The York Direct Fit rooftop replacement solution from Johnson Controls now includes a full line of 3- to 8.5-ton packaged heat pumps. Like other products in the Direct Fit series, the company says its heat pumps feature an exact-fit replacement design that matches the units to footprints of other manufacturers’ units and reduces installation time, cost, and complexity by eliminating the need for a curb adapter.
Niles Steel Tank now offers 150- to 1,000-gallon electric water heaters from 12 to 162 kW. The heaters feature 150 psi ASME code glass lining, ASME temperature and PRV, internal fusing (above 120 amps), and magnesium anode rods.
Howden American Fan Company is offering the BCS Backwardly Inclined Fan for air purification in applications like woodworking, chemical mixing, welding, dry storage, and more. The BCS fan delivers non-overloading horsepower characteristics and stable performance over the entire pressure curve for maximum efficiency.
Carrier has released its newly designed variable air volume (VAV) WeatherExpert™ 48/50LC 6- to 23-ton packaged rooftop units. The newly designed WeatherExpert VAV models, available from 23 tons down to 6 tons, use a dedicated i-Vu® controller that links communication between the system zone terminals and the unit to efficiently adjust the air flow and compressor stages that are required.
Nidec Motor Corporation (NMC) has launched a new family of variable speed products, which the company says offers product compatibility for a true system solution. With NMC’s ACCU-Series™ product line, customers can match a U.S. MOTORS® brand inverter duty motor with an NMC drive or panel or purchase integrated motors and controls. These products are solution driven and are designed to be used together as a system.
Mil-Ram has released its new TA-2100 Gas Detectors with graphics display. The new product detects toxic gases, oxygen, lower explosive limits (LEL), hydrocarbons (HCs), volatile organic compounds (VOC), and more.
RectorSeal® Corp. has introduced the SS1 Directional Cleanout Tool for clearing clogged debris from 3/4-in primary and secondary condensate drain lines of all air conditioner brands and sizes. The tool uses RectorSeal's Safe-T-Switch® SS1 inline overflow/shutoff switch body or any condensate drain 3/4-in PVC inline tee as an access cleanout fitting.
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.