Extra Edition

Troubleshooting Challenge: A Gas Furnace That Heats, But Not Enough

September 3, 2012
This troubleshooting problem brings you to a three-bedroom, ranch style home on a concrete slab, which, as most typically do in this area of the Southwest, employs a rooftop evaporative cooling system in the summer and an upflow forced-air gas furnace for heating in the winter. The customer says one of the bedrooms “just won’t get comfortable.”


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NREL Works with ASHRAE, Others to Cut Building Energy Use in Half

September 3, 2012
Hospitals use a lot of energy to save lives. To find ways to cut the energy intensity of large hospitals as well as schools and retail buildings by half, DOE’s Commercial Buildings Program and its National Renewable Energy Laboratory (NREL) are working together with ASHRAE and other members of the building industry.


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How to Keep Your Head on Straight When You Haven’t Sold a Job in Days

September 3, 2012
If you’re the person responsible for sales and you haven’t sold a dime for days, you might be tempted to think negatively. You might become critical of yourself or others. This can do nothing to help you. It’s important that you remain logical and not emotional.


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Florida A&M Selects Siemens for $12.2 Million Performance Contract

September 3, 2012
Florida A&M University (FAMU) has chosen Siemens to implement a $12.2 million performance contract that is expected to save the university approximately $1.2 million in equivalent guaranteed annual energy savings.


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Btu Buddy 113: Restriction in the Liquid Line Problem

August 20, 2012
Bob and Tim have been sent on a call to a house with no cooling. The system has just been installed and the construction crew has been having problems with startup. The system has a capillary tube metering device and Bob and Tim begin looking at what may be wrong.


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Is It Better to Test Ducts with a Positive or Negative Pressure?

August 20, 2012
A very common complaint about duct testing is that the covers get blown off the registers. Most code language leaves the choice of pressurizing or depressurizing up to the tester, but experience has shown that the positive pressure made sealing registers much more difficult, and could triple the time to perform a test.


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EEOC State Data Shows Trends, Areas to Watch

August 20, 2012
For the first time, the U.S. Equal Employment Opportunity Commission (EEOC) has revealed how many discrimination charges and which types of charges have been filed in each state and territory since 2009. Now, companies can access this information for each state where they have sites and offices.


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Thermal Energy Storage Slashes Peak Demand at McConnell Air Force Base

August 20, 2012
CALMAC has announced the successful installation of its IceBank® thermal energy storage tanks at McConnell Air Force Base (AFB) in Wichita, Kan. By implementing thermal energy storage, the base is able to reduce the costs associated with round-the-clock cooling and reduce peak demand charges.


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Furnace Installation Safety

August 6, 2012
This article deals with your personal safety when installing a new or replacement furnace. Topics covered include emergency procedures; clothing and safety gear; fall protection; electricity; lock out, tag out; GFCI; fuel safety; and confined spaces.


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What’s Shakin’ with Your HVAC System?

August 6, 2012
Using a vibration tester can enable technicians with no training in vibration measurement and analysis to test pumps, motors, compressors, and other HVAC equipment and get both diagnoses and recommendations for required action on the spot within just a few minutes.


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