And to add to Mr. Ford' response, that is what my Amerex manual states.
Memory tells me that Range Guard and Pyro Chem have the same information.
But, there are always updates and changes to the codes. I called the Amerex
factory this AM and am waiting for a response.
If sprinklers or chemical nozzles are used, UL listed panels will be
required for access. I only know of one UL listed panel, Flame Gard @
[email protected] or 800.334.3072. If sprinkler are used, does the water
reduce the effectiveness of the wet chemical. I remember a couple of jobs
we did where the exhaust system had a water wash system. The water wash
system was designed to activate in case of fire. I was advised to disable
the water wash in case of fire so the water would not dilute the chemical.
Douglas Hicks
General Fire Equipment Co of Eastern Oregon, Inc
----- Original Message -----
From: "Ford, Charles" <[email protected]>
To: <[email protected]>
Sent: Monday, January 26, 2009 5:40 AM
Subject: RE: Calculating sprinklers in horizontal grease ducts
Quoting from Ansul's R-102 design Manual 3/1/07 Rev #7. "All duct
protection is UL listed without
limitation of maximum duct length (unlimited length). This includes all
varieties of ductworks both
horizontal and vertical including ducts that run at angles to the horizontal
and ducts with
directional bends."
Hope this helps
C. Burton Ford
Designer- NICET Certified:
Cintas Fire Protection-D-47
Warminster, PA 18974
Phone 267-487-1000
Fax 267-487-1010
-----Original Message-----
From: [email protected]
[mailto:[email protected]] On
Behalf Of Ron Greenman
Sent: Sunday, January 25, 2009 11:49 PM
To: [email protected]
Subject: Re: Calculating sprinklers in horizontal grease ducts
Mike,
ANSWERS IN CAPS
and meet the intent?
ALTHOUGH iIT MAY MEET THE INTENT IT DOESN'T MEET THE LISTING AND
THAT'S WHAT I'M CONCERNED WITH.
Any possibility of the UV duct hood cleaners and reduction of
protection, i.e. what I've heard about the B.C. experience?
THIS IS POSSIBLE--ROTO-CLONE, ELECTROSTATIC PRECIPITATOR, ACTIVATED
CHARCOAL FILTER, ETC., BUT I'D RATHER AVOID THESE EXPENSIVE AND
TYPICALLY MAINTENANCE NEGLECTED DEVICES.
If you use sprinks, can you recommend a "watertight" duct system with
enough slope to take the water to a "safe" place? Like outside?
GREASE DUCTS ARE WELDED AND THEREFORE GREASE/WATER TIGHT BY DESIGN.
EVERY TURN AND LOW POINT REQUIRES AN INSPECTION/CLEANING ACCESS PLATE
(ALSO GREASE TIGHT) AND WILL THEN EITHER DRAIN BACK TO THE HOOD, AN
ELBOW WITH ACCESS OR OUTSIDE.
I'd calc every one of them....... up to the equivalent design area of
the building.
I'D CALC EVERYONE ALSO BUT WHAT I'M LOOKING FOR IS GUIDANCE ON THE
HAZARD AND/OR DENSITY.
On Sat, Jan 24, 2009 at 7:04 PM, Michael Fitz <[email protected]> wrote:
Ron,
--
Ron Greenman
at home....
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