Pulse combustion condensing hydronic boilers have a combustion process that is naturally aspirated and does not require a blower motor for operation. An assist fan is used for pre-/post-purge only and turns off once combustion has been established.
The ComfortPlenum™ consists of sealed, compact zone dampers built into a plenum. The unit requires less space in the attic, crawl space, or closet because the dampers are not mounted outside the plenum, says the company. The interior perimeter of the plenum is insulated with 1-1/2-inch-thick duct liner.
The EverSeal Roof Repair Tape bonds instantly to all common roof materials for long-lasting, watertight repairs. According to the manufacturer, the repair tape can also be used for a wide variety of HVAC applications, including repairing interior or exterior ductwork and plenum.
The AccuSense F333 air velocity sensor for embedded applications utilizes state-of-the-art constant deltaT architecture. It is a compact sensor aimed at ducting applications, fume hoods, and biological safety cabinets. It provides air velocity measurements within the range of 0.2-10 meters per second.
Two smart starters are available. The Building Automation Starter (BAS-1P™) is designed for single-phase motors and the Energy Management Starter (EMS™) is designed to work with HVAC fans, pumps, and air handlers. The BAS-1P features voltage and dry inputs for ease of integration.
The Grasslin brand GM40AV mechanical time switch and GM40AVE electronic time switch now incorporate an auto-voltage selection feature that automatically detects the appropriate voltage supply needs for any 40-A heavy-duty load. The new auto-voltage feature takes the place of the standard DIP switch.
Vertical stack water-source heat pumps (VSWSHP) are ideal for new construction or retrofit applications in HVACR applications where high levels of energy efficiency and cooling and heating are required, says the company. The units are designed and manufactured to operate on standard 115- or 208/203-V, single-phase, 60-Hz circuits.
The ecWizard is a wireless pneumatic switching device. According to the manufacturer, it is a less expensive alternative to the DDC retrofits of pneumatic systems. The device gives building operators valuable information wirelessly back to their computers so they can diagnose and monitor their pneumatically controlled zones.
The EX845 is a 1,000-A, ac/dc, CAT IV clamp meter with new MeterLink™ technology and a built-in infrared thermometer. MeterLink is a Bluetooth-based technology that connects the company’s meters and Flir infrared cameras. It allows users to transmit key electrical readings such as current or voltage from the meter directly to an infrared camera.
Sonoma Cool is an a/c unit that utilizes a dehumidify-first approach. It employs liquid desiccant technology and solar heat to remove the humidity from outside air before cooling, effectively reducing energy costs for commercial HVAC. The system leverages salt, water, and heat for its low-energy dehumidification process.
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