Horizontal Left (Supply-Air Discharge) Applications - Carrier 58MVP Installation, Start-Up, And Operating Instructions Manual

6. Fill unused condenstate trap casing holes with plastic filler
caps (factory-supplied in loose parts bag).
CONDENSATE TRAP TUBING
NOTE: See Fig. 9 or 10 or tube routing label on main furnace
door to check for proper connections.
1. Collector Box Drain Tube
a. Remove factory-installed plug from LOWER collector box
drain tube (blue and white striped label).
b. Install removed clamp and plug into UPPER collector box
drain tube (blue label) which was connected to condensate
trap.
c. Connect LOWER collector box drain connection to con-
densate trap.
(1.) Condensate Trap Located on Left Side of Casing
(a.) Connect LOWER collector box drain tube (blue
and white striped label) to condensate trap. Tube
does not need to be cut.
(b.) Clamp tube to prevent any condensate leakage.
(2.) Condensate Trap Located on Right Side of Casing
(a.) Install drain tube coupling (factory-supplied in
loose parts bag) into collector box drain tube
(blue and white striped label) which was previ-
ously plugged.
(b.) Connect larger diameter drain tube (factory-
supplied in loose parts bag) to drain tube cou-
pling, extending collector box drain tube for
connection to condensate trap.
(c.) Route extended collector box drain tube between
gas valve and inlet housing as shown in Fig. 10.
(d.) Determine appropriate length and cut.
(e.) Connect to condensate trap.
(f.) Clamp tube to prevent any condensate leakage.
2. Inducer Housing Drain Tube
a. Remove factory-installed cap and clamp from LOWER
inducer housing drain connection.
b. Remove and discard UPPER (molded) inducer housing
drain tube which was previously connected to condensate
trap.
c. Install cap and clamp on UPPER inducer housing drain
connection where molded drain tube was removed.
d. Use inducer housing drain tube (violet label and factory-
supplied in loose parts bag) to connect LOWER inducer
housing drain connection to the condensate trap.
e. Connect inducer housing drain connection to condensate
trap.
(1.) Condensate Trap Located on Left Side of Casing
(a.) Determine appropriate length and cut.
(b.) Connect tube to condensate trap.
(c.) Clamp tube to prevent any condensate leakage.
(2.) Condensate Trap Located on Right Side of Casing
(a.) Route inducer housing drain tube (violet label)
directly from inducer housing to condensate trap.
(b.) Determine appropriate length and cut.
(c.) Connect tube to condensate trap.
(d.) Clamp tube to prevent any condensate leakage.
3. Relief Port Tube
Refer to Pressure Switch Tubing section for connection
procedure.
CONDENSATE TRAP FIELD DRAIN ATTACHMENT
Refer to Condensate Drain section for recommendations and
procedures.
PRESSURE SWITCH TUBING
One collector box pressure tube (pink label) is factory connected to
the pressure switch for use when furnace is installed in UPFLOW
or HORIZONTAL LEFT applications. This tube MUST be dis-
connected and used for the condensate trap relief port tube. The
other collector box pressure tube (green label) which was factory
connected to the condensate trap relief port connection MUST be
connected to the pressure switch in DOWNFLOW or HORIZON-
TAL RIGHT applications.
NOTE: See Fig. 9 or 10 or tube routing label on main furnace
door to check for proper connections.
Relocate tubes as described below.
1. Disconnect collector box pressure tube (pink label) attached to
pressure switch.
2. Extend collector box pressure tube (green label) which was
previously connected to condensate trap relief port connection
by splicing to small diameter tube (factory-supplied in loose
parts bag).
3. Connect collector box pressure tube (green label) to pressure
switch connection labeled COLLECTOR BOX.
4. Extend collector box pressure tube (pink label) which was
previously connected to pressure switch by splicing to remain-
ing small diameter tube (factory-supplied in loose parts bag).
5. Route this extended tube (pink label) to condensate trap relief
port connection.
6. Determine appropriate length, cut, and connect tube.
7. Clamp tube to relief port connection.
CONDENSATE TRAP FREEZE PROTECTION
Refer to Condensate Drain Protection section for recommenda-
tions and procedures.
Step 4—Horizontal Left (Supply-Air Discharge)
Applications
A horizontal left furnace application is where furnace blower is
located to the right of combustion and controls section of furnace,
and conditioned air is discharged to the left.
Local codes may require a drain pan under entire furnace and
condensate trap when a condensing furnace is used in an attic
application or over a finished ceiling.
NOTE: In Canada, installations shall be in accordance with
current NSCNGPIC and/or local codes.
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 or 11.
To relocate condensate trap from the blower shelf to desired
location, perform the following:
1. Remove 3 tubes connected to condensate trap.
2. Remove trap from blower shelf by gently pushing tabs inward
and rotating trap.
→
3. Remove casing hole filler cap from casing hole. (See Fig. 2 or
11.)
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