Fire Alarm Interface With Hvac Wiring Diagram. A wiring diagram is a sort of schematic which uses abstract photographic icons to show all the interconnections of elements in a system. When a fire alarm occurs it is common to shut down hvac equipment to reduce the spread of smoke and air to feed a fire.
Sai han lin sunday 21 july 2019. Simple interface pac sa89ta system diagram onoff adapter 3 wire adapter indoor 1 x x x x x x x x x x x x x x x vfc x x x x night mode and demand control 3 wire adapter outdoor 1 x x x x x x x x x x x x x x x x x x x vfc notevfc. Input unit output unit either monitored or unmonitored for faults inputoutput unit.
Upon receiving a short open or the reversal of polarity form the signal circuit of a fire alarm control panel the acm8 will trigger all outputs except those that are programmed other wise eg.
Icons that represent the elements in the circuit and lines. These contacts should be normally closed and open on alarm. The main supply is 120v ac in us and 230v ac in eu. Duct smoke detectors are required unless the entire area covered by the air handler is protected with smoke detectors.