The casing frame is constructed of heavy extrude Aluminum proﬁles with Thermal bridging factor TB3, jointed together by means of special corner pieces made of solar radiation resistant glass reinforced polyamide, of excellent mechanical chararacteristics. The profiles are ﬁxed on the corner pieces via galvanized allen head screws, that are completely hidden, thus creating an aesthetically perfect box. The profiles themselves are thermally insulated, built in tow pieces join means of synthetic bars. Thus any metal contact and therefore heat transfer between the internal part of the unit and the environment is completely blocked. Air tightness is ensured by a double gasket system. The internal gasket profile is inserted in the profile though a special slot and the internal part of the panels are thus completely isolated. Another external EPDM gasket is used where panels are ﬁxed on the casing. This double gasket system has been designed for both positive and negative pressures in the unit. Three different types of profiles are used, one at the unit length and ends, one at the boxes junction and finally a panel separating omega profile for lengthy boxes. The internal surface of the unit is completely flat and vew easy to clean. There are no internal frames or other projections.
The panels are of the double wall type. A special synthetic EPDM profile completely insulates the external and the internal panel walls, so that there is no metallic contact between them. This means that the internal panel wall cannot thermally affect the external wall. The insulation thickness is 50 mm as standard. Thus perfect thermal and acoustical performance is achieved.
Standard panels are fabricated from heavy guage galvanized steed sheets, with variable thickness 0.6, 0.8, 1.0, 1.25 mm upon request to ensure maximum rigidity that guarantees and preserves the units operation during the years. After fabrically powder coated with an epoxy-polyester RAL 7042 coating of thickness 60 μ. This fully automatic precess ensures superior corrosion resistance against the most aggressive ambient conditions. The treastment successsfully withstand a slat spray test of 500 hours, according to ASTM B-117. This coating is applied on external panel or upon request can be on both internal and external sides panels.
Panels can also be manufactured of stainless steel SS306 or SS316 for one side or both sides panels. The panels are fixed on the profiles by sheet metal screws, inserted on predrilled holes. The screws are guided by means of a synthetic well and closed by removable synthetic caps. which prevent the metalic contact between the screws and the panels.
Klimallco air handling units have 2 different types of insulation material can be provided upon request:
The base frame consist of heavy steel base electrostatically powder coated with an epoxy-polyester coating and 100, 150, 200, 300 mm height is provided as standard to facilitate unit lifting, installation and leveling. Different base height available upon request as optional.