series REGULATING DAMPERS

CONTENTS Regulating dampers CRC-M, CRC-E and CCC 4 Regulating dampers CRR, CRR-E, CRR-M and CRR-MT 13 Product codes and dimensions 14

Circular regulating dampers types CRC-M, CRC-E and CCC Description Circular Regulating Dampers are used to balance air installations, also these dampers can be used as shutoff dampers. Circular regulating dampers are manufactured in Galvanised sheet metal. Damper CRC-M Models There are 3 different types of circular regulating dampers; CRC-M: Circular Regulating Dampers made from a steel cylinder made in galvanised sheet metal, it is operated by means of a locking quadrant mechanism, which gives us a visual indication of the damper position, this model provides a positive seal. CRC-E: Circular...

Type CRC-E NOMINAL

Executions. Dimensions Type CRC-M and CRC-MT

Sound Pressure Levels in dB(A)

Dampers Technical data Damper Regenerated noise

DampersQuick selection tablesValue of the Sound Power of the regenerated noise (dB) for the circular regulating dampers in the different Octave bands from 63 to 8000 Hz. Damper Radiated noise

Dampers Quick selection tables Damper Radiated noise

Volume control dampers, CRR series Description The KOOLAIR CRR volume control dampers are rectangular units to be used for flow and pressure control in HVAC installations. The dampers are fitted with a single slat commanded by a central shaft and are manufactured of galvanized steel sheet. Models There are four types of rectangular volume control dampers, according to the operating mechanism included and the degree of air tightness provided: CRR-MT: Rectangular volume control damper manufactured of galvanized steel sheet, with servo drive-based slat operation (opened/closed, three-setting operation,...

Dampers Product codes CRR. Dimensions LxH (mm). CRR-E Dimensions LxH (mm). CRR-M Dimensions LxH (mm). CRR-MT Dimensions LxH (mm). Note: Specify servo drive type and power Identification The damper identification will be coded according to the nomenclature listed in the adjacent table. Coding example: CRR-MT, 500x200 with open/closed servo drive, 24V DC power. Executions. Dimensions The dimensions listed below are standard for all damper models in the series. NOMINAL DIMENSIONS (AIR FLOW AREA), in mm

Executions. Dimensions - CRR-E model NOMINAL HEIGHT NOMINAL LENGTH - CRR-M model MANUAL CONTROL NOMINAL HEIGHT NOMINAL LENGTH

Executions. Dimensions - CRR-MT model NOMINAL HEIGHT NOMINAL LENGTH Technical data Sound power and pressure loss chart, for % damper opening (20% to 100%) The following chart corresponds to volume control dampers with an area of 0.1 m2. For other cross-sections, please use the correction factor listed in the table on next page. % damper opening Symbols V (m/s): Front air velocity through the damper, in m/s Pest (Pa): Pressure drop in damper, in Pa LWA [dB(A)]: Sound power level, in dB(A)

DampersTechnical data Technical data table. Sound power level and pressure loss The following table can be used to obtain the sound power level (in dB/octave), from a front air flow velocity and a degree of damper opening (pressure loss, in Pa). The data shown in the following table are for dampers with an area of 0.1 m . For other cross-sections, please use the correction factor listed further below on this page.

THIS CATALOGUE IS INTELLECTUAL PROPERTY, Reproduction, either partial or total, by any means, including electronic, is prohibited without prior written authorisation from KOOLAIR, S.A. CIN-CRC-0515-00

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