MicroMetl ECD-SRTCA-D2 - General Jade W7220 Controller Information; W7220 Economizer Controller Module; User Interface and Keypad Navigation

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Since 1965
MicroMetl
Using the Keypad with Settings and Parameters
To use the keypad when working with Setpoints, System Setup
Advanced Settings, Checkout Tests and Alarms:
1. Navigate to the desire menu.
2. Press the (Enter) button to display the rst 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 currently
displayed item.
5. Press the ▲ button to increase (change) the displayed
parameter value.
6. Press the ▼ button to decrease (change) the displayed
parameter value.
NOTE: When values are displayed, pressing and holding the ▲
or ▼ button causes the display to automatically increment.
7. Press the (Enter) button to accept the displayed value and
store it in nonvolatile RAM.
8. “CHANGE STORED” displays.
9. Press the (Enter) button to return to the current menu
parameter.
10. Press the ↑ (Menu Up/Exit) button to return to the previous
menu.
Menu Structure
Table 11 illustrates the complete hierarchy of menus and parameters
for the economizer system.
The Menus in display order are:
• STATUS
• SETPOINTS
• SYSTEM SETUP
• ADVANCED SETUP
• CHECKOUT
• ALARMS
W7220 ECONOMIZER
The economizer controller used on electro mechanical units is the
Honeywell W7220 which is to be located in the RTU base unit’s
Control Box. See Fig 35 for button description of the W7220
controller. The W7220 controller provide the following:
• 2-line LCD interface screen for setup, conguration and
troubleshooting.
• On-board fault detection and diagnostics
• Sensor failure loss of communications identication
• Automatic sensor detection
• Capabilities for use with multiple-speed indoor fan systems
Fig. 35 - W7220 Controller
IMPORTANT NOTE: The default setting on the W7220 controller
is for a “Fan Type” with 2 speed. If your unit is 1 speed, the
setting under SYSTEM SETUP > FAN TYPE must be changed
to 1 speed. NOTE: Some models' default may vary.
User Interface
The user interface consists of a LCD display and a 4-button keypad
on the front of the economizer controller.
Keypad
The four navigation buttons (see Figure 35) are used to scroll
through the menus and menu items, select menu items, and to
change parameter and conguration settings.
Using the Keypad with Menus
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 rst 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.
General Jade W7220 Controller and Sensor Information