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STEP 4 -- ELECTRICAL (CONTINUED) -- High Voltage and Field Control Wiring
The following illustration provide an example of control wiring connections when using standard thermostat.
ROUTING HIGH VOLTAGE, GROUND AND CONTROL WIRING
HIGH VOLTAGE / GROUND WIRES
Any excess high voltage field wiring should be
trimmed and secured away from any low voltage field
wiring. To facilitate a conduit, a cutout is located in the
bottom of the control panel. Connect conduit to the
control panel using a proper conduit fitting.
NOTE - Wire tie provides low voltage control wire strain
relief and maintains separation of field-installed low and
high voltage circuits.
NOTE - For proper voltages, select thermostat wire
(control wires) gauge per table above.
NOTE - Do not bundle any excess 24VAC control
wires inside control panel.
Install low voltage wiring from outdoor to indoor unit
and from thermostat to indoor unit as illustrated.
A - Run 24VAC control wires through hole with grommet
and secure with provided wire tie.
B - Make 24VAC thermostat wire connections. Locate
the two wires from the contactor and make
connection using field-provided wire nuts:
●
Yellow to Y1
●
Black to C (common)
14ACX
14ACX
NOTE - Refer to furnace, blower coil and accessory instructions for
additional wiring configurations with other optional controls.
24VAC Control Wiring Diagrams (Field Installed)
COMFORTSENSE
ML180
5500 STAT
14ACX
CBX25
COMFORTSENSE
5500 STAT
14ACX
FIELD CONTROL WIRING
THERMOSTAT
POWER
R
HEAT
W1
COOLING
Y
INDOOR BLOWER
G
COMMON
C
WIRE RUN LENGTH
LESS THAN 100' (30 METERS)
MORE THAN 100' (30 METERS) 16
FIGURE 13
COMFORTSENSE
EL280, EL295, EL296
7500 STAT
COMFORTSENSE
COMFORTSENSE
5500 STAT
5500 STAT
14ACX
Air handler shipped with jumpers installed between W1 and W2
1
and W2 and W3.
R connection required for air conditioner with LSOM. Resistor kit
2
(CAT #47W97) required when connecting ComfortSense 7500
with LSOM 2.
L connection wired on units with LSOM.
3
FIGURE 14
Page 12
INDOOR UNIT
R
W
YELLOW
OUTDOOR UNIT
Y1
Y
G
BLACK
C
C
AWG# INSULATION TYPE
18
TEMPERATURE RATING
35ºC MINIMUM.
COMFORTSENSE
SLP98, SL28UH, SL280DF
7500 STAT
14ACX
CBX40UHV
COMFORTSENSE
7500 STAT
2
14ACX
1
RED
3
BROWN
BLUE
ML14XC1 SERIES
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