Application

• Smoke protection dampers of Type JZ-RS are used in ventilation plant rooms or in ducts to prevent smoke from spreading (according to the German guideline regarding fire protection requirements on ventilation systems, LüAR)
• For the refurbishment of systems with regard to fire safety
• Can be triggered by duct smoke detectors with general building inspectorate licence
• Integration into the central BMS with TROXNETCOM

Special characteristics

• Low differential pressure and sound power level
• Aerofoil blades
• Low-maintenance, robust construction
• No parts with silicone
• Available in standard sizes and many intermediate sizes
• Closed cell side seals meet increased hygiene requirements

Classification

• Building inspectorate licence Z-78.4-51 from the DIBt, Berlin, Germany
• Casing air leakage to EN 1751, class C
• Closed blade air leakage at a differential pressure of 40 Pa = 200 m³/h per m²
• Long-term testing: 10,000 open/close cycles

Nominal sizes

• Standard: B = 400 – 2000 mm (in increments of 200 mm), H = 345 – 1995 mm (in increments of 165 mm)
• R20 sizes: B = 357 – 1998 mm (in R20 increments), H = 357 – 1998 mm (in R20er increments)

Construction

• Galvanised sheet steel, corner holes on both sides, brass bearings
• G: Flange holes on both sides

Parts and characteristics

• Frame
• Blade
• Spring return actuator
• External linkage
• Travel stop (angle section), side B
• Side seal, side H

Attachments

• Installation subframe ER
• Duct smoke detector
• TROXNETCOM

Construction features

• Rectangular casing, welded, material thickness 1.25 mm
• Blades, material thickness 1 mm, opposed action
• Flanges on both sides, suitable for duct connection, either flange holes or corner holes
• Spring return actuator on the 2nd blade (for all sizes)
• Control input signal from the central BMS or TROXNETCOM
• External linkage, robust and durable, consisting of the coupling rod and and horizontal arms
• Blade shafts, Ø12 mm, with notch to indicate the blade position
• Construction and materials comply with the EU directive and guidelines for use in potentially explosive atmospheres (ATEX)
• Side seals between the regular blades and the frame
• Travel stop (angle section) ensures tight closure of the top and bottom blades

Materials and surfaces

• Casing, blades and travel stop (angle section) made of formed galvanised sheet steel; flanges on both sides with corner holes
• Blade shafts, drive arm and external linkage made of galvanised steel
• Side seal made of stainless steel
• Brass bearings

Standards and guidelines

• German 'Bau- und Prüfgrundsätze' [Principles of Construction and Testing], 2/84 edition
• Maintenance standards DIN 31051 and EN 13305

Maintenance

• Smoke protection dampers and duct smoke detectors must be maintained regularly and must be operational at all times
• To maintain the normal function of the unit, or to re-instate its normal function, maintenance standards DIN 31051 and EN 13305 must be complied with
• Smoke protection dampers must be maintained at least every 12 months
• A maintenance report must be created; documents must be kept for reference
• Maintenance-free as construction and materials are not subject to wear