For more information on McKenzie-Martin visit www.barbourproductsearch.info C1/SfB (57.8) Xh2 Leaflet No. M/K-3 McKenzie Martin Ltd NATURAL Ventilation Mackridge For more information on McKenzie-Martin visit www.barbourproductsearch.info In any natural Ventilation scheme involving conventional industrial buildings the optimum position, under normal circumstances, is to provide a system of air extraction through the highest point of a building - the roof apex. The Mackridge is a natural Ventilator designed specifically for mounting along the ridgeline of a building. It can be manufactured in single unit or continuous form, to suit any pitch of roof and can be fixed to any type of sheeted or decked roof. The relative position of the Ventilator along the roof apex maintains the longitudinal symmetry of the building appearance, unlike many other types of natural ventilators. The Ventilators are offered in a range of materials and colours to colour match or contrast with the roof claddings. Each Ventilator is custom made to suit individual requirements with a variety of functional and control options. Product Flexibility McKenzie Martin custom build each ventilator unit to suit the particular building structure, dimensions and characteristics. The unit illustrated was manufactured for mounting onto the apex of a roof having an unequal roof pitch, in this instance a northlight roof. Please consult our sales staff if your requirements fall within this category. Uneven roof pitch Kenstack For more information on McKenzie-Martin visit www.barbourproductsearch.info The Kenstack is a Natural Ventilator suitable for mounting onto any type of roof sheeting and decking or into glazing in either a sloping or flat horizontal position. With similar functional performance to the Mackridge Ventilator they are particularly suited for installation onto buildings having an unequal roof pitch, for example a North light constructed roof. Each unit can be custom made to suit existing purlin or glazing centres with the minimum of disturbance since no additional supporting framework would be required. The Ventilator base flange can be formed to suit any type of profiled roof sheeting. Each Ventilator is offered with a variety of functional and control options. General Information 1. Permanently Venting. 2. Controllable ventilation - by means of operable internal damper. ▲ Functional Options ▲ 3. In the event of a fire the Damper can be fitted with a fusible link and spring loaded to open or close as required. Options 1. Extension plates to ventilator base end flanges. 2. Internal closure flashing to close off the cavity where a roof has an overpurlin lining. 3. Bird Guards - 1.2mm Expanded metal Aluminium Alloy. Diamond mesh size: 12.35mm x 35.05mm. 4. Security guards - 5.8mm square Stainless Steel mesh 1.6mm thick. 5. Fusible Link Shields - for use in sprinklered buildings. Materials/Finish British Steel plastic coated galvanised steel. Colorcoat HP200 Plastisol available in a full range of colours. Mill finish or coloured Aluminium Alloy to BS1470 3103 H14 (NS3 H4) and Galvanised Steel in Stoved Acrylic, Chlorinated rubber, PVF2, Polyester Powder coatings, alloyed amino and anodised finishes. Alternative materials available are: Planja, British Alcan, Dobel, Hoesch, Korrugal, Gavle, Zintecsteel. For more information on McKenzie-Martin visit www.barbourproductsearch.info Control Options Manual - Nylon covered wire cable to: a) Clam Cleat/Clutch Control - variable setting. b) Winch - variable setting. c) Friction loaded - variable setting. Pneumatic For day to day ventilation incorporating Firemans override if required. Additional options include connection to smoke detection systems, thermostats, time switches etc. Fusible Links These can be fitted in conjunction with any of the above control options to provide overriding release. Alternative temperature rated links are available. Electro-Magnets These retain the damper in the closed position until de-energised by remote signal. Units fitted with electro-magnets require manual re-setting. 24V Electric - Actuator or Motor To open and close internal damper. Maintenance Where units are damper controlled we advise periodic testing to maintain correct functioning. Fixing Fully detailed fixing instructions supplied with units. Ventilation Schemes Recommendations on complete schemes prepared and submitted on request. Product Dimensions In practice, all units are made to measure to suit the particular mounting detail required. However, to assist specifiers and design engineers we illustrate below some of the more popular sizes. MACKRIDGE / KENSTACK Dimensions Throat Overall Width Lengths Height A B C Overall Width D 152mm 178mm 305mm 18Kgs 28Kgs 203mm 279mm 406mm 22Kgs 35Kgs 254mm 330mm 508mm 25Kgs 41Kgs 381mm 610mm 48Kgs 610mm 30Kgs TO SUIT 762mm 35Kgs MOUNTING 914mm 42Kgs DETAIL 1.016mm 50Kgs 686mm 1.219mm 55Kgs 88Kgs 305mm 381mm 457mm 508mm 610mm From 1.220m to 3.00m 457mm 533mm Flanges Side/End E&F Approx. Weights Alum inium Plastisol 56Kgs 68Kgs 80Kgs 762mm 889mm 1.524mm 65Kgs 104Kgs 914mm 1.143mm 1.829mm 70Kgs N.A. Whilst the above sized units cater for most standard requirements - non standard units can be tailor-made to suit special requirements. McKenzie Martin Ltd Eton Hill Works, Eton Hill Road, Radcliffe, Manchester M26 2US Tel: 0161 - 723 2234 Fax: 0161 - 725 9531 Due to a company policy of continuous improvement, alterations in the specifications may be made at anytime without notice. The company accepts no responsibility for any discrepancies which may occur between the specification of its equipment and the descriptions contained in its publications.