b. Use inducer housing drain extension tube (violet label
and factory-supplied in loose parts bag) to connect
LOWER inducer housing drain connection to the con-
densate trap.
c. Determine appropriate length, cut, and connect tube.
d. Clamp tube to prevent any condensate leakage.
3. Relief Port Tube
a. Connect relief port tube (green label) to condensate trap.
b. Use small diameter tube (factory-supplied in loose parts
bag) to extend this tube if required.
c. Determine appropriate length, cut, and connect tube.
E.
Condensate Trap Field Drain Attachment
Refer to Condensate Drain section for recommendations and
procedures.
F.
Pressure Switch Tubing
The LOWER collector box pressure tube (pink label) is factory
connected to the pressure switch and should not require any
modification.
NOTE:
See Fig. 5 or 6 or tube routing label on main furnace door
to check for proper connections.
G.
Upper Collector Box and Inducer Housing (Unused)
Drain Connections
UPPER COLLECTOR BOX DRAIN CONNECTION
Attached to the UPPER collector box drain connection is a
factory-installed corrugated, plugged tube (blue and white striped
label). This tube is plugged to prevent condensate leakage in this
application. Ensure this tube is plugged.
NOTE:
See Fig. 5 or 6 or tube routing label on main furnace door
to check for proper connections.
UPPER INDUCER HOUSING DRAIN CONNECTION
Attached to the UPPER (unused) inducer housing drain connection
is a cap and clamp. This cap is used to prevent condensate leakage
in this application. Ensure this connection is capped.
NOTE:
See Fig. 5 or 6 or tube routing label on main furnace door
to check for proper connections.
H.
Condensate Trap Freeze Protection
Refer to Condensate Drain Protection section for recommenda-
tions and procedures.
III.
DOWNFLOW APPLICATIONS
A downflow furnace application is where furnace blower is located
above combustion and controls section of furnace and conditioned
air is discharged downwards.
Fig. 5—Factory-Shipped Upflow Tube Configuration
(Shown With Blower Access Panel Removed)
A94213
COLLECTOR BOX
TUBE (PINK)
COLLECTOR BOX
TUBE (GREEN)
INDUCER HOUSING
(MOLDED) DRAIN
TUBE (BEHIND
COLLECTOR BOX
DRAIN TUBE)
COLLECTOR BOX
DRAIN TUBE (BLUE)
FIELD-INSTALLED
FACTORY-SUPPLIED
DRAIN TUBE
COUPLING (LEFT
DRAIN OPTION)
FIELD-INSTALLED
FACTORY-SUPPLIED
DRAIN TUBE
FIELD-INSTALLED
FACTORY-SUPPLIED
DRAIN TUBE
COUPLING (RIGHT
DRAIN OPTION)
CAP
COLLECTOR BOX
DRAIN TUBE (BLUE
& WHITE STRIPED)
PLUG
FIELD-INSTALLED
FACTORY-SUPPLIED
1
⁄
2
-IN. CPVC STREET
ELBOWS (2) FOR
LEFT DRAIN OPTION
CONDENSATE
TRAP
Fig. 6—Alternate Upflow Tube Configuration and Trap
Location
A94214
COLLECTOR BOX
TUBE (PINK)
CONDENSATE
TRAP
COLLECTOR BOX
TUBE (GREEN)
COLLECTOR BOX
DRAIN TUBE (GREEN)
INDUCER
HOUSING
DRAIN TUBE
(VIOLET)
CAP
COLLECTOR BOX
DRAIN TUBE (BLUE
& WHITE STRIPED)
PLUG
—6—
