Applications; General; Upflow Applications - Carrier 58MCA Installation, Start-Up, And Operating Instructions Manual

BLOWER SHELF
CONDENSATE
TRAP (INSIDE)
ALTERNATE DRAIN
TUBE LOCATION
CONDENSATE TRAP
DRAIN TUBE LOCATION

UPFLOW APPLICATIONS

Improper installation, adjustment, alteration, service, mainte-
nance, or use can cause carbon monoxide poisoning, explo-
sion, fire, electrical shock, or other conditions which may
cause personal injury or property damage. Consult a qualified
installer, service agency, local gas supplier, or your distribu-
tor or branch for information or assistance. The qualified
installer or agency must use only factory-authorized and
listed kits or accessories when modifying this product. Failure
to follow this warning could result in electrical shock, fire,
personal injury, or death.
For accessory installation details, refer to applicable installation
literature.

APPLICATIONS

Step 1—General
Some assembly and modifications are required for furnaces
installed in any of the 4 applications shown in Fig. 1. All drain and
pressure tubes are connected as shown in Fig. 5. See appropriate
application instructions for these procedures.
Step 2—Upflow Applications
An upflow furnace application is where furnace blower is located
below combustion and controls section of furnace, and conditioned
air is discharged upwards.
FURNACE
CONDENSATE
DOOR
TRAP
1 4
FIELD
26
DRAIN
CONN
SIDE VIEW
DOWNFLOW AND ALTERNATE
EXTERNAL UPFLOW APPLICATIONS
SLOT FOR SCREW
HORIZONTAL
APPLICATION
(OPTIONAL)
1 2
1
3 4
1 8
7
3 4
1
7 8
WIRE TIE
GUIDES
(WHEN USED)
FRONT VIEW SIDE VIEW
Fig. 4—Condensate Trap
5
FURNACE
SIDE
7 8
4
1 2 FIELD
1
DRAIN
CONN
FRONT VIEW
1
⁄ OD
4
COLLECTOR BOX TO
TRAP RELIEF PORT
1
⁄ OD
2
INDUCER HOUSING
DRAIN CONNECTION
5
⁄ OD
8
COLLECTOR BOX
DRAIN CONNECTION
SCREW HOLE FOR
UPFLOW OR DOWN-
FLOW APPLICATIONS
(OPTIONAL)
1 4
1
2 ⁄ -IN. PVC OR CPVC
2
CONDENSATE TRAP LOCATION (FACTORY-SHIPPED
ORIENTATION)
The condensate trap is factory installed in the blower shelf and
factory connected for UPFLOW applications. A factory-supplied
tube is used to extend the condensate trap drain connection to the
desired furnace side for field drain attachment. See Condensate
Trap Tubing (Factory-Shipped Orientation) section for drain tube
extension details.
CONDENSATE TRAP TUBING (FACTORY-SHIPPED
ORIENTATION)
NOTE: See Fig. 5 or tube routing label on main furnace door to
confirm location of these tubes.
1. Collector Box Drain, Inducer Housing Drain, Relief Port, and
Pressure Switch Tubes
These tubes should be factory attached to condensate trap and
pressure switch ready for use in UPFLOW applications. These
tubes can be identified by their connection location and also
by a color label on each tube. These tubes are identified as
follows: collector box drain tube (blue label), inducer housing
drain tube (violet label or molded), relief port tube (green
label), and pressure switch tube (pink label).
2. Condensate Trap Drain Tube
The condensate trap drain connection must be extended for
field attachment by doing the following:
a. Determine location of field drain connection. (See Fig. 2 or
5.)
FURNACE
DOOR
FURNACE
SIDE
4
3 4
5
4
1 4
26
3 4
END VIEW FRONT VIEW
HORIZONTAL
APPLICATIONS
3 4
5
A93026