Nailor News is your source for content on relevant topics concerning Nailor Industries, Inc. and the HVAC industry. New product releases, case studies, product & project spotlights, employee interviews, trade publication articles, and general announcements are some of the content types you can expect to find in the Nailor Airwaves.
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HVAC Ins & Outs with Dan Int-Hout - Measuring Air Speeds
April 28, 2021
By Dan Int-Hout
The 1962 Air Diffusion Council Test Code 1062 required that room airspeed measurements be taken with an Anemotherm Air Meter. This was a battery-powered analog highly shielded hot wire anemometer, made by Reeves Hoffman, a sister company to Anemostat, located in Scranton Pa. It was the required instrument in the ADC 1062 test code, which was ”the bible” for air outlet measurements. It was also the most popular and most readily available instrument for many years. It was, however, not without issues.
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VAV System Design: What is your style?
April 26, 2021
By: Matthew Crump, PE
The Houston, Seattle, and Washington DC markets largely specify systems that utilize series fan-powered terminal units in all zones. Dallas and Portland, OR, specify parallel fan-powered units on the exterior with single duct units in the interior. The equipment and configuration of selected terminal units appear to be a matter of style. There are many reasons why different areas could have different design standards. Regardless, analyzing why you would select one style over the other could provide some value...
AHRI Recognizes Nailor for 3 Years of Success
April 22, 2021
By: Matthew Crump, PE
The American Society of Heating Refrigeration and Air-Conditioning Engineers (ASHRAE) has developed standards that the industry uses to test their Terminal units (ASHRAE Standard 130) and Fan Coils (ASHRAE Standard 79). These documents outline the standard procedure for testing each piece of equipment. Standard 130 outlines terminal unit pressure drop and sound testing, while Standard 79 covers fan coil airflow and cooling/heating capacity testing. Nailor performance data published in our selection...
VAV Diffusers: The solution to some issues but the cause of others?
April 19, 2021
By: Matthew Crump, PE
Over-cooling in the summer or over-heating in the winter can impact occupant comfort. There are several solutions for this issue. These include rebalancing the system, adding Terminal Units for those spaces, or adding a VAV Diffuser. Nailor is currently in the process of adding a VAV diffuser to its portfolio. The use of a VAV Diffuser requires an understanding of the design, how they work, limitations, and system considerations associated with the product.
VAV Diffuser
The Nailor UNI VAV...
VAV Equipment Selection: Fan Powered Terminal Units
April 6, 2021
By: Matthew Crump, PE
In many VAV systems, the exterior zones will utilize fan-powered terminal units. When compared to a single duct terminal unit, the fan-powered versions have a fan that enables the induction of plenum air into the airflow. During heating, the supplied conditioned air can be reduced to the minimum ventilation rate and the heating airflow is supplemented by induced plenum air. The introduction of the fan adds a few more variables to consider when selecting the equipment.
Parallel vs. Series
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