【 Weak current College 】 fire damper, exhaust valve how to choose

Fire dampers include:
1. fire damper, fire control valve, normally open, 70 degrees off, usually installed in the duct passes through the firewall, fire off function, you can set the output telecommunications numbers, smoke more than 70 degrees valve closed, chain sent (Supplement), fan off;
2. smoke fire control valve, normally open, 70 degrees off, the same, but more of a telecommunications number input by eliminating control room remote control shutting down, generally used for normal air, fire, wind common duct systems, fire control shutting down when you do not need to fill a room of the wind;
3. fire dampers, 280 degree fuse closed, normally open, the output of the telecommunications number, and 1-similar, but different temperature fuse generally apply to fire exhaust pipe passes through the firewall, flue gas temperature of more than 280 degrees automatic fuse closed chain closed exhaust fan.
Exhaust valve:
1. smoke fire dampers (normally closed, open up the telecommunications number, 280 degrees fuse close, or manually close) generally applied to the exhaust system, you can install the exhaust fan inlet, fires by removing the CCR control on, off or you can chain closes the exhaust fan.
2. the exhaust valve, 3 with the above, each unit has a different name, in accordance with its action of temperature is called the exhaust valve, according to the nature of its use is called fire dampers, but for the device side just to plain fire damper of fuse metal into the 280 degree fuse one.
Exhaust outlet:
If you are in the pipeline installation the necessary exhaust valve, normal single louver; otherwise with plate heat exhaust outlet, it also comes with a rehearsal fire damper.