I believe that you calculate it as a dry system only if you go over 200 gallons in LH. Refer to Table F in the data sheets.
Regards, Dale F. Wingard, SET Designer Commercial/Marine Division NICET IV #76284 Water-based Systems Hiller Systems A Division of The Hiller Companies, Inc. 3751 Joy Springs Drive Mobile, AL 36693 c: 251.509.7108 o: 251.661.1275 ext. 10145 HillerFire.com Protecting life and property since 1919 -----Original Message----- From: Sprinklerforum <[email protected]> On Behalf Of J H via Sprinklerforum Sent: Wednesday, February 10, 2021 11:30 AM To: [email protected] Cc: J H <[email protected]> Subject: Re: Tyco LFP - antifreeze So wait, you have to calc as if it's a dry system per the manufacturer PLUS if you're over 40 gallons you have to calculate Darcy Weisbach? So a Dry-Darcy-Weisbach calc? Man, o man! Darcy Weisbach seems counter intuitive to me... the more demanding calculation requires larger pipe sizing which in turn means more antifreeze to have to disperse from the system before water comes out. <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail&utm_term=icon> Virus-free. www.avast.com <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail&utm_term=link> <#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2> On Wed, Feb 10, 2021 at 9:42 AM Scott Futrell via Sprinklerforum < [email protected]> wrote: > Good morning. > I've looked at the flyer briefly and it certainly is moving in the > right direction. > With record lows in Minneapolis and many other locations that are > colder than -25°F in the northern tier of states I wouldn't do it > unless it was a loading dock or somewhere where water damage could be > limited. It only takes one year of not testing it and really > (undefined 'really') cold temperatures and you have a water loss and system > out of service. > I understand the nitrogen cost and owner push back. It is unfortunate, > but it is what it is. I believe the long-term fire protection we all > long for is dependent on educating owners in many respects and that is one of > those. > Nitrogen is necessary, IMHO, to extend dry systems with black steel > schedule 10 piping from ten (without nitrogen) to twenty years or more > with nitrogen. > > Scott > > Office: (763) 425-1001 x 2 > Cell: (612) 759-5556 > > -----Original Message----- > From: Sprinklerforum <[email protected]> > On Behalf Of David Williams via Sprinklerforum > Sent: Wednesday, February 10, 2021 9:19 AM > To: [email protected] > Cc: David Williams <[email protected]> > Subject: Tyco LFP - antifreeze > > Hey Scott and other cold weather practitioners in Fire Protection. Any > feed back on the "new" Tyco LFP antifreeze. Looks like it may have > some use in southern MN locations, but with Duluth at annual 99% > extreme of -24.9 and 50 year extreme at -36.6 maybe not such a good > idea yet. We plan on sticking with the dry systems we have been > specifying since the flammability concerns about glycol came out > unless working south of Minneapolis! > > As per Scott we spec nitrogen for dry systems, but it sure seems > owners want to take the VE from the sprinkler contractors even when we > present the long term value to them. > > David Toshio Williams, PE*, FPE - Lead MEP/FP Engineer (*Registered in > MN, WI, MI, IA, IL, IN, ND, VT) > 21 West Superior Street, Suite 500, Duluth, MN 55802 Direct > 218.279.2436 | Cell 218.310.2446 LHBcorp.com LHB, Inc. | PERFORMANCE DRIVEN > DESIGN. > > ...sent from the cloud through the tubes! > _______________________________________________ > Sprinklerforum mailing list > [email protected] > > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkl > er.org _______________________________________________ > Sprinklerforum mailing list > [email protected] > > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkl > er.org > _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org
