Carrier 50HCQ07 Installation Instructions Manual page 33

Economizer Module Wiring Details
Use Fig. 46 and Tables 6 and 7 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
IAQ COM
IAQ 24V
V
C
ACT 2-10
R
NA
ACT COM
ACT 24V
50040839-001
Rev. G
Fig. 46 — W7220 Wiring Terminals
NA
AUX2-
NA
OCC
A2
OC C
E-GND
EXH1
EX
A1 AUX1-O
Cert 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
Table 6 — Economizer Module - Left Hand Terminal
LABEL TYPE
Top Left Terminal Block
MAT 20k NTC
MAT and COM
OAT 20k NTC
OAT and COM
S-BUS S-BUS
S-BUS (Sylk* Bus)
Bottom Left Terminal Block
IAQ 2-10 2-10 VDC
IAQ COM COM
IAQ 24V 24 VAC
ACT 2-10 2-10 VDC
ACT COM COM
ACT 24v 24 VAC
* Sylk is a trademark of Honeywell International Inc.
Table 7 — Economizer Module - Right Hand Terminal
LABEL TYPE
Top Right Terminal Blocks
AUX2 I 24 VAC IN
OCC 24 VAC IN
E-GND E-GND
24 VAC
EXH1
OUT
24 VAC
AUX1 O
OUT
Bottom Right Terminal Blocks
Y2-I 24 VAC IN
24 VAC
Y2-O
OUT
Y1-I 24 VAC IN
24 VAC
Y1-O
OUT
C COM
R 24 VAC
33
Blocks
DESCRIPTION
Mixed Air Temperature Sensor (Polarity
Insensitive Connection)
Outdoor Air Temperature Sensor
(Polarity Insensitive Connection)
Enthalpy Control Sensor
(Polarity Insensitive Connection)
Air Quality Sensor Input (e.g. CO
sensor)
Air Quality Sensor Common
Air Quality Sensor 24 VAC Source
Damper Actuator Output (2-10 VDC)
Damper Actuator Output Common
Damper Actuator 24 VAC Source
Blocks
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
Exhaust Fan 1 Output
Programmable:
Exhaust fan 2 output
or
ERV
or
System alarm output
Y2 in - Cooling Stage 2 Input from space
thermostat
Y2 out - Cooling Stage 2 Output to stage
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)
2