Tech Update February 2011

Feb. 1, 2011
Commercial: Hydronic Boilers, Burners, Fan Coils, Controls, Pumps/Circulators
Residential: Ducted/Non-ducted Heat Pumps


The Lochinvar Knight® heating boiler is now available in wall mounted units with an innovative new fire tube design. Developed to provide contractors with all of the options they need to serve every application, the new Knight wall mount fire tube models are available in seven models with inputs from 55,000 to 399,000 BTUH. For higher demand applications, Lochinvar’s exclusive Smart System™ operating control features a built-in cascading sequencer that allows up to eight units to be installed, delivering up to 3.2 million BTUH heating capacity.
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Mitsubishi Electric Cooling and Heating Solutions has introduced a new VRF PWFY hydronic heat exchanger, which functions in various modes to provide hot water up to 160F. The basic PWFY hydronic heat exchanger unit is available in two sizes – 36,000 and 72,000 BTUH – and can provide hot water from 86 to 113F and cool water from 50 to 86F. For applications requiring increased hot water temperatures, the booster unit can be connected, which uses a secondary compressor to provide hot water up to 160F. Both units are connectable to Mitsubishi Electric VRF modular units, water source modular units and hyper-heat units.
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For new and replacement installations as well as additions and retrofits, Raypak's TempTracker Mod+ Hybrid control is capable of integrating all Raypak and most other major boiler platforms, company sources state. There can be a mix of stage-fire and modulation, condensing and non-condensing, all with the new optional BACnet® BMS link. It can also be used on existing and retrofit installations.
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With its two-stage, ultra high-efficiency compressor and ComfortNet™ system compatibility, the Amana® ASZ18 heat pump can deliver up to 18 SEER and 9.5 HSPF efficiencies. Built around a two-stage Copeland UltraTech™ scroll compressor – and combined with a ComfortNet communicating control – the ASZC18 heat pump provides energy efficiencies that can translate into lower operating costs, sources say. The heat pump is Energy Star-approved.
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American Standard
With all of its cooling and heating functions saved in a single streamlined cabinet, the Platinum ZM hybrid comfort system (also known as Heritage Hybrid™ comfort system 4DCZ6) from American Standard Heating & Air Conditioning features up to four stages of heating and two fuel choices. It uses an exclusive Spine Fin Coil™ and two-stage Duration™ compressor, allowing it to run at 70% capacity most of the time and the ability to step up to the second stage on extreme days.
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Armstrong Air
Armstrong Air heat pumps and air conditioners feature ratings up to 18 SEER as well as R410A refrigerant. According to company sources, Armstrong Air 418LT air conditioners and heat pumps exceed Energy Star® guidelines. The 418LT systems' revolutionary two-step design helps create a quieter, more comfortable environment by allowing the compressor to operate at low speed most of the time. The result is more consistent comfort, reduced operating sound and better humidity control, sources say.
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Rated at 14 SEER with a fixed-speed blower, the Broan FT4BE heat pump achieves up to 15 SEER and 8.5 HSPF when paired with a variable-speed indoor unit. According to company sources, homeowners will like its swept-wing fan blade and composite base pan for noise reduction, and contractors will appreciate the easy access to compressor and controls.
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The Tranquility split geothermal system from ClimateMaster, consists of the Tranquility indoor split unit (TTS) and the Tranquility air handler (TAH). When paired together this series has among the highest efficiency rating of any geothermal system on the market today. The Tranquility split system easily connects to new or existing fossil fuel and electric furnaces, uses 410A, and it also exceeds ASHRAE 90.1 and Energy Star 3.0 efficiencies. It also meets requirements for the 30% federal tax credit on installation costs.
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Ducane™ is rolling out a new lineup of enhanced heat pumps that include 16 and 18 SEER units.

The new models offer full-line, 100% scroll compressors, in-house fabricated coils, and PSC fan motors, all of which combine to increase the reliability, durability and efficiency of the units.
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Friedrich Air Conditioning introduces its PTAC unit. Its two-motor design allows the indoor motor to run at slower speeds, which reduces sound levels indoors. The tangential blower wheel has nearly 5x the surface area of a typical PTAC fan for better air distribution at lower sound levels and there are three fan speeds rather than the standard two for more comfort choices in both cooling and heating modes, sources say.
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Achieving up to 22 SEER, 10 HSPF and 14.6 EER, the Frigidaire iQ Drive® heat pump uses inverter-driven rotary technology to modulate anywhere from 40 to 118% of capacity, instantly adjusting to exactly offset the demands on the home. It runs almost constantly at a low level and operates as low as 59 decibels.

The Frigidaire iQ Drive heat pump is available in 2, 3 and 4 tons.
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The Goodman® SSZ14 heat pump has been enhanced with numerous next generation features that increase performance and long-term reliability.

Delivering up to 15 SEER, 9.0 HSPF efficiencies – with a compressor backed by a limited lifetime warranty – the Goodman SSZ14 heat pump is packed with features, company sources state.
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Johnson Controls
Johnson Controls extends the line of York® Affinity™ residential products with the new Affinity 16 SEER split system single-stage heat pump.

This latest update to the York Affinity Series is compatible with the new York Affinity communicating control to ensure maximum system efficiency and homeowner comfort. The heat pump can also be used with a standard thermostat, increasing the unit's installation and replacement flexibility.
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Rated at up to 16 SEER and 9.0 HSPF, the Maytag PSH4BF heat pump includes noise-reduction extras such as a sound blanket for the two-stage Copeland Ultra Scroll compressor, a composite base pan, and a swept-wing fan blade. The heat pump also includes a Comfort Alert™ diagnostic module to make service calls easier.
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The new MXZ-8B48NA outdoor unit from Mitsubishi Electric can connect up to eight indoor zones. The 4-ton rated MXZ-8B48NA unit features a total refrigerant line length of 377-ft. allowing coverage of a large area. Using one or two branch boxes available in 3-port or 5-port sizes piping layout and indoor unit location have exceptionable flexibility.
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The NuTone iHybrid™ Packaged System combines the electric heating and cooling convenience of a heat pump with a gas-heat furnace. The iHybrid achieves up to 15 SEER, 80% AFUE and 8.0 HSPF.

The dual-fuel unit operates at lower capacity during mild temperatures and at full capacity during harsher ones, reducing electrical consumption by almost 80% company sources say.
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Rated at 15 SEER, 12 EER and 8 HSPF, the Tappan Q5RF packaged heat pump offers quiet operation, high-energy efficiency and ease of installation, sources state. Its Copeland UltraTech Scroll compressor provides two stages of heating and cooling, and a compressor sound blanket assists in noise reduction.
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Trane’s XL20i heat pump is designed to cool a home in the summer and heat it in the winter. It has a rating up to 19 SEER and HSPF up to 9.0. According to company sources, the XL20i also saves energy with a two-compressor configuration that uses one in milder weather and accesses a second, larger one only on extremely hot days.
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The Westinghouse ET4BF heat pump is rated at up to 16 SEER and 9.0 HSPF. It features a Copeland Scroll Ultra-Tech two-stage compressor and a composite base pan for sound absorption. This heat pump includes a 10-year all-parts warranty and a 1-year Quality Pledge to replace the entire unit if the compressor fails.
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