Type HS Emergency & Fire Up Blast Power Roof Ventilators

APPLICATIONS: American CoolAir Type HS power roof ventilators are designed and built to meet the increasing need for power venting the combustion by-products of a fire. These units are designed to be installed in the roof systems of shopping centers, wholesale warehouses, hotel atriums, staircases and any other place where building codes require the removal of smoke and heat by power roof ventilators.

CONSTRUCTION:All critical components required for the continuous and safe operation of the unit and exposed to the air stream are ferrous construction to withstand high temperature conditions. The wind shroud is made of galvanized steel and the damper doors are made of fiberglass with ultraviolet inhibitors. The belts and bearings are protected from the airstream, enclosed in a ventilated tube. A heat slinger/impeller mounted on the same shaft as the PRV’s axial impeller isolates the fan bearings from the damaging heat and draws cooler outside air through the motor compartment and over the belts and bearings. A spring loaded, fusible link activated device automatically opens the damper doors when the temperature at the doors exceeds 165° F. This enables the HS fan to also function as a gravity ventilator prior to powered operation or in the event of a motor or electrical failure. The PRV’s are designed for all weather operation. The steel wheel assemblies are statically and dynamically balanced for smooth operation. Each PRV features an inlet guard constructed of 1” x 1”, galvanized wire mesh. The steel fan shaft is supported by two (2) heavy-duty pillow-block bearings that are mounted in an enclosed tube to provide reliable and continuous service under harsh conditions. The motor is located out of the airstream and is thus protected from the high temperatures of the airstream.

MOTORS: Totally enclosed fan cooled motors are standard. Several alternatives, such as explosion-proof motors, energy efficient motors and severe duty motors, are available to fit your specific needs. Only nationally recognized brand motors with nationwide service facilities are used.

CERTIFICATION: Both HSE and HS models have been designed to exceed the high temperature capability requirements of UL’s “Power Ventilators for Smoke Control Systems” (UL793), the IRI requirement to operate at 500°F for 2 hours minimum, and the SBCCI requirement to operate at 1,000° F for 15 minutes. (UL793 – MH18299). All Type J ventilators are listed by Underwriters Laboratory, Inc. to U.S. and Canadian safety standards. Certified ratings licensed by AMCA (Air Movement and Control Association, Inc.), for both air and sound performance are available for all Type J and JTE PRVs. (UL705 – E39944)