The standard units series NOVAIR CTA are manufactured in 21 modular models of air volumes from 1.000 m³/h to 100.000 m³/h. It is possible to supply Air Handling Units, having dimensions settled according to specific needs and air volumes.
The Air Handling Units series CTA are manufactured with bearing framework and sandwich paneling. The frame is made of extruded anticorodal aluminium alloy profiles, usually of type AlMgSi 0,5- UNI 9006/1.
Novair exclusive profile:
The exclusive bearing structure made by NOVAIR, having actual dimensions of 37 x 25 mm and 62 x 50 mm, uses the lock panel system in aluminium (snap-in).
His patented system permits to obtain paneling tightnesses beyond 2500 Pa (class B), because of the homogeneity of the pressure over the paneling perimeter, not achievable with the traditional system (self-drilling screw fastening). This profile doesn’t require the aid of internal and external screws, giving therefore a solider and aesthetically more pleasant appearance. Because of the dimensions of the profile, the used panel will have actual dimensions of 25/50 mm (the only size available for snap-in). The profile hasn’t got external sharp edges, as foreseen by the safety and accident-prevention rules in force.
On request each unit can be equipped with the following accessories:
The paneling is double skin sandwich type made of galvanized sheet, with insulation polyurethane foam of minimum density 45 kg/m3, actual thickness:
Standard panels are made as follows:
The physical characteristics of the panel so manufactured are the following:
The fastening of panels on the bearing structure is done with a SNAP-IN system or with galvanized/INOX steel screws for thermal break profile.
The bearing baseframe is made of galvanized steel with pressure bent, bolted or welded profile, according to the configuration of the unit. It is arranged for the sections lifting and suitable for water piping passage and drain.
The basements of all the above solutions are made of galvanized steel sheet with minimum thickness 20/10 mm. On request basements or support feet can be supplied with different shapes, dimensions and materials.
The units that have to be installed outside or anyway exposed to weathering are supplied with covering roof, as accessory element.
NOVAIR can propose different solutions, according to the requests or to actual needs:
When it is necessary to cushion the propagation of the sound wave coming from the unit through the air ducts, we suggest the following additional internal coating, which are different in type and sound absorption:
Access and inspection doors:
Inspection doors on Air Handling units allow the access and inspection while assuring an easy opening and sure airtightness. Standard width is 460-600 mm.
SECTIONS ON DEPRESSION : Doors are fastened to the frame with hinges and handles made of nylon weighted with fiberglass, of NOVAIR design, allowing an easy opening even from the inside of sections.
SECTIONS UNDER PRESSURE : Inspections are equipped with traverse bars made of stainless steel whose closing is made by locking knobs (hinges are not used) assuring a uniform pressure of the door on the frame gasket. On demand it’s possible to mount hinged type access doors with inward opening.
Each access to fan se-ction is usually equipped with the following safety devices:
Dampers are made of extruded anticorodal aluminium with aerofoil blades and gasket. The movement is opposed type and is made by ABS gears protected from the airflow. Dampers are usually supplied with motorizeable pivot. On request the actuator can be of manual type.
Grids are made of galvanized steel or aluminium with fixed inclined horizontal fins against rain. The grid can be directly fastened to the damper installing a containing stub pipe between them, or directly fastened on the panel. Grids are available with 50 or 60 mm fins spacing and are all equipped with metallic birdscreen.
Thermal exchange sections:
These modular sections are manufactured in order to house the coils for thermal exchange between the air and the heating and/or cooling fluid. The sections are equipped with galvanized steel sheet guides allowing the introductionof the coil and its removal from both sides of the AHU.A galvanized steel sheet or, on request, AISI 304 (AISI 316) stainless steel drain pan is foreseen for cooling and dehumidification handlings, insulated by an anti – condesation pad.