Articles per page:
MSAC Hotline: Proper Charge in Low Ambient Temps
What is the best way to determine proper charge
for a mini-split with only 20°F–25°F ambient? I
don’t think I’ve ever had to hook my gauges up a
mini-split in this kind of weather. I was thinking
maybe this one is low on refrigerant. I wasn’t able
to gain access to the roof on initial call to see what
kind of components the condenser was equipped
with, as far as what kind of fan cycling method or
if it had a variable-speed compressor, which would
make me even more unsure of how to determine if
this thing is charged correctly.
Measure CO2 to Improve VENTILATION/IAQ
A CO2-logging primer for facility managers and building engineers
of offices, schools, healthcare facilities and residential communities.
Radiant Heating/Cooling Plus DOAS
This technology application guide offers some design and system
considerations that help achieve low and zero net energy buildings
via radiant heating/cooling plus dedicated outdoor air systems.
Natural (Refrigerant) Selection
This multi-part series explores how refrigeration systems continue
to evolve toward natural refrigerants and what to know about
the options available as the industry continues to transition
Leading Off: Coming Together in a New Era
At the time I was writing this column, I was on my
way to the 2017 AHR Expo in Las Vegas. Making the
list of the vendor and company booths I wanted to
visit was a long process, considering there were more than
2,000 exhibitors to see with more than 760 different types of
HVACR products being shown. The show additionally featured
over 50 free educational sessions and was held concurrently
with ASHRAE’s Winter Conference, so it was a perfect
place to obtain continuing education, as well.
Heating Up: The Long & Short of It
Fodder for this column occurred after I had just finished a
phone call with a long-time Member of RSES. This is a Past
International President…someone who has seen Members
come and go as he worked his way through all the chairs of both
his local Chapter and eventually through those at the International
Chilled-beam Piping Designs, Savings and Efficiencies
Learn how a new pump
module can cut hydronic
piping sizes and quantities
in chilled beam projects.
Infrared Heaters Melt Garage Ramps in Chicago Hotel
Situated on the corner of Jefferson and Jackson streets, the JeffJack building features an open air, naturally ventilated two-level parking garage. One side of the garage features a chain link fence wall that opens the space to the elements.
Trump Administration Puts EPA on Media Blackout
AP News reported today that the Trump Administration has put the EPA on a media blackout and barred staff from awarding any new contracts or grants. The action went into effect immediately after Trump took office on Friday and it is unclear when it will be lifted.
Hit the Jackpot at the 2017 ASHRAE Winter Meeting/AHR Expo
HVACR movers and shakers from
around the globe will come to Las
Vegas for the 2017 ASHRAE Winter
Meeting and the AHR Expo.
RSES is the leading education, training and certification preparation organization for HVACR professionals. RSES publishes various comprehensive industry training and reference materials in addition to delivering superior educational programs designed to benefit HVACR professionals at every stage of their careers through instructor-led training courses, online training for HVAC, educational seminars, interactive CD and DVD products, industry-related reference manuals, and helpful technical content through Service Application Manual chapters, the RSES Journal, the RSES Journal archives and feature articles, as well as web-exclusive features.
Beginning with basic theory and extending to complex troubleshooting, training courses covering refrigeration and air conditioning, heating, electricity, controls, heat pumps and safety may be conducted in a classroom environment or though self study. RSES publications may be purchased by schools, contractors, manufacturers or any other industry group wanting to conduct comprehensive training programs. Seminars covering air conditioning troubleshooting, electrical troubleshooting, compressor training, condenser training, refrigerant piping practices, DDC controls, and more are held in various cities across North America.
Select training programs offer Continuing Education Units (CEUs) and NATE Continuing Education Hours (CEHs).
In addition, RSES offers industry certification preparation materials for refrigerant handling (EPA Section 608), R-410A and North American Technician Excellence (NATE) examinations.
RSES’ monthly magazine, RSES Journal, serves HVAC contractors, service technicians, students, operations/maintenance managers, engineers and technicians who work in the residential, light commercial, commercial and institutional markets on air conditioning, warm-air heating, refrigeration, ventilation, electrical, ice machines, chillers, hydronic heating, piping, refrigeration control and energy management, building automation, indoor air quality and duct cleaning, and sheet metal fabrication equipment and/or systems.
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