Aug. 1, 2011
This month, we're featuring Emerson's Universal Furnace Control Kit, the winner in the Controls category.

At HVAC Comfortech 2010, 12 products were recognized as Product Showcase Award winners. Judges took into consideration the ease with which HVAC contractors can apply the technology, and the technical value of the product or service to the HVAC industry. We'll feature these products each month in upcoming issues of Contracting Business. This month, we’re featuring Rotobrush's aiR+® Air Duct Cleaning System , the winner in the IAQ category. For additional information on any of the products listed here, circle the appropriate number(s) on the reader service card at the back of this issue or visit

Rotobrush Goes Wireless With Rotobrush aiR+®
Rotobrush® International LLC, the market leader in air duct cleaning, went wireless with its popular Rotobrush aiR+® Air Duct Cleaning System, adding another level of freedom to the portable and modular system. With a pod that lifts out of an easily transportable carrier, and no controller cords, the Rotobrush aiR+® system offers contractors unsurpassed ease of use. Other valuable features include:

  • Rotomolded carrier and removable pod made of thick, high quality polypropylene for greater durability, yet lightweight enough for easy one-person use.
  • A redesigned air path resulting in increased vacuum power compared to the former SCSR model for easier removal of even the heaviest build up in air duct systems.
  • A rotating cable enclosed within the hose for safe use in every type of duct application.
  • A brush system that rotates at 450 rpm.
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Instruments Introduces new IAQ Monitor
The AQ100 from E Instruments International is a hand-held, highly sensitive, and extremely accurate indoor air quality (IAQ) monitor. Functions include carbon dioxide CO2 measurement and ambient temperature, unit selection, and minimum and maximum values. CO2 measurement range is from 0 to 5,0000 ppm. Ambient temperature range is -4F to 176F. The unit is well-protected by a shock-proof housing.
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Software Features Safety Manager Module
Maxwell Systems, Inc., has released Maxwell Systems™ ProContractorMX™ version 2.7, which offers valuable new capabilities to construction companies of varying sizes and disciplines across the industry.

With the 2.7 version, the construction management software solution delivers a new safety manager module, and new tools to increase takeoff speed and accuracy, comply with OSHA safety regulations, easily manage equipment maintenance, simplify processes, and eliminate redundancies. Features include a new OSHA Safety Manager module, which allows contractors to easily and properly meet specific OSHA requirements, as well as reduce costs and improve competitive edge with a comprehensive set of jobsite safety tools and consulting services.

An equipment maintenance feature allows tracking of work codes and service intervals (such as miles and hours) to help minimize the costs associated with equipment repairs and to keep equipment active at jobsites.
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Zone Valve Uses Microcircuit Logic to Control Fluid Flow
The new Zone Sentry zone valve by Taco enhances the overall performance of any zone valve system, sources say.

The Zone Sentry's patented technology uses a microcircuit-based logic to control a gear-driven electronically-actuated ball valve to control fluid flow. The advanced design uses 93% less energy than common zone valves while also delivering greater flow capacity, shutoff pressure rating, ease of installation and diagnostics, and the number of valves (12) that can be used on a standard 40VA transformer.

Ideal for use with a wide variety of heating and cooling applications, Zone Sentry valves were designed primarily for baseboard, fan coil, radiator, convector, heat pump and radiant applications. The valves are available in ½-in., ¾-in., and 1-in. sizes and draw only 1.44 watts, making them a high efficiency addition to residential and light commercial applications.
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Filter Curbs Feature All-Welded Construction
Thybar filter curbs are quickly manufactured to precise specifications by Thybar Corporation, Addison, IL, and most are shipped fully assembled. Advanced laser technology offers the tightest tolerances and superior construction at a competitive price. Each filter curb is custom manufactured due to the varying specifications of rooftop units and roof configurations. According to company sources, delivery is usually within two weeks after receipt of the order.

Filter curbs feature all welded construction, factory insulated walls, integral filter rack and access door for servicing filters. Options include a built-in roof pitch, extra height for installation of sound traps beneath the unit, and a pressure treated wood nailer.

Most filter curbs are shipped to the job site in one piece if trucking permits. If curb can’t be shipped as one piece, all corners are welded and the number of pieces shipped is kept to a minimum.
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New Differential Pressure Transmitter by Dwyer
Dwyer Instruments, Inc., announces the release of its new series 677B differential pressure transmitter. Series 677B differential pressure transmitters are designed to measure pressures as low as 0.1 in w.c. with ±0.4% accuracy. Use Series 677B for building energy management systems, environmental pollution control, oven pressurization, lab and fume hood control, HVAC and VAV applications. The transmitter features 15 psid overpressure, reverse polarity protection and EMI/RFI protection. Internal regulation permits use with unregulated DC power supplies. The NEMA 4 housing allows for versatile mounting locations and integral mounting tabs simplify installation.
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Advantix Systems Introduces DuTreat Narrow Unit
Advantix Systems's energy efficient dehumidification and cooling solutions use liquid desiccant technology to simultaneously cool and remove humidity directly from the air, delivering energy savings of 30 to 50%, sources say.

Previously available for just large commercial and manufacturing applications, Advantix Systems' product line has expanded to include the DuTreat Narrow, a smaller version of its innovative DuCool unit that can fit through tight clearances and be easily installed in a variety of compact spaces, including fitness centers, nursing homes, medical centers and schools.

The DuTreat units operate using electricity alone and require minimal installation. Because the units are narrow enough to roll through doorways, the DuTreat is a new solution for facilities with limited space that have struggled with humidity, mold remediation, and air quality.

Specific features of the DuTreat Narrow system include:

  • Units range in weight from 495 lbs. to 525 lbs.
  • Unit dimensions reach a maximum of 62-in. long and 40-in. wide; height is 44-in. tall.
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Healthy Climate® Offers Steam Humidifier
The new Healthy Climate® Steam Humidifier from Lennox, is the optimum solution to maintain proper moisture levels in the home. It heats water to produce steam, dispersing it evenly throughout the home to make the air more comfortable, even in the harshest winter months. All the while, it operates efficiently, using nearly all the water it takes in.

All installation supplies are included (except for the optional Humidistat* control). And its replaceable canister makes for quick and easy annual maintenance, sources state.

Other features include:

  • Up to 35 gallons of humidification per day• Electrode technology works well with nearly any water type
  • On-demand humidification with external fan control
  • Remote mount capable — up to 10-ft.
  • Graphic LCD display
  • Complete diagnostics
  • Automatic drain and airflow proving switch safety features.
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New Coleman Echelon 16 SEER Air Conditioner Eligible for 2011 Tax Credit
The new EchelonT 16 SEER air conditioner from the Coleman® brand of HVAC products made by Johnson Controls, equips contractors with a unit that meets the efficiency requirements for a 2011 tax credit.

Installed alone, the Echelon 16 SEER unit qualifies for a $300 credit. When installed with an eligible coil/furnace/air handler combination, the entire system may qualify for the maximum $500 credit, sources say.

The Echelon 16 SEER unit also adds a 2.5- and a 3.5-ton unit to the premium product offering — part of a 2- to 5-ton capacity range that addresses a variety of applications. In addition, the new air conditioner features a control board that is compatible with the Echelon residential communicating control. This revolutionary new control communicates with all key components in a home comfort system, providing total system integration that ensures maximum system efficiency and homeowner comfort while equipping contractors with a reliable, distinctive tool to increase profits and build their business.

The unit also introduces MicroChannel coil technology to the Echelon product line and includes the next generation of tube and alloy advancements.
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Crawl Space Ventilation Fans Protect Home Structure and Promote Health of Occupants
A family of new crawl space ventilation fans, called "UnderAireTM", developed by Tjernlund Products, offer homeowners a way to mechanically circulate fresh outdoor air underneath homes and porches. According to company sources, Tjernlund’s UnderAire fans are the only crawl space ventilators currently listed by ETL as "suitable for damp conditions."

All three UnderAire models have factory-installed freeze protection thermostats that prevent the units from operating if temperatures are below 40F. The two deluxe models come ready to plug into an electrical outlet and also include a dehumidistat that allows the homeowner to select the humidity level that activates the ventilator.
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GeoStar Introduces Cypress Series
GeoStar introduces its new Cypress Series energy-efficient geothermal comfort system that provides forced air heating and cooling, hydronic heating for radiant floors and a desuperheater hot water assist option that can provide homeowners with free supplemental domestic hot water in one package.

The Cypress Series achieves high efficiencies by utilizing two-step Copeland Scroll UltraTech compressors and variable-speed (ECM) fan blowers that consume less energy and provide improved comfort. The compressors are mounted on double-isolation plates made of acoustic metal and are wrapped in a compressor blanket to provide whisper-quiet operation.

Available in 3- to 6-ton capacities, the ENERGY STAR® rated Cypress Series also features R-410A refrigerant. Coated air coils add durability and longer life to the unit.
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Carrier Corp. Enhances Online Resources with Revit® 3D BIM Drawings
To assist engineers and architects in developing higher quality, more accurate architectural designs, Carrier has made available on the Internet Revit® Building Information Modeling (BIM) drawings on select HVAC products. Developed by Autodesk®, Revit BIM is a building design software which allows users to create multi-dimensional architectural models, evaluate building alternatives and work collaboratively before beginning construction. Carrier® BIM objects are configured to the design and specifications of each piece of equipment.

The initial release of Carrier Revit drawings includes select models of AquaSnap® chillers, Gemini® Select split systems, WeatherMaker® and WeatherMaster® rooftops, and Airstream™ fan coils. They can be accessed at
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Luxaire® Brings 16 SEER Efficiency to Acclimate Air Conditioners
The Luxaire® brand from Johnson Controls brings 16 SEER efficiency to the Acclimate™ Series of air conditioners.

The Acclimate 16 SEER/13 EER unit also introduces MicroChannel coil technology to Luxaire’s premium product offering and includes the next generation of tube and alloy advancements. These generation changes will provide improved performance in heat transfer and durability.

A control board that is compatible with the new Luxaire Acclimate Residential Communicating Control further enhances the efficiency of the 16 SEER unit. This new control communicates with all key components in a home comfort system, providing total system integration, sources state.
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Siemens Introduces Series 2200 CO2 Room Units for APOGEE® Building Automation System
Siemens Industry, Inc. introduces the Series 2200 range of CO2 Room Units.

Designed to work with Siemens APOGEE® Building Automation System and BACnet programmable terminal equipment controllers (PTEC), the units include sensing-only and fully interactive models. The family includes numerous options for zone level CO2, temperature and humidity sensing variants and elements.

On display models, a 96 × 64 pixel graphical organic light emitting diode display (OLED) alternately indicates zone CO2, temperature, humidity and/or day/night operation status. A convenient plug-in human machine interface (HMI) port is standard.

The maintenance free, compact, low profile units connect to the BACnet PTEC controller via the controller’s RJ-11 port. Ventilation slots in the room unit housing optimize airflow through the cover for fast measurement response and superior control.
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