LTV-180FR Fire tested to
AS/NZS-1668-1-1998-4.8
Standards by CSIRO

The Lowline Turbo ‘Fire Tested’ Ventilator is specifically designed for large isolated buildings that require natural ventilation under normal conditions and now with the unique advantage of being able to operate in extreme fire conditions, while at the same time, exhausting smoke from the building.
The Lowline Turbo Ventilator has been fire tested to the requirements of AS/ NZS-1668-1-1998-4.8. Smoke Spill, with the result of greater safety for the occupants. It also increases the fire fighters ability to enter a burning building, secure in the knowledge that the ventilators are fire tested to operate and withstand temperatures far in excess of 300° and a time
frame of over 2 hours.

Test Standards:
Australian Standard/New Zealand Standard 1668.1-1998.

Description of Specimen:
General. The test specimen consisted of a steel turbo vent positioned on top of a specimen holder. The furnace exhaust vents were blocked off so that the furnace vented through the specimen and a fan was positioned on one side to simulate a cross wind over the vent. The turbo vent was made from 0.8mm thick zincalume mild steel.

Temperature Conditions:
AS1668.1-1998 Section 8.8.1
(a) In a sprinklered building the fan shall operate for a period of not less than 120 minutes with a smoke-spill air temperature of 200°C;
(b) the fan shall operate for a period of not less than 30 minutes with a smoke-spill air temperature of 300°C.

After 120 minutes the standard time/temperature curve defined in AS1530.4-1997 was followed for 30 minutes.
After 150 minutes a temperature of 900°C was requested by the client for the remainder of the test.

Termination of Test: The test was terminated after 180 minutes.

Test Number: FS3616/2564

Furnace Temperature
Figure 1 shows the standard curves of temperature versus time for heating the furnace chamber and the actual curves of average and maximum temperature versus time recorded during the heating period.

CSIRO Assessment Conclusion:
Assessment Number FCO-2315
Following the successful testing of the LTV 760 our range of turbo vents (LTV-400, 450, 500, 600, 685, 760, 840, 900, 1050, 1200.) were assessed in accordance with AS1668.1 Section 4.8 and would continue to operate under the following conditions:

a) not less than 120 minutes at 200°C

b) not less than 30 minutes at 300°C