d. Clamp tube to prevent any condensate leakage.
C.
Condensate Trap Field Drain Attachment
Refer to Condensate Drain section for recommendations and procedures.
D.
Pressure Switch Tubing
The LOWER collector box pressure tube (pink label) is factory connected to the pressure switch for use when furnace is installed in UPFLOW
applications. This tube MUST be disconnected, extended, rerouted, and then reconnected to the pressure switch in HORIZONTAL LEFT
applications.
NOTE:
See Fig. 10 or tube routing label on main furnace door to check for proper connections.
Modify tube as described below.
1. Disconnect collector box pressure tube (pink label) attached to pressure switch.
2. Use smaller diameter tube (factory-supplied in loose parts bag) to extend tube disconnected in item 1.
3. Route extended tube:
a. Behind inducer housing.
b. Between blower shelf and inducer housing.
c. Behind inducer motor bracket.
d. Between inducer motor and pressure switch.
4. Determine appropriate length, cut, and reconnect tube to pressure switch connection labeled COLLECTOR BOX.
E.
Condensate Trap Freeze Protection
Refer to Condensate Drain Protection section for recommendations and procedures.
F.
Construct a Working Platform
Construct working platform where all required furnace clearances are met. (See Fig. 2 and 11 or 12.)
CAUTION: UNIT MAY NOT OPERATE
Failure to follow this caution may result in intermittent unit operation.
The condensate trap MUST be installed below furnace. See Fig. 5 for dimensions. The drain connection to condensate trap must also
be properly sloped to an open drain.
Fig. 10—Horizontal Left Tube Configuration
A00215
CONDENSATE
TRAP
AUXILIARY
"
J
"
BOX
PLUG
CAP
INDUCER HOUSING
DRAIN TUBE (VIOLET)
COLLECTOR BOX
DRAIN TUBE (BLUE)
COLLECTOR BOX TUBE (PINK)
RELOCATE TUBE BETWEEN BLOWER SHELF AND INDUCER HOUSING FOR
040, 060, AND 080 HEATING INPUT FURNACES
COLLECTOR BOX
EXTENSION TUBE
COLLECTOR BOX
DRAIN TUBE
(BLUE AND WHITE STRIPED)
DRAIN TUBE COUPLING
COLLECTOR BOX
TUBE (GREEN)
COLLECTOR
BOX EXTENSION
DRAIN TUBE
—13—
