Kitchen Ansul System R-102

[hbiss]

My observation is the exhaust hood and ducting will get grease build up and that if you would have a fire make it's way into the duct, you are probably better off having the fan running - will sort of keep the fire contained to the duct, as it would act more like the burner on a large boiler or other industrial burner with air flowing over the burner. Stop the fan and it heats up the duct and anything around it.

There is usually a nozzle or two within or at the bottom of the exhaust duct. Keeping the exhaust fan on will draw the foam mist up into the fan and upper ductwork helping to suppress any grease fire within.

-Hal

 

[kwired]

There is usually a nozzle or two within or at the bottom of the exhaust duct. Keeping the exhaust fan on will draw the foam mist up into the fan and upper ductwork helping to suppress any grease fire within.

-Hal

Even better. My reply sort of based on a couple old systems I've been around, still in use that are only in place because they are "grandfathered" that I definitely know would be easy to have a fire in the duct with the years of grease that is accumulated. Leaving the fan run if that should happen is probably best for keeping it from spreading to the structure even if foam isn't drawn into it.

 

[ramsy]

No. A Halon suppression panel will have battery backup ..most panels will shut themselves down before they reach the point of unpredictable operation. I have heard of panels discharging ..after a prolonged power outage, but I don't believe it's common.

Thank You