Carrier WeatherMaster 50HCQ 04 Series Installation Instructions Manual page 33

Relative Humidity
5% to 95% RH non-condensing
ECONOMIZER MODULE WIRING DETAILS
Use Fig. 51 and Tables 5 and 6 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. 51 — W7220 Wiring Terminals
Table 5 — 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 (Polarity
OAT
and COM 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.
AUX2-
NA
OCC
A2
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
50048848-002
Rev. A
Blocks
DESCRIPTION
Table 6 — Economizer Module - Right Hand Terminal
LABEL
AUX2 I
24 vac IN
OCC
24 vac IN
E-GND
E-GND
EXH1
24 vac OUT Exhaust Fan 1 Output
NA
AUX1 O
24 vac OUT
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. 52 and Table 7 to lo-
cate the wiring terminals for each S-Bus sensor.
Use Fig. 51 and Table 7 to locate the wiring terminals for each en-
C
thalpy control sensor.
R
2
Fig. 52 — S-Bus Sensor DIP Switches
33
Blocks
TYPE DESCRIPTION
Top Right Terminal Blocks
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
Bottom Right Terminal Blocks
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 S-BUS
TERMINALS 2 PIN SIDE
(1 AND 2) CONNECTOR