UL-726-BULLETINS-2005.pdf

Subject 296(296A, 307A, 307B, 726, 727, 729, 730, 731, 732, 733, 795, 896, 2096, 2106) November 4, 2005 SUMMARY OF TOPICS The following topics were discussed at the meeting: 1. Used cooking oil. 2. Bio-Diesel. 3. New UL 295. 4. Document for electrical requirements for combustion equipment. 5. STP 296 future. 6. Component marking proposed by CSD-I and National Board. 7. Canadian boiler assemblies evaluated to CAN I - 3.1. 8. New Business - Definition of Proof of Closure Overtravel Interlock. 9. New Business - Harmonization with European requirements. IO. New Business - Requirements for condensing appliances. II. New Business - Ignition systems used in conjunction with a solid state ignition module. COMMENTS DUE: December 4,2005 A meeting of the Standards Technical Panel of UL for Furnaces and Heating Equipment, STP 296, was held on October 18, 2005 at ULs Northbrook Office. As a result of discussions regarding topics 1 and 11, two workings groups were formed. At the end of this report is a list of these working groups, with their objectives and a list of their participants from the meeting. If you would like to volunteer for one of these working groups, please contact Tim Corder at William.T.Corderus.ul.com by December 4, 2005 1. Used cooking oil. MEETING DISCUSSION Travis Hardin of UL made a presentation regarding the potential use of used cooking oil as a fuel source for used oil-burning air-heating appliances covered by UL 296A. Meeting attendees discussed some potential issues that would need to be addressed during development of these requirements. In particular, the specifications of the test fuel to be used during evaluation would need to be defined. Other concerns Copyright Underwriters Laboratories Inc. Provided by IHS under license with ULLicensee=Defense Contract Mgmt Command/5935922100 Not for Resale, 08/27/2006 10:57:44 MDTNo reproduction or networking permitted without license from IHS -,-,- SUBJECT 296 -2- NOVEMBER 4,2005 discussed during the meeting were related to the compatibility of used cooking oil fuel and fuel transport issues. As a result of the discussions at the meeting, Working Group 1 was formed. Please refer to the end of this report for Working Group 1 charges and members. 2. Bio-Diesel. MEETING DISCUSSION Travis Hardin of UL presented the topic of using bio-diesel as a potential fuel for oil burners covered by UL 296. Concerns expressed at the meeting regarding bio-diesel relate to its combustion; its compatibility with burners, in particular the seals of burners; and its storage, stability, and handling. However, there was unanimous support from those in attendance with adding B20 fuel to UL 296 once that data has been developed to address the aforementioned concerns. This was regarded as a first step, which may lead to the use of higher percentage bio-diesel in the future. 3. New UL 295. MEETING DISCUSSION Travis Hardin of UL discussed UL?s plans to develop a Standard for Commercial-Industrial Gas Burners, UL 295. The main intent of developing this standard is to enable burner assemblies to be evaluated independent of the main appliance. Also, it is believed that the development of UL 295 would serve to focus the scopes of UL 795 and UL 2096, and reduce confusion that AHJs and industry members might experience regarding these products. The main sources of these requirements would be existing requirements in UL 795 and UL 2096. A suggestion was made during the meeting that integral burner requirements be kept in UL 795 and to only have requirements for conversion burners in UL 295. There was general support for this suggestion from those in attendance at the meeting. 4. Document for electrical requirements for combustion equipment. MEETING DISCUSSION Travis Hardin of UL presented his concept of combining the electrical requirements for combustion equipment into a single document. The intent of this concept is to group requirements that are intended to be the same across these standards into a single document. An alternate suggestion was made to group all the electrical requirements in the same Section of each standard. While this would still mean that there are separate electrical requirements in each standard, the intention of this suggestion was that they might more easily be kept the same were the requirements located in the same place in each Standard. Based on the input provided by the attendees, UL will consider the two options discussed at the meeting. 5. STP 296 future. MEETING DISCUSSION Travis Hardin presented UL?s intention of splitting STP 296 into two separate STPs, one for gas appliances, and another for oil appliances. An attendee suggested and alternative approach, whereby, the STP is broken into two STPs, one covering component (or burner) standards, and one covering standards for end products. Another suggestion was made that the STP be left as it currently is organized. A straw poll of STP members in attendance indicated that the majority in attendance supported breaking the STP into two STPs, one for component standards and one for end product standards. Please note that the STP as a whole would be polled prior to any action being taken regarding the reorganization of STP 296. Copyright Underwriters Laboratories Inc. Provided by IHS under license with ULLicensee=Defense Contract Mgmt Command/5935922100 Not for Resale, 08/27/2006 10:57:44 MDTNo reproduction or networking permitted without license from IHS -,-,- SUBJECT 296 -3- NOVEMBER 4,2005 6. Component marking proposed by CSD-1 and National Board. MEETING DISCUSSION Travis Hardin presented that the ASME CSD-1 Committee is proposing safety component markings for packaged boiler assemblies. This marking would consist of a list of the approved safety components being applied to the boiler. The intent of this marking would be to assist AHJs in determining the approved safety components for use with the packaged boiler assembly. An STP member stated that the CSD-1 marking is still in development, but that it may be finalized after the next CSD-1 meeting. Once that marking is finalized, UL will prepare proposals to incorporate this marking into the standards covered by STP 296. However, were the marking adopted, it would be optional for manufacturers to include it on their products. 7. Canadian boiler assemblies evaluated to CAN 1 - 3.1. MEETING DISCUSSION Travis Hardin discussed potential harmonization of UL 795 with CAN 1-3.1. CAN 1-3.1 has been revised to cover boiler assemblies from 400,000 Btu/hr - 50,000,000 Btu/hr, at a gas inlet pressure of greater than 1/2 psig. Some STP members expressed concern that CAN 1-3.1 is out of date, and that it might be beneficial to pursue harmonization more through CAN 1-3.1 adopting the requirements of UL 795, rather than the adopting the requirements of CAN 1-3.1 into UL 795. There was general support from those in attendance for that path of harmonization. UL will consider pursuing the harmonization. However, prior to the effort being undertaken, the STP will be surveyed to gauge its support for the effort. 8. New Business - Definition of Proof of Closure Overtravel Interlock. MEETING DISCUSSION STP member James Jagers presented his concerns regarding the proposed paragraph 2.81 .I of UL 795 and the similar proposed paragraph 3.120.1 of UL 795 and UL 2096. These definitions were proposed in CSDS work areas opened March 25, 2005. An STP submitted a comment that the proposed definition did not clearly define ”valve stem.” The commenter stated that unless the stem is an integral unit with the seal, then the stem may not provide a correct indication of the seal position, leading to the stem indicating that the valve is closed while the seal is open. The commenter supplied a suggested revision to the proposal to address the commenters concern. UL had indicated that it agreed with this comment. During the STP meeeting, Mr. Jagers expressed concern that the suggested change would make the proposal excessively design restrictive. Mr. Jagers will submit revised wording which he believes will be less design restrictive. UL will rework and repropose revised requirements accordingly. 9. New Business - Harmonization with European requirements. MEETING DISCUSSION Hal Bayless led the discussion regarding harmonization of the standards under STP 296 with European requirements. The STP Chair stated that UL supports harmonization and that the goal is to reduce the amount of deviations between the UL and European requirements. The process can take quite some time to come to fruition. As such, Standards Development Organizations (SDOs) must evaluate the need to harmonize before undertaking the harmonization process. Harmonization is generally industry driven, and the STP would be polled in an effort to gauge support prior to the harmonization process beginning. Copyright Underwriters Laboratories Inc. Provided by IHS under license with ULLicensee=Defense Contract Mgmt Command/5935922100 Not for Resale, 08/27/2006 10:57:44 MDTNo reproduction or networking permitted without license from IHS -,-,- SUBJECT 296 -4- NOVEMBER 4,2005 There was mixed support for those in attendance regarding harmonization of the Standards under STP 296 with European requirements. Fred Phillips discussed the use of UL 296A in Europe, and is to provide more information to the STP regarding UL 296A in Europe. Were harmonization to be pursued, UL 296A might serve to be the first standard to undergo the harmonization process. I O . New Business - Requirements for condensing appliances. MEETING DISCUSSION Travis Hardin of UL led a discussion regarding the proposed condensing appliance requirements for UL 795. A comment was received in response to the proposal presented in the UL 795 CSDS work area opened March 25, 2005. The comment stated that a corrosion test procedure should be specified in UL 795. In response, UL indicated that it agreed in principal with the comment. There was general support by the meeting attendees that the venting system for condensate pH levels less than 3 be evaluated according to UL 1738, Venting Systems for Gas Burning Appliances, Categories II, III, and IV. The proposal will be revised and recirculated to the STP for comment. 11. New Business - Ignition systems used in conjunction with a solid state ignition module. MEETING DISCUSSION Larry Gray discussed his comments that were submitted in response to the recirculation of the requirements for ignition systems used in conjunction with solid state ignition modules in UL 296. Similar requirements also would be necessary in UL 795, UL 2096, and Mr. Gray stated that the ability of a spark to jump a gap is a function of the peak voltage and frequency. Mr. Gray stated that dielectric testing done at 150% of the peak open circuit voltage and at a frequency of 60 Hz is unduly rigorous. Mr. Gray also stated that the electrode gap used during the dielectric withstand test should be the recommended spark gap plus an allowance for the in-service electrode tip erosion. The attendees found the concerns raised by Mr. Gray to be worthy of the formation of Working Group 2. Please refer to the end of this report for a list of the Working Group 2 participants and charges. Copyright Underwriters Laboratories Inc. Provided by IHS under license with ULLicensee=Defense Contract Mgmt Command/5935922100 Not for Resale, 08/27/2006 10:57:44 MDTNo reproduction or networking permitted without license from IHS -,-,- SUBJECT 296 -5- NOVEMBER 4,2005 STP WORKING GROUPS As a result of discussions regarding topics 1 and 11, workings groups were formed. Below is a list of these working groups, with their objectives, and a list of their participants from the meeting. If you would like to volunteer for one of these working groups, please contact Tim Corder at William.T.Corderus.ul.com. * Denotes Chair 1. USED COOKING OIL WORKING GROUP Objective: To consider, and draft, requirements for the use of used cooking oil as a fuel source for used oil-burning air-heating appliances covered by UL 296A. Of particular importance to be considered is the test fuel that is to be used during evaluation. Other concerns noted by the STP are the compatibility and fuel transport issues. When completed, draft requirements are to be reported to the STP as a whole. *Chair Names of participants Hal Bayless Randy Dean Travis Hardin Frank Meyers Fred Phillips* 2. SOLID STATE IGNITION WORKING GROUP Objective: To develop requirements for ignition systems used in conjunction with a solid state ignition module. Included in these requirements are to be the requirements for conducting the dielectric withstand test. The findings of this group are to be sent to the STP as a whole for consideration. *Chair Names of participants Larry Gray Travis Hardin* Fred Phillips Vic Turk Copyright Underwriters Laboratories Inc. Provided by IHS under license with ULLicensee=Defense Contract Mgmt Command/5935922100 Not for Resale, 08/27/2006 10:57:44 MDTNo reproduction or networking permitted without license from IHS -,-,- SUBJECT 296 -6- NOVEMBER 4,2005 ATTENDANCE AT THE OCTOBER 18,2005 MEETING OF THE STP FOR FURNACES AND HEATING EQUIPMENT STP Representatives Allan Alarie* James Bartek* Hal Bayless Denise Beach* Robert Benedetti* Michael Brooker* Ed Cancilla* Edward Charkey* Tom Chase* Donald Cox* John Elder* Donald Gottfried* Larry Gray James Hall Travis Hardin Thomas Harris* James Holter* Sidney Hubbard* James Jagers Gabriele Loduca James McDaniel* Frank Myers Allen Pirro* Wayne Schutz* Frank Stanonik* Gary Weidner* Steven Younis* Guests Randy Dean Wilbur Hagg Bola Kamath Krish Krishna Tom Nyman Fred Phillips Brandon Tudor Victor Turk Mark Wehmeier* Fireye, Inc. Honeywell International EEX Equipment Company National Propane Gas Association National Fire Protection Association Bradford White Canada Inc. Ajax Boiler Inc. York Unitary Products Group Wayne Combustion Systems Ara mark New York Dept. of Buildings R. W. Beckett Corp. Patterson-Kelley Co. UL U. S. Navy Hartford Steam, Boiler, Inspection & Insurance Oklahoma State University - Okmulgee Mestex Ltd. GSW Water Heating N. C. Dept. of Insurance PVI Industries, LLC Intertek Aqua-Chem Inc. Gas Appliance Manufacturers Association GW Technical Services Inc. Prospective Technology, Inc. Lenan Corporation A.O. Smith Water Products Heat Wise Brookhaven National Laboratory Cleaver-Broo ks Clean Burn Inc. Gas Appliance Manufacturers Association R. W. Beckett Power Flame Inc. UL - STP 296 Project Manager UL - STP 296 Chair UL UL Staff Tim Corder Diana Pappas Jordan Jim OHalloran Not in attendance Copyright O 2005 Underwriters Laboratories Inc. Copyright Underwriters Laboratories Inc. Provided by IHS under license with ULLicensee=Defense Contract Mgmt Command/5935922100 Not for R