Carrier 50HCQ12 Installation Instructions Manual page 30

Shipping Temperature
–40 to 150°F (–40 to 65°C)
Relative Humidity
5% to 95% RH non-condensing
Economizer Module Wiring Details
Use Fig. 47 and Tables 8 and 9 to locate the wiring terminals for
the Economizer module.
NOTE: The four terminal blocks are removable. Slide out each
terminal block, wire it, and then slide it back into place.
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. 47 — W7220 Wiring Terminals
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
30
Table 8 — Economizer Module - Left Hand Terminal
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
OAT and COM (Polarity Insensitive Connection)
S-BUS S-BUS Enthalpy Control Sensor
S-BUS (Sylk* 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 24v 24 VAC Damper Actuator 24 VAC Source
* Sylk is a trademark of Honeywell International Inc.
Table 9 — Economizer Module - Right Hand Terminal
LABEL TYPE
Top Right Terminal Blocks
AUX2 I 24 VAC IN The first terminal is not used.
Shut Down (SD) or HEAT (W)
Conventional only
OCC 24 VAC IN and
Heat Pump Changeover (O-B) in Heat
Pump mode.
E-GND E-GND Occupied/Unoccupied Input
24 VAC
EXH1 Exhaust Fan 1 Output
OUT
Programmable:
Exhaust fan 2 output
24 VAC or
AUX1 O
OUT ERV
or
System alarm output
Bottom Right Terminal Blocks
Y2 in - Cooling Stage 2 Input from space
Y2-I 24 VAC IN
thermostat
24 VAC Y2 out - Cooling Stage 2 Output to stage
Y2-O
OUT 2 mechanical cooling
Y1 in - Cooling Stage 2 Input from space
Y1-I 24 VAC IN
thermostat
24 VAC Y1 out - Cooling Stage 2 Output to stage
Y1-O
OUT 2 mechanical cooling
C COM 24 VAC Common
R 24 VAC 24 VAC Power (hot)
Blocks
DESCRIPTION
Blocks
DESCRIPTION
2