HVAC Fusible Links

When choosing a HVAC college program, the first thing that you must ascertain is that the destination college you have selected is an accredited one. We cannot stress this point highly enough, as it means that the training program imparted will be at par with the standards specified by regulated HVAC organizations.

The most prominent accrediting agencies for HVAC training programs are the National Center for Construction Education and Research, which is the Partnership for Air-Conditioning, Heating, and Refrigeration, HVAC Excellence, North American Technician Excellence and Research, Environmental Protection Agency, and the Occupational Safety and Health Administration. Select a college that has a minimum of at least one accreditation.

It is also important to try and find small class numbers, which means you will receive personalized assistance from the program teachers. The best colleges teaching HVAC courses will also have an on college science lab with modern equipment. Visit the campus and get a feel of the place, the teaching areas, the overall facilities offered and talk to the senior lecturers, if they are available. Also find out if they provide any flexibility in scheduling classes for students with external jobs, and also how you could go about requesting financial aid, if you might need it.

Fire Protection in HVAC Systems In place Of fusible links, some manufacturers use other heat responsive devices. Curtain fire dampers are held open by a fusible link, and they close by gravity or a spring when the link comes apart.

Assemblies to provide protection where HVAC components pene-trate the ceiling membrane. IMPORTANT NOTE use of fusible links is unacceptable. Damper frame shall be a single piece of minimum 20 gage (1.0) galvanized steel formed in to an integral sleeve.

Dampers in dynamic HVAC systems. • Meets the requirements for BOCA, SBCCI, UBC, IBC and associated local building codes. FUSIBLE LINK (REPLACEABLE) 4 1/4" (108) H = DUCT SIZE + 1/8" (3) OVERALL HEIGHT STAINLESS STEEL CLOSURE SPRING CURTAIN BLADE LOCKING RAMP

Unitary Electric Heater Five Year Warranty Terms Warren Technology guarantees the heater section consisting of the resisting coils and supporting racks (except fusible links and overcurrent fuses) for a period of (5) five years

IMPORTANT: It is the specifier’s responsibility to properly configure the HVAC system to meet the appropriate level of comfort, safety, security and detention ORDER SIZE & DOOR CUTOUT All Dimensions ±1/32 1 3/4" FUSIBLE LINK LOUVER with

A fusible link is usually four (4) wire sizes smaller than the circuit that it is protecting. The insulation of a fusible link is a special nonflammable material. This allows the wire to melt, but the insulation to remain intact for safety.

By the melting of a fusible link at 165°F [74°C]), blocking the opening and preventing the spread of fire into the adjoining compartment. • STATIC rated fire dampers can be applied only if the HVAC system is automatically shut down in the event

And 165°F fusible link. Non-sealed transition for low pressure, 100% free area applications. UL and CUL classified. FM approved. For use in “dynamic” HVAC systems that remain operational during fire. Features 20-ga. galva-nized steel frame,

The fusible link shall be reinstalled after testing is complete. After installation and wiring of new actuator it shall be tested. The test shall be conducted with normal HVAC airflow. d. When equipped with smoke detection activation, the smoke detector shall be activated and

Fire dampers with fusible links in HVAC ductwork will close under airflow conditions after fusible link melts. Inspections and Test Requirements The system is designed to permit periodic inspection of important components, such as fans,

HVAC system. They are used to accomplish system balancing. Each damper is equipped with a locking quadrant which fixes the damper blades in place after adjustment. These dampers are not intended to be used in applications as a positive shut off or for automatic control.

Fusible Links: Furnish quantity equal to 10 percent of amount installed. PART 2 – PRODUCTS "Installation of Warm Air Heating and Air Conditioning Systems." B. Comply with SMACNA's "HVAC Duct Construction Standards – Metal and Flexible" for acceptable materials, material thicknesses,