Condensate Trap Field Drain Attachment; Pressure Switch Tubing; Upper Collector Box And Inducer Housing (Unused) Drain Connections; Condensate Trap Freeze Protection - Carrier 58MTA Installation, Start-Up, And Operating Instructions Manual

PLUG
CAP
COLLECTOR BOX
DRAIN TUBE (BLUE
& WHITE STRIPED)
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
⁄
1
-IN. CPVC STREET
2
ELBOWS (2) FOR
LEFT DRAIN OPTION
Fig. 6—Factory-Shipped Upflow Tube
Configuration
(Shown with Blower Access Panel Removed)
2. Inducer Housing Drain Tube
a. Remove and discard LOWER (molded) inducer housing
drain tube which was previously connected to condensate
trap.
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 condensate 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. Extend this tube (if required) by splicing to small diameter
tube (factory-supplied in loose parts bag).
c. Determine appropriate length, cut, and connect tube.

CONDENSATE TRAP FIELD DRAIN ATTACHMENT

Refer to Condensate Drain section for recommendations and
procedures.

PRESSURE SWITCH TUBING

The LOWER collector box pressure tube (pink label) is factory
connected to the High Pressure Switch and should not require any
modification.
CONDENSATE
TRAP
FIELD-INSTALLED
FACTORY-SUPPLIED
DRAIN TUBE
COUPLING (RIGHT
DRAIN OPTION)
A01030
PLUG
CAP
COLLECTOR BOX
DRAIN TUBE (BLUE
& WHITE STRIPED)
COLLECTOR BOX
TUBE (PINK)
COLLECTOR BOX
TUBE (GREEN)
COLLECTOR BOX
DRAIN TUBE (BLUE)
CONDENSATE
TRAP
INDUCER
HOUSING
DRAIN TUBE
(VIOLET)
Fig. 7—Alternate Upflow Configuration and Trap
NOTE: See Fig. 6 or 7 or tube routing label on main furnace door
to check for proper connections.
UPPER COLLECTOR BOX AND INDUCER HOUSING
(UNUSED) DRAIN CONNECTIONS
1. 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. 6 or 7 or tube routing label on main furnace door
to check for proper connections.
2. 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. 6 or 7 or tube routing label on main furnace door
to check for proper connections.

CONDENSATE TRAP FREEZE PROTECTION

Refer to Condensate Drain Protection section for recommenda-
tions and procedures.
Step 3—Downflow Applications
In a downflow furnace application, the blower is located above the
burner section, and conditioned air is discharged downwards.

CONDENSATE TRAP LOCATION

The condensate trap must be removed from the factory-installed
blower shelf location and relocated in selected application location
as shown in Fig. 2, 8, or 9.
To relocate condensate trap from the blower shelf to desired
location, perform the following:
1. Remove 3 tubes connected to condensate trap.
8
Location
A01031