The Remote Lamp Mount (RLM) Small Systems (S/S) ultraviolet (UV-C) lamp fixture kit from UV Resources is designed to deliver ultraviolet energy to destroy coil/drain pan microbial infestations and disinfect moving air streams in hard-to-service fan coil units, PTAC units, and heat pump systems. According to company officials, by inactivating these microbes, the UV small systems kit helps prevent coil inefficiencies, drain pan overflow, and foul odors.
Weil-McLain® is now offering an enhanced line of its SlimFit™ high-efficiency condensing gas boilers. The company says new features include improved boiler-to-boiler communication, Modbus® and BACnet® for linking with BAS, express set up wizard, 10 preset typical heating systems, and updated controls interface for simpler navigation, at-a-glance boiler status, diagnostics, and troubleshooting.
RectorSeal® Corp. has added Big Foot® Stands to its Big Foot® Systems product line of HVAC equipment mounts. Big Foot Stands support all brands/models of ductless minisplit system (DMSS) and variable refrigerant flow/volume (VRF/VRV) condenser units.
Daikin North America LLC has launched its VRV IV-S-series heat pump, which the company is calling the next generation of “Mini-VRV” for residential and light commercial applications. The product is planned for sales availability in May 2016. The new VRV IV-S-series is a single-phase, air cooled, outdoor unit that operates up to 10 indoor units and accommodates extensive piping networks up to 984 ft.
MEMSIC Inc. has created its MEMS based pressure sensor designed for VAV damper control as well as HVC applications such as room pressure monitoring, fume hood controls, furnace press switches, heat recovery systems, burner control, fan control, filter monitoring, and many others.
All Laars commercial NeoTherm boilers now come with a large color touch screen as standard equipment. The company says the touch screen allows for quick access to the control’s full functionality in a user friendly interface. A new variable speed boiler pump control option, VARI-PRIME™, is also available that optimizes total installed efficiency by matching boiler input modulation to pump flow.
Fujitsu has introduced its new Airstage VRF system, the J-II Series. The J-II single-phase VRF is a heat-pump, serving ambient heating and cooling applications in a 3- to 5-ton size range, making it ideal for large residential and small commercial installations. The J-II offers up to 19.8 SEER and 11.4 HSPF.
Alfa Laval has introduced a patented cooling concept, Low Speed Ventilation, which the company says delivers air at a considerably lower speed: 1.5 to 1.8 meters per second. Reducing air speed and delivering an optimum airflow eliminates the Venturi effect, minimizes pressure differences, and therefore prevents problems such as “hot spots.” As LSV is a normal pressure technology, data center operators only need to control air availability, not air pressure, making it easier to achieve optimum conditions in the server room.
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.