Carrier 42C Installation And Start-Up Instructions Manual page 17

Valve
COM
DX1
DRAIN WIRE (TYP)
BLK (TYP)
RED (TYP)
1 2 3
CCN
FCC
LEGEND
CCN — Carrier Comfort Network
FCC — Fan Coil Controller
Fresh
Air
Damper
Valve
HEAT1 24VAC
HEAT2
DX2
Fig. 19 — Remote Occupancy Wiring (Field-Installed)
WHT (TYP)
1 2 3
CCN
FCC
Fig. 20 — Communication Bus Wiring
+24V DC
RH
SPT
GND
GND
IAQ
SAT
+10V
T56
FAN AC
SPEED
GND
FAN GND
ON
CNGOVR
CONDSW
LOW
REMOTE
GND
MED
HIGH
R R
+
24VAC
W
W
GND
B
B
OAD -
1
2
J1
3
1000 FT. MAXIMUM
1 2 3
CCN
FCC
17
Not Used
CCN
communications
CCN
communications
24 VAC Line
Voltage
Equipment Ground
1 2 3 1 2 3
CCN
FCC
BRIDGE
(RECOMMENDED)
GND
COMM