Carrier A180218C - Page 109

99
A
B
C
D
Zone Control
User Interface &
Smart Sensor(s)
Green
Yellow
White
Red
OAT
HUM
COM
24V
Humidifier
Connection
A
B
C
D
OAT
Sensor
(Optional)
A B C D A B C D
Damper
Control
module
A B C D
Indoor
Unit
Communicating
AC or HP
A04018
Zoning Connection for Communicating Indoor Unit with
2--Stage Communicating Outdoor Unit
NOTE: Some outdoor units do not require “C” and “D” connections. Please see
outdoor unit Installation Instructions.