United Technologies Carrier WeatherMaker 50TC A08 Series, Installation Instructions Manual

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37
Table 3 — 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 la-
beled sensors can only be wired to orange terminals on the con-
troller. Brown labeled sensors can only be wired to S-bus
(brown) terminals. Use Fig. 67 and Table 4 to locate the wiring
terminals for each S-Bus sensor.
Use Fig. 67 and Table 4 to locate the wiring terminals for
each enthalpy control sensor.
Fig. 67 — S-Bus Sensor DIP Switches
Table 4 — HH57AC081 Sensor Wiring
Terminations
Use Fig. 67 and Table 5 to set the DIP switches for the
desired use of the sensor.
Table 5 — HH57AC081 Sensor DIP Switch
NOTE: When a 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
failures (except SAT) will be issued and no economizing func-
tion 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 power the CO
2
sensor OR make sure
the ground for the power supplies are common. See Fig. 68 for
CO
2
sensor wiring.
Fig. 68 — CO
2
Sensor Wiring
INTERFACE OVERVIEW — This section describes how to
use the Economizer’s 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-button keypad on the front of the econo-
mizer controller.
KEYPAD — The four navigation buttons (see Fig. 69) are
used 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.
• Press the ▼ (Down arrow) button to move to the next
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