Subject 296 (295, 296A, 307A, 307B, 726, 727, 729, 730, 731, 732, 733, 795, 896, 2096, 2106, 2790)

Bulletin Dated: February 20, 2012

SUMMARY OF TOPICS

The following topics were discussed at the meeting of the Standards Technical Panel for Furnaces and Heating Equipment:

1. Valve Proving Systems

2. Zero Governor Systems

3. Combustion Air Control Methods/Components

4. Biodiesel Fuel Blends

5. Functional Safety

6. Removal of Burner Requirements from UL 795 and status of STP 296

7. STP 296 Technical Outreach

8. Revision to UL 795 and Other Operational Standards - Testing for Increased Input for VFDs

9. Endurance Testing Requirements in UL 295 and UL 296

Subject 724 (295, 296, 296A, 307A, 307B, 726, 727, 729, 730, 731, 732, 733, 795, 896, 2096, 2106, 2790)

Bulletin Dated: August 30, 2011

Summary of Topics

This bulletin announces the availability of the Outline of Investigation for Indirect Fired, Oil-Burning Commercial Cooking Appliances, Subject 724

Subject 296 (295, 296A, 307A, 307B, 726, 727, 729, 730, 731, 732, 733, 795,896, 2096,2106)

Bulletin Dated: February 27, 2009

SUMMARY OF TOPICS

The following topics were discussed at the meeting of the Standards Technical Panel for Furnaces and Heating Equipment:

1. International Harmonization

2. Updated requirements for controls

3. Combined requirements of ANSI/UL 372, ANSI Z21.20, CSA C22.2 No. 199

4. Specification of biodiesel and impact to oil-fired burners and appliances

5. Non-metallic venting systems and components

6. Proof of closure requirements for commercial oil-fired heating appliances

7. Removal of burner requirements from UL 795, allowing reference to ANSI/UL 295

8. Exceptions for required manual (test) valve downstream of electrical safety shutoff valves for particular constructions/designs of combustion systems, such as premix burner systems

9. Criteria for motor protection with Variable Frequency Drives (VFDs) used in combustion systems

10. General evaluation of VFDs used in combustion systems

11. Criteria for PLC evaluation within combustion systems

12. Markings on burner for timings (former Group designations of UL 372)

13. Recycling of burners over 2,500,000 btu input

14. Flexible nonmetallic cable

Subject 2576 (726, 727, 729, 730, 731, 732, 733)

Bulletin Dated: February 6, 2008

Summary of Topics

This bulletin announces the availability of the First Issue of the Outline of Investigation for Refractory Combustion Chamber Liners, SU 2576