1. PREFERRED UTILITIES MFG CORP 31-35 South St. Danbury CT T: (203) 743-6741 F: (203) 798-7313 www. PREFERRED-MFG.com

2. Overview  Introduction  Combustion Experience  ZP Oxygen Analyzer  PCC-III Multiple Loop Controller  Pricing  Summary

3. In-Situ Oxygen Probe No separate analyzer, one less item to mount Field replaceable probe Only one conduit to stack.

4. In-Situ Oxygen Probe  Proven Reliable  Sensing element has been proven reliable in 100s of installation over the last 10 years  No Reference Air  The probe uses ambient air as a reference.  Competitors use instrument air and run the risk of element cracking due to water  Automated, menu driven pushbutton calibration.  Fully automatic calibration package available.

5. In-Situ Oxygen Probe  Thick cell  Avoids premature cell failures  Ceramic heater  Provides reliable long life  Complete detailed diagnostics  Automatic impedance checking  Alarms when time to recalibrate  Alarms when reaching end of cell life  Optional fuel gas temperature element / T/C input

6. Jackshaft Control with Air Trim

7. Air Trim

8. Fuel Trim

9. Combustion Experience 25 years of Combustion Control Experience…  Third Generation Digital Controller  2400 PCC II/III Controllers Installed Exclusively in Combustion Control Applications  38 SCADA/Flex Projects  640 Rotary Cup Burner Projects

10. Combustion Experience JC Boiler Control & Monitoring Projects….  > 8000Boilers  Numbers from 1998.…  324Smoke Opacity Monitors  243Flue Gas Temperature Monitors  226Draft Indicators  212Draft Controllers  91Lead Lag Controllers

11. Combustion Experience PCC II/III Combustion Control Projects....  967Boilers  624 Jackshaft Controlled Boilers  127Parallel Positioning Controlled Boilers  103Metering Controlled Boilers  351Oxygen Trim Systems  13EPA Compliant Opacity Monitors

12. PCC-III Combustion Experience Boiler Specific...  Operator Friendly  F(x) Characterizers with “Learn” Mode  Built In Boiler Efficiency  Constructed For Boiler Front Mounting  120 Vac Inputs for Direct BMS Interface  Triac Outputs to Drive Electric Actuators  Free Standard Combustion Blockware There are many digital controller manufacturers, but NONE have Preferred’s in-depth and ongoing combustion control experience.

13. PCC-III - Construction Constructed For Boiler Front Mounting...  Weather Proof / Rain Proof Construction  7 3/4” Deep Case For Easy Mounting in Standard Burner Panels  32 to 120 deg F rating for Continuous Operation  Built-in Surge Suppressor, and 99-135 Vac Input Power Rating for Industrial Applications

14. PCC-III - Display English Used For Operation & Configuration...  16 character process variable and alarm description messages  10 point first out alarm annunciator  Intuitive Bargraphs  User Configurable Pushbuttons Large Displays & Pushbuttons

15. PCC-III - Input / Output Designed For Boilers...  One PCC-III with integral I/O is capable of:  A Dual Fuel, Fully Metered with Oxygen Trim Control Scheme!  Standard 120 Vac Inputs, 8 Amp Relay Outputs for Easy BMS Interfacing  215 mA 24 Vdc Power Supply for Transmitters  Triac Output Option Card for Electric Actuators  Standard Optically Isolated RS485 Modbus

16. PCC-III - Input / Output  18 Input / Outputs Standard!  With Option Cards, Up to:  15 Analog Inputs  6 Analog Outputs  13 120 Vac Discrete Inputs  Partial List of Option Card Combinations:

17. PCC-III - Input / Output Five (5) Discrete Inputs, 120Vac, Opto-Isolated Isolated RS 485; Four (4) Discrete Outputs, 24Vdc, 200mA; Two (2) Analog Outputs, 4 - 20mAdc, 750 Ohm; Five (5) Analog Inputs, 4 - 20mAdc, 1 - 5Vdc 120 VAC Power Input Two (2) Relay Outputs, 120 Vac 8 Amps. Max One (1) Pair Triac Outputs, 2A, 24 - 120Vac Option Slot 3 Board CPU Board 33 Option Slot 3 30 29 31 32 CPU Board PCC-III REAR VIEW "S” Board 120 Vac “L” & “N” Commons Option Slot 1 and 2 Board (s) Five (5) Analog Inputs, 4 - 20mAdc, 1 - 5 Vdc "A" Board Three (3) Isolated Analog Inputs, 4 - 20mAdc, 1 - 5 Vdc "B" Board Three (3) Analog Inputs 4 - 20mAdc, 1 - 5 Vdc Two (2) Analog Outputs, 4 - 20mAdc, 750 Ohm "F" Board Two (2) Pair Triac Outputs, 2A, 24 - 120Vac Two (2) Analog Inputs Pot, 4 - 20mAdc, 1 - 5 Vdc "G" Board Two (2) Relay Outputs, 120 Vac, 8 Amps. Max Four (4) Discrete Inputs, 120Vac, Opto-Isolated "J" Board

18. PCC-III - Configuration English Used For Operation & Configuration...  Intuitive, Easy to configure “Soft Wired” Blockware  Flexible Configuration Methods  No Cost - Front Panel Edit Menus  Low Cost - PC3_Edit ™ Spreadsheet  Full Featured - PC3_Draw ™ CAD  RS232 Up/Download to Laptops

19. PCC-III - Front Panel Editing English Used For Operation & Configuration… Edit keys Edit Display Indicators Edit Displays

20. PCC-III - Front Panel Edit Menus QUICK MENU EDIT A BLOCK PASSWORD MENU (ENTER S/M) OR (EXIT S/M) MEMORY MENU COM MENU CALIBRATE I/O UTILITIES MENU MAIN Menu: ALL S/M or (EXIT S/M) A0 b0c1 AUTO or (S/M) A0 b0c2 AUTO or (S/M) SERVICE MANUAL Menu: ENTER PASSWORD SECURE CONTROLLER TIMEOUT CHANGE OPERATOR PASSWORD CHANGE TECHNICIAN PASSWORD PASSWORD Menu: ENTER THE BLOCK NUMBER... Bxx FUNCTION TYPE Bxx IO1 DESCRIPTION Bxx IO2 DESCRIPTION.. Bxx P01 DESCRIPTION Bxx P02 DESCRIPTION.. EDIT A BLOCK Menu: COPY PRIMARY TO BACKUP COPY BACKUP TO PRIMARY ERASE PRIMARY COMPARE MEMORIES REMAINING MEMORY REPORT CONFIG. NAME EPROM VER. MEMORY Menu: EXAMINE BLOCK FIND FUNCTION FIND USAGE FORCE BLOCK UN-FORCE A BLOCK UN-FORCE ALL BLOCKS DISPLAY SCAN TIME EDIT QUICK MENU BLOCK TIMING UTILITIES SUB-MENU COM PORT ADDRESS BAUD PARITY RTU/ASCII +/- DATA TIME OUT TEST CABLE COM PORT Menu: BOARD O INPUTS (BOARD 1 INPUTS) (BOARD 2 INPUTS) BOARD O OUTPUTS (BOARD 1 OUTPUTS) (BOARD 2 OUTPUTS) CALIBRATION Menu: HI PSI ALM SP LO PSI ALM SP HI LEVEL ALM SP LO LEVEL ALM SP PSI GAIN PSI REPEAT/MIN LEVEL GAIN LEVEL REPEAT/MIN QUICK Menu:

21. PCC-III - Front Door Removed RS232 BLOCKWARE DOWNLOAD PORT BACKUP MEMORY WRITE PROTECT JUMPER FRONT PANEL CABLE CONNECTOR BACKUP MEMORY MODULE REMOVE ONE SCREW TO TAKE AWAY FRONT PANEL

22. PCC-III - PC3_Edit ™ Spreadsheet

24. PCC-III Visio ™ PC3_Draw Blockware CAD Allows PCC-III to be configured using a library of block templates with simple “drag” & “drop” mouse operations

25. Oxygen Analyzer Logic

26. Efficiency Logic

30. Easy Commissioning with “Learn” Mode...  Controllers “Learn” Fuel-Air ratios  Fuel and Air controllers are placed in Manual  Burner is adjusted for optimum “low fire”  “Store” button is pressed  Air Flow SP, Oxygen SP, FD and FGR damper curve points automatically calculated and entered.  Process is repeated for up to 10 more load points  No calculating or entering of numeric data  “Edit” points by re-Learning or via Edit Menu  Separate Sets of Curves for Gas and Oil

31. Tools for Commissioning  Front Panel Edit Keys Allow Commissioning without laptops or handheld devices  “Quick Menus” for rapid editing of tuning constants, alarm setpoints, and key parameters  “Last Parameter” selection  Optional Password Protection with Time-out  Copy between Primary and Backup Memories  “Examine”, “Block Force” and, “Service Manual” Troubleshooting Modes  Laptop Commissioning with PC3_Edit ™ or PC3_Draw

32. Lowest Installed Cost  Shallow case allows smaller enclosure  Weather / Rain Proof case avoids glass doors  No need for external isolation relays  Built in 215mA transmitter power supply  Largest quantity of I/O in a single enclosure  “Examine”, “Block Force” and “Learn” modes for efficient commissioning  Free project proven combustion solutions  30 years of combustion experience to ensure a smooth project

33. Summary CB Oxygen Trim From Preferred..  Simple commissioning  Simplified approach to calibration  Easy calibration  Learn Mode  Low Cost & Field Proven.  10 year old sensor  Thousands of PCC Controllers installed.

34. Factory Sales Offices located throughout the U.S., supported by sales representative organizations. PREFERRED UTILITIES MFG CORP