Carrier 48FC 08-16 Series Service And Maintenance Instructions page 59

MAT
MA
MAT
MA
OAT
OA
OAT
OA
S-BUS
SB
SB
S-BUS
SB
SB
SB
SB
V
IAQ 2-10
C
R
IAQCOM
IAQ 24V
V
C
ACT 2-10
R
NA
ACT COM
ACT 24V
50040839-001
Rev. G
Fig. 83 — W7220 Wiring Terminals
Table 15 — Economizer Module - Left Hand
Terminal Blocks
LABEL TYPE
Top Left Terminal Block
MAT 20k NTC Mixed Air Temperature Sensor (Polarity
MAT and COM Insensitive Connection)
OAT 20k NTC Outdoor Air Temperature Sensor (Polarity
OAT and COM Insensitive Connection)
S-BUS S-BUS Enthalpy Control Sensor
S-BUS (Sylk a Bus) (Polarity Insensitive Connection)
Bottom Left Terminal Block
Air Quality Sensor Input (e.g., CO
IAQ 2-10 2-10 vdc
sensor)
IAQ COM COM Air Quality Sensor Common
IAQ 24V 24 vac Air Quality Sensor 24 vac Source
ACT 2-10 2-10 vdc Damper Actuator Output (2-10 vdc)
ACT COM COM Damper Actuator Output Common
ACT 24-v 24 vac Damper Actuator 24 vac Source
NOTE(S):
a. Third-party trademarks and logos are the property of their respective owners.
NA
AUX2-
NA
A2 OCC
OCC
E-GND
EXH1
EX
A1
AUX1-O
Certified FDD Product
California Title 24, Part 6
HJW10
www.energy.ca.gov
Y2-
Y2I
Y2O
Y2-O
Y1I
Y1-
Y1O
Y1-O
C
R
C
R
50048848-002
Rev. A
DESCRIPTION
2
Table 16 — Economizer Module - Right Hand
Terminal Blocks
LABEL TYPE
Top Right Terminal Blocks
AUX2 I 24 vac IN
OCC 24 vac IN
E-GND E-GND
EXH1 24 vac OUT Exhaust Fan 1 Output
AUX1 O 24 vac OUT
Bottom Right Terminal Blocks
Y2-I 24 vac IN
24 vac OUT Y2 out - Cooling Stage 2 Output to stage
Y2-O
Y1-I 24 vac IN
Y1-O 24 vac OUT
C COM
R 24 vac
S-BUS SENSOR WIRING
The labels on the sensors and controller are color coded for ease of
installation. Orange labeled sensors can only be wired to orange
terminals on the controller. Brown labeled sensors can only be
wired to S-bus (brown) terminals. Use Fig. 84 and Table 16 to lo-
cate the wiring terminals for each S-Bus sensor.
Use Fig. 84 and Table 17 to locate the wiring terminals for each
enthalpy control sensor.
S-Bus
Terminals
(1 and 2)
Fig. 84 — S-Bus Sensor DIP Switches
59
DESCRIPTION
The first terminal is not used.
Shut Down (SD) or HEAT (W)
Conventional only
and
Heat Pump Changeover (O-B) in Heat
Pump mode.
Occupied/Unoccupied Input
Programmable:
Exhaust fan 2 output
or
ERV
or
System alarm output
Y2 in - Cooling Stage 2 Input from space
thermostat
2 mechanical cooling
Y1 in - Cooling Stage 2 Input from space
thermostat
Y1 out - Cooling Stage 2 Output to stage
2 mechanical cooling
24 vac Common
24 vac Power (hot)
DIP
Switch
Label
DIP
Switches
(3)
S-Bus
2 Pin Side
Connector