With impeller diameters from 6.89 to 8.86 in., Centrifugal Modules are available in alternating-current (AC), direct-current, and electronically commutated technology and are suitable for refrigeration, home-ventilation, and industrial applications. The compact radial impellers with backward-curved blades feature integrated connection components for straightforward operation. A pre-set inlet nozzle guarantees flawless aerodynamic and acoustic operation, while the pre-assembled operating capacitor and plug connector on the AC units eliminate incorrect wiring. An inlet-side guard grille is available upon request.
The latest in the iMotor line of replacement evaporator-fan motors, the 9211 model is a 13-w electronically commutated, unit-bearing motor. Use of an electronically commutated design allows the motor to deliver more power with a lower amp draw. The motor is a direct replacement to Hussmann's 13-w, 115-v, 1,725-rpm, shaded-pole evaporator-fan motor.
— A.O. Smith Corp.
BTL-listed, the IAQSens wall-mount sensor line includes three models with single-, dual-, and triple-sensor suites. The IAQ-300-N provides carbon-dioxide (CO2), relative-humidity (RH), and temperature sensing; the IAQ-200-N provides RH and temperature sensing; and the IAQ-100-N provides CO2 sensing only. The IAQ-300-N and IAQ-100-N feature an advanced CO2-sensing module and patented self-calibration system from GE Sensing & Inspection Technologies to ensure accurate, stable, and reliable readings over the life of the sensor.
— EBTRON Inc.
A multifunctional temperature-differential controller with add-on system functions, the iSolar BX can be used for a variety of solar-thermal heating applications. Twenty-six predefined arrangements are configured for control of standard solar water-heating systems, drainback systems, supplemental space heating, multiple storage tanks, heat dump, storage-tank boost heating, etc. The integrated secure-digital (SD) memory-card slot enables data logging to another SD memory card as well as the transfer of logged system data to a computer.
— Caleffi Solar
HVAC engineers working in hospitals, pharmaceutical plants, and similarly regulated environments seeking continuous-monitoring systems specifically geared for larger enterprises can deploy viewLinc 3.5. The system provides continuous records, 24/7 alarming, and automated reporting. It can monitor temperature, relative humidity, carbon dioxide, differential pressure, levels, and door switches.
— Veriteq, a Vaisala company
Dual-flush toilet bowls
Sloan Valve's commercial dual-flush toilet bowls have been listed and certified by the International Association of Plumbing and Mechanical Officials (IAPMO). IAPMO has certified the company's standard-height and Americans with Disabilities Act-compliant floor-mount dual-flush toilet bowls, as well as wall-mount models. The toilet bowls have been engineered for water-efficient operation with dual-flush Flushometers, including the solar-powered SOLIS, the battery-powered ECOS, and the manual UPPERCUT.
— Sloan Valve Co.
WEB-700 controllers support multiple applications, including building automation and energy management, on the same platform. Built on the Niagara Framework, the controllers can integrate into an existing building-management system, serving data and graphical information to a Web browser through an Ethernet local-area network remotely over the Internet or using a dial-up modem. Real-time data, alarms, and other control information are integrated through the controllers. — Honeywell
Low-Flow Automatic Balance Valves feature a field-adjusted cartridge that allows a user to select exact flows for specific applications. The Low-Flow Circuit Sentry and Low-Flow Wye-Strainer are designed for automatic-flow-limiting-style balancing of HVAC cooling and heating circuits and are suited for small coils that keep constant fluid flow. — Bell & Gossett
For use in new and renovated buildings, Colmac heat pipes are passive devices that transfer heat between a building's exhaust and supply-air streams. Available with capacities of up to 120,000 cfm, the pipes are manufactured with ⅝-, ⅞-, or 1-in. tubes. Typically, 65 to 75 percent of the energy in building exhaust can be cost-effectively recovered and reused. — Colmac Coil
One-piece molded-polymer register-box/stepped-collar combinations, MH Tuffboxes are designed specifically for conventional metal diffusers. Each model has a stepped collar design that offers a choice of three round-duct-diameter sizes. A beaded rim on the quick-break-away collars helps hold flexible duct in place and speed the fastening process. — Airtec Products Corp.
In the 3- to 9-ton, 10- to 30-kw range, modular carbon-dioxide compressors have a rated motor speed of 1,750 rpm and a rated pressure of 1,820 psi. With an axial-piston configuration, the compressors have a swept displacement of 195 cu ft per hour. The units have a vertical-axis mounting configuration. — EcoThermics Corp.
A Quiet Condenser option is being offered for RoofPak applied rooftop systems and RCS 15- to 140-ton condensing units. The condensers are engineered with seven-bladed fans that incorporate serrated trailing edges and special blade tips to reduce radiated noise and improve condenser-fan efficiency. When this option is employed, sound power at the unit is reduced by an average of 7 dB when compared with standard units. — McQuay International, a division of Daikin Industries Ltd.
Send product and literature releases to the attention of Megan Spencer, associate editor, HPAC Engineering, The Penton Media Building, 1300 E. Ninth St., Cleveland, OH 44114-1503; e-mail: [email protected]. Electronic submissions are preferred.