Carrier 42C Installation And Start-Up Instructions Manual page 11

5.625
(14.3)
NOTE: Dimensions are in inches.
Dimensions in ( ) are in centimeters.
Fig. 12 — Indoor Air Quality (CO
(33ZCSENCO2) (Monitor Only)
Valve Valve
HEAT1 24VAC
COM HEAT2
DX1 DX2
Fig. 13 — IAQ Sensor Wiring (Monitor Only)
3.25
1.125
(8.3)
(2.9)
) Sensor
2
RH
GND
IAQ
+10V
FAN AC
SPEED
GND
FAN
CNGOVR
ON
CONDSW
LOW
REMOTE
GND
MED
HIGH
R
+
W
GND
24VAC
Fresh B
-
Air
Damper
OAD
1
2
J1
3
11
5
(12.7)
0.25
(0.8)
21 87
24 VAC LINE VOLTAGE
SEPARATE
POWER
SUPPLY
+24V DC
REQUIRED
SPT
GND
SAT
T56
GND
R
W
B
Not Used
CCN
communications
CCN
communications
24 VAC Line
Voltage
Equipment Ground