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Outdoor Unit
Figure 51. Wire Termination in Communicating Systems (Electrical Noise) - Typical
Smart Hub
HD
Display
Subbase
Figure 52. Comfort Sync A3, Communicating Indoor and Outdoor Units, Comfort Sync Zoning (Damper Control
Page 38 of 74
Indoor Unit Controller
Single wire
to terminal "C".
Unused wires
Communicating
Indoor Unit
To ComfortSync
Zoning
To indoor unit
If unable to connect two wires
to indoor unit terminals then
pigtail wiring as exampled
here.
Module) and Zone Sensors
Smart Hub
ACC1 ACC2
R i+ I- C
Single wire
to indoor unit
terminal "C".
Unused wires
OATS (Optional)
Zone
Sensors
PWR
Communicating
D+
Outdoor Unit
D-
C
Up to three zone
PWR
sensors are supported.
D+
D-
C
See ComfortSync Zoning Installation instruction for damper connection information.
Issue 2346
HD Display
Subbase
12VDC
COM BUS
12+
A B
12-
+12V
Single wire
to bundle
wire to indoor
terminal "C".
Unused wires
DOOR" ON DAMPER CONTROL MODULE TO
CONNECT TO THE INDOOR UNIT.
COMFORTSYNC ZONING
SYSTEM
If TSTAT terminal is present,
DO NOT use.
PWR
D+
D-
C
PWR
D+
D-
C
A
B
-12V
DATS
(Required)
508364-01
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