The new Luxaire® LX Series 14 SEER THE split system heat pumps and TCD air conditioners from Johnson Controls support 3-phase, 230/460-volt light commercial applications. The company says the air conditioners and heat pumps have been proven in field trials and Luxaire’s five-year accelerated testing that incorporates tested components and CSA and UL safety certifications. The company also says the products feature robust condenser coils constructed from durable copper tubing and enhanced aluminum fins for optimal heat transfer.
RAE Coils announces the launch of its new Insulated Coil Boxes, designed for applications where maintaining different room temperatures is necessary. Unlike traditional HVAC systems, where temperature is controlled on an equipment level, the RAE Coils Insulated Coil Boxes are capable of controlling temperatures on a per-room basis. This equipment is ideally designed for use in pharmaceutical processing, food storage, healthcare, and high-rise building applications.
Bosch Thermotechnology Corp. upgraded its SM Series, two-stage geothermal water source heat pump. Bosch redesigned its SM vertical and counterflow cabinets with an increased focus on serviceability and reliability, with front water connections and an all-aluminum air coil to resist formicary corrosion. Bosch says it also redesigned the internal layout for easier access through the front panel to components most often requiring service or adjustment.
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.
Taco’s newest Zone Sentry Zone Valve – with an inverted flare – is suited for retrofit and new construction work. According to the company, the zone valves improve the overall performance of any hydronic system that uses a zone valve. Taco’s zone valve line uses microcircuit-based logic to control a gear-driven electronic actuator that drives a ball valve-based body design.
Continental Control Systems has introduced the CTRC Rogowski coil current transformer. The device is designed to simplify installations to meet the increasing demand for accurate current measurement on conductors where traditional split-core and solid-core CTs are difficult to use. With its flexible design, the CTRC is ideal for large bus bars and irregular-shaped conductor bundles. The new coil offers a small, flexible profile, enabling it to be used on conductors in tight spaces where rigid CTs won't fit.
Modine has introduced the redesigned Airedale ClassMate® single packaged vertical DX and heat pump system. According to the company, the ClassMate offers efficiency, noise reduction, and a smaller footprint, providing great flexibility for school installations. The ClassMate is offered in four capacities in two cabinet sizes. Also, EER is boosted up to 12% over the existing ClassMate HE for integrated part-load values up to 16.1.
Why was one floor’s laboratory ventilation failing to keep up, when it was even the closest floor to the rooftop fans? Some system sleuthing led two engineers to a fitting conclusion. Read more stories in May Issue 2017.