Page 12
A. Run 24VAC control wires through cutout with grommet.
B. Run 24VAC control wires through wire tie.
C. Make 24VAC control wire connections using field-provided wire
nuts.
D. Tighten wire tie to security 24V control wiring.
HIGH VOLTAGE FIELD WIRING
LOW VOLTAGE (24V) FIELD WIRING
FACTORY WIRING
CUTOUT WITH
GROMMET
NOTE - FOR PROPER VOLTAGES, SELECT THERMOSTAT WIRE (CONTROL WIRES)
GAUGE PER TABLE ABOVE.
WIRE RUN LENGTHAWG# INSULATION TYPE
LESS THAN 100' (30 METERS) 18 TEMPERATURE RATING
MORE THAN 100' (30 METERS) 16 35ºC MINIMUM.
WIRE NUTS
BLACK
24V CONTROL
WIRES
YELLOW
TIGHTEN
WIRE TIE
UNIT LOW VOLTAGE CONNECTIONS
NOTE - DO NOT BUNDLE ANY EXCESS 24VAC CONTROL WIRES INSIDE CONTROL
BOX.
NOTE - WIRE TIE PROVIDES LOW VOLTAGE WIRE STRAIN RELIEF AND MAINTAINS
SEPARATION OF FIELD-INSTALLED LOW-AND HIGH-VOLTAGE CIRCUITS.
A
B
C
D
BLUE
FIGURE 13
NOTE - Refer to furnace, blower coil and accessory instructions for
additional wiring configurations with other optional controls.
24VAC Control Wiring Diagrams (Field Installed)
ML18XC2
EL280, EL295, EL296
SLP98, SL28UH, SL280DF
CBA38MV
BROWN
BLUE
RED
1
2
3
1
2
3
Air handler shipped with jumpers installed between W1 and W2
and W2 and W3.
R connection required for air conditioner with LSOM. Resistor kit
(CAT #47W97) required when connection ComfortSense 7000
with LSOM 2.
L connection wired on units with LSOM.
BLUE BLUE
CBA27
4
4
5
Clip onboard Y1 to Y2 for 2-stage cooling.
Remove jumper for 2-stage cooling.
5 5
5
BLUE
Y2
ML18XC2
ML18XC2
ML18XC2
THERMOSTAT
THERMOSTAT
THERMOSTAT
THERMOSTAT
FIGURE 14. Typical Control Wiring
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