Morton Grove, Ill. — (January 21, 2014) — Xylem Inc., a leading global water technology company focused on addressing the world’s most challenging water issues, launched the Bell & Gossett® brand ecocirc® XL large wet rotor circulator today at the 2014 Air-Conditioning, Heating, Refrigerating Exposition (AHR Expo) – the world’s largest HVACR event. The energy efficient circulator leverages state-of-the-art hydraulic performance, advanced motor design and smart communications capabilities to improve operations across a broad range of commercial HVAC and plumbing applications.

Featuring an easy-to-use digital interface that provides the user with real-time pump performance information through proactive self-monitoring, the ecocirc XL significantly reduces system downtime for maximum operational efficiency. This intuitive human machine interface (HMI) keeps users informed of key pump settings, such as operating or fault modes, flow control and set point, further decreasing setup and installation time. Additional settings and access to in-depth historical pump data can be obtained through a laptop, or an optional Wi-Fi module and standard Wi-Fi enabled device (i.e., tablet or smartphone). Advanced control options, including Modbus or BACnet access, provide dynamic system management.

“The ecocirc XL makes it easy for our customers to achieve the operational efficiencies and energy savings they need, while improving system performance and keeping building environments comfortable,” said Mark Handzel, vice president, Product Regulatory Affairs and director, HVAC & Commercial Buildings Business Unit, Xylem. “Facility managers, building owners and maintenance personnel are looking for smart solutions that can be easily monitored. The ecocirc XL provides this.”

The ecocirc XL also features an electronically commutated permanent magnet (ECM) motor that enables pump operations to match demand, delivering superior energy efficiency and cost savings. An automatic night setback function turns the pump off when there’s no demand, and essential controls, including proportional or constant pressure control and manual set constant speed, come as standard programming options, further reducing energy consumption and costly utility bills.

Diverse environments including universities and office complexes, airport terminals, manufacturing facilities and other similar buildings can benefit from the ecocirc XL’s broad range of performance characteristics, which reduce the number and types of pumps required for typical building HVAC and plumbing installations. Available in cast iron and lead free bronze, the ecocirc XL meets heating and chilled water requirements in a single pump with an extensive temperature range of 14 degrees Fahrenheit to 230 degrees Fahrenheit. Optimized pump hydraulics support operational efficiencies across a broad spectrum of head and flow requirements for commercial HVAC and plumbing applications.

“The ecocirc XL is more than just a pump. It’s total system technology supported by an expert network of Bell & Gossett representatives and our exclusive ESP Plus selection software,” said Handzel. “We want to give our customers world-class service, tools and training to get the most from their experience with the ecocirc XL and Bell & Gossett.”

Effective system sizing and selection to realize even greater system efficiencies can be accomplished through Bell & Gossett ESP-System Syzer® software or the mobile application for smartphones.

For more information on the ecocirc XL, visit power-of-e.com. To contact a Bell & Gossett representative, go to http://bellgossett.com/sales-service/.

About Xylem

Xylem (NYSE: XYL) is a leading global water technology provider, enabling customers to transport, treat, test and efficiently use water in public utility, residential and commercial building services, industrial and agricultural settings. The company does business in more than 150 countries through a number of market-leading product brands, and its people bring broad applications expertise with a strong focus on finding local solutions to the world’s most challenging water and wastewater problems. Xylem is headquartered in Rye Brook, N.Y., with 2012 annual revenues of $3.8 billion and approximately 12,900 employees worldwide. Xylem has been named to the Dow Jones Sustainability World Index for the last two years for advancing sustainable business practices and solutions worldwide.

The name Xylem is derived from classical Greek and is the tissue that transports water in plants, highlighting the engineering efficiency of our water-centric business by linking it with the best water transportation of all — that which occurs in nature. For more information, please visit us at www.xyleminc.com.

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Orlando, Fla. — Feb. 5, 2014 — Xylem Inc., a leading global water technology company focused on addressing the world’s most challenging water issues, is enhancing energy efficiency through its Flowtronex brand’s pumping and irrigation products, as showcased at the 2014 Golf Industry Show (GIS), held February 5-6 in Orlando, Fla. Xylem will exhibit its broad product portfolio, including a new pump controller and a host of others at booth #3120.

The annual GIS trade show attracts more than 13,000 attendees, including more than 6,000 qualified buyers in the premier learning and networking event serving the business of golf course and club facilities. Along with the trade show, GIS also holds the Golf Course Superintendents Association of America (GCSAA) golf championship and GCSAA and National Golf Course Owners Association (NGCOA) educational conferences as part of the five-day event.

“At GIS, we’re celebrating the Flowtronex legacy of providing quality, energy-efficient equipment for the past 30 years,” said Mark Heuchert, global aftermarket manager, Flowtronex, Xylem Applied Water Systems business unit. “We’re looking forward to meeting with customers to renew existing relationships and to show others why 79 of the 100 top golf courses in the U.S. use our products.”

On display at the show will be the new Oasis EX, the next generation of simple, yet high-performing pump controllers from Flowtronex, a Xylem brand. With modern features such as remote monitoring, Web-enabled control features and advanced water monitoring, the controller will make any pump station work more efficiently and can be used to retrofit existing stations.

Other recent products on display at GIS 2014 will include:

• Flowtronex Silent Storm vertical, horizontal and express vertical frequency drive (VFD) pumping systems: Designed for easy set and start, Silent Storm integrates precision computer control with variable-frequency drive efficiency to provide golf course superintendents with fully programmable stations.
• Flowtronex PACE integrated pump controller and PACE 5.0: The pump controller provides a new level of advanced integration for remote monitoring, control, reporting and diagnostics of the pump station. In addition to its first in the industry features such as Web-browser based navigation, power consumption recording and integration to the irrigation central, users can review detailed reports and logs of historic power usage with the PACE 5.0 upgrade.
• Water Equipment Technologies (WET) reverse osmosis (RO) systems: These RO systems provide up to 600,000 gallons per day (GPD) of water for irrigation from brackish water wells.
• Goulds Water Technology 316SS stainless steel vertical impellers: The vertical turbine impellers are produced with a new, high-grade investment cast 316 stainless steel (316SS) material. This is the first product line available on the market with high-grade stainless steel impellers as a standard. 316SS is known for its enhanced ability to resist damage due to corrosion and abrasives.

“The introduction of the Oasis EX, along with our existing product line, enable golf course owners to take full control of their golf course operations,” said Heuchert. “Flowtronex products make sustainability obtainable for any golf course, no matter the size or location.”

Flowtronex systems are manufactured using top quality components and process, and all pump systems are Underwriter’s Laboratories (UL)-listed.

With more than 30 years of system experience and more than 15,000 pumping systems installed worldwide, Flowtronex experts will be on-site to provide solutions for golf courses and resorts aiming to improve efficiency, water management and operations.

To learn more about Xylem and its Flowtronex brand, come to booth 3120 at the show or visit www.flowtronex.com.

About Xylem

Xylem (XYL) is a leading global water technology provider, enabling customers to transport, treat, test and efficiently use water in public utility, residential and commercial building services, industrial and agricultural settings. The company does business in more than 150 countries through a number of market-leading product brands, and its people bring broad applications expertise with a strong focus on finding local solutions to the world’s most challenging water and wastewater problems. Xylem is headquartered in Rye Brook, N.Y., with 2013 revenues of $3.8 billion and more than 12,500 employees worldwide. Xylem was named to the Dow Jones Sustainability World Index for the last two years for advancing sustainable business practices and solutions worldwide.

The name Xylem is derived from classical Greek and is the tissue that transports water in plants, highlighting the engineering efficiency of our water-centric business by linking it with the best water transportation of all — that which occurs in nature. For more information, please visit us at www.xyleminc.com.

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Orlando, Fla. — Feb. 5, 2014 — Xylem Inc., a leading global water technology company focused on addressing the world’s most challenging water issues, announced its new Oasis EX pump controller from its Flowtronex brand at the 2014 Golf Industry Show (GIS), held February 5-6 in Orlando, Fla. The simple yet high performing controller will be on display at Xylem’s booth, #3120.

The Oasis EX delivers modern features, such as remote monitoring, Web-enabled controls and advanced water measurements, to ensure efficiency in pump stations. Specifically engineered for retrofitting existing stations, the unit is an easy, cost-effective replacement to old pump controllers.

“With more than 30 years of experience in the irrigation market, we’ve learned our customers want products that are increasingly more efficient, making their businesses more profitable,” said Mark Heuchert, global aftermarket manager, Flowtronex, Xylem Applied Water Systems business unit. “The Oasis EX delivers on this front and ensures our customers are maximizing water and energy efficiency, while reducing operating costs and increasing productivity.”

The pump controller delivers quality production by hitting on four key points:

• Energy efficiency: Oasis EX enables the user to control a high efficiency variable frequency drive (VFD) to optimize energy use, while maximizing the motor and pump life.
• Efficient water management: The controller delivers high-level control over resources and ensures efficient water use. By monitoring daily flow rates, superintendents can rest assured that overwatering will not occur.
• Eco-friendly and economical operations: Courses that use granular fertilizer can significantly reduce water use by switching to the Oasis EX fertigation system. Cost savings of up to 50 percent can be realized on fertilizer and chemicals, while the system significantly improves the health and quality of the turf and soil.
• Enhanced troubleshooting: The unit includes the most advanced and simple-to-integrate operating system on the market, and details fault history, parameters and indicators. The intuitive design can be navigated quickly using a color touch-screen or fully-equipped numerical keyboard.

Flowtronex systems are manufactured using top quality components and processes, and are Underwriter’s Laboratories (UL)-listed. The brand has installed more than 15,000 pump stations worldwide and its experts provide an extensive customer service offering.

To learn more about the new Flowtronex Oasis EX, come to booth 3120 at the show or visit http://unitedstates.xylemappliedwater.com/brands/flowtronex/service-technical-support/.

About Xylem

Xylem (XYL) is a leading global water technology provider, enabling customers to transport, treat, test and efficiently use water in public utility, residential and commercial building services, industrial and agricultural settings. The company does business in more than 150 countries through a number of market-leading product brands, and its people bring broad applications expertise with a strong focus on finding local solutions to the world’s most challenging water and wastewater problems. Xylem is headquartered in Rye Brook, N.Y., with 2013 revenues of $3.8 billion and more than 12,500 employees worldwide. Xylem was named to the Dow Jones Sustainability World Index for the last two years for advancing sustainable business practices and solutions worldwide.

The name Xylem is derived from classical Greek and is the tissue that transports water in plants, highlighting the engineering efficiency of our water-centric business by linking it with the best water transportation of all — that which occurs in nature. For more information, please visit us at www.xyleminc.com.

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Morton Grove, Ill. – February 11, 2014 – McDonnell & Miller^®, a brand of Xylem Inc., a leading global water technology company focused on addressing the world’s most challenging water issues, was recently recognized by the Heating Air-conditioning & Refrigeration Distributors International (HARDI) for its dedicated involvement as a manufacturer.

McDonnell & Miller celebrated a 50-year milestone in its relationship with the leading HVACR trade association. Glenn Huse, global product line manager, engineered specialties, HVAC marketing, Xylem Applied Water Systems, accepted the company’s award at the 2013 HARDI Annual Conference held December 7 to 10 in Phoenix, Ariz.

“We are honored to receive this recognition for our many years of collaboration with HARDI,” said Mark Handzel, vice president, Product Regulatory Affairs, and director, HVAC Commercial Buildings Business Unit, Xylem. “Xylem and its brands value strong relationships with industry professionals, including distributors and trade associations. Staying involved in our industries positions the company strongly across all business markets.”

This year, McDonnell & Miller was one of three recipients that received an award for 50 years of involvement with HARDI. HARDI represents more than 460 wholesale companies, more than 300 manufacturing associates and nearly 125 manufacturer representatives. Association members represent an estimated 85 percent of the dollar value of the HVACR products sold through distribution. For more information about HARDI and its members, visit www.hardinet.org.

For more information about McDonnell & Miller, visit www.mcdonnellmiller.com.

About Xylem

Xylem (XYL) is a leading global water technology provider, enabling customers to transport, treat, test and efficiently use water in public utility, residential and commercial building services, industrial and agricultural settings. The company does business in more than 150 countries through a number of market-leading product brands, and its people bring broad applications expertise with a strong focus on finding local solutions to the world’s most challenging water and wastewater problems. Xylem is headquartered in Rye Brook, N.Y., with 2013 revenues of $3.8 billion and more than 12,500 employees worldwide. Xylem was named to the Dow Jones Sustainability World Index for the last two years for advancing sustainable business practices and solutions worldwide.

The name Xylem is derived from classical Greek and is the tissue that transports water in plants, highlighting the engineering efficiency of our water-centric business by linking it with the best water transportation of all — that which occurs in nature. For more information, please visit us at www.xyleminc.com.

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Morton Grove, Ill. — Feb. 20, 2014 — Xylem Inc., a leading global water technology company focused on addressing the world’s most challenging water issues, announced today that the Saajhi Stepping Pump, a product designed specifically for the smallholder farmer and offered through its Essence of Life (EOL) initiative, helped the company receive a certification that qualifies it for Indian rural government programs.

The Certification Report, issued by the Indian State Level Farm Machinery Training and Testing Center, is given by the Ministry of Agriculture’s Department of Agriculture and Cooperation in Odisha, India. Companies must pass a lengthy certification process at a government endorsed testing site, ensuring quality and ease of product operation. After approximately five months, Xylem received the report that its Saajhi Stepping Pump qualifies for government programs. As part of EOL, the company is focused on improving the economic mobility of farmers in rural agriculture.

“This report validates to our rural customers that we produce a well built product that is designed and engineered with their specific needs and wants in mind,” said Keith Teichmann, director of innovative networks and marketing, Xylem Inc. “The certification enables us to further empower smallholder farmers to improve their economic outlook by opening us, and the product, up to major government programs.”

The Saajhi Stepping Pump is a manual stepping pump that was engineered, designed and vetted within rural agricultural markets as an essential water pumping solution for smallholder farmers. The pump enables farmers to increase revenue, reduce labor and maximize crop output, helping improve food supply and security, and in turn boosting the local economy.

EOL is a unique business model that leverages a hybrid value chain – an innovative public-private collaboration strategy with its roots in academic thought leadership – to break through the physical, economic and other entrenched factors that underlie the persistence of agricultural underperformance. It delivers definitive shared value through innovative rural water management solutions, addressing the fundamental needs of the economic base of the pyramid and supporting the inherent capability of this group to move upward in the economic strata.

To learn more about Xylem and its Essence of Life initiative, visit http://www.xyleminc.com/en-us/sustainability/essence-of-life/Pages/default.aspx.

About Xylem

Xylem (XYL) is a leading global water technology provider, enabling customers to transport, treat, test and efficiently use water in public utility, residential and commercial building services, industrial and agricultural settings. The company does business in more than 150 countries through a number of market-leading product brands, and its people bring broad applications expertise with a strong focus on finding local solutions to the world’s most challenging water and wastewater problems. Xylem is headquartered in Rye Brook, N.Y., with 2013 revenues of $3.8 billion and more than 12,500 employees worldwide. Xylem was named to the Dow Jones Sustainability World Index for the last two years for advancing sustainable business practices and solutions worldwide.

The name Xylem is derived from classical Greek and is the tissue that transports water in plants, highlighting the engineering efficiency of our water-centric business by linking it with the best water transportation of all — that which occurs in nature. For more information, please visit us at www.xyleminc.com.

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Morton Grove, Ill. – March 27, 2014 – It’s time to spring into action and engage in continuing education. Bell & Gossett^®, a brand of Xylem Inc., and a leader in education for the hydronic heating and plumbing industries, announced its second quarter 2014 seminar schedule for the Little Red Schoolhouse^®.

“Little Red Schoolhouse classes provide insights into Xylem’s application expertise, while sharing of-the-moment trends in the industry and innovative processes,” said Larry Konopacz, manager, training and education, Little Red Schoolhouse, Xylem. “We are committed to instructing participants on how to develop and deliver holistic solutions to their customers, as well as advancing the commercial buildings industry as a whole.”

The seminars, taught by LEED® Accredited Professionals, are tailored to engineers, wholesalers and contractors, covering HVAC hydronic and plumbing systems. The Little Red Schoolhouse is authorized to offer International Association for Continuing Education & Training (IACET) continuing education units (CEUs) for its programs that qualify under the American National Standards Institute/IACET Standard. Upon successful completion of a seminar, 1.7 CEUs are awarded to attendees.

Little Red Schoolhouse seminars and dates for the second quarter include:

Steam Systems Design & Application Seminar                                              April 7-9

Modern Hydronic Heating Systems – Basic Seminar*                                   April 14-16

Design & Application of Water Based HVAC Systems Seminar*                   April 28-30

Service & Maintenance of Water Based HVAC Systems Seminar                 May 5-7

Plumbing Systems Design Seminar                                                               May 19-21

Design & Application of Water Based HVAC Systems Seminar*                   June 2-4

Large Chilled Water System Design Seminar*                                               June 9-11

Modern Hydronic Heating Systems – Advanced Seminar*                           June 23-25

* Seminar approved by Green Building Certification Institute to provide credit toward the credential maintenance requirements of the LEED Green Associate and LEED AP certifications.

To view the spring 2014 Little Red Schoolhouse promotional video, visit: www.content.jwplatform.com/previews/4xz0HR59-EEzXX5iN.

Since 1954, the Little Red Schoolhouse has trained more than 55,000 engineers, contractors and installers globally in the proper design, installation and maintenance of hydronic systems.

For seminar descriptions and enrollment information, visit www.bellgossett.com/training-education/. Reservations must be made through a Bell & Gossett representative. A complete list of representatives, including contact names and phone numbers, is listed on the website.

About Xylem

Xylem (XYL) is a leading global water technology provider, enabling customers to transport, treat, test and efficiently use water in public utility, residential and commercial building services, industrial and agricultural settings. The company does business in more than 150 countries through a number of market-leading product brands, and its people bring broad applications expertise with a strong focus on finding local solutions to the world’s most challenging water and wastewater problems. Xylem is headquartered in Rye Brook, N.Y., with 2013 revenues of $3.8 billion and more than 12,500 employees worldwide. Xylem was named to the Dow Jones Sustainability World Index for the last two years for advancing sustainable business practices and solutions worldwide.

The name Xylem is derived from classical Greek and is the tissue that transports water in plants, highlighting the engineering efficiency of our water-centric business by linking it with the best water transportation of all — that which occurs in nature. For more information, please visit us at www.xyleminc.com.

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Morton Grove, Ill. – April 8, 2014 – Xylem Inc., a leading global water technology company focused on addressing the world’s most challenging water issues, introduced its Bell & Gossett TechnoForce XLS pump station today, helping building owners/operators improve water management, while realizing efficiency and cost savings in commercial, industrial and specialty applications.

The TechnoForce XLS enables facility managers to meet a variety of design specifications by providing energy-efficient and reliable control to up eight pumps from a single system solution to meet head and flow requirements of a building. Providing up to 300 pounds per square inch (PSI) of pressure boosting with vertical multi-stage pumps and stainless steel piping, the system quickly moves water to where it is needed.

The powerful XLS programmable logic controller (PLC) architecture commercializes features normally associated with an industrial PLC controller, including Ethernet, wireless and smart phone access for advanced monitoring and controls. Data trending and energy logging capabilities enable operational adaptability that support critical water, energy and cost savings. The Technoforce XLS also features a flexible design for simplified installation and setup. Customizable alarm notifications and a 5.7-inch color touchscreen interface provide additional operator-friendly features.

“Customers save time and money by integrating operations and monitoring through remote access available on the TechnoForce XLS,” said John Collins, global product manager, packaging systems. “By making adjustments to settings in real-time, users realize enhanced convenience and flexibility, which translates to not only bottom-line savings, but also more comprehensible operational processes.”

Additional features of the TechnoForce XLS system include:

• Duplex, triplex and quadplex arrangements
• Single and three phase
• Generator power mode
• ASHRAE 90.1 sensorless control
• Bell & Gossett’s Technologic indoor and outdoor-rated drives furnished with individually fused disconnect switches and bypass capability
• Common building management system protocols.

The new TechnoForce XLS is compliant with American Society of Heating, Refrigeration and Air-Condition Engineers (ASHRAE 90.1) and Underwriters Laboratories (UL) safety standards. It is also pending certification by the American National Standards Institute (ANSI)/National Sanitation Foundation (NSF-61).

To learn more about Bell & Gossett or the TechnoForce XLS pump station, visit: http://bellgossett.com/package-pumping-systems/pressure-booster-packages/technoforce-xls/.

About Xylem

Xylem (XYL) is a leading global water technology provider, enabling customers to transport, treat, test and efficiently use water in public utility, residential and commercial building services, industrial and agricultural settings. The company does business in more than 150 countries through a number of market-leading product brands, and its people bring broad applications expertise with a strong focus on finding local solutions to the world’s most challenging water and wastewater problems. Xylem is headquartered in Rye Brook, N.Y., with 2013 revenues of $3.8 billion and more than 12,500 employees worldwide. Xylem was named to the Dow Jones Sustainability World Index for the last two years for advancing sustainable business practices and solutions worldwide.

The name Xylem is derived from classical Greek and is the tissue that transports water in plants, highlighting the engineering efficiency of our water-centric business by linking it with the best water transportation of all — that which occurs in nature. For more information, please visit us at www.xyleminc.com.

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This is a simple way to check the resistance of boiler water that will provide a value seen on the control that can be compared to the chart below. This comparison will help determine if the control is sensitive enough for the application. Systems with any PS or 750 electronic LWCO can be tested utilizing this procedure.

Note: All tests should be done using a Digital MultiMeter (DMM) set to the low AC voltage scale.

1. Turn off power to the unit.
2. Connect the negative lead from the DMM to the probe connection on PCB board.
3. Connect the positive lead from the DMM to the ground (chassis or brass part of probe units).
4. Turn on power to the unit and record the meter reading.
5. Compare the meter voltage reading with the voltage scale on the chart below and plot the resistance reading.
6. Determine if the boiler water resistance is within control specifications.

The best and easiest way to check the operation of the unit is to isolate and test it as an independent control. Testing it this way will determine if there are issues with the control, or issues with the wiring to the control. The hints and tips mentioned in the text below can be used to check the operation of any current or previous models, including PS-800, PS 850, and Series 750.

Warning: High voltages will be present when performing some of the tests. USE EXTREME CAUTION.

• Ensure there is proper voltage to the unit.
  • 24 volts at terminals H and N on PSE-802 units.
  • 120 volts at terminals H and N on PSE-801 units.
• Disconnect the probe lead from the probe. The red light should turn on when doing this.
  • Check the position of the relay contacts. C to W should be closed, and C to B should be open.
• Short the probe lead to the chassis. The red light should turn off during this operation (for manual reset units, press the Reset button).
  • Check the position of the relay contacts. C to W should be open. C to B should be closed. 4. If these steps are performed correctly, the control should be working properly.

A common issue with the PSE Series is that the control is not actuating the burner. Answering the following questions may resolve this issue.

• Is there a continuous source of uninterrupted power at terminals H and N?
• Ensure that the unit has power to these terminals at all times. The control will be in low water mode when there is no power to these terminals. 2. Is there voltage at terminal C?
• Some systems require a jumper from H to C. Check the boiler manufacturer’s wiring schematic to determine if this is necessary.
• Is the water conductive enough?
• The voltage from the probe to the ground with water in the boiler and the unit turned on should be 4 volts or less. Any higher reading indicates that the water is not conductive enough. If this is the case, add boiler treatment on steam boilers to increase conductivity of the water. Water/glycol mixes higher than 50/50 can decrease conductivity on hot water boilers.
• Is the probe in the water?
• The tip of the probe should be in the run of the pipe on hot water boiler systems.
• What type of sealant was used on the probe threads?
• The use of PTFE tape or exotic thread sealant (BlueBlock, RectorSeal, etc.) can act as an insulator blocking the probe voltage’s current path. Remove the probe and reinstall using a pipe dope or boiler grease.

This document serves as a reminder that Domestic Pump Condensate units should not be pressure leak tested. Note the warning labels below. In its current form, each CC (CB, CBE, CS, CHD, and CED) Condensate unit has four (4) large warning labels attached to it. The largest label is 12-inches long by 6-inches tall.

Typically, these labels are attached to the top of the unit (near where the vent connection is) on the control panel, as well as on sides of the unit so that it is visible from multiple angles.

There are additional warnings included in the Installation / Operation manual as outlined below. It is critical that Domestic Pump Condensate units not be pressure leak tested in order to maintain personnel safety and ensure the product is not damaged during system pressure leak testing.

An example of how pressure leak testing can go wrong, follows. A contractor called the factory and asked how quickly a new CC unit receiver could be shipped to a job site. After providing the information, I asked the contractor why the receiver was being replaced. The end-user also had a U tube heat exchanger in their steam system and the tube bundle had failed, needing replacement.

After installing the new tube bundle into the heat exchanger shell, the contractor wanted to conduct a pressure leak test on the system to ensure that there would be no leaks. He attempted to charge the system with 15 psi air pressure by screwing a pipe cap onto the top of the vent pipe. The contractor relayed to me that as he was increasing the pressure in the system, something didn’t sound right but before he could stop and check what was causing the noise, the cast iron receiver on the system failed.

Photo 1 illustrates the top and side wall of the receiver missing after it failed.

Photo 2 shows a portion of the sidewall and the float switch for the second pump where it landed with enough force to lodge in a stack of pallets nearby.

When I asked if anyone was hurt when this occurred, the contractor replied, “No, fortunately the only damage was to the receiver, the stack of pallets, and my dignity. I’ll never make that mistake again. Next time I’ll read the manuals and warning labels that were on the unit.” Luckily, the contractor will get another chance to read those instructions and warnings. Condensate return and boiler feed units on steam systems are typically vented to the atmosphere. In Domestic Pump products, the vent connections are generously sized to prevent these occurrences, but only if properly piped and not reduced or plugged. For your safety and to protect your professional reputation, always remember to properly install the vent connection and never restrict, reduce or plug it. Always isolate your condensate return or boiler feed unit from the system if leak tests are required.

Thank you for reading this important reminder about proper venting of Domestic Pump Condensate equipment.

CHICAGO — May 17, 2014 — The taste of water no longer has to be compromised.  Xylem, a leading global water technology company focused on addressing the world’s most challenging water issues, launched Filtration by Flojet today at the 2014 National Restaurant Association (NRA) show. The system uses integrated membrane pre-activated carbon technology to improve water taste and appearance, better protects dispense equipment and mitigates health concerns in foodservice applications.

Filtration by Flojet removes chlorine and chloramine odor and taste from municipal water by leveraging carbon block technology, proven to have more than four times the capacity to remove unwanted water characteristics as competitive pre-coat filters. Carbon block enables users to activate the filtration cartridge almost immediately, eliminating the flush out process associated with carbon powder units, improving water use efficiency and reducing dispensing downtime.

“Filtration by Flojet enables our customers to provide consistent quality beverages, while decreasing costly unscheduled service calls and lost productivity associated with corrosion and abrasion from sediment,” said Dave Allen, product group manager, Xylem’s Applied Water Systems business unit. “Beverage dispense operators are looking for complete control over their product and this filtration system is a cost-effective, long-term, cartridge-based solution.”

In addition to the cartridge, the system includes a high flow head, built to service flow rates of up to five gallons per minute with minimal pressure loss, ensuring the device delivers results. The unit’s enhanced pleated membrane has six times the surface area of competing pre-coat products, enabling high volumes of water to quickly pass through the component, keeping dispensing operations moving on schedule. Filtration by Flojet is also scalable, adapting as customer operations grow and simplifying cartridge upgrades.

Available in single, double or triple action sizes, the system can be adjusted for use in post-mix beverage, hot beverage and ice making applications. Retrofitcartridges are available to improve performance and provide the best cost per gallon in other widely used system configurations. Filtration by Flojet is compliant with NSF-42, the Federal Drug Administration and the Code of Federal Regulations Title 21.

To learn more about Filtration by Flojet, stop by Xylem booth 3854 at NRA 2014, or visit http://foodservice.xylem.com.

About Xylem

Xylem (XYL) is a leading global water technology provider, enabling customers to transport, treat, test and efficiently use water in public utility, residential and commercial building services, industrial and agricultural settings. The company does business in more than 150 countries through a number of market-leading product brands, and its people bring broad applications expertise with a strong focus on finding local solutions to the world’s most challenging water and wastewater problems. Xylem is headquartered in Rye Brook, N.Y., with 2013 revenues of $3.8 billion and more than 12,500 employees worldwide. Xylem was named to the Dow Jones Sustainability World Index for the last two years for advancing sustainable business practices and solutions worldwide.

The name Xylem is derived from classical Greek and is the tissue that transports water in plants, highlighting the engineering efficiency of our water-centric business by linking it with the best water transportation of all — that which occurs in nature. For more information, please visit us at www.xyleminc.com.

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CHICAGO — May 17, 2014 — Xylem, a leading global water technology company focused on addressing the world’s most challenging water issues, will share innovations for improving the quality and consistency of beverage dispensing operations in foodservice applications at the 2014 National Restaurant Association (NRA) show, May 17-20 in Chicago at McCormick Place. At booth 3854, the company is launching a new product and presenting several more developments in energy efficiency and advanced solutions for improved restaurant performance.

Flojet, a Xylem brand, will introduce Filtration by Flojet, a system that uses integrated membrane pre-activated carbon technology to remove chlorine and chloramine odor and taste in potable water, improving its appeal and quality.

“NRA gives us the opportunity to share our progressive technologies, broad range of system solutions and applications expertise in the food and beverage industry with our customers,” said David Webber, regional segment marketing director, Americas, Xylem’s Applied Water Systems business unit.

Xylem will also highlight upgrades to the V-jet series of low flow, high-pressure rotary vane pump heads. These updates improve product reliability, making it cost-effective for restaurants and coffee shops looking to invest in a high performance product that requires minimal repair or servicing.

“Our customers are seeking advanced and dependable solutions that are energy efficient, deliver consistent product with great taste, and keep operational expenses to a minimum,” Webber added. “The Flojet brand continues to evolve to address these customer demands and trends in the dispense industry.”

Other Xylem highlights at this year’s NRA show include precision thermometers, data loggers and fat oil monitors that improve quality control and food safety.

For more information about Xylem’s presence at NRA 2014, stop by booth 3854 or visit foodservice.xylem.com.

About Xylem

Xylem (XYL) is a leading global water technology provider, enabling customers to transport, treat, test and efficiently use water in public utility, residential and commercial building services, industrial and agricultural settings. The company does business in more than 150 countries through a number of market-leading product brands, and its people bring broad applications expertise with a strong focus on finding local solutions to the world’s most challenging water and wastewater problems. Xylem is headquartered in Rye Brook, N.Y., with 2013 revenues of $3.8 billion and more than 12,500 employees worldwide. Xylem was named to the Dow Jones Sustainability World Index for the last two years for advancing sustainable business practices and solutions worldwide.

The name Xylem is derived from classical Greek and is the tissue that transports water in plants, highlighting the engineering efficiency of our water-centric business by linking it with the best water transportation of all — that which occurs in nature. For more information, please visit us at www.xyleminc.com.

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Morton Grove, Ill. — July 8, 2014 — Xylem Inc., a leading global water technology company focused on addressing the world’s most challenging water issues, announced today it has been named the Social Impact professional category winner of the Core77 awards, core77designawards.com/2014/recipients/saajhi-stepping-pump/. The recognition was given to the Saajhi Stepping Pump, a product developed as part of the company’s Essence of Life (EOL) initiative.

“This award is a testament to our revolutionary vision for the EOL business and the work our team is doing every day on the ground and in rural communities,” said Keith Teichmann, director of innovative networks and marketing, Xylem. “The Saajhi Stepping Pump is improving the way smallholder farmers tend to their crops and we’re humbled and honored to field a product capable of improving the livelihoods of those in these communities.”

Recognizing excellence in all areas of design enterprise, the Core77 Design Awards celebrate the richness of the design profession and its practitioners. In 2014, there were 17 categories of entry, providing designers, researchers and writers a unique opportunity to communicate the intent, rigor and passion behind their efforts. From client work and self-initiated projects to entrepreneurial and pro-bono engagements, the Core77 Design Awards embrace a wide diversity of enterprise: commercial, cultural, social, environmental and discursive.

Launched in 2013, the Saajhi pump was designed for rural agriculture as a solution for smallholder farmers to irrigate their land more efficiently. The pump uses human weight and motion to move water, resulting in three times or greater crop yield compared to rain-fed fields, and more than a 25 percent reduction in labor time compared to traditional furrow irrigation. Ultimately, the product aids farmers in cultivating crops for sale, which improves their economic standing within their communities and supports sustainable rural enterprise.

The Saajhi pump is part of the EOL business model, which works with the citizen sector and public and private partners to understand the needs of and develop solutions for rural farmers in developing nations.

To hear what judges had to say about the Saajhi, visit: core77designawards.com/2014/award_category/social-impact/.

To learn more about Xylem’s Essence of Life initiative, visit xyleminc.com/en-us/sustainability/essence-of-life/Pages/default.aspx.

About Xylem

Xylem (XYL) is a leading global water technology provider, enabling customers to transport, treat, test and efficiently use water in public utility, residential and commercial building services, industrial and agricultural settings. The company does business in more than 150 countries through a number of market-leading product brands, and its people bring broad applications expertise with a strong focus on finding local solutions to the world’s most challenging water and wastewater problems. Xylem is headquartered in Rye Brook, N.Y., with 2013 revenues of $3.8 billion and more than 12,500 employees worldwide. Xylem was named to the Dow Jones Sustainability World Index for the last two years for advancing sustainable business practices and solutions worldwide.

The name Xylem is derived from classical Greek and is the tissue that transports water in plants, highlighting the engineering efficiency of our water-centric business by linking it with the best water transportation of all — that which occurs in nature. For more information, please visit us at www.xyleminc.com.

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MORTON GROVE, Ill. — July 11, 2014 — Xylem Inc., a leading global water technology company focused on addressing the world’s most challenging water issues, announced today the release of the CentriPro^TM Aquavar® intelligent pump controller. Designed for use in irrigation, agriculture and light industrial applications, the Aquavar improves efficiency and reduces setup time by up to 50 percent.

The variable frequency drive (VFD) pump controller features an application specific Start-Up Genie that guides users through quick and easy setup, saving valuable time for pump installers and operators. The Genie is a built-in, customizable program that populates and remembers set parameters, making it compatible with any centrifugal pump system. The Genie enables users to quickly make adjustments to applications without inputting multiple parameters from a cumbersome list, enabling faster commissioning.

“The Aquavar takes pump controllers to the next level of ease of use and functionality,” said Joshua Allen, product manager, drives and controls, Americas for Xylem’s Applied Water Systems business unit. “Engineered with both the customer and service operator in mind, the controller is a smart device with technological advancements that simplify operation while delivering the efficiency, consistency and stability needed for industrial applications.”

The Aquavar is backed by Xylem’s commitment to applications expertise enabling customers to purchase the full system solution – the pump,motor and controller – from one supplier. This expanded offering ensures a single point of contact for maintenance and service. Common applications include agriculture and irrigation, oil and gas, light industrial and original equipment manufacturing (OEM). 

“Our goals are to provide a large portfolio of smart products, deliver strong application expertise and be the easiest to do business with – and the CentriPro Aquavar supports those objectives,” said Allen. “Both the business owner/operator and the contractor will realize time efficiencies and cost savings by working with Xylem and taking advantage of these capabilities.”

Designed with the option of USB connectivity, Aquavar operators have the ability to commission and monitor pumps through PC software, minimizing time consuming and labor-intensive procedures associated with non-wired pump system management. Other features include native outdoor rated enclosures making the product easier and less costly to install. It also comes with the option of duplex pumping, which supports system versatility and more efficient pumping for applications where large variations in flow rates are needed.

To learn more about the Aquavar intelligent pump controller, visit http://unitedstates.xylemappliedwater.com/brands/centripro/variable-fixed-speed-pump-controllers/aquavar/.

About Xylem

Xylem (XYL) is a leading global water technology provider, enabling customers to transport, treat, test and efficiently use water in public utility, residential and commercial building services, industrial and agricultural settings. The company does business in more than 150 countries through a number of market-leading product brands, and its people bring broad applications expertise with a strong focus on finding local solutions to the world’s most challenging water and wastewater problems. Xylem is headquartered in Rye Brook, N.Y., with 2013 revenues of $3.8 billion and more than 12,500 employees worldwide. Xylem was named to the Dow Jones Sustainability World Index for the last two years for advancing sustainable business practices and solutions worldwide.

The name Xylem is derived from classical Greek and is the tissue that transports water in plants, highlighting the engineering efficiency of our water-centric business by linking it with the best water transportation of all – that which occurs in nature. For more information, please visit us at www.xyleminc.com.

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Volume 1 / Issue 2 / August 2014

How replacing a defective steam trap can save approximately $60,000 per year.

A steam trap is a self-contained control valve that opens in the presence of condensate and closes when steam is present. When the trap fails open, it will discharge steam to the return pipes. This can be very costly, especially today as energy costs continue to rise.

The relatively low cost of a regular maintenance program for steam traps can save operators thousands of dollars and the initial investment can be recovered in a short period of time.

For example, a single trap with 3/8 inch orifice discharging 100 psig of steam to the atmosphere will cause a steam loss of 652 pounds per hour. Since each pound of steam is equivalent to approximately 1,000 BTU per hour, the total loss will be 652,000 BTU per hour.

A gas-fired boiler operating at 70 percent efficiency will produce about 70,000 BTU for each therm of Natural Gas. The gas required to replace the loss of steam will then result in 652,000 BTU/hr. ÷ 70,000 BTU/therm or 9.31 therms per hour.

If natural gas costs $0.60/therm, the money wasted due to the faulty trap equals 9.31 therm of gas/hr. One therm of gas costs $0.60, which results in $5.59 per hour. If the boiler operates 241 days per year (October 1- May 1) and 10 hours per day it translates to $13,462 lost per year.

The significance of these savings increases when you consider that small steam systems usually have several traps and a larger system can have more than 1,000 traps.

Cost of Steam Trap Leaks at Various Pressures and Fuel Cost

Volume 1 / Issue 2 / August 2014

Domestic® and Hoffman® Pump Series VLR™, VL™ and HV™ Vacuum Heating Units have been around a long time and have evolved to provide the best product for our customers. Confusion regarding successive generations of controls for vacuum condensate units has prompted the following review to clarify repair part solutions for customers, contractors and service personnel.

Early vacuum condensate units provided simultaneous vacuum production and condensate return using a hydraulic discharge valve that was controlled by a mechanical float valve assembly, referred to as a pilot valve. The earliest valve for the VLR, VL and HV units was used from 1954 to 1965 (Figure 1 and 2).

Figure 1 Discharge valve 1954 to 1965, front view with pilot valve connection shown. Connection location is not representational of position on unit.

Figure 2 Mechanical Pilot valve used to control hydraulic discharge valves on combination vacuum condensate units Domestic Sereis VLR, VL and Hoffman HV.

Note the diamond shaped two-bolt discharge flange connection for identification purposes. This valve was made obsolete in 1965 and parts were discontinued in 1973. Due to other changes to the units, if the customer inquires about replacements of this valve, their only option is to replace the entire unit.

The next generation of hydraulic discharge valve was also a bellows-sealed valve that was controlled by the mechanical pilot valve. Figure 3 and 4 are the drawings from the VLR instruction manual showing the valve with its pilot valve control.

Figure 3 1965-1964 vacuum unit with hydraulic discharge valve and mechanical pilot valve.

Figure 4 Cross section of hydraulic discharge valve with mechanical pilot valve.

Note the tapered body design (larger at the top than the bottom), NPT threaded connection to the system and the cap held in place by four cap screws. This design with the pilot valve was used from 1965 until 1974. The discharge valve was part of the design change announced to the field in May 2000 Parts for the hydraulic discharge valve are no longer available. For customers inquiring about the generation that includes both the hydraulic discharge valve and the mechanical pilot valve control, retrofits can be accomplished; however, the requirement for additional components on both the unit and control panels is significant enough to recommend replacing the unit entirely.

Retrofit components include solenoid valves additional float controls to augment the existing floats, and a complete replacement control panel. This is the result of a control panel redesign in 1993, which discontinued parts for the older control panels. Costs associated with these additional components and their installation can often be more expensive than replacing the entire unit once the labor to add the replacement components is factored in.

In 1974, the mechanical pilot valve was replaced by a solenoid control valve, which was sometimes referred to as a solenoid pilot valve. Figure 5 and 6 are the drawings from the instruction manuals.

Figure 5 1974-2000 vacuum unit with hydraulic discharge valve and solenoid control.

Figure 6 Cross section of hydraulic discharge valve with solenoid control.

This design used a solenoid valve to replace the mechanical pilot valve, eliminating wear issues on the mechanical valves seat that could cause the vacuum unit’s loss of prime. The positive closure of solenoid provided better control and easier serviceability.

Parts for the hydraulic discharge valve were discontinued in 2000 and are no longer available. This design change was announced in May of that year. The announcement provided the following replacement retrofit kits that are available today to address service issues with the hydraulic discharge valve that were controlled by solenoid valves. If the old style hydraulic discharge valve is still operational – but the solenoid control has failed – replacement small size solenoids can be provided. If the original bellows-sealed discharge valve has failed, replace accordingly with:

• 180983 1-1/4” (115V) Solenoid disch. valve kit for 5,10 & 15VLR(S)
• 180984 1-1/4” (208/230V) Solenoid disch. valve kit for 5,10 & 15VLR(S)
• 180985 1-1/2” (115V) Solenoid disch. valve kit for 20 VLR(S)
• 180986 1-1/2” (208/230V) Solenoid disch. valve kit for 20 VLR(S)
• 180987 1-1/2” (115V) Solenoid disch. valve kit for 25VL(& VLS)
• 180988 1-1/2” (208/230V) Solenoid disch. valve kit for 25VL(& VLS)
• 180989 2” (115V) Solenoid disch. valve kit for 30, 40 & 65 VL(& VLS)
• 180991 2” (208/230V) Solenoid disch. valve kit for 30, 40 &65 VL(& VLS)

Current design units from May 2000 through today are shown in Figure 7.

Figure 7 Current design with solenoid discharge valve.

Note that the small hydraulic discharge control solenoid has been removed and replaced with a full size solenoid. Parts for this vintage are detailed in our current parts lists located on the product page under the LITERATURE link. For assistance in locating the appropriate literature, use the search engine to search for the specific series of vacuum condensate units that you are interested in such as the Series VLR or VL.

For additional information or help in identifying repair solutions for your vacuum condensate unit, contact your local authorized factory representative with the equipment’s original unit serial number.

Volume 1 / Issue 2 / August 2014

Steam Systems - General

Heat transfer units that use steam to produce hot water are known as indirect heaters. They are often shell and tube type heat exchangers and are generally referred to as converters, hot water generators, and instantaneous heaters. The ASME Code for Unfired Pressure Vessels is the nationally recognized authority prescribing their construction for given temperatures and pressures. The term used varies with the heating medium and the manner of application. When these heaters use steam as the heat source they are usually called steam to water converters. In steam heated converters, the water to be heated circulates through the tubes and steam circulates in the shell surrounding the outside of the tubes. This results in condensate draining to the bottom of the heat exchanger shell as the steam gives up its latent heat (Figure 1).

Figure 1 A typical steam to water heat exchanger system.

Steam to Water Heat Exchangers

The operation of the shell and tube heat exchanger is as follows. Steam enters the heat exchanger shell through the top vapor opening and surrounds the outside of the tubes. As energy is transferred through the tubes it heats the water inside the tubes. The heat transfer condenses steam inside the shell forming condensate that drops to the bottom of the heat exchanger shell. The condensate flows though the bottom condensate outlet and into a steam trap. The steam pressure in the heat exchanger shell has a direct correlation to the temperature of the condensate formed in the shell (Figure 1). The properties of saturated steam are such that the steam temperature varies with steam pressure (Table 1).

Table 1 Properties of saturated steam.

When the latent heat of vaporization is removed, the resulting condensate will be close to the saturation temperature. Depending on the system load, slight sub-cooling may occur from the bottom of the heat exchanger and the inlet piping to the steam trap. The heat exchanger should be selected to operate at the minimum possible steam pressure. This allows the lowest possible condensate temperature to discharge from the steam trap and reduces the amount of flash steam in the return system. When heating fluids up to 200°F, the heat exchanger should be selected based on 2 psig steam pressure in the shell for the most efficient system operation. This may require a slightly larger heat exchanger than one operating at higher pressure; however it will result in a smaller less expensive low pressure steam trap and a smaller steam regulating valve. The low pressure selection will also limit the maximum temperature that can occur inside the tubes, should the temperature controller fail in an open position (Figure 2).

Figure 2 Heat exchanger with modulating control valve.

It is standard practice to add a fouling factor in the heat exchanger selection. This fouling factor adds additional tube surface area to assure adequate heating after normal scale and corrosion deposits on the tube surfaces. A standard .0005 fouling factor will add 20 to 25% additional tube surface area. When the heat exchanger is new and the tubes are clean and shiny, the heat exchanger will operate at lower than design pressure even at full system load. For example, a new heat exchanger designed for 15 psi steam to heat water to 160 degrees will generally heat the full system load with 0 psi steam in the heat exchanger shell.

Heat Exchanger Selection

The heat exchanger should be selected for operation at the minimum pressure to provide the most efficient operation. The properties of saturated steam tables show a larger amount of the latent heat is available at low pressure. Less energy remains in the condensate reducing the flash steam losses. A reasonable guide would be to select a steam pressure that has a saturation temperature approximately 30°F higher than the required outlet temperature of the fluid being heated in the tubes. For fluid temperatures up to 200°F, 2 psig steam is recommended. (Table 1)

When a high steam pressure source is used, the pressure should be reduced by installing a steam pressure regulating valve or by using a combination temperature pressure regulator. After selecting the heat exchanger, the next step should be planning the installation. The heat exchanger should be mounted high enough to allow gravity drainage of the condensate from the steam trap into a vented gravity return line. If a gravity return line is not available, a condensate pump should be installed. The heat exchanger should be mounted with a pitch toward the condensate outlet. A minimum 1/2 inch pitch per 10 foot length should be provided. The heat exchanger should also be located such that removal of the tube bundle is possible.

Steam Traps

The steam trap must be capable of completely draining the condensate from the heat exchanger shell under all operating conditions. On a heat exchanger using a modulating temperature regulator to heat fluids under 212°F, the steam pressure in the shell can be 0 psig. To assure condensate drainage, the steam trap must be mounted below the heat exchanger outlet tapping and it must drain by gravity into a vented condensate return unit. When possible, the trap should be located 15 inches below the heat exchanger outlet. The 15 inches static head to the trap inlet will provide 1/2 psig static inlet pressure to the trap when the shell steam pressure is at 0 psig.

The trap should be sized based on this 1/2 psig differential pressure. A safety factor of 1.5 times the calculated full load capacity should be used to handle unusual start up loads. A float and thermostatic trap is normally the best selection for a heat exchanger. The thermostatic element quickly vents the air from the heat exchanger shell. The modulating float element provides continuous condensate drainage equal to the system condensing rate.

Failure to provide complete condensate drainage will lead to poor temperature control and possible water hammer. Any lift in the condensate return piping after the trap discharge requires a positive pressure to develop in the heat exchanger shell to provide condensate drainage. For this to occur, condensate must back up in the heat exchanger shell until enough tube surfaces are covered by condensate to build a positive steam pressure. When the positive steam pressure develops to move the condensate through the steam trap and up the vertical return line, over heating can occur on the tube side of the heat exchanger due to the positive steam pressure remaining in the shell. This results in a wide range of outlet fluid temperatures from the heat exchanger. A lift in the return line as shown above should be avoided on heat exchangers using a modulating control valve. A lift or back pressure in the steam trap return piping can flood the hat exchanger shell and cause severe water hammer as steam enters the flooded shell. The resulting water hammer can damage the steam trap, the steam regulating valve, the heat exchanger tubes and cause the gasket in the heat exchanger and trap to fail.

Trap Installation

The trap should be located below the heat exchanger shell to allow free flow o condensate into the trap. A strainer complete with a screen blow down valve should be installed ahead of the steam trap. A shut off valve should be provided in the trap discharge return line to isolate the unit for service. Unions should be provided to allow trap service or replacement. The return line from the trap discharge should be pitched into a vented condensate return unit.

Vacuum Breakers

Most steam to water heat exchangers provides a tapping in the shell to allow installation of a vacuum breaker. The vacuum breaker allows air to enter the shell when an induced vacuum occurs. Failure to install a vacuum breaker will allow the heat exchanger shell to operate at a negative pressure which may cause condensate to be held up in the shell. During light load, the heat exchanger will have a layer of steam at the top and air under the steam to provide just the right amount of heat. The vacuum breaker should be mounted on a vertical pipe 6” to 10” above the topping to provide a cooling leg. This protects the vacuum breaker from dirt and extreme temperatures.

Steam Regulator

The choice of the temperature regulating valve includes self contained temperature regulators, pilot operated regulators and pneumatic regulators. The steam inlet pressure to the regulator must be higher than the required heat exchanger operating pressure to allow flow. The available steam pressure should be at least two times the heat exchanger operating pressure to provide modulation of the regulator for good temperature control. This will also provide the smallest size steam regulator. The steam regulator should be sized based on the maximum lb./hr. of steam required by the heat exchanger. To properly size the regulator, the available inlet steam pressure and the heat exchanger design operating pressure must be known. The steam regulator should not be oversized. Over-sizing the regulator may cause the temperature to overshoot and the regulator will hunt more than a properly sized regulator. The steam regulator is normally smaller than the connecting inlet and outlet steam piping.

Regulator Installation

A steam drip trap should be installed in the steam piping ahead of all steam regulating valves. Failure to install a drip trap will allow condensate to collect in the steam piping ahead of the regulator. As the regulator opens, the mix of condensate and steam passing through the regulator may cause water hammer that can destroy the diaphragms or bellows used to operate the regulator. A steam strainer should also be installed ahead of the regulators to prevent dirt from entering the valve. Dirt can deposit on the valve seat and not allow it to close tight. The steam strainer should be installed with the screen pocket horizontally. Installation with the screen down, as commonly piped for water service, will allow a condensate pocket to form in the steam line.

This condensate pocket can carry into the main valve and cause water hammer or sluggish operation. Shut off valves, pressure gauges, a manual bypass and unions should be installed to allow proper servicing of the valves and strainers. When possible refer to the manufacturer’s installation manual for proper installation. The temperature sensing bulb should be installed as close as possible to the heat exchanger outlet. It is important that the full length of the temperature sensing bulb be inserted in the system piping. Any portion of the bulb installed in a no flow area will reduce the accuracy of temperature control. When the sensing bulb is installed in a separable well, heat transfer compound must be installed between the well and the sensing bulb to aid heat transfer. The tube side of the heat exchanger should have a continuous running recirculation pump to provide continuous flow past the sensing bulb. A minimum 20% recirculation should be provided. Pilot operated regulators with a pressure pilot require a downstream pressure sensing line. The pressure sensing line connection should be connected in a non-turbulent area downstream of the main valve; a minimum 10 pipe diameter downstream of the main valve is recommended. The steam pressure sensing connection can also be connected directly to the heat exchanger shell.

Condensate Coolers

When heat exchangers operate at high pressure, consideration should be given to the addition of a condensate cooler. The justification will depend on the size of the heat exchanger and the actual number of hours per day the unit will be in operation. With a condensate cooler, the discharge from the steam trap on the steam heat exchanger outlet is piped through a water-to-water heat exchanger. A second trap is then installed on the discharge of the water-to-water heat exchanger to maintain saturation pressure and prevent flashing and water hammer from occurring in the condensate cooler. A separate thermostatic trap is installed to allow direct air venting of the steam heat exchanger into the vented return line downstream of  the condensate cooler (Figure 3) .

Figure 3 Installation with condensate cooler.

The water-to-water heat exchanger design differs from a steam heat exchanger. The water-to-water heat exchanger has internal baffles to direct the water flow across the tubes to improve heat transfer. Water-to-water heat exchangers are externally distinguishable as the shell inlet and outlet tapping’s are the same size; steam heat exchangers have a large vapor opening in the top of the shell and a smaller condensate outlet in the bottom. The fluid in the condensate cooler tubes may be the inlet water to the steam heat exchanger tubes. When the initial temperature of the fluid is too high to cool the condensate below 212°F, a separate fluid may be hated. Preheating domestic hot water or preheating boiler make up water are two possibilities.

Morton Grove, Ill. – Sept. 9, 2014 – Homeowners seeking qualified advice on all things water, can find it on a new website designed to answer residential water and plumbing questions. Xylem Inc., a leading global water technology, has launched a residential consumer website, hosted by its Goulds Water Technology (GWT) brand. The tool will help inform end users and connect them with GWT professional installers for home water management.

In the Ask the Expert section of the website, consumers’ questions on everything from water pressure to wastewater will be handled by a team of experts that includes engineers, professional dealers, installers and DIYers.

“The residential website is designed to help homeowners identify potential water problems, submit questions and highlight water considerations they may be unfamiliar with,” said Susan O’Grady, Manager of Communications for Global Residential & Specialty segment, Xylem Applied Water Systems (AWS). “These questions and answers will then be catalogued in an online library to serve as a resource for consumers to solve their common and not-so-common water problems.”

Topics on the website highlight:

• Wastewater and drainage – Helps homeowners understand sump pumps and offers suggestions for proper plumbing maintenance.
• Water pressure – Outlines tips and products that help provide constant water pressure throughout the home.
• Well care and maintenance – Provides educational resources and insight on the best ways to safely utilize groundwater.
• Lawn and garden irrigation – Introduces homeowners to the options and benefits of an irrigation system.
• Energy saving tips – Offers recommendations for energy savings around the home.

“Whether choosing sections based on topic or reviewing the home as a whole, the residential website shares tips, stats, facts and insight on everything home and water,” said O’Grady.

Also on the website, visitors can sign up for a quarterly newsletter that shares advice and information for homeowners. To learn more and take a tour of the website, visit http://residential.goulds.com/.

For more news and updates, follow GWT on Facebook: https://www.facebook.com/GouldsWaterTechnology and Twitter: https://twitter.com/GouldsWaterTech

About Xylem

Xylem (XYL) is a leading global water technology provider, enabling customers to transport, treat, test and efficiently use water in public utility, residential and commercial building services, industrial and agricultural settings. The company does business in more than 150 countries through a number of market-leading product brands, and its people bring broad applications expertise with a strong focus on finding local solutions to the world’s most challenging water and wastewater problems. Xylem is headquartered in Rye Brook, N.Y., with 2013 revenues of $3.8 billion and more than 12,500 employees worldwide. Xylem was named to the Dow Jones Sustainability World Index for the last two years for advancing sustainable business practices and solutions worldwide.

The name Xylem is derived from classical Greek and is the tissue that transports water in plants, highlighting the engineering efficiency of our water-centric business by linking it with the best water transportation of all — that which occurs in nature. For more information, please visit us at www.xyleminc.com.

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Morton Grove, Ill.– Sept. 9, 2014 – Continuing education is a crucial part of any vocational trade. With ongoing technological advancements, it is vital HVAC professionals invest in continuing education. Bell & Gossett^®, a brand of Xylem Inc., and a leader in education for the hydronic heating and plumbing industries, announced its fourth quarter 2014 seminar schedule for the Little Red Schoolhouse^®.

“Little Red Schoolhouse seminars provide attendees with the knowledge and tools needed to take industry skills to the next level,” said Larry Konopacz, Manager, Training and Education, Little Red Schoolhouse, Xylem. “By introducing students to a system solutions approach, we help them consider the complete needs of their customer.”

The Little Red Schoolhouse is authorized to offer International Association for Continuing Education & Training (IACET) continuing education units (CEUs) for its programs that qualify under the ANSI/IACET Standard. Seminars – tailored to engineers, wholesalers and contractors – are taught by LEED^® Accredited Professionals and attendees earn 1.7 CEUs upon successful completion.

Little Red Schoolhouse seminars and dates for the fourth quarter include:

Modern Hydronic Heating Systems – Basic Seminar*                                   Oct. 6-8

Service & Maintenance of Water Based HVAC Systems Seminar                Oct. 20-22

Design & Application of Water Based HVAC Systems Seminar*                 Nov. 3-5

Large Chilled Water System Design Seminar*                                                 Nov. 10-12

Plumbing Systems Design Seminar                                                                    Nov. 17-19

Design & Application of Water Based HVAC Systems Seminar*                 Dec. 8-10

* Seminar approved by Green Building Certification Institute to provide credit toward the credential maintenance requirements of the LEED Green Associate and LEED AP certifications.

To view the fall 2014 Little Red Schoolhouse promotional video, visit: http://bellgossett.com/training-education/.

Since 1954, the Little Red Schoolhouse has trained more than 60,000 engineers, contractors and installers globally in the proper design, installation and maintenance of hydronic systems. The fully equipped learning center seats 40 students, so it is recommended to sign up for classes as soon as possible. An exception is the Service & Maintenance of Water Based HVAC Systems Seminar, which is limited to 25 attendees.

For seminar descriptions and enrollment information, visit www.bellgossett.com/training-education/. Reservations must be made through a Bell & Gossett representative. A complete list of representatives, including contact names and phone numbers, is listed on the website.

About Xylem

Xylem (XYL) is a leading global water technology provider, enabling customers to transport, treat, test and efficiently use water in public utility, residential and commercial building services, industrial and agricultural settings. The company does business in more than 150 countries through a number of market-leading product brands, and its people bring broad applications expertise with a strong focus on finding local solutions to the world’s most challenging water and wastewater problems. Xylem is headquartered in Rye Brook, N.Y., with 2013 revenues of $3.8 billion and more than 12,500 employees worldwide. Xylem was named to the Dow Jones Sustainability World Index for the last two years for advancing sustainable business practices and solutions worldwide.

The name Xylem is derived from classical Greek and is the tissue that transports water in plants, highlighting the engineering efficiency of our water-centric business by linking it with the best water transportation of all — that which occurs in nature. For more information, please visit us at www.xyleminc.com.

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