Coolerado has launched its M50 Downflow air conditioning unit delivering an Energy Efficiency Ratio (EER) above 40 when used as stand-alone and above 21 when working in concert with DX Roof Top Units (RTU). The company claims the M50 Downflow line was designed for easy installation on commercial roof curbs.
Lennox has expanded its light commercial Raider® rooftop unit line to include new 7.5- to 12.5-ton models, adding to its existing offering of 3- to 5-ton units. Designed for compatibility with many replacement installations, Raider units are built to fit the most curb sizes virtually eliminating the need for an adaptor curb on many replacement jobs. Available in gas/electric and electric/electric models, 3- to 12.5-ton units offer efficiency levels of up to 13 SEER, 11.5 EER, and 13.2 IEER.
The ABB Low Voltage Products division is offering a new line of heavy duty safety switches for commercial and industrial applications, meeting the necessary UL98, CSA, and NEMA KS-1 standards. The 600V and 200kA rated switches use the same globally rated bodies as ABB’s rotary-style switches, providing increased performance, reliability, and safety to the heavy duty market segment, according to ABB.
Bradford White recently has added its Icon HD™ Commercial Control System to the company’s 100-gallon, 399,999 Btuh eF Series® ultra-high efficiency water heater. The ICON HD™ is an intelligent Honeywell® integrated control with a digital LCD display that combines temperature control, diagnostic codes, system functions, and operational status into a single, intuitive control unit.
The new JS Series BACnet thermostat from Jackson Systems combines the power of a space-mounted equipment controller with built-in temperature and humidity. The thermostats include a wide range of factory supplied programs for the following applications: two-pipe and four-pipe fan coil units, roof top units, heat pump units and packaged and split unitary systems.
TSI Inc. has introduced an expanded capability line of Hydronic Manometers. Models HM675 and HM685 can be used for balancing commercial hydronic heating and cooling systems, checking pump performance, and setting balancing valves.
SpacePak has introduced AirCell, a new hydronic air distribution system for commercial and residential applications. AirCell is a modular and compact high-efficiency air distribution module that works in conjunction with any hydronic supply system including boilers, reverse cycle chillers, heat pumps, and geothermal systems.
Allied Commercial has added 13- to 25-ton models to its high-efficiency K-Series product line, which currently includes 7.5- to 10-ton high-efficiency gas/electric and electric/electric models introduced earlier this year. Designed for integration into spec and bid, and replacement markets, the company says its high-efficiency K-Series models help commercial buildings meet or exceed sustainability standards while helping users to conserve energy and take advantage of federal and local energy-efficiency incentives.
Leaning on experience and data from various K-12 cities and projects, the author pursues some less conventional design approaches. They may revolve around radiant heating and/or cooling, but depending on school size and other factors, the smart use of heat recovery, DOAS, and improved central plants could also put a project on the HVAC honor roll.