This multi-function module combines two monitor inputs and two relay outputs into one device. The module is capable of Class B supervised wiring to the monitored devices. It also contains Form C relay contacts allowing the panel to switch the contacts on command. There is a dedicated LED on the module for each input and output. The control panel can use these bi-color LEDs to indicate normal, alarm and trouble conditions.
Archive for the ‘ HVAC Monitoring ’ Category
The InnovairFlex D4120 4-wire photoelectric duct smoke detector features a pivoting housing that fits both square and rectangular footprints and mounts to round or rectangular ductwork. This unit senses smoke in the most challenging conditions, operating in airflow speeds of 100 to 4,000 feet per minute, temperatures of –4°F to 158°F, and a humidity range of 0 to 95 percent (noncondensing).
Gain an even higher level of protection for facility-wide fire and life safety systems with System Sensor multi-voltage conventional relays. These relays control high-current switching applications in an overall fire protection system, such as fan and damper assemblies, doors, elevators, air handling systems and other types of system interfacing.
LifeSafety interviews Angie Wells, P.E., principal, and Rodwell King, senior project manager, of GPD Group in Akron, Ohio. GPD Group is a multi-disciplinary A/E firm that provides architectural, interior design, mechanical, electrical, structural, civil engineering and construction administration services to clients nationwide. Q. How much responsibility does the architect assume for life-safety matters? King: The [...]
Canada’s Largest Telecom Chooses Laser Duct Smoke Detectors for Very Early Warning Capabilities Bell Canada, a company that supplies innovative solutions and services, had a problem. It needed smoke detectors that would provide reliable, very early warning, to protect its telecommunications rooms. Those high-asset areas with high air flow are very sensitive. Even small traces [...]
“Necessity [is] the mother of invention,” penned playwright George Farquhar. Many fire and life safety products have come about following tragedy. Cries for change immediately following major fires have led to new laws and building code changes, and oftentimes they have served as the impetus for new technologies that better protect people and property. Then [...]
Tenants come and go. One month, an area might be filled with a maze of cubicles, the next, it may be a suite of private offices. As each new company takes over space in a building and adapts it to their needs, there’s a completely different set of fire-protection guidelines. However, the same versatility of space that makes a building desirable for renters can also present challenges when it comes to fire protection.
Billy Taddeo, a foreman in physical plant operations for Broward County School District’s maintenance division, is responsible for protecting more than 270,000 K-12 students and 38,000 district personnel. The Broward County School system in Florida is the nation’s largest, fully accredited school district, with 273 facilities covering more than 36 million square feet. Taddeo is NICET II (National Institute for Certification of Engineering Technologies) certified.