Past conversations with NFPA and others informed me that heat trace was originally prohibited due to the thought that it could fuse the sprinklers. NFPA admitted that to their knowledge heat tape had never done fused a sprinkler and they were aware that there was a lot of heat tape in service on branchlines throughout the country.
We just did a job where we used Chromalox products and learned a great deal. It is supposed to be around 100 deg max but under the worst conditions it will not exceed 150 deg. We are only using 3 watts per foot however and the temp varies accordingly from what I understand. We have used it once before and had no trouble whatsoever. Greg Living Water Fire Protection, LLC 1160 McKenzie Road Cantonment, FL 32533 850-937-1850 Fax: 850-937-1852 -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Dave Phelan Sent: Saturday, May 05, 2007 7:59 PM To: [email protected] Subject: Electric Heat Tracing - Background Hello again all, Im looking for the wisdom and experiences off the list for projects that used electric heat tape for freeze protection. I currently have a 13R-2002 (metallic piped) project where the owner is looking to use the Raychem XL Self Regulating heat trace for supplemental freeze protection. The piping will be insulated as per the code but they want a belt and suspenders. Im looking for the code background as to why the appendix specifically prohibits branchlines - rather forceful language I thought to be in the appendix and not the code itself but oh well. The project natually is looking to heat trace the crossmains and branches up to the drops for the concealed pendants in the living space, hence my concern. The product is reportedly listed UL for Fire Protection piping but I am still awaiting all of that submission, in the mean time I need to educate myself as to the why's and why not's in the code and branchline prohibition. Thank you once again. Dave P. An AHJ in New Jersey _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum To Unsubscribe, send an email to:[EMAIL PROTECTED] (Put the word unsubscribe in the subject field) _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum To Unsubscribe, send an email to:[EMAIL PROTECTED] (Put the word unsubscribe in the subject field)
