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7
24-V THERMOSTAT
TERMINALS
PL2 – HOT SURFACE
IGNITER & INDUCER
MOTOR CONNECTOR
115-VAC (L2) NEUTRAL
CONNECTIONS
115-VAC (L1) LINE
VOLTAGE CONNECTIONS
EAC-1 TERMINAL
(115 -VAC 1.0 AMP MAX.)
PL1 – LOW VOLTAGE MAIN
HARNESS CONNECTOR
PL3 – ECM BLOWER
HARNESS
CONNECTOR
TRANSFORMER 24-VAC
CONNECTIONS
3-AMP FUSE
STATUS AND COMM
LED LIGHTS
SW1 SETUP
SWITCHES AND
BLOWER OFF-
DELAY
MODEL PLUG
CONNECTOR
AIR CONDITIONING
(A/C) AIRFLOW
SETUP SWITCHES
USER INTERFACE
OR ADVANCED
PRODUCT
MONITOR
CONNECTOR
CONTINUOUS FAN
(CF) AIRFLOW
SETUP SWITCHES
OAT
CONNECTOR
HUMIDIFIER
TERMINAL (24-VAC
0.5 AMP MAX.
ACRDJ – AIR
CONDITIONING
RELAY DISABLE
JUMPER
FLASH
UPGRADE
CONNECTOR
(FACTORY
ONLY)
SW4 SETUP
SWITCHES
BOARD SERIAL
NUMBER
EXAMPLE:
V12 HK42FZ022 3407
SOFTWARE
VERSION
NUMBER
DATE
CODE
PART
NUMBER
MEDIUM-HEAT
ADJUSTMENT
(UNDER CAP)
INLET
PRESSURE
TAP
ON/OFF
SWITCH
HIGH-HEAT
ADJUSTMENT
(UNDER CAP)
BURNER
ENCLOSURE
REFFERENCE
TAP
LOW-HEAT
ADJUSTMENT
(UNDER CAP)
MANIFOLD
PRESSURE
TAP
A07422
A92505
A07280
CONTROL CENTER
HEAT EXCHANGERS
GAS VALVE
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Concentric Vent Kit
A93086
A concentric vent kit allows vent and combustion--air pipes to
terminate through a single exit in a roof or side wall. One pipe
runs inside the other allowing venting through the inner pipe and
combustion air to be drawn in through the outer pipe.
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Downflow Subbase
A88202
One base fits all furnace sizes. The base is designed to be installed
between the furnace and a combustible floor when no coil box is
used or when a coil box other than a Carrier cased coil is used. It is
A.G.A. design certified for use with Carrier 58MVC furnaces when
installed in downflow applications.
58MV
C