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Condensing Units

New Products Displayed at the AHR Expo

The NEWS reports on new products found by our editors at the recent AHR Expo in Chicago. Products are listed in alphabetical order within each category.


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Experts Share Anti-Corrosion Techniques

A heavy hurricane and tropical storm season may bring more corrosion damage to HVACR systems than we normally see. Now, as many contractors start to clean up systems, and others are scheduling preventive maintenance customers, coil care and corrosion prevention should be high on the work list.


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Emerson Climate Technologies: Refrigeration Condenser Electronic Unit Controller

The Electronic Unit Controller is designed for Copeland® condensing units with low-pressure controls. According to the manufacturer, electronic pressure-sensing accuracy maintains a tighter low-pressure control tolerance.


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Ice Breaker: Fan Cycling Controls

Many refrigeration systems are installed using an outdoor air-cooled condenser. When these systems are installed in a climate where the outdoor temperature drops below 60°F, some means of preventing the condensing pressure from dropping too low must be incorporated into its design.
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White Paper Updates Refrigeration Regulations

It is one thing to install efficiently running refrigeration equipment. But it also has to be energy efficient - according to a wide range of standards. That’s why Emerson recently issued a white paper called Status of Energy Regulations for Commercial Refrigeration Equipment.
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Ice Breaker: Read and Record

When a refrigeration system fails, many times the cause can easily be diagnosed. However there are occasions when the cause cannot easily be determined - either the true cause is unclear or the technician is unsure of a problem. How do you work through these jobs? One method used by some techs is to “read and record.”
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White Paper Updates Refrigeration Regulations

It is one thing to install efficiently running refrigeration equipment. But it also has to be energy efficient – according to a wide range of standards. That’s why Emerson recently issued a white paper called Status of Energy Regulations for Commercial Refrigeration Equipment.
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Air-Cooled Condenser Coil Leaks Problem

Some years ago it was common for air-cooled condensers to develop leaks, resulting in unpredictable shorter service life. By studying the causes, it’s possible to come up with solutions. It became obvious that vibration was the major culprit, and thermal expansion/contraction creates some specific problems where the hot gas first enters the coil.
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Stop, Shop, and Save Energy

When Stop & Shop was looking for ways to incorporate sustainable technology into its new multimillion dollar West Hartford, Conn., store, it focused on energy savings and a reduced carbon footprint. In fact, the store, which opened in December 2010, is a 38,000-square-foot model of sustainability.
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Two Challenges, Two Condensing Solutions

Two refrigeration contractors were facing different challenges. In one situation, a restaurant in New York City needed to add refrigeration capacity for walk-in freezers and coolers, but in a constrained space. In another instance, a chain of restaurants was dealing with aging refrigeration equipment and the need to improve operating systems.
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2014 SMACNA Annual Convention

Views from the 2014 SMACNA Annual Convention in San Antonio.

Podcasts

NEWSMakers: Chris Mathis

Chris Mathis, president of Mathis Consulting Co. and vice chair of ASHRAE’s residential ad hoc committee, talks about ASHRAE’s exploration into the residential market. Posted on Oct. 17.

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2014 October 20

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EFFICIENCY STANDARDS

DOE has denied AHRI’s petition for reconsideration of walk-in standards. Is it getting harder to reach consensus on efficiency standards?
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HVACR INDUSTRY STORE

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2015 National Plumbing & HVAC Estimator

Every plumbing and HVAC estimator can use the cost estimates in this practical manual!

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