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18
Drain Tube
Corrugated
5
/
8
″
″
(15.9mm) ID &
Clamps
INLET
EXHAUST
IN
ON
OFF
V
E
N
T
Drain Tube
Black Rubber
1
/
2
″
(12.7mm) ID &
Clamps
AIR
FLOW
Street Elbow
1
/
2
″
(12.7mm) CPVC
(Loose parts bag)
Casing Grommet
Black Rubber
″
(15.9mm) ID
(Loose partsbag)
Drain Tee
Drain Connector Black PVC
3
/
4
″
(18.1mm) PVC X
1
/
2
″
(12.7mm) CPVC (Loose
parts bag)
Drain Line Vent Tee
3
/
4
″
(18.1mm) PVC or
1
/
2
″
(12.7mm)
CPVC (Field supplied)
Relief Tube
Black Rubber
3
/
16
″
(4.8mm) ID
Coupling & Clamps
(Optional)
25 --24 --67
Single Pressure Switch
Dual Pressure Switch Detail
Drain Tube Black Rubber
5
/
8
″
(15.9mm) ID &
Clamps, Cutlength to fit (Loose parts bag)
On Some Models
ONLY
Plastic Caps (2)
Yellow or black
Vent Drain
&Clamps
Representative drawing only, some models may vary in appearance.
A07706
Fig. 11 -- Upflow Installations Top Vent
Upflow Installations Top Vent (See Fig. 11)
Remove knockout from the side of the furnace casing where drain
tube will exit.
Install casing grommet [black rubber
5
/
8
″ (15.9mm) ID grommet --
in loose parts bag].
Install the
1
/
2
″ (12.7mm) CPVC street elbow on discharge of trap
Install the black PVC tube connector [
3
/
4
″ (18.1mm) PVC x
1
/
2
″
(12.7mm) CPVC from loose parts bag] as shown in t he illustration
above.
Cut the black drain tube [
5
/
8
″ (15.9mm) 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.
The field supplied
3
/
4
″ (18.1mm) PVC or
1
/
2
″ (12.7mm) CPVC
drain line vent tee must vent outside the furnace cabinet (see
exploded view above).
Note: It is recommended that all PVC piping and fitting
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.
NOTE:“PVC” is used as a genericterm. Pipe and fitting materials used must beacceptable to the localcode officials hav-
ing jurisdiction.
58HDV