![]() |
|
ROBERTSON
VENTILATION INTERNATIONAL |
Exhaust Systems |
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|
The Robertson QDP is designed as a dual purpose unit which, under normal conditions, functions as an efficient Slope Mounted Natural Ventilator. Should fire conditions occur, the unit will automatically open to provide an almost unrestricted exhaust area. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|
Smoke/Heat Release Systems When combined with regular fire-fighting equipment, fire ventilation can be extremely effective in minimising damage. Robertson Smoke/Heat Release ventilators are designed to release fire fumes and smoke from the interior of buildings through self-opening or remote controlled roof-mounted ventilators. This helps reduce the spread of toxic fumes and gases within the building, allowing those inside to exit safely while improving visibility for those entering the building on fire-fighting tasks. In addition, Robertson Smoke/Heat Release ventilators help confine the heat released by fire to a small area, limiting damage due to the spread of heat and smoke. In the 1920's Robertson was the first to offer automatic dampers to control fire development in buildings. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Dimensions and Mass:
| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Specification The ventilators shall be of the QDP type as manufactured by HH Robertson and shall be of the size as indicated on the drawings. Ventilators shall be weatherproof under all positive pressure conditions and shall provide continuous natural ventilation when the internal dampers are in the open position, regardless of external weather conditions. The ventilators shall be capable of withstanding a wind load of 1.44 kPa and shall have a free area of exhaust at least equal to the stack opening. As fire ventilators, the units shall have a free area of vertical discharge at least equal to the stack opening and shall be fitted with fusible links rated to operate at 71 °C. The ventilators shall be constructed in Versacor Protected Metal, Zincalume - Plain or Painted, or Aluminium. Provision shall be made to permit manual operation from the roof for testing purposes without disturbing the release mechanism. Options Available: 2. All units shall be provided with dampers which shall provide pressure relief on an increase of internal pressure in the building of ??.Pa.
| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Contact your nearest RVI service centre for performance details and technical advice. |