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Category Archives: Press Releases

 

Linkageless control technology makes boiler rooms more efficient and easier to operate 

In order to cut boiler room costs and solve end-user headaches, many boiler professionals are making the move to “linkageless” control systems. A linkageless system uses a burner with individual servos to control fuel and air ratios, and this in turn provides more savings to the end user. Some of the biggest benefits of linkageless systems include:

1)      Higher efficiency: O2 levels may fluctuate but will always return to position of highest fuel and electrical efficiency. In addition, turndown is often improved resulting in less cycling of the burner.

2)      Monitoring and communication: The system communicates via Modbus and reports on all functions. The main module monitors the positions of all fuel- and air-control devices. Any positioning error shuts the burner down safely.

3)      Automatic adjustments for ambient air and fuel changes: Linkage systems can cause major problems for technicians. Once all the linkage is set, the ambient air density may change, throwing the system off. In addition, instead of system readjustment every time there is a fuel switch, the positions of all servos are programmed and independent. This means that the system adjusts automatically to fuel/air ratio changes as well as fuel changes.

The new FlexFit system is an innovation in linkageless technology now being offered by Preferred Utilities Manufacturing Corporation. The FlexFit solution offers a less costly, less time-consuming retrofit to modern linkageless controls in the boiler room. Leveraging the industry-leading BMU (Burner Mate Universal) platform, the FlexFit can be used in new installations or be easily retrofitted into existing jackshaft control panels that use supported common flame safe guards. This solution is half the price of the BMU (with the same benefits), and a trained technical can install the FlexFit in one day.

Fuel savings are accomplished with parallel positioning combustion control with optional oxygen trim. Electricity savings are provided by the ability to control a Variable Speed Drive for the FD Fan. In addition to flame safeguard and combustion control, the FlexFit also includes optional draft control.

The FlexFit communicates to Building Automation Systems by Modbus or optional Ethernet. And because it is microprocessor-based and pre-engineered, the FlexFit is an economical alternative to more expensive PLC-based boiler controllers. The parts are in stock for immediate delivery and require no programming.

This is a control solution that delivers benefits for all members of your team. Owners will see savings through electrical and fuel efficiency, and they’ll have tighter control of boiler room functions. Managers will be able to get ahead of emergencies before they happen, and technicians will enjoy easy installation, in-and-out maintenance, and local support.

With a flexible design that is more affordable, more accessible, and more accurate, FlexFit is the retrofit solution you’ve been waiting for.

About Preferred Utilities Manufacturing Corporation:

Preferred Utilities Manufacturing Corporation is an engineering-based manufacturer of products for commercial, institutional, industrial and nuclear power facilities. Our products include fuel oil handling systems and components, boiler instrumentation and controllers, high quality burners, and nuclear power plant outage reduction tools and component parts. Continuous research and development are applied to our existing products and help us to lead the industry with new and innovative power plant solutions. Our manufacturing, engineering, and administrative headquarters is located in Danbury, Connecticut, and regional sales and service offices are located throughout the United States.

 

NEW PRODUCT ALERT!

Background: In the past, using anti siphon valves between the day tank and a generator has been discouraged due to the low vacuum capability of generator pumps. A generator fuel oil pump may only be able to pull 5 in. Hg. In addition, there is a filter installed between the day tank and the generator pump that takes a 2-3” Hg pressure drop. This means that only 2” Hg could be available to open an anti-siphon valve, which poses a problem for most designs. Engineers have addressed the need to prevent siphoning from a day tank by installing a solenoid valve that opens when the generator pump turns on. However, this solenoid needs to be wired and is dependent on the controls functioning properly.

Solution: Now, Preferred has a better solution! We now have an anti-siphon valve that will open with only 2” Hg of suction available, and it is designed for application between the day tank and the generator pump. In addition, this Low Vacuum Anti Siphon Valve is UL Listed. For diesel handling components, it is important to ensure the valves one is purchasing are listed by a an agency such as UL as it ensures compliance to a standard and that the product has been independently evaluated. This Low Vacuum Anti Siphon Valve is available in ½” up to 2” NPT.

 

October is National Cyber Security Awareness Month. According to a study by the University of Maryland, there is a hacking attempt every 39 seconds. And, the average cost of a data breach in 2020 will exceed $150 million.

We live in a connected world. These connections allow for a pace of commerce and communication previously unimaginable.

As everything becomes more connected, threats to the cyber security of commercial facilities and industrial equipment grow every day.

Traditionally, when working with operationally sensitive equipment such as HMI/SCADA Systems, the established practice has been to “Air-Gap” your equipment and prevent any access from the outside world. Globalization, regulations, & advanced data analysis techniques have made this practice obsolete and costly to your bottom line. Plants that choose to be “Air-Gapped” lose out on new innovations that allow for increased oversight and efficiency optimization to plant systems.

Now, you can connect to your facility and equipment from anywhere without compromising the security of your operations.

The Preferred Cloud Remote Monitoring Platform offers three levels of encrypted, secure, and continuous analytics on your equipment, while recommending cost saving and preventative maintenance options to reduce downtime and emergency service.

 

To meet New York City emissions regulations and secure a sustainable future for their plant, the 4th largest high pressure steam plant in NYC chose Preferred for its #6 oil to gas and #2 oil conversion.

This plant has a rich history, with four (4) watertube boilers stamped 1939, traditionally burning #6 oil except during World War II when they burned coal because oil was going to the war effort.

Pictured Below: Old panel on the left, new panel on the right- This is one of five new panels. We accommodated the customer with the same look of the old panel, but with state-of-the-art technology.

With (4) watertube boilers and (4) 60,000 gallon, single wall tanks buried 15 feet underground, they had some work to do in order to convert from #6 oil to gas and #2 oil by 1/1/2020, when NYC enacts fines for facilities not in compliance with emissions regulations.

Preferred met the challenge with new oil guns/tips, a complete and new fuel oil system, Allen Bradley PLC combustion controls to replace their old Bailey single-loop controllers, and EPA, DEC, DEP compliant tank gauging system for the single wall, buried tanks.

Spreading Combustion Joy through compliance and innovation!

 

Read the original article here.

By Rich Kirby, Patch Staff Aug 12, 2019 1:30 pm ET

Preferred Utilities is headquartered in Danbury with facilities around the United States employing 90 people. Preferred Utilities is headquartered in Danbury with facilities around the United States employing 90 people. U.S. Senator Chris Murphy (D) announced Preferred Utilities Manufacturing in Danbury is this week’s “Murphy’s Monday Manufacturer.”

Founded in 1920, Preferred Utilities specializes in the manufacturing of burners, instruments and controls, and fuel oil handling equipment for industrial, commercial, and missions critical applications. The company does work for government and municipal buildings, hospitals, colleges and universities, data centers, pharmaceutical companies, waste management plants, and nuclear facilities.

“Preferred Utilities is leading the way in combating climate change by using alternative and renewable fuels to run their business and companies around the world are noticing. They are committed to the Danbury community through partnerships with local schools and charitable organizations. I’m happy to highlight them,” said Murphy in a release.

Preferred Utilities became the first company in the Northeast to convert its boilers to Bio-Residual Oil, which is produced from vegetable grease and animal fat, to power its 50,000 square foot facility in Danbury. They are also one of the first companies in Connecticut to convert its boilers to renewable fuel.

“Although founded in 1920, we moved to Danbury in 1946 and made it our home. Preferred is very attached and dedicated to the greater Danbury community and we employ some of the top people in our industry, born and raised in Connecticut. Because we are a family company, Preferred employs several generations of the same family, all Connecticut residents and members of the community,” said David Bohn, President and CEO of Preferred Utilities Manufacturing Company.

Preferred Utilities is active in the Danbury community, routinely offering internships to high school and college students in the area, and working with organizations like Danbury Hospital, St. Jude Children’s Cancer Hospital, New Pond Farm, and Danbury Music Center, according to the release.

 

Diesel Exhaust Fluid (DEF) was developed to help keep heavy-duty diesel fueled machinery like boilers operating within federal emissions standards. At the chemical level, DEF is a combination of 67.5% de-ionized water and 32.5% urea that transforms harmful nitrous oxide emissions into harmless water and gas.

Urea is an organic chemical compound produced as waste by the body after metabolizing protein—but the urea used in DEF is not (despite some confusion on the subject) derived from human or animal urine. For nearly two centuries, scientists have been able to create synthetic urea, which is much more appropriate for the DEF application.

DEF isn’t actually a fuel additive, and it never comes in contact with diesel. Rather, it is stored in a separate tank and is pumped into the exhaust stream of diesel machinery to break down dangerous NOx emissions into safe nitrogen and water. This process is called Selective Catalytic Reduction (SCR).

Changes in EPA emission standards have required diesel burning machines to reduce their output, and SCR is the technology of choice for this purpose. As emission standards have continued to expand to include off-road vehicles, generators, and a variety of engines, the use of DEF is becoming more and more widespread.

To properly deliver DEF, the Diesel Exhaust Fluid Urea Pump system is designed to safely and effectively transfer DEF fluid from a tank to diesel equipment, helping facilities comply with strict NOx emission regulations. Constructed using stainless steel piping and pumps, the DEF system lasts in even the most abusive outdoor environments. We proudly make DEF Urea Pump Systems in the USA. Here are the specifications:

Flow Capacity: 100-300 GPH
Pressure Capacity: 100 PSI
Pump Type: Centrifugal with Stainless construction
Standard Accessories: All Stainless Steel
Inlet Strainer
Outlet Check Valve
Leak Sensor
Inlet Suction Gauges
Outlet Pressure Gauges Flow Switches
High Level Sensor
Level Transmitter and Display
Construction: Stainless Steel Enclosure, Welded Steel Construction

Preferred Utilities is committed to helping facilities meet the most stringent demands for emissions reduction. With innovations such as DEF implementation and SCR, support from Preferred can help you adapt your systems and take advantage of the most efficient and effective ways of reducing emissions.

 

With the NEW and improved Opacity Monitor model JC-30D with Automatic Calibration, LED light source, and light detector, no onsite operator is required to calibrate the system. When the system receives a signal from the burner fan, it auto calibrates opacity by itself, compensating for dirty lenses.

Auto-Calibrate coupled with the new brighter LED light source allows the lenses to go without cleaning for up to 9 times as long as previous versions. This saves on labor cost for unmanned boiler rooms and operators can focus on other tasks in their boiler room. The improved light sensor now directs light only from the light source and eliminates misreading from tramp light, which can cause problems in the boiler room.

The new JC-30D is an easy retrofit for older JC-30D models, as well as other opacity monitors. Durable quality and made in the U.S.A.!

 

Our SECOND burner and controls retrofit for Bates College on one of their existing 700 HP Cleaver-Brooks™ boilers so they can burn ENSYN Renewable Fuel Oil (100% renewable fuel source derived from trees) as their primary heating source! With our help, Bates is on the verge of reaching their 2020 emissions and carbon reduction milestones while increasing combustion efficiency and reducing electric consumption.

Read the full story here.

 

 

An innovative, low-cost combustion solution to meet sustainability goals, emission reduction requirements, and extreme efficiency improvements.

This installation is at an American college with aggressive sustainability goals. Our solution for them–a burner and controls upgrade on one of their existing 700 HP Cleaver Brooks boilers to achieve their emission and carbon reduction milestones, while increasing combustion efficiency and reducing electric consumption. This upgrade will NOT require the removal of the Cleaver Brooks front or rear doors, but acts as a direct replacement “insert” for the existing Cleaver Brooks burner, while reusing the existing Cleaver Brooks combustion fan and making no cuts or modifications in the original front door.

This specialized API-Ranger burner and controls upgrade will allow the college to burn ENSYN Renewable Fuel Oil, an 85% carbon neutral renewable fuel, along with natural gas or #2 oil.

American made and supported, our technological advancements continue to out-pace the competition.

 

For reliability, longevity and unmatched service, choose Preferred!

This Preferred JC-CDDF2 chief dispatcher model has been in service since the 1970’s in a Newport, RI facility. When one of the relay sockets finally broke, they called Preferred.

Although this unit has been out of production for nearly 20 years, we still had replacement parts in stock and original wiring diagrams for the installation of the new parts.

Built in the USA and built to last!