CTA AIR HANDLING UNITS
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TRATTAMENTO DELL’ ARIA CTA • ErP 2018 • Air flows from 1.500 to 250.000 m3/h • Modular sections The air handling units by Roccheggiani in the CTA range have represented the state of the art for over twenty years in terms of product reliability, construction and quality and provide the most advanced solution in terms of modularity, constructional flexibility, energy efficiency and performance. Our CTA air handling units use the finest components on the market so as to ensure excellent performance even in the most challenging operating conditions and guarantee maximum flexibility to meet the most stringent requirements in modern air conditioning. Manufactured in compliance with the UNI EN 12100 standard and the CE marking directives, they are built in compliance with the ISO 9001 and ISO 14001 certified quality assurance systems and adhere to the eco-compatible design specifications for ventilation units under Reg. EU 1253/2014. In order to guarantee that the air handling units by Roccheggiani actually meet the declared product performance levels, they are EUROVENT-certified according to the ECP AHU program. Regulatory Compliance The company’s quality system had already been awarded UNI EN ISO 9001 Quality Management System certification in 1996 and, in addition to this, it was awarded UNI EN ISO 14001 Environmental Management certification in 2014. Over the years numerous product certifications for the various ranges have been obtained from the most important European bodies (TÜV, EUROVENT, Istituto Giordano, VKFAEAI, GOST, Achilles JQS, etc.). More specifically, the air handling units in the CTA range by Roccheggiani are designed and manufactured in accordance with the following benchmark regulations: - Directive 2006/42/EU - Machinery; - Directive 2014/30/EU Electromagnetic Compatibility (EMC); - Directive 2014/35/EU Low Voltage Directive (LVD); - Directive ECODESIGN (EU) No. 1253/2014 – ENER LOT 6 (ERP) EUROVENT ECP AHU “Air Handling Unit” product certification As part of the EUROVENT program, product certification involves mechanical performance testing, according to the EN 1886:2007 standards, of the identified “model box” of the casing used, the testing of the selection software functions and the validation of the software through testing the unit’s actual performance as a result of

TRATTAMENTO DELL’ ARIA CTA Model Box Casing mechanical strength Max flexure at +1000 Pa and at -1000 Pa. Subsequent test at +2500 Pa and -2500 Pa, to test the maximum pressure resistance generated by the fan without incurring permanent distortion(>2mm). Mechanical resistance categories: D1 Leakage rate of the casing Test at -400 Pa and at +700 Pa. The leakage rate is compared to the total surface of the casing and the value must not exceed the values in the following tables. Casing leakage rate – Pressure -400 Pa L1 Casing leakage rate – Pressure +700 Pa L1 Bypass loss of the filter Test at...

TRATTAMENTO DELL’ ARIA CTA Sound-proofing of the casing. The standard provides a procedure to determine the approximate sound transmission loss “De” of an air handling unit. Sound pressure measurements are performed over the casing surface of the unit by placing a sound source inside and repeating the measurements after removing the panels and obtaining thus the noise reduction of the casing. The Roccheggiani range has nine certified “model boxes” with polyurethane foam or rock wool insulation that is 25, 54 and 90mm thick, with aluminium profiles, thermal cut aluminium and AISI316L...

TRATTAMENTO DELL’ ARIA CTA Selection software The Company has developed software for the selection and estimation of air handling units, including functions for component sizing, and has also had it certified according to the EUROVENT program. The software allows a whole range of characteristics of an air handling unit to be selected such as the thickness of the metal panel sheet, the material covering internal surfaces, the material on the coil frames and the protective coating of the base and other components. It also allows great flexibility in the composition of the air handling unit as...

TRATTAMENTO DELL’ ARIA CTA Technical reports show the air handling psychrometric charts and the work point on the curves of the fan. According to the selected components, the software also gives an immediate feedback on the costs of the project.

TRATTAMENTO DELL’ ARIA CTA Construction features Roccheggiani can design and build air handling units with air flow capacities of up to 300.000 m3/h. Standard production consists of 20 sizes with a modular dimension of 90 mm, identified with a two-digit code that characterises the two dimensions of the section (height and width).

TRATTAMENTO DELL’ ARIA CTA Our standard production includes a range of air flow capacities from 1.500 m3/h to 85.000 m3/h. The modularity of our units allows projects to be built and adapted to each individual need. Each air handling unit is designed and produced considering the needs of the customer and easy installation. The unit manual provides all the necessary procedures for proper installation.

TRATTAMENTO DELL’ ARIA CTA Panels and profiles The metal supports can be made in galvanised sheet iron, in pre-coated galvanised sheet iron, in aluminium,in anodised aluminium or stainless steel with interposed high-density polyurethane foam (about 40 kg/m3) or rock wool (density of about 90 kg/m3). The thickness of the metal sheet can be chosen in different sizes from 0.5 mm to 1.5 mm. The panels are manufactured with a special shaping, which when coupled with the profile (and with the interposition of the airtight sealing) creates a single flush surface that improves air-handling...

TRATTAMENTO DELL’ ARIA CTA Dampers All types of dampers are produced internally and can meet the most stringent construction requirements. They include regulation dampers with opposed fins, noreturn dampers and shut-off dampers. They can be made with galvanised sheet steel, aluminium or AISI 304 or AISI 316L stainless steel. They are all prepared to be fitted with servo control and, upon request, can be equipped with manual controls. No-return dampers are provided with an adjustable counterweight. Filter sections Filters of various kinds can be used: undulated prefilters with regenerative...