
(Loose parts bag)
, (15.9mm) ID &
5
/
8
1
/ " (18.1mm) PVC or / " (12.7mm) CPVC
4 2
25−24−67
440 01 2024 04