HVAC

The Magic Valve

Feature Story The electric solenoid valve can be used to correct deficiencies in the combustion processby George Lanthier There are two critical areas for any airplane pilot in flying from one point to the next ‘ the takeoff and the landing. Most accidents still occur during these two procedures. Put another way, this is like the startup and shutdown of ...

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Draft Inducers and Controls

Feature Story by George Lanthier Figure 1 I’d like to preview something new with you and talk about one of my favorite subjects again ‘ draft. When I first started writing for magazines about 20 years ago, my first editor joked to me to, ‘pick something easy to start off with, like draft.” That was one of the greatest understatments ...

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A Little More on pH

Feature Story by George Lanthier A lot of you asked me for more information on pH and how it pertains to heating systems, so here we go. If you look up pH in an encyclopedia you will find that it is ‘a measurement of the acidic level and the base of a solution in regards to the activity of hydrogen ...

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Really basic electricity

Feature Story Understanding the most complex circuits is really just a case of knowing the simplest By George Lanthier If there’s one thing most people agree on in this business, it’s that electricity and controls are one of the most troublesome areas for them. Then, they target low voltage and zone valves as the biggest problem. It’s so bad with ...

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Too grand

Feature Story System 2000 boiler makes the difference for Lake Wynonah Municipal Authority The following photos correspond to a February 2007 article of the same title that covered Hlavaty Plum-Heat-Cool, Inc. and Energy Kinetics’ System 2000 Boiler. Staff of Hlavaty Plumb Heat Cool Hlavaty family and owners of Company (left to right starting with back row David, Frank and Tom ...

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AHR Review

Feature Story The industry’s best and brightest step forward The 59th AHR Expo wowed the HVAC&R industry earlier this year, from Jan. 29-31, as it attracted an impressive number of exhibiting companies, exhibitor personnel and visitors. The 2007 AHR Expo, which was held at the Dallas Convention Center, attracted 1,789 exhibiting companies, 313 of which were international companies that represented ...

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Indirect Water Heaters

Feature Story Indirect water heaters ‘ conventional/new applications By George Celorier Conventional Indirects For many years indirect water heaters and torpedo heaters have been used as an improved DHW (Domestic Hot Water) system when compared to cast iron boilers with tankless coils. The advantages include the abundance of hot water that is available from both the water stored in the ...

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Heating Efficiency

Feature Story Earthly pursuits EPA tests verify a geothermal system that provides 400-percent efficiency in commercial water heating To achieve 400-percent efficiency, 75 percent of the energy delivered by the EarthLinked system to the holding tank is renewable energy. The U.S. Environmental Protection Agency has released an Environmental Technology Verification report confirming 400-percent efficiency of the EarthLinked Commercial Water Heating ...

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Too grand

Feature Story System 2000 boiler makes the difference for Lake Wynonah Municipal Authority Hlavaty Plumb-Heat-Cool, Inc., is a 31-year-old, Marine-veteran-owned, second-generation family business. The business started simply with master plumber Frank Hlavaty and one employee, George Leib, who now owns Leib Well Drilling in Ashland, Pa. Hlavaty’s soon took on more help, including Frank’s wife, Cheryl, and son David. The ...

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