Canon 2000 manual Enclosures with excessive leaks, Enclosures with excessive upper leaks

If the room fails

Equipment calibration is often blamed for these failures but in over 12 years of 500 companies testing, it has never been a factor. It is usually that he room leaks too much. Airsealing looks simple but should be left to Weatherization contractors; NOT general contractors who may think they can do it but seldom can.

Enclosures with excessive leaks

Seal leaks at all elevations and retest.

Enclosures with excessive upper leaks

Grace FS 3000 Elastomeric coating is the best solution to the biggest leak. It has a fire rating and flexes so it does not crack and fall out when the floor moves under load.

These rooms may not pass the whole room test because of excess leakage where the walls connect to the upper slab. Just like for any other room, seal all leaks below ceiling, even very small ones. The floor slab to wall joint must be sealed throughout. Don't worry as much about leaks through electrical outlets and switches.

1.For rooms with suspended ceilings, do a BCLA flex duct test. Depressurize the entire space above the false ceiling.

2.For smaller rooms (up to 1000 square feet - about 250 lb. of agent) use polyethylene taped under suspended ceiling. Test in positive direction only; the software will adjust measured ELA based on static pressure. You may also cover and register or duct coming out of the ceiling.

3.BCLA may also be estimated with AHJ and entered manually. Use the spreadsheet on the Lower Leak tab.

4.Accept larger rooms with thorough smoke pencil inspection per 4-7.2.3 The AHJ should not be able to uncover any remaining discernible leakage.

Increase agent quantity?

2000 Fire Door-Fan Manual updated 2002-05-28 Page 33 of 58