Carrier WeatherMaster Series Installation Instructions Manual page 34

Shipping Temperature
–40 to 150°F (–40 to 65°C)
Relative Humidity
5% to 95% RH non-condensing
Economizer Module Wiring Details
Use Fig. 51 and Tables 4 and 5 to locate the wiring termi-
nals 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. 51 — W7220 Economizer Module Terminal
Connection Labels
Table 4 — 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
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
NA The bottom pin is not used.
* Sylk is a trademark of Honeywell International Inc.
NA
AUX2-
NA
A2 OCC
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
DESCRIPTION
2
Table 5 — Economizer Module - Right Hand
Terminal Blocks
LABEL TYPE
Top Right Terminal Blocks
N/A
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
Y2-O 24 vac OUT
Y1-I 24 vac IN
Y1-O 24 vac OUT
C COM
R 24 vac
34
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
Earth Ground — System Required
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 1 Input from
space thermostat
Y1 out - Cooling Stage 1 Output to
stage 2 mechanical cooling
24 vac Common
24 vac Power (hot)