Co 2 Sensor Wiring; Interface Overview; User Interface; Keypad - Carrier 50TCQD14 Installation Instructions Manual

S-Bus
Terminals
(1 and 2)
Fig. 44 - - S- - Bus Sensor DIP Switches
Table 9 – Enthalpy Control Sensor Wiring Terminations*
Terminal
Type
Nbr Label
1 S--- BUS S--- BUS
2 S--- BUS S--- BUS
* Terminals are polarity insensitive.
Table 10 – Enthalpy Control Sensor DIP Switch Settings
DIP Switch Positions for Switches 1, 2, and 3
Use
1
DA * OFF
RA [ ON
OA ** OFF
* DA = Discharge Air
RA = Return Air
[
** OA = Outside Air
NOTE: When a S- - Bus sensor is connected to an existing
network, 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
function will be available.
CO Sensor Wiring —
2
When using a CO sensor the black and brown common
2
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 sensor OR make sure the ground
2
DIP
Switch
Label
DIP
Switches
(3)
S-Bus
2 Pin Side
Connector
C14157
Description
S--- Bus Communications
(Enthalpy Control Sensor Bus)
S--- Bus Communications
(Enthalpy Control Sensor Bus)
2 3
ON OFF
OFF OFF
OFF OFF
for the power supplies are common. See Fig. 45 for CO
sensor wiring.
CO SENSOR
2
24V
+
ANALOG
OUT
–
1
POWER SUPPLY. PROVIDE DISCONNECT
MEANS AND OVERLOAD PROTECTION
AS REQUIRED.
Fig. 45 - - Wiring for CO

Interface Overview

This section describes how to use the economizer's user
interface for:
S Keypad and menu navigation
S Settings and parameter changes
S 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 economizer controller.
MENU UP
SCROLL
(EXIT)
UP/DOWN
BUTTON
BUTTONS
Fig. 46 - - W7220 Controller
Keypad —
The four navigation buttons (see Fig. 46) are used to scroll
through the menus and menu items, select menu items,
and to change parameter and configuration settings.
29
RED L1
(HOT)
BLACK
L2
1
YELLOW
BROWN
ORANGE
GREEN
Sensor
2
SELECT
(ENTER)
BUTTON
2
C14158
2 LINE
LCD
C14206