41
Table 14 — Economizer Module - Right Hand Terminal
Blocks
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. 69 and
Table 15 to locate the wiring terminals for each S-Bus sensor.
Use Fig. 69 and Table 15 to locate the wiring terminals for each
enthalpy control sensor.
Fig. 69 — S-Bus Sensor DIP Switches
Table 15 — HH57AC081 Sensor Wiring Terminations
Use Fig. 69 and Table 16 to set the DIP switches for the desired
use of the sensor.
Table 16 — HH57AC081 Sensor DIP Switch
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
2
SENSOR WIRING
When using a CO
2
sensor the black and brown common wires
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
2
sensor OR make sure the ground for the power sup
-
plies are common. See Fig. 70 for CO
2
sensor wiring.
Fig. 70 — CO
2
Sensor Wiring
INTERFACE OVERVIEW
This section describes how to use the EconoMi$er
®
X user
interface 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. 71) to scroll through
the menus and menu items, select menu items, and to change
parameter and configuration settings.
To use the keypad when working with menus:
• Press the ▲ (Up arrow) button to move to the previous
menu.
LABEL
TYPE
DESCRIPTION
Top Right Terminal Blocks
AUX2 I
24 vac IN
The first terminal is not used.
OCC
24 vac IN
Shut Down (SD) or HEAT (W)
Conventional only
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
AUX1 O
24 vac OUT
Programmable:
Exhaust fan 2 output
or
ERV
or
System alarm output
Bottom Right Terminal Blocks
Y2-I
24 vac IN
Y2 in - Cooling Stage 2 Input from space
thermostat
Y2-O
24 vac OUT Y2 out - Cooling Stage 2 Output to stage
2 mechanical cooling
Y1-I
24 vac IN
Y1 in - Cooling Stage 2 Input from space
thermostat
Y1-O
24 vac OUT Y1 out - Cooling Stage 2 Output to stage
2 mechanical cooling
C
COM
24 vac Common
R
24 vac
24 vac Power (hot)
DIP
Switch
Label
DIP
Switches
(3)
S-Bus
2 Pin Side
Connector
S-Bus
Terminals
(1 and 2)
TERMINAL
TYPE
DESCRIPTION
NUMBER
LABEL
1
S-BUS
S-BUS
S-BUS
Communications
(Enthalpy Control
Sensor Bus)
2
S-BUS
S-BUS
S-BUS
Communications
(Enthalpy Control
Sensor Bus)
USE
DIP SWITCH POSITIONS FOR SWITCHES 1, 2, AND 3
1
2
3
DA
OFF
ON
OFF
RA
ON
OFF
OFF
OA
OFF
OFF
OFF
CO
2
SENSOR
24V
ANALOG
OUT
L1
(HOT)
L2
RED
BLACK
YELLOW
BROWN
ORANGE
GREEN
+
–
POWER SUPPLY. PROVIDE DISCONNECT
MEANS AND OVERLOAD PROTECTION
AS REQUIRED.
1
1
