Two- or four-way valves Fresh air inlet Conditioned air to adjacent room kit Electric heater Auxiliary drain pan
Features and advantages
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. 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. The elegant air inlet grille blends aesthetically with any room decor. 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 m3/h). The Idrofan cassette offers an ultra-low-noise solution for applications where a low noise level is the most important selection parameter. Reduced energy costs - the LEC motor reduces cassette power consumption by 50 to 75%. The LEC option meets the new building energy management regulations. 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. Maximum ﬂexibility - auto-adaptive air ﬂow rate adjustment from 0 to 100% ensures perfect cooling and heating conditions in the room. Extended life time - LEC motors with brushless techno-logy use a lower fan motor temperature for extended operating life.
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. Four-way air distribution gives individual comfort while for localised control each diffuser may be adjusted or even shut down completely. Integrated, factory-mounted cooling and heating coils, two-pipe or two-pipe with electric heater, and four-pipe applications.
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: - Lower air ﬂow per unit area, resulting in lower pressure drop and reduced noise level. - The average interval between ﬁlter cleaning is three times longer, compared to standard ﬁlters. - The ﬁlter material is polypropylene and the grade is EU1. 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.
Designed for silence
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. 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. 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.
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. The Idrofan cassette is also available with variable-speed LEC (Low Energy Consumption) EC motors, that meet the new building energy performance objectives. The LEC solution enhances unit performance offering: 600