Carrier WeatherExpert 48LC 14 Series Service And Maintenance Instructions page 39

Table 18 — Economizer Module
(Right Hand Terminal Blocks)
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
EXH1
24 vac OUT Exhaust Fan 1 Output
Programmable:
Exhaust fan 2 output
or
AUX1 O
24 vac 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 OUT Y2 out - Cooling Stage 2 Output to stage
Y2-O
2 mechanical cooling
Y1 in - Cooling Stage 2 Input from space
Y1-I
24 vac IN
thermostat
24 vac OUT Y1 out - Cooling Stage 2 Output to stage
Y1-O
2 mechanical cooling
C
COM 24 vac Common
R
24 vac 24 vac Power (hot)
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. 48 and
Table 19 to locate the wiring terminals for each S-Bus and en-
thalpy control sensor.
S-BUS
TERMINALS
(1 AND 2)
Fig. 48 — S-Bus Sensor DIP Switches
DESCRIPTION
DIP
SWITCH
LABEL
DIP
SWITCHES
(3)
S-BUS
2 PIN SIDE
CONNECTOR
Table 19 — HH57AC081 Sensor Wiring Terminations
TERMINAL
NUMBER LABEL
1
S-BUS
2
S-BUS
Use Fig. 48 and Table 20 to set the DIP switches for the desired
use of the sensor.
Table 20 — HH57AC081 Sensor DIP Switch
DIP SWITCH POSITIONS FOR SWITCHES 1, 2, AND 3
USE
1
DA
OFF
RA
ON
OA
OFF
NOTE: When an S-Bus sensor is connected to an existing net-
work, it will take 60 minutes for the network to recognize and
auto-configure itself to use the new sensor.
During the 60 minute setup period, no alarms for sensor fail-
ures (except SAT) will be issued and no economizing function
will be available.
CO Sensor Wiring
2
When using a CO sensor, the black and brown common wires
2
are internally connected and only one is connected to "IAQ
COM" on the W7220. Use the power from the W7220 to pow-
er the CO sensor OR make sure the ground for the power sup-
2
plies are common. See Fig. 49 for CO
CO SENSOR
2
24V
ANALOG
OUT
1 POWER SUPPLY. PROVIDE DISCONNECT
MEANS AND OVERLOAD PROTECTION
AS REQUIRED.
Fig. 49 — CO
INTERFACE OVERVIEW
This section describes how to use the EconoMi$er
terface for:
• Keypad and menu navigation
• Settings and parameter changes
• Menu structure and selection
User Interface
The user interface consists of a 2-line LCD display and a 4-but-
ton keypad on the front of the economizer controller.
Keypad
Use the four navigation buttons (see Fig. 50) to scroll through
the menus and menu items, select menu items, and to change
parameter and configuration settings.
39
TYPE DESCRIPTION
S-BUS
Communications
S-BUS
(Enthalpy Control
Sensor Bus)
S-BUS
Communications
S-BUS
(Enthalpy Control
Sensor Bus)
2
ON OFF
OFF OFF
OFF OFF
sensor wiring.
2
RED L1
(HOT)
BLACK
L2
1
YELLOW
+
BROWN
–
ORANGE
GREEN
Sensor Wiring
2
®
3
X user in-