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Johnson Controls Ducted Systems
RRS economizer interface overview
Units with Simplicity Lite Controls will have a field installed
(RRS) Economizer Kit Offered.
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 an LCD display and a 4-button
keypad on the front of the economizer module.
Figure 8: RRS Economizer LCD and keypad layout
Keypad
The 4 navigation buttons illustrated in Figure 18 are used to
scroll through the menus and menu items, select menu items,
and to change parameter and configuration settings.
Using the keypad with menus
To use the keypad when working with menus:
• Press the
(enter) button navigates to the next level.
• Each press of the ^ (scroll up) and v (scroll down) buttons
move the > cursor.
• Each press of the esc (cancel) button navigates to the
previous level.
Level 0 of the parameter menu, where either a blank screen is
shown or active Alarm(s) are shown in 20-second intervals, is
displayed following:
• The boot-up sequence
• 45 minutes of menu navigation inactivity
• Multiple presses of the esc (cancel) button
From Level 0 of the parameter menu, navigation to Level 1 of
the menu is done with a press of the ^ (scroll up), v (scroll
down) or
(enter) button.
The LEDs at the center-left of the RRS Economizer Controller
indicate:
• POWER (green)
• Lit whenever 24 volts AC power is present to the RRS
Economizer Controller C and R pins
• FAULT (red)
• Lit, then flashes during the boot-up sequence of the RRS
Economizer Controller
• Not lit when there are no Alarms active
• Double-flash/pause continuously when Alarms are active
• SA BUS (green)
• Will not be lit
Menu structure
The top level menus are:
• STATUS
• ALARMS
• SUMMARY
ECONOMIZER, POWER EXHAUST,
COMPRESSOR
• COMMISSION
• CONTROLLER SETTINGS
• UPDATE
• DETAILS
• SELF TEST
• VIEW RESULTS
NOTE:
Your menu parameters will be different depending on
your configuration. See the RRS Economizer Control
Quick Start Guide P/N 5292230-USG-A-1016, found on
UPG.net \Controls.
RRS Economizer controller parameter menu functions
There are several "conditional" parameters within the menu.
Parameters for temperature, humidity and CO? inputs are only
shown in the menu once sensor presence has been detected.
Parameters associated with a function are only shown in the
menu when that function is enabled.
Smart Equipment™ economizer sequences
Units with the Smart Equipment™ Control will have a factory
option or field kit with Johnson Controls Economizer.
Several functions can drive the economizer, including: minimum
position, free cooling, economizer loading, and minimum
outdoor air supply.
Economizer minimum position
The economizer minimum position is set during occupied mode
when outside air is not suitable for free cooling. The position of
the damper is set proportionally between the "Economizer
