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

3. Overview q Introduction q Architecture q Communication Networks q Operation Workstation q Summary

4. Who we are. Founded in 1920 and in continuous operation since then. We are an engineering-based manufacturer of combustion and fuel handling products for industrial, institutional, and commercial power plants. Our Core Business is Combustion Control.

5. Preferred Utilities Manufacturing Corp. Sales representative organizations supported by Regional Managers cover all major markets throughout the United States. Headquarters Danbury, CT

6. Single Boiler Remote Control Pre-wired Combustion Control/ Flame Safeguard Control Cabinet SCADA/Flex System Integrated Flame Scanner and Oxygen Analyzer!

7. Single Boiler Remote Control Simple Local Control with Expanded View Remote Control Two Controllers shown as Five (5) “Faceplates”

8. Multiple Equipment Control System

9. “Intuitive” Remote Control

11. Distributed Control System: q Multiple, physically separated, controller and/or I/O nodes q Controllers and I/O nodes may be located close to the process being controlled q Multiple remote operator workstations q Reliable, high speed communications network q Loop Controllers can be used as backup control station if the workstation, or communication network breaks down

12. Distributed Control System: Local Control Network (Modbus) PCC-III Controllers Redundant Workstations

13. Distributed Communication Network RS-485 Modbus….  High Speed: 1200-38,400 baud  Mode: ASCII or RTU  Medium: 3 wire shielded cable, up to 4000 ft in length  RS232/RS485 Converters: Used to interface to SCADA workstation communication ports

14. Typical Communication Network Slower Comm. Speed BMS Equipment Networked On A Separate Highway

15. Input / Output Flexible…. Supporting over 7,000 words of I/O Data Some Typically Networked Items: Allen Bradley Data Highway Allen Bradley SLC 500 Cleaver Brooks Hawk Fireye E300/E100 GE 90-30, 90-70 Honeywell 7700/7800

16. Remote Monitoring Flexible…. Dedicated Phone Line Control of Multiple Locations Alarm Pager: Monitors Alarms and events for any location

17. Operator Workstation Features…. q Intellution iFix™ q Centralized Boiler Control q Data Acquisition q Alarm Monitoring q Historical Trending q Boiler Tuning q Reports

18. Smart, Central Boiler Control

21. Alarm Management

22. Smart, Central Boiler Control

24. Data Acquisition

25. Historical Trending

27. Boiler Tuning

28. Meaningful Reports  Total steam generated by the plant and each boiler  Total fuel used by the plant and each boiler  Average cost of steam  Efficiency of the plant and each boiler  Heating degree days for the reporting period  Make-up water flow in pounds and also as a percent of steam flow  Hours of operation for each boiler  Steam flow to each of the distribution headers  All reported for the shift, day, month, and year day, or shift depending on the report being generated.

29. Meaningful Reports

30. Preferred’s DCS Summary SCADA/Flex is a….  Distributed Control System with Loop Controller local control security  Integrated controls system, compatible with other systems and control components  Incorporates a Boiler Room Focus and Experience

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