Tech Update: June 2013 Commercial Refrigeration and Residential Non-Ducted Air Conditioning Systems

Commercial

Bitzer The Octagon Varispeed series is Bitzer’s first line of intelligent compressors.

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According to company sources, its highlight is the integrated suction-gas-cooled frequency inverter. This system significantly lowers operating costs and ensures reliable and effective performance, even at high ambient temperatures. The maintenance-free frequency inverter and the easy installation and configuration are just some of the many benefits offered by the Bitzer compressor series. Bitzer’s Varispeed series is UL approved and can be applied with R134a, R404A, R507A, R407C and R22. bitzer.de/ circle 153

Danfoss
The ERC generation of parametric controllers are designed to increase energy efficiency and reduce production costs. The ERC refrigeration controller offers:
• steady operation in harsh environments (triple moisture protection)
• voltage protection algorithms for trouble free compressor operation in all climate conditions
• special algorithms for optimization under poor power supply conditions.
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Emerson
Emerson Climate Technologies is releasing a new version of its E2 supervisory controller for retail facilities. The new version of the E2 offers open BACnet communication protocol, enabling retailers to interface with more devices. In addition, the new version of the E2 offers native integration with Emerson’s multi-zone infrared refrigerant leak detection device.
The E2 supervisory controller now comes equipped with 128 MB of RAM and a 500 MHz processor, providing retailers with faster application access and greater data logging capacity. A widened screen displays a system status bar containing a convenient breakdown of system advisories, network connectivity status and system configuration. The addition of a USB port enables system backup to preserve set points and other configurations.
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Master-Bilt Master-Bilt’s Parallel Glycol Rack Refrigeration uses an energy efficient refrigeration system lowering energy consumption of the refrigeration system by as much as 25%. According to company sources, the digital controls on the system provide greater precision, diagnostics, data logging and monitoring capability. master-bilt.com/circle 156

Heatcraft
Kysor/Warren’s innovative distributed scroll system has been redesigned with serviceability and improved life cycle climate performance (LCCP) in mind. Sources say the distributed scroll system reduces refrigerant charge up to 40% compared to a traditional centralized rack system and features a 35% reduction in brazed joints, drastically lowering the potential for leaks compared to the prior generation product. The space saving design maximizes merchandising space by eliminating the need for a machine room. Additionally, the reduction of field brazing joints results in easier installation. Hinged front doors provide quick access to scroll compressors.
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Residential

American Standard The American Standard ductless system provides a home comfort solution when

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retrofitting older homes, cooling or heating new rooms, spot cooling and heating and building new construction. It also provides the highest quality of comfort and reliability for homeowners who want a dependable comfort solution with enhanced flexibility. The systems are available in mini- and multi-split applications. americanstandardair.comcircle 158

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Coleman Johnson Controls expands the Coleman Echelon series and LX series product lines to include ductless mini-split air conditioners and heat pumps. Coleman mini-splits come in either single-zone units, providing individualized comfort in a single room, or multi-zone units, connecting a single outdoor unit to up to five indoor units, providing comfort in multiple areas. The mini-splits use a wireless remote controller with a built-in temperature sensor that controls and satisfies the cooling or heating set point temperature where the remote control is located. colemanac.com/ circle 159Daikin AC Daikin AC introduces the new 8-zone multi-split system (RMXS48LVJU) targeting

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light commercial and whole-house residential markets. The 4-ton 8-zone system is an energy-efficient (up to 18.8 SEER, and 11.3 HSPF) high-capacity heat pump system incorporating Daikin’s famed VRV technology, with the ability to connect from 2 to 8 indoor units with a single, compact outdoor unit. The inverter-driven compressor provides precise capacity adjustments for efficiency and accuracy in comfort control, and allows long piping lengths (up to 180-ft. to the branch provider, over 440-ft. total loop) for added installation flexibility. daikinac.comcircle 160

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LG LG Electronics USA introduces a multi-zone duct-free split heat pump system that provides heating and cooling for up to eight separate zones, while increasing overall capacity by up to 50% compared to previous LG multi-zone models. The new LG “Multi F Max” system (LMU540HV) increases capacity to a nominal capacity of up to 54,000 btuh, from the previous multi-zoned system capacity of up to 36,000 btuh. Adding branch distribution to LG’s Mult F product family also effectively doubles the number of potential temperature control zones available, now offering up to eight individual zones for customized comfort. lghvac.comcircle 161Luxaire Johnson Controls adds ductless mini-split air conditioners and heat pumps to the

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Luxaire Acclimate series and LX series product lines.

The mini-split systems’ smaller footprint eliminates the costs and hassles of installing ducts and bulky air handlers. The mini-splits use a wireless remote controller with a built-in temperature sensor that controls and satisfies cooling or heating set point temperatures wherever the remote control is located. joinluxaire.com
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Mitsubishi Mitsubishi Electric has introduces new systems that are ENERGY STAR-rated and qualify for federal tax credits. The MSZ-GE09NA and MSZ-GE12NA systems with wall-mounted indoor units feature high SEER and HSPF ratings. The MSZ-GE systems offer:

• Single-zone cooling-only and heat pump models in 9,000, 12,000, 15,000, and 18,000 btuh capacities
• All Heat Pump indoor units are also compatible with the MXZ-B Series multi-zone system
• High efficiencies of up to 20.5 SEER.

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Trane Trane’s new ductless systems provide a cost-effective home comfort solution for

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retrofitting older homes, adding new rooms, spot cooling and heating and new construction where ductless systems are preferable to a ducted system. They are also designed to provide the high quality and reliability homeowners have come to expect from Trane. The systems are available in mini- and multi-split applications. A brand of Ingersoll Rand, Trane is celebrating its 100-year anniversary in 2013. trane.com/circle 164

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York Johnson Controls adds ductless mini-split air conditioners and heat pumps to the York® Affinity series and LX series product lines. Most models in the Affinity series are ENERGY STAR® certified, with Seasonal Energy Efficiency Ratios (SEER) ranging from 16 to 27 to ensure energy-efficient performance and comfort. The mini-split systems’ smaller footprint eliminates the costs and hassles of installing ducts and bulky air handlers. Single-zone mini-splits provide individualized comfort in a single room, while multi-zone models connect a single outdoor unit to as many as five indoor units, providing comfort in larger areas. yorkhvacdealer.com circle 165