We can all see whether the smoke exhaust fire damper is normally open or normally closed. For the first-time users of boilers, it is not clear what to do. Secondly, some people don't know what the function of smoke exhaust fire damper is. If our home is heated by heating in winter, we need to install a boiler, so that the heating can be heated. Usually, all devices above the boiler have smoke exhaust fire dampers. We can see whether the smoke exhaust fire damper is normally open or normally closed first. For those who use the boiler twice, it is not clear what to do. Secondly, some people still don't know what the function of smoke exhaust fire damper is.

Is the smoke exhaust fire damper normally open or normally closed?

Smoke exhaust fire damper should be always open. Please refer to GB 15930-2007. In 2007, 07k 103- 1 Atlas of Fire Prevention in Building Smoke Control, Ventilation and Air Conditioning Design was inconsistent with GB 15930-2007. The atlas also has a 280-degree normally open and normally closed smoke exhaust fire damper. According to the national standard of smoke exhaust fire damper, it should be normally open. I have consulted the relevant professionals of Beijing Fire Bureau: if the smoke exhaust valve is installed on the exhaust pipe, it must be normally open; if it is installed on the exhaust pipe, it is normally closed, which is controversial. But since the country has norms, we should follow them.

Netizen's statement: the smoke exhaust fire damper is normally open or normally closed, depending on the form of the smoke outlet: when setting the normally closed smoke outlet, set the normally open smoke exhaust fire damper on the smoke exhaust branch pipe; When an ordinary normally open air outlet is set, a normally closed smoke exhaust fire damper is set on the smoke exhaust branch pipe; When a normally closed special fire-proof smoke outlet is provided, the smoke exhaust branch pipe is not provided with a smoke exhaust fire valve.

Smoke exhaust fire damper function

I normally open the smoke exhaust fire damper, which has the following functions:

1, normally open. In case of fire, the valve remains open.

2. When the pipeline temperature reaches 280℃, the fuse will act and the valve will automatically close.

3. Output the valve closing signal and interlock to stop the exhaust fan.

4. Close it manually and open it manually.

Second, the normally closed smoke exhaust fire damper has the following functions:

1, normally closed. In case of fire, the control center inputs DC24V power and the valve opens quickly.

2. Output the valve opening signal, and interlock and control the fire smoke exhaust fan.

3. Open it manually. Manual reset shutdown.

4, when the pipeline temperature reaches 280℃, fuse action, valve closed again.

III. Remote-controlled smoke and fire damper (wire rope control type) with the following functions:

1, which has all the functions of normally closed smoke exhaust fire damper.

2. It can be opened manually from a long distance and closed manually after reset.

3. The control distance standard of wire rope is 6m (super-long, customizable).

Four, automatic reset smoke exhaust fire damper, the function is as follows:

1, normally closed. In case of fire, the control center inputs DC24V power supply, and the valve automatically opens.

2. When the pipeline temperature reaches 280℃, the fuse will act and the valve will automatically close.

3. It can be opened manually.

4. After the valve is opened, manual reset is not required. As long as the DC24V power supply is input, the valve can automatically reset to the original closed position (this function is only available before the temperature sensor does not work. If the temperature sensor needs to be replaced after operation, this function can still be used).

After the introduction of this article, we mainly know whether the smoke exhaust fire damper is normally open or normally closed, and the smoke exhaust fire damper should be normally open, so if we use the boiler next time, we should remember to open the fire damper often, so we should remember this thing. If it is closed, it will probably affect the heating problem. In addition, the article also tells you what the function of smoke exhaust fire damper is.