1. Before You Begin Configuring Your Unit Controller
To configure your unit controller, understand the application and identify the equipment configuration. Common configurations include: Constant Volume, Variable Air Volume (VAV), Economizer, Hot Gas Reheat, Dual Stage, Four Stage, Heat Pump, Thermostat Controls, Network Sensor Control, Space Sensor Control, and Discharge Air Control.
2. Understanding the Local LCD
After applying power to your Rooftop Unit (RTU), a start-up countdown begins on the Unit Control Board (UCB) LCD. The screen will be blank if no faults are present. Navigate menus using the joystick and two push buttons (ENTER, CANCEL) below the LCD. The joystick moves the cursor (>) up and down to scroll through selections.
UCB Top Level Menu Overview
The UCB top-level menu includes options such as: Status, Alarms, Summary, Commission, Controller, Update, Details, Self Test, and View Results. Each selection represents either a sub-menu or a property. Press "ENTER" to display items or values. Move up or down with the joystick to display other properties.
Important: Unit control boards with part numbers SE-SPU1001-5, SE-SPU1011-5, SE-SPU1002-5, SE-SPU1012-5 have a different hardware component than previous board versions. These new components will not allow downgrading to firmware older than 3.3.1.186. An attempt to install an older version will display a message [Info 1025] on the LCD screen.
3. Powering the Unit
Upon power application, the UCB initiates a start-up sequence. The LCD scrolls "Johnson Controls" and "JCI". The display backlight and green Power LED remain lit as long as power is applied. The red Fault LED flashes during start-up and turns off when the sequence finishes. The green SA Bus LED lights briefly.
During the start-up sequence, the joystick, "ENTER", and "CANCEL" buttons are not functional. The LCD shows a countdown (e.g., "18 Startup*").
After approximately 15 seconds, the green SA Bus LED either lights (UCB awaiting communication from SA Bus devices) or flashes (UCB established communication). After 90-120 seconds, the display shows current operating status (e.g., Idle, startup delay, cooling...). The joystick and buttons become operational.
4. Commissioning with the Local LCD
The Commissioning view includes main menus and several sub-menus, such as Standard, Options, and Network Setup. Equipment configuration determines which menus appear. Use the joystick to navigate and "ENTER" to select options.
Note: Detailed menu navigation examples are provided later in this guide, specifically on page 10 for Commissioning Menu Start-up and pages 8-18 for a detailed table of all menus, sub-menus, and properties.
5. Validating Your Configuration
Use the Details > Service menu to ensure configuration parameters are correct. This view shows input values for sensors and coil sensors. If "No Input" appears, parameters are not set or reading properly.
Important: Save your configuration parameters using the Update > Backup feature with the USB port on the UCB before performing a firmware update. Refer to "Connecting your Flash Drive" and "Performing a System Configuration Backup" for more information.
6. Connecting Your Flash Drive for Firmware Update
When a flash drive is connected to the UCB USB port, "USB: Wait" appears (e.g., "Scan 0"). After a few seconds, "USB: OK" appears (e.g., "Scan 18"), indicating files and folders compatible with the UCB are found. The flash drive can remain connected.
Note: If "USB: Wait" does not appear, ensure the flash drive is properly connected and compatible with the UCB, or is not defective.
Press "ENTER", "CANCEL", or move the joystick to navigate the display menu.
7. Performing a System Configuration Backup
Insert your flash drive into the USB port. Navigate to the Update > Backup menu and press "ENTER". "BKP: Wait" appears, and a flashing colon (:) indicates progress, with a percentage increasing on the bottom line. The backup completes in approximately 30 seconds, displaying "BKP: OK" and "100%".
After backup, a comma-separated value (.csv) restoration file is created on the flash drive, named based on the UCB's date and time settings (e.g., RTU_2013-11-30T114609.csv). This file is typically less than 30 KB.
The backup file can be restored using the Upgrade > Restore feature to retrieve configuration after an upgrade or setpoint changes. The Partial Cloning feature allows transferring configuration parameters from one unit to another via the backup file.
Note: Use the Full Cloning feature only when replacing the UCB board.
8. Updating Smart Equipment™ Software (Auto Update)
Firmware Version 3.3.1.186 introduced an "Auto Update" feature (FWU). This feature checks for firmware mismatches on all applicable control boards (Economizer, FDD1, FDD2, 4-Stage). If mismatches exist, the Auto Update process automatically pushes version 3.3.1.186 to all applicable boards, taking 7-30 minutes depending on the number of control boards.
The Auto Update feature required a change to the UCB's memory size. Firmware 3.3.1.186 can be installed on older (4MB memory) boards but will not perform the Auto Update function.
Caution: If power is lost during Auto Update, the UCB will re-attempt updating 90 seconds after normal startup, up to 5 times. If it fails after 5 attempts, manual USB update is required. DO NOT use the joystick, Enter, or Cancel buttons during auto update. If auto update fails, a brief message, blinking Fault LED, and "firmware mismatch" alarm will display, requiring manual update.
If a USB drive is used to flash a 3.1 level board (8MB) with an older 3.0 level firmware, the update must be performed twice.
9. Display Update and Reading Economizer Version
A USB Flash Drive with the appropriate software file (.pkg) must be plugged into the UCB's top level.
Updating Firmware
On the UCB display, push the joystick "down" until ">Update" is shown. Press "ENTER". Follow on-screen prompts to view version, backup, load firmware, and confirm updates. The UCB and economizer will reprogram if software versions differ, followed by a control restart.
Restoring Configuration
Navigate to ">Restore" under the Update menu. Select the desired .csv file (e.g., ">RTUxxxx.csv"). The UCB will read the stored setup, restart, and run the new software version.
Reading Economizer Version
With the Economizer and UCB attached, navigate through the menus using the joystick and "ENTER" button to find ">Contrler" > ">Firm" > ">SysCntlrs" > ">Misc" > ">Econ" > ">EconMainVer". The second line will display the software version installed in the Economizer.
10. SE UCB Display Menu Guide 3.3
This section provides a comprehensive guide to the Unit Control Board (UCB) display menus for Smart Equipment™ controls with Version 3.3 firmware, detailing navigation and viewing of system parameters.
General Navigation: Joystick navigation (▲▼), Press Enter (Ⓨ), Press Cancel (Ⓧ) to return to previous menus.
Menu Categories Overview: The UCB display organizes information into several main menus, each with various sub-menus and properties. Key menu categories include:
- Status: Displays current operational status of the unit and its components (e.g., Unit Status, Economizer Status, Fan Status, Cooling Status).
- Alarms: Lists recent alarms (e.g., Most Recent Alarm).
- Summary: Provides an overview of sensor readings and operational modes, including detailed sensor values (e.g., Space Temperature, Outdoor Air Humidity, Mixed Air Temperature) and unit identification.
- Commission: Allows configuration of various system parameters, including general options (e.g., heating/cooling enable, fan control, heat pumps), standard settings (e.g., occupancy mode), and network setup (e.g., FC Bus communication, BACnet addressing).
- Controller: Contains detailed information and settings related to the UCB itself and connected components, covering network configuration, firmware versions for various boards, network input statuses, FDD (Fault Detection and Diagnostics) details, time settings, and unit description.
- Details: Provides granular control and status for specific functions, including extensive parameters for Occupancy (OCC), Cooling (Clg) with multiple stages, Heating (Htg) with multiple stages, Fan control, Power Exhaust (PowerEx), Fan Variable Frequency Drive (FanVFD), Single Zone VAV (SZVAV), Hot Gas Reheat (HGR), Heat Pump (Heat Pmp), Energy Recovery Ventilator Enable (ERV-En), and Title 24 Load Shed (T24LoadShed).
Note: If operating the equipment with a thermostat, UCB setpoints and parameters may not require alteration. However, custom settings like minimum outside air or lead-lag may be needed. Read this document in detail to understand implications of changes. It is strongly recommended to save a backup of parameter settings on a USB drive before making any major changes to the control.
11. Self Test and View Results
The Self Test menu allows initiation, pausing, and cancellation of a system self-test sequence. The Test Status displays the current state of the self-test. The Reset option erases previous results and prepares for a new test.
The View Result menu displays the outcome of the self-test for various components, indicating "PASS-FAIL" or "WARNING" statuses for elements like Fan, Compressor Stages (C1, C2, C3, C4), Heating Stages (H1, H2, H3), Economizer, and Exhaust.
