Air-Conditioning, Heating, and Refrigeration Institute (AHRI) has
launched three new certification programs.
39th certification program is for unit coolers, which are typically
utilized in refrigerated warehouses. The equipment in the Unit
Coolers Certifi cation Program is rated and tested in accordance with
AHRI Standard 420, Performance
Rating of Forced-Circulation Free-Delivery Unit Coolers for
coolers are factory-made, and include means for forced air
circulation and elements by which heat is transferred from air to
refrigerant without any air resistance from external elements.
certified ratings for the unit coolers program include cooling
capacity and rated fan power. This program applies to production
models of Unit Coolers, which meet the following criteria:
refrigerant R-404A or R-507A for Direct Expansion (DX) Coils, or
R-717 for DX and/or liquid overfeed coils;
air flow direction (the air flows to or from the inlet face of the
coil from or to the fan inlet, with no change in direction); and
data for certifi ed products in this program will be available in the
Directory of Certified Product Performance at
produce fast-rising, high frequency pulses of electrical energy to
control and power motors. The equipment in the VFD Certification
Program is rated and tested in accordance with ANSI/AHRI Standard
Rating of Variable Frequency Drives.
Once considered a ‘high tech’ option for only the most elaborate
HVACR systems, VFDs have been in the mainstream for several years,
providing better efficiency with improved reliability.
cooling equipment is used to remove the immense heat generated in
computer rooms and data centres, and support consistent information
sharing and processing around the world. Equipment in the program
will be rated in accordance with AHRI Standard 1360, Performance
Rating of Computer and Data Processing Room Air Conditioners.
AHRI is currently soliciting quotes for laboratory testing and
expects to launch the program in January 2014.