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08/10 - 2 Construction subject to change. Version: 17.07.2019 No return possible!

Multi-leaf damper HK Description Application range Multi-leaf dampers type HK are used in air-conditioning and ventilation systems as control, throttle or shut-off dampers to control pressure and volumetric flow. The flow-favouring blades are adjusted together, rotating in opposite directions, via external plastic gear wheels. The external arrangement of the gears has the advantage that, in comparison with internally arranged gears exposed to the air flow, they do not become dirty that quickly. A cover plate protects the gear wheels from outside dirt and reduces the personal accident danger...

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Multi-leaf damper HK model HK-P HK-U HK-K HK-...-R HK-...-L with plastic bearing with sintered bearing with brass bearing (only H = 100 available) Operating side on the right Operating side on the left Accessories - Add-on parts - Installation frame 35/35/4 with riveted wall anchors (-ER2) - Flat-steel counter frame 33/5 (-FG1) - Angular steel counter frame 30/30/3 (-WG1) - Locking device (-M001, only HK-U / HK-P), mounted to the multi-leaf damper. - Shaft design (at an extra charge, not possible for HK-K) (-W02/ -W03) - including bearing block - Electric actuator, 2/3-point - 5 Nm, 24 V...

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Multi-leaf damper HK Models and dimensions Dimensions HK-P (with plastic bearing) HK-U (with sintered bearing) Available sizes HK-P / HK-U Standard series of dimensions All combined lengths and heights available. Note: The dimensions w1, w2 and x are rounded values! Construction subject to change.

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As standard, multi-leaf dampers are supplied with corner angles. The special form of the corner holes allows them to be connected to the connection systems available on the market (e.g. Metu system M 2/M 3) Shaft design (-W02/ -W03) (not possible for HK-K) Operating side left Operating side right The number of holes does not include the 4 corner holes. Number of holes B All combined lengths and heights available. Construction subject to change. The above figure shows the division of multi-leaf dampers greater than 1998 mm and 2000 mm in height. The blades in the two sections are joined by a...

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Multi-leaf damper HK Multi-leaf damper divided vertically The figure opposite shows the division of multi-leaf dampers greater than 1998 mm and 2000 mm in width. It is not possible to join the two sections. Operating side 1 x "on the left" and 1 x "on the right". All frames are supplied in primed design. Vertically and horizontally divided multi-leaf dampers The figure opposite shows the division of multi-leaf dampers greater than 1998 mm and 2000 mm in width and height. The blades in the two sections on top of each other are joined by a coupling rod. It is not possible to join the...

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Multi-leaf damper HK Dimensions of accessories Assembly detail Installation frame (-ER2) Flat-steel counter frame (-FG1) Angular steel counter frame (-WG1) Multi-leaf dampers can be additionally fitted with: 1.) Installation frame 35/35/4 with riveted wall anchors (-ER2) 2.) Flat-steel counter frame 33/5 (-FG1) 3.) Angular steel counter frame 30/30/3 (-WG1) undrilled or drilled. All frames are supplied in primed design. Installation frame (-ER2) Bearing block A bearing block is already mounted ex-works for shaft Bearing block design (W02/W03). When a servo cylinder is mounted in factory,...

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Multi-leaf damper HK with pneumatic servo cylinder (not available for HK-K) H = 201-565 or H = 200-600 limit switch CLOSED OPEN Console type I (screwed-on) Electric limit switches can be installed to indicate position or to perform switching functions only available with shaft design (W02/W03)! H = 634-1998 or H = 800-2000 Installation options: - Damper position "CLOSED" 1 limit switch (-ESZ) Damper position "OPEN" 1 limit switch (-ESA) with 2 limit switches, "CLOSED" and "OPEN" (-ES2) If an electric actuator or pneumatic servo cylinder is used, the limit switches can also be installed as...

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Multi-leaf damper HK Technical data Volumetric flow range Leak air volume with closed damper (HK-U/HK-P) Pressure loss and noise level Pressure loss (as a function of the blade position a) Open connection Correction factor (for flow generated noise) Construction subject to change.

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Multi-leaf damper HK Selection actuator / servo cylinder HK-P/HK-U (with electric actuator) HK-P/HK-U with pneumatic servo cylinder The actuators E001 - E008 and E012 - E015 can be fitted with a limit switch "OPEN" or "CLOSED" or with two limit switches "CLOSED" and "OPEN". The actuators with spring return can be fitted with two limit switches "CLOSED" and "OPEN". When a pneumatic servo cylinder is mounted in factory, a bearing block is mounted on the multi-leaf damper as well by default. The electric actuator or pneumatic cylinder can also be installed at a later stage. When a thrust...

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Multi-leaf damper HK Selection Construction subject to change.

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*Spring return actuator 62 dB (A) Electric terminals 24 V AC/DC, 230 V AC Two-point Three-point Electric terminals 24 V AC/DC, 230 V AC OPEN - CLOSED control Connection diagram Pneumatic servo cylinder Festo type DSNU-25-140-P (-P001) Festo type DSNU-40-140-P (-P002) -1 Pressure loss Intake velocity, blower stream velocity, outflow velocity, relative to B x H Blade position A-weighted sound power level [Lwa = LWA1 + KF] A-weighted sound power level, relative to 1 m2 Density Correction factor Face area Height Width Leak air volume Leak air volume Leaf area Construction subject to change.

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Multi-leaf damper HK Order details 01 Example HK-U-0400-0201-SV-W01-R-E000-AU-NA-ER2-RB1-ESA Multi-leaf damper, rectangular design, not airtight I with sintered bearing I width 400 mm I height 201 mm I galvanised sheet steel I shaft design 50 mm | operating side on the right | without actuator, with loose locking device | fitted outside | no spring return actuator I with installation frame, with wall anchors I with frame bores on one side I with external limit switch, position "OPEN" ORDER DETAILS 01 - Type HK = Multi-leaf damper, rectangular design, not airtight 02 - Model P = with plastic...

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