Co2 Sensor Wiring; Interface Overview - Bryant Preferred Series Installation Instructions Manual

Table 8 — HH57AC081 Sensor Wiring Terminations
TERMINAL
NUMBER LABEL
1
S-BUS
2
S-BUS
Use Fig. 48 and Table 9 to set the DIP switches for the desired
use of the sensor.
Table 9 — 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.
TYPE DESCRIPTION
S-BUS
Communications
S-BUS
(Enthalpy Control
Sensor Bus)
S-BUS
Communications
S-BUS
(Enthalpy Control
Sensor Bus)
2 3
ON OFF
OFF OFF
OFF OFF
sensor wiring.
2
RED L1
(HOT)
BLACK
L2
1
YELLOW
BROWN
ORANGE
GREEN
Sensor Wiring
2
X user in-
®
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.
• Press the (Enter) button to display the first item in the
currently displayed menu.
• Press the (Menu Up/Exit) button to exit a menu's item
and return to the list of menus.
Fig. 50 — W7220 Controller Navigation Buttons
To use the keypad when working with Setpoints, System and
Advanced Settings, Checkout tests and Alarms:
1. Navigate to the desired menu.
2. Press the (Enter) button to display the first item in the
currently displayed menu.
3. Use the ▲ and ▼ buttons to scroll to the desired parameter.
4. Press the (Enter) button to display the value of the cur-
rently displayed item.
5. Press the ▲ button to increase (change) the displayed param-
eter value.
6. Press the ▼ button to decrease (change) the displayed param-
eter value.
NOTE: When values are displayed, pressing and holding the
▲or ▼ button causes the display to automatically increment or
decrement.
1. Press the (Enter) button to accept the displayed value and
store it in nonvolatile RAM. "CHANGE STORED" displays.
2. Press the (Enter) button to return to the current menu
parameter.
3. Press the (Menu Up/Exit) button to return to the previous
menu.
Menu Structure
Table 10 illustrates the complete hierarchy of menus and pa-
rameters for the EconoMi$er
The Menus in display order are:
• STATUS
• SETPOINTS
• SYSTEM SETUP
• ADVANCED SETUP
• CHECKOUT
• ALARMS
31
X system.
®