1. Preferred Utilities Manufacturing Corporation

2. q Introduction q Architecture q Communication Networks q Operation Workstation q Summary Preferred Utilities Manufacturing Corp.

3. 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. Preferred Utilities Manufacturing Corp.

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

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

6. Simple Local Control with Expanded View Remote Control Two Controllers shown as Five (5) Faceplates

7. Multiple Equipment Control System

8. Intuitive Remote Control

10. 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 Distributed Control System: q Loop Controllers can be used as backup control station if the workstation, or communication network breaks down

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

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

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

14. 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

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

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

17. Smart, Central Boiler Control

20. Alarm Management

21. Smart, Central Boiler Control

23. Data Acquisition

25. Historical Trending

27. Boiler Tuning

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

29. Meaningful Reports

30. Preferreds DCS Summary SCADA/Flex is a…. 4 Distributed Control System with Loop Controller local control security 4 Integrated controls system, compatible with other systems and control components 4 Incorporates a Boiler Room Focus and Experience

31. Preferred Utilities Manufacturing Corp For further information, contact... Preferred Utilities Manufacturing Corporation 31-35 South St. Danbury CT T: (203) 743-6741 F: (203) 798-7313 www.preferred-mfg.com