Preferred FlexFit 110 - Section 3 - Operation & Commissioning

Commissioning 3-39
FlexFit – Linkageless Control – Revision 1.0
PREFERRED
UTILITIES MFG CORPORATION
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Section 3 – Operation & Commissioning
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Initial Steps .................................................................................................. 3-40
Operating the FlexFit ................................................................................... 3-40
Button Functions ................................................................................ 3-40
LCD Screen Indicators ........................................................................3-41
Alarm and Event Log ...........................................................................3-41
Menu Tree ................................................................................................... 3-42
Main Menu Functions .................................................................................. 3-45
Entering and Navigating the Main Menu ............................................ 3-45
Lockout Data ...................................................................................... 3-45
Passwords .......................................................................................... 3-45
Password Levels ........................................................................ 3-46
Obtaining a Temporary Password ............................................. 3-46
Utilities ................................................................................................ 3-46
Date/Time and S/N .................................................................... 3-46
I/O Data Display ......................................................................... 3-46
Cycle Statistics .......................................................................... 3-46
Oxygen Cell Status .................................................................... 3-46
Oxygen Calibration .................................................................... 3-46
Software Versions ..................................................................... 3-46
Conguring Parameters ...............................................................................3-47
FlexFit Edit ...........................................................................................3-47
Servo Setup .................................................................................................3-47
Servo Setup Step 1 – Congure the Servos' Travel Limit Switches .. 3-48
Servo Setup Step 2 – Congure the Servos' Addresses ................... 3-48
Servo Setup Step 3 – Congure the Servos' Functions and Feedback
Data ................................................................................... 3-48
Servo Setup Step 4 – Congure the Servos' Zero and Direction of Travel
........................................................................................... 3-49
Servo Setup Step 5 – Congure the Servos' Span by Seeking Limits
........................................................................................... 3-49
Servo Setup Troubleshooting ............................................................. 3-49
Commission Mode ...................................................................................... 3-50
Curve Points ................................................................................................ 3-50
Starting the Burner ...................................................................................... 3-50
Verifying Positions and Curve Points .......................................................... 3-50
Flame Scanner Tests ...................................................................................3-51
Pilot Test Hold .....................................................................................3-51
Pilot Flame Test (Non-DSI Burners) ....................................................3-51
Main Flame Test ................................................................................. 3-52
Pilot Turndown Test (Non-DSI Burners) ............................................. 3-52
Tuning the Burner ........................................................................................ 3-52
Fuel/Air Ratio Curves ......................................................................... 3-52
Entering Additional Curve Points ....................................................... 3-53
Low Fire, High Fire, Avoid Setpoint .................................................... 3-53
Verifying Curves .......................................................................................... 3-54
Tuning .......................................................................................................... 3-55
The Proportional Function .................................................................. 3-55
The Integral Function ......................................................................... 3-55
The Derivative Function ..................................................................... 3-55
Recommended Procedure for Tuning a PID Loop ............................. 3-55
General Steps for Tuning the FlexFit PID Loop ......................... 3-55
Documentation ............................................................................................ 3-56