Carrier 58MVP Installation, Start-Up, And Operating Instructions Manual page 24

MODEL PLUG
CONNECTOR
SW1 SETUP
SWITCHES AND
BLOWER OFF-
DELAY
AIR CONDITIONING
(A/C) AIRFLOW
SETUP SWITCHES
24-V THERMOSTAT
TERMINALS
STATUS AND COMM
LED LIGHTS
3-AMP FUSE
TRANSFORMER 24-VAC
CONNECTIONS
115-VAC (L2) NEUTRAL
CONNECTIONS
FURNACE
NOT IN
HORIZONTAL
SECTION
Fig. 26—Combustion-Air and Vent Pipe Diameter
Transition Location and Elbow Configuration
d. Insert assembled combustion-air inlet pipe into intake
housing.
e. Make sure elbow is oriented in an acceptable direction and
that the minimum clearance of 3 in. is observed. (See Fig.
27.)
f. Drill a 1/8-in. hole in 2-in. combustion-air inlet pipe using
hole in intake housing as a guide.
COMMUNICATION CONTINUOUS FAN
CONNECTOR (CF) AIRFLOW
SETUP SWITCHES
(115-VAC 1.0 AMP MAX.)
PL1 Ð LOW VOLTAGE MAIN
HARNESS CONNECTOR
Fig. 25—Control Center
PIPE DIAMETER
TRANSITION IN
VERTICAL SECTION
A93034
FUTURE
APPLICATIONS
EAC-1 TERMINAL
115-VAC (L1) LINE
VOLTAGE CONNECTIONS
g. Install a field-supplied No. 6 or No. 8 sheet metal screw
into combustion-air pipe.
h. Install casing hole filler cap (factory-supplied) in loose
parts bag) in unused combustion-air pipe casing hole.
COMBUSTION-AIR INTAKE HOUSING PLUG
FITTING
The combustion-air intake plug fitting must be installed in
unused combustion-air intake housing. This fitting must be
attached by using RTV sealant, or by drilling a 1/8-in. hole in
fitting, using hole in intake housing as a guide. Install a
field-supplied No. 6 or No. 8 sheet metal screw.
NOTE: DO NOT OVERTIGHTEN SCREW. Breakage of intake
housing or fitting may cause air leakage to occur.
A plugged drain connection has been provided on this fitting
for use when moisture is found in combustion-air intake pipe
and combustion box. If use of this drain connection is desired,
drill out fitting's tap plug with a 3/16-in. drill and connect a
field-supplied 3/8-in. tube. This tube should be routed to open
condensate drain for furnace and A/C (if used), and should be
trapped. (See Fig. 29.)
24
HUMIDIFIER
TERMINAL (24-VAC
0.5 AMP MAX.
ACRDJ Ð AIR
CONDITIONING
RELAY DISABLE
JUMPER
FLASH
UPGRADE
CONNECTOR
(FACTORY
ONLY)
PL3 Ð ECM BLOWER
HARNESS
CONNECTOR
PL2 Ð HOT SURFACE
IGNITER & INDUCER
MOTOR CONNECTOR
A02278