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Products:
D-MEC
D-IDC
D-MAU
D-AHU
D-AHU MZ
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D-MAU Make-Up Air Handling Equipment
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DAirTech’s Make-Up Air Units are packaged units for single or multi-stage cooling, ventilation and single or multi-stage heating applications, and are available with a variety of optional features. Make-Up Air Units are available as complete units with direct evaporative cooling section, indirect fired gas heaters and blower section with a choice of either centrifugal DWDI or Plenum type blower. The fan wheels are available in forward curve, backward inclined or air foil blades construction. The units can incorporate air intake plenum section, return air section, air mixing section and economizer section. Features common to all units are structural steel channel base, galvanized steel housing, access doors, high density fiberglass insulation, high efficiency blower motors, and externally mounted and wired electrical enclosures. The units are supplied with high performance indirect gas fired furnaces as manufactured by Reznor or Sterling, or could be supplied with high efficiency AIR certified Hot Water or Steam coils as manufactured by Heatcraft. DAirTech’s standard Make-Up Air Units range from 4,000 cfm to 46,000 cfm with heating capacities from 125,000 BTUH to 1,600,000 BTUH. Special units could be built up to 72,000 cfm with heating capacities up to 2,400,000 BTUH.
• Indirect gas fired heatingA choice of, high performance, Gravity and Power Vented heaters are offered for outdoor Air Handling units, and Separated Combustion or Gravity Vented heaters are offered for indoor installation units. All heaters are certified by American Gas Association and bear C.S.A. label, as manufactured by “Reznor” or “Sterling”. • Coils DAirTech’s offers a variety of coils available to meet every application. Both 1/2” and 5/8” coils are available for Hot water applications. A 1” outside diameter Steam Distributing coil can be selected for steam heating applications. All coils are rated in accordance with ARI 410 and available with galvanized or stainless steel casing with aluminum, copper or phenolic coated fins. • Mixing Box and Economizer section The mixing box section typically combines the incoming outdoor air with recirculated return air collected from the occupied space, and is commonly included in air handler’s design to improve the mixture of outdoor and recirculated return airflow. Economizer section, with return air blower, provides a path for return air to be exhausted, allowing the system to provide natural, non-mechanical cooling when outdoor air conditions are suitable. Both Mixing Box and Economizer section are offered with a variety of low-leakage, high efficiency air control dampers, back-draft dampers for exhaust air and could be equipped with air intake/exhaust hoods or intake/exhaust louvers. •Filters A wide variety of medium and high efficiency filtration systems can be mounted in any position, including pre-filters and final filters. Two and four inch pre-filters are available. Final filters include Rigid, Multi-pocket (bag filters) pleated and HEPA filters for special applications. Other special filtration systems, including carbon, electrostatic, are also available. |
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