Multileaf Dampers Type JZ · JNE Type JZ-L and JZD-G (low leakage to the requirements of DIN 1946) TROX GmbH Heinrich-Trox-Platz D-47504 Neukirchen-Vluyn

Contents · Description Description Constructions Installation details Standard sizes · Flange drilling details Multileaf dampers are primarily used in ventilation systems for volume flow and pressure control. In addition, the type JZ-L and JZD-G satisfied the closed blade leakage requirements specified in DIN 1946 (leakage < 10 m3/h · m2 of damper cross-section with a 100 Pa pressure differential). The aerofoil section blades are coupled by external linkage, which can provide either parallel or opposed blade operation, or in the case of type JZ-G and JZD-G, opposed blade action only, via gears....

Construction Type JZ-A · JNE-A JZ-A – Casing and blades made from galvanised rolled sheet steel, casing flanges with holes in the corners on both sides – Blade spindles and external linkage made from galvanised steel – Plain bearings made from special plastic – Parallel blade operation – Drive arm may be located on any blade – Temperature resistant to 100 °C JNE-A – Casing, blade spindles and external linkage made from stainless steel, DIN ref. 1.4301, casing flanges with holes in the corners on both sides – Plain bearings made from special plastic – Parallel blade operation – Drive arm may be...

Construction Type JZ-B · JZD-B · JNE-B JZ-B – Casing and blades made from galvanised, rolled sheet steel, casing flanges with holes in the corners on both sides – Blade spindles and external linkage made from galvanised steel – Plain bearings made from special plastic – Opposed blade action – Drive arm may be located on any blade – Temperature resistant to 100 °C JNE-B – Casing blades, blade spindles and external linkage made from stainless steel, DIN ref. 1.4301, casing flanges with holes in the corners on both sides – Plain bearings made from special plastic – Opposed blade action – Drive arm...

Construction Type JZ-L (low leakage to DIN 1946) – Casing and blades made from galvanised rolled sheet steel, casing flanges with holes in the corners on both sides – Blade spindles and external linkage made from galvanised steel – Plain bearings made from special plastic – Blade tip seals made from special plastic; side seals made from foam material – Opposed blade action – Drive arm may be located on any 2nd blade – Temperature resistant to 90 °C Casing Blade Drive arm (x dimension, see page 9) External linkage Tip seals Landing angle (full width of the B dimension) Side seal/sliding disc Standard...

Construction Type JZ-G · JZD-G JZ-G – Case and blades made from aluminium extruded sections, case flanges with holes in the corners on both sides – Blade spindles made from galvanised steel – Gears made from special anti-static plastic – Galvanised steel drive arm – Blades inter-connected by gears located at each end of the blade – Temperature resistant to 90 °C JZD-G (low leakage to DIN 1946) – Case and blades made from aluminium extruded sections, case flanges with holes in the corners on both sides – Blade spindles (from H = 800 mm, 2 sections with coupling rods) made from galvanised steel...

Installation Details Type JZ-A · JZ-B · JZD-B · JZ-L · JZ-G · JZD-G Masonry subframe supply schedule: Galvanised steel masonry subframe; Screw-on builders cleats, special studs, screws, nuts and washers made from galvanised steel. Masonry subframe fitted to the multileaf damper, builders cleats fitted by others. Type JNE-A · JNE-B Masonry subframe supply schedule: Stainless steel masonry subframe with welded builders cleats nuts and washers in stainless steel. Type JZ-A · JNE-A · JZ-B · JZD-B · JNE-B · JZ-L Details of masonry subframe Builders cleat Installation opening without masonry subframe...

Installation Details Type JZ-A · JZ-B · JZD-B · JZ-L If the B dimension is greater than 2000 mm or the H dimension greater than 1995 mm, 2 dampers can be provided for installation side by side or one above the other. They may be installed either with or without a masonry subframe. The actuator is fitted by others on site. Mounting on the damper face using the flanges. Mounting can be above or below the drive arm. For executions with standard accessories (e.g. when using spring return actuators). Type JZ-A · JZ-B · JZD-B · JZ-L Subdivided on H dimension (H1 = 2 H + 76) Coupling rod, to be installed...

Standard Sizes · Flange Drilling Details Corner hole layout 1) Type JZ-A · JNE-A · JZ-B · JZD-B · JNE-B · JZ-L B Flange drilling details 1) Type JZ-A · JNE-A · JZ-B · JZD-B · JNE-B · JZ-L 20 H Even number of holes (hole pitch = 125 mm) Corner hole layout, Type JZ-G · JZD-G B Odd number of holes (hole pitch = 125 mm) Type JZ-A · JNE-A · JZ-B · JZD-B · JNE-B · JZ-L Standard sizes Number of blades, position of drive arm and number of holes as per the damper module size. All combinations of B, B1 and H, H1 can be supplied. Free area = B x H – (31 x B x number of blades) Free area = next smallest...

Type Construction variant abbreviation Casing both flanges drilled With brass bearings Casing both flanges drilled and brass bearings Subdivided on B dimension Casing both flanges drilled and subdivided on B dimension With brass bearings and subdivided on B dimension Casing with both flanges drilled, with brass bearing bushes and subdivided on B dimension Subdivided on H dimension Casing both flanges drilled and subdivided on H dimension With brass bearings and subdivided on H dimension Casing both flanges drilled, with brass bearings and subdivided on H dimension JNE-A JNE-B Type · Construction...