HVAC

Don’t get frosted

Feature Story Improve defroster performance by making sure your truck’s air-conditioning unit is ready for winterBy Stephen Petit Seasonal HVAC maintenance is quick, simple and relatively inexpensive to do, according to Red Dot’s Gary Hansen. It’s been a cold night and you’re hot to get rolling. But your defroster is taking forever to clear the windscreen.‘You may not realize it, ...

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The air in there

Feature Story Understanding vacuum and pressure can improve the operation of your oil pumpsBy George Lanthier Figure 1 In my travels on the Internet, in seminars and just talking to so many people in this industry, it never seems to amaze me how many people have problems with oil lines, fuel pumps and, specifically, vacuum. When I was thinking about ...

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Two for one

Feature Story Energy efficiency can be improved with combination boiler/hot-water heater The selection of a residential heating system is an investment that the homeowner will have to live with for a very long time. Those who have owned all-electric homes, advertised as an advanced and integrated solution to power and fuel needs, know firsthand how technologies and energy costs can ...

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Don’t get zapped

Feature Story There aren’t any ‘magic bullets” when testing electrical componentsBy George Lanthier Figure 1 If you travel the Internet, you will see dozens of postings about component failures and guys going nuts over these failures and the testing of both conventional and solid-state ignition systems. When you cut through all of this stuff you quickly see that what everyone ...

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Hot stuff

Feature Story In protecting against scalding, the manufacturer and installer must ensure a safe installation By George Lanthier Figure 1 A few years ago, 1998 to be exact, a good friend of mine, Bob Suffredini of Therma Flow/Everhot, and I put a book together on domestic hot water. Although it contains just about everything you would ever want to know ...

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Tender loving care

Feature Story Radiant heat’s the natural choice for a home installing a daycare center By Chris Kastner A Weil-McLain Ultra oil boiler was selected to provide the power for the daycare center’s radiant-heating system. If you’re planning to open a daycare center in the basement of your new home, it makes perfect sense to provide in-floor heating, especially if it’s ...

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Fluepipe design, Part 3

Feature Story By George Lanthier Time to do some sizing of multiple-unit fluepipes and wrap this series of articles up. We finished in the last article with the sizing of everything but the common vent pipes and a discussion about the transitions.What about those transitions, and again, there’s a right way and a wrong way. In Figure 1, courtesy of ...

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Fluepipe design, Part 2

Feature Story By George Lanthier OK, if you remember in the last article we looked at fluepipe design and what it really takes to do it right. Last month we looked at single units, this month it’s multiple units. Keep in mind that I’m continuing to follow the NFPA Standards, NFPA31 and 211, for this subject, and both NFPA and ...

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Fluepipe design, Part I

Feature Story By George Lanthier You might look at the title of this article and figure, ‘Oh boy, what’s this now!” Well, as it turns out, I’m learning that fluepipe design is not as easy as some people think it is. In fact, when it comes to the codes and good industry practice, many are doing it very wrong. As ...

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A ‘two-step” approach

A burner with the two-step pump is a lot easier to work on and set up In two previous articles we looked at the setting and adjustment of damper motors and the servicing of the linkage on commercial burners equipped with that type of damper. In this article we will take a closer look at one of the pumps that ...

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