Options / accessories
AIR TREATMENT
■■ Two- or four-way valves
■■ Fresh air inlet
■■ Conditioned air to adjacent room kit
■■ Electric heater
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Auxiliary drain pan
Features and advantages
Features
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The 42GW _ AC is available with a new-generation three speed AC motor . The 42GW _ LEC is available with a variable-speed Low Energy Consumption EC motor .
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The 42GW is normally installed in suspended ceilings and offers two , three or four way air distribution . The units maintain precise temperature and humidity conditions preventing draughts and stale air zones .
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The elegant air inlet grille blends aesthetically with any room decor .
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The Carrier hydronic cassette is available in six sizes suitable for a wide range of applications , with air flows from 100 to 402 l / s ( 360 to 1450 m 3 / h ). The Idrofan cassette offers an ultra-low-noise solution for applications where a low noise level is the most important selection parameter .
General features
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The low-profile 42GW is light and easy to install . The small chassis fits neatly with standard ceiling tiles and is simple to install wherever it is needed .
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Four-way air distribution gives individual comfort while for localised control each diffuser may be adjusted or even shut down completely .
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Integrated , factory-mounted cooling and heating coils , two-pipe or two-pipe with electric heater , and four-pipe applications .
Designed for silence
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The 42GW units were designed for extremely quiet operation with sound levels that set new comfort standards for buildings . The unique Carrier design of the centrifugal fan ensures extra-quiet operation .
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The new fan / motor assembly design ensures whisperquiet operation , two times less than the previous generation . Particular attention has been given to the low fan speed .
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The special design of the diffuser ensures rapid blending of the supply and room air . Conditioned air is directed along the ceiling then evenly distributed throughout the room . Return air enters the cassette unit through a large grille . It is then cleaned by an easily removable , washable synthetic filter , treated and recirculated .
Motors
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The Idrofan cassette is available with a three-speed AC motor , with ultra-low noise levels to make it one of the quietest cassettes on the market .
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Reduced energy costs - the LEC motor reduces cassette power consumption by 50 to 75 %. The LEC option meets the new building energy management regulations .
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Improved comfort - the LEC motor with variable fan speed reduces operating noise levels compared to multi-speed fans , offering ultra-quiet air flow down to very low operating levels . With the NTC controller , a maximum fan speed can be set to allow better sound level management .
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Maximum flexibility - auto-adaptive air flow rate adjustment from 0 to 100 % ensures perfect cooling and heating conditions in the room .
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Extended life time - LEC motors with brushless techno-logy use a lower fan motor temperature for extended operating life .
Filters
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The standard filter for the Idrofan cassette range has a pleated filtration surface , resulting in a 87 % larger surface than a conventional filter , with the following additional advantages :
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Lower air flow per unit area , resulting in lower pressure drop and reduced noise level .
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The average interval between filter cleaning is three times longer , compared to standard filters .
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The filter material is polypropylene and the grade is EU1 .
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In the Idrofan cassette range the filter is located inside the grille of the unit . Cleaning cannot be easier : the filter can be manually unclipped from the grille support . The filter frame is pulled down and the filter can then be removed easily . Re-assembly is just as easy , reversing the sequence . Washable filters are supplied as standard .
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The Idrofan cassette is also available with variable-speed
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LEC ( Low Energy Consumption ) EC motors , that meet |
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the new building energy performance objectives . The LEC |
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solution enhances unit performance offering : |
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600 |
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