Turbo Ventilators

General Description
The IVR Lowline Turbo Ventilators with their rotating heads, powered by cost-free air, boosts the natural up-flow of hot and contaminated air. Typhonic ball bearing action enables the slightest motion of air to rotate the Turbo head. Suction and discharge are maintained with the centrifugal force caused by the freely revolving head creating a vacuum. Warm air rushes up to fill this vacuum and is expelled into the outside atmosphere, even in low wind conditions.

No opening in any position of the ventilators will funnel air back into a building. Engineered construction provides robust trouble-free ventilators that last for years and we warrant our products accordingly. The Typhonic® bearing system is sized to withstand many times the actual thrust loads carried and are lubricated for continual service. Careful balance and alignment assures quiet and vibrationfree operation. IVR Lowline Turbo Ventilators are efficient, aesthetically and psychologically appealing due to their effortless spinning motion.

Uses
The IVR Lowline TORNADO Ventilator is recommended for cyclonic areas IVR Lowline Turbo Ventilators are ideal for the general ventilation of factories, schools, public buildings, farm buildings and houses.

Design
The IVR Lowline Turbo Ventilator incorporates a number of superior design features to give maximum efficiency and continual trouble-free service even in adverse conditions.

Note: All dimensions shown are nominal and in mm. Subject to alteration without notice.

Accessories
Bases: Roof bases are required with IVR Lowline Turbo Ventilators and are precision manufactured in five basic types to suit job specifications and roof pitch.
Fabricated as standard in Zincalume or in galvanised steel, aluminium, stainless steel of the gauges and dimensions shown on the chart. The units can be supplied in two-pack polyurethane to match Colorbond colours. NOTE: For ventilators and bases LTV-500 and over, additional support between purlins is recommended.

Note: LB Series Transition Base enhances performance by 15% over the cylinder type spigot base

• Note: All Dimensions shown are nominal and in mm Subject to change without notice
• When ordering specify:
1 Roof pitch
2 Type of roof profile
3 Base type

Dampers: Disk dampers may be provided in the ventilator throat, if ordered with the ventilator. Likewise Butterfly dampers (one section of a disk hinged at the centre) are available in Models LB-500 to LB-1200. Electric operated damper motors available on request. Unit dampers installed in a separate section of duct are available as an optional application.

Bird or insect screens are normally not required for the revolving IVR Turbo Ventilators.




Certified tests
IVR Lowline Turbo Ventilators have been tested to AS 2428 Parts 1 and 2, wind and rain at 55m/s velocity by the CSIRO Laboratories and additional testing at the Twining Laboratories USA and similar to AS/NZS-4740:2000 at the UTS testing laboratories Ultimo. Ratings are based on formulas outlined in the American Society of Heating, Refrigeration and Air Conditioning Engineers guide for natural ventilation. Fire tested to AS/NZS 1668.1.1998 Part 1 Fire and Smoke spill Control.

Recommended air change periods
For natural ventilation requirements of industrial and commercial buildings, it is recommended the ventilators be spaced at approximately 6 metre intervals to provide an air change every 10 to 15 minutes. Large buildings may be figured as low as a 30 minute air change where conditions permit. Faster air change ventilation is recommended for areas where relief from hot or contaminated air trapped near the ceiling, is required.

Doors and windows should be provided for cross ventilation. If more frequent air changes are required it could be advantageous to consider the use of IVR Lowline 240V or 415V Booster Fans.