Y.
Mark Eckard
[email protected]
-----Original Message-----
From: "Top Myers" <[email protected]>
Sender: [email protected]
Date: Wed, 22 Sep 2010 16:26:58
To: <[email protected]>
Reply-To: [email protected]
Subject: RE: Anti Freeze for commercial
Good points on both put in suggestions to code to consider if you have a
suggestion you feel needs to be in code.
On testing we are arguing against adding concentrate to premix. We are
told by chemical company it should not degrade but I would prefer to
hear from all you users experience with premix.
Top Myers
RelMark Group
961 Pottstown Pike
Chester Springs, PA 19425
610-321-2415 X-219 Cell 610-952-0965
[email protected]
-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Thom
Sent: Wednesday, September 22, 2010 12:46 PM
To: [email protected]
Subject: RE: Anti Freeze for commercial
First off for those of you with these "Good Ideas" NFPA 13,13D &13R are
still accepting proposals until 10/1/2010.
Next question, the consensus seems to be Pre-mixed OK? When we require
testing of antifreeze solutions, and in 13D re-mixing to maintain
concentrations, there must be some separation going on, right? So how
will
we deal with higher concentrations that may occur over time?
-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of George
Church
Sent: Wednesday, September 22, 2010 10:11 AM
To: [email protected]
Subject: RE: Anti Freeze for commercial
We've likewise used AF to be able to install CPVC in existing attics
where
steel would be a nightmare, or other things like avoiding 30% increase
in
MRA off a limited water supply.
I'm not a registered design professional, but ones I've talked to about
this
seem to agree the premix is fine.
Items to watch for in addition to the obvious concentration are high
pressure which leads to smaller droplets and existence of
devices/equipment
with open flames that could provide the spark like the unit heater in
NJ, or
coking facilities. Yes, Roland, NFPA limiting it to residential missed
restaurants which could have AF, have done them, but in PA we're using
premix so we believe we don't have a problem revealed in Ph 1 or 2
testing,
and we're watching for the release of further testing to prove to the
point
NFPA desires that we continue to have a high level of confidence in the
premix concentrations.
glc
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