Summary of Requirements s10

October 19, 2005

SUMMARY OF REQUIREMENTS

The following is a brief summary of the new and revised paragraphs in the Standard for Household Cooking Gas Appliances, ANSI Z21.1a-2003 and ANSI Z21.1b-2003, 27th Edition, which have a future Effective Date of August 1, 2006 and the action that may be required to determine compliance.

Paragraphs General Subject and Comment 1.1.4 Summary: Clarifies the original intent of the standard regarding dual fuel appliances, and removes limitation of gas-only appliances to 120 VAC maximum.

Action: None required since revised requirement is more permissive. 1.7 Summary: Limits the temperature of Series 300 CSST used as part of a manifold assembly to 900 F (482 C) and requires that it comply with the Tubing Structure, Bending Test, and Burst Test requirements specified in the American National Standard/CSA Standard for Connectors for Gas Appliances, Z21.24-CSA 6.10.

Action: Determine if Listed models employ Series 300 CSST as part of their manifold assembly. If yes, testing is required (Wall, Floor and Enclosure Temperatures; Tubing Structure; Bending; and Burst Tests) unless compliance can be verified through previous test data and third party certification of the CSST connectors. 1.16.2 Summary: References technology currently employed for automatic ignition systems. Relocates coverage for proved igniter systems.

Action: None required since requirement was clarified only and did not change. 1.23.3 Summary: Deleted requirement that prohibited vent openings and flue deflectors located on a front vertical surface below the 36 inch (914 mm) level. New requirements covering such construction are described in paragraphs 1.23.8, 1.29.14 and 2.4.1.

Action: None required since this is an expansion of allowable construction options. Existing Listings remain compliant without the need for review or testing. 1.23.8 Summary: New requirement for appliances with front flue discharge below 36 inch level, in the event a blower motor becomes inoperative when used on a built-in oven having provision for front flue discharge of flue products below the 36 inch (914 mm) level, the appliance design shall comply with 2.18 (Evaluation of Burn Hazard Potential of Exterior Surfaces) and 2.25 (Oven Flue Discharge Temperatures).

Action: None required. This is a new requirement to address a previously prohibited construction. The requirement is not applicable to existing Listed Models. Page 2 of 5 August 1, 2005

Paragraphs General Subject and Comment 1.24 Summary: Requirements for fan and limit controls have been added. Action: Determine if existing Listed Models employ fan and limit controls, and if so, verify compliance with these requirements. 1.26.5 Summary: Removes a provision for connection of a product intended for connection to a 240-volt electrical supply (dual fuel appliances) by directly referring to such requirements in the Standard for Household Electric Ranges, ANSI/UL 858 only.

Action: Determine if products covered are for connection to a 240 VAC electrical supply, and if so, confirm that the electrical supply connection of 240 VAC units comply with UL 858, Household Electric Ranges. 1.29.14 Summary: Requires a marking for a built-in oven with provision for front discharge of flue gases that does not comply with the Oven Flue Discharge Temperature Test. Corrects the metric equivalent of the 36 inch level.

Action: None required. This is a new requirement to address a previously prohibited construction. The requirement is not applicable to existing Listed Models. 2.4.1 Summary: Requires that during the Combustion Test all cracks related to the installation of a built-in unit be sealed. Identifies the method of the Combustion Test for an oven or enclosed broiler in a built-in oven provided with front flue discharge of fan assisted flue products below the 36 inch level.

Action: For built-in (i.e. NOT floor supported) units only, determine if the construction of the appliance employs any openings not considered ‘designed air-openings’, and if so verify that the openings were sealed for combustion testing. If it cannot be verified, consider the need for re-testing. Note that paragraph 2.1.6 and 2.1.7 of 1996 version already contained a requirement that “all joints of the cabinet shall be sealed” therefore no review of the test enclosure is needed.

No action is required for new requirement 2.4.1 (l) since this is a new requirement to address a previously prohibited construction. The requirement is not applicable to existing Listed Models. 2.5 Summary: Includes in the scope of the Burner and Pilot Operating Characteristics Test top burners designed to operate with a wok ring provided by the range manufacturer and/or as a wok burner as recommended by the range manufacturer.

Action: Determine if burners are wok burners or if appliance is provided with wok ring, if so verify that tests were conducted with wok utensil as specified. Consider the need for re-testing if test data showing compliance is not available. 2.6 Summary: Includes in the scope of the Top Surface Cooking Sections Burner Lighters Test top burners designed to operate with a wok ring provided by the range manufacturer and/or as a wok burner as recommended by the range manufacturer.

Action: Determine if burners are wok burners or if appliance is provided with wok ring, if so verify that tests were conducted with wok utensil as specified. Consider the need for re-testing if test data showing compliance is not available. Page 3 of 5 August 1, 2005

Paragraphs General Subject and Comment 2.12 Summary: Oven Heating Capacity test method was revised to require five parallel-connected thermocouples be used in several specific locations in the oven instead of one single thermocouple at oven center.

Action: Re-conduct the Oven Heating Capacity test on all existing Listed gas- fired oven sections following the new method. 2.17.1, 2.17.2, 2.17.3 Summary: Includes wok burners in the scope of each part of the Evaluation of Clothing Ignition Potential Test.

Action: Determine if burners are wok burners or if appliance is provided with wok ring, if so verify that tests were conducted with wok utensil as specified. Consider the need for re-testing if test data showing compliance is not available. 2.18.1 Summary: Increases the oven thermostat set point during the Evaluation of Burn Hazard Potential of Exterior Surfaces Test from 400 ± 5°F (204.5 ± 3°C) to 475 ± 5°F (246± 3°C).

Action: Re-Conduct the Burn Hazard Potential of Exterior Surfaces Test on all existing Listed gas-fired oven sections. Note that pyrolytic self-cleaning ovens will be exempt from the retest. 2.19b, Table XIV Summary: Includes in the scope of the Temperatures of Handles and Knobs Test top burners designed to operate with a wok ring provided by the range manufacturer and/or as a wok burner as recommended by the range manufacturer. Notes d and e of Table XIV editorially revised.

Action: Determine if burners are wok burners or if appliance is provided with wok ring, if so verify that tests were conducted with wok utensil as specified. Consider the need for re-testing if test data showing compliance is not available. 2.25, Figure 18 Summary: A new Oven Flue Discharge Temperature Test applies to a built-in oven with provision for front discharge of flue gases below the 36 inch (914 mm) level.

Action: None required. This is a new requirement to address a previously prohibited construction. The requirement is not applicable to existing Listed Models. Table X Summary: Revised to show “resultant” manifold pressure as a result of the “approximate” increase to obtain the required 12% and 9% increase in input rate for Test Conditions 3a and 3b in paragraph 2.3.3.

Action: None required. This is a clarification and is not a change in test method, existing Listings are still compliant without the need for review.

The following is a brief summary of the new and revised paragraphs in the Standard for Household Cooking Gas Appliances, ANSI Z21.1-2005, 28th Edition, which have a future Effective Date of August 1, 2006 and the action that may be required to determine compliance.

Paragraphs General Subject and Comment 1.5.1c Summary: Adds an exception to subparagraph “c” to state that glass covering the front surface of a control panel, the front or an exposed bottom surface of a background, and constituting a part of the electrical enclosure can only be utilized for the support of an electrical component containing low voltage. Action: None required since revised requirement is more permissive. Paragraphs General Subject and Comment Page 4 of 5 August 1, 2005

1.13.2 Summary: Increases the maximum continuous pilot rating for oven or broiler burner pilots from 175 Btu per hour (51 W) to 250 Btu per hour (73 W).

Action: None required since revised requirement is more permissive. 1.16.2c Summary: Includes requirements for proved igniter systems. Action: None requires since updated to reflect technology currently being used for automatic gas ignition systems. 1.28.8 Summary: Requires the operating instructions include a WARNING stating that this appliance is not to be used as a space heater. The text shall be in a box and preceded by the warning symbol “!” in a triangle with the following: “WARNING NEVER use this appliance as a space heater to heat or warm the room. Doing so may result in carbon monoxide poisoning and overheating of the oven.”

Action: Obtain confirmation from applicant (copy of current instruction manual) of compliance with updated requirements. 1.28.16 Summary: Requires the operating instructions for the appliance include a warning to the user of the hazards regarding the use of aluminum foil in ovens during oven operation. The instructions shall state that this instruction is based on safety considerations. The text shall be in a box and preceded by the warning symbol “!” in a triangle with the following: “WARNING NEVER cover any slots, holes or passages in the oven bottom or cover an entire rack with materials such as aluminum foil. Doing so blocks airflow through the oven and may cause carbon monoxide poisoning. Aluminum foil linings may also trap heat, causing a fire hazard.”

Action: Obtain confirmation from applicant (copy of current instruction manual) of compliance with updated requirements.

SUMMARY OF OTHER REVISIONS

The items below are not a part of this review, but are only intended to advise all concerned of other revisions made to this standard.

Paragraphs General Subject and Comment Section 2.28 Permits compliance of adhesive marking labels with the Standard for Adhesive Labels, CSA C22.2 No. 0.15 or the Standard for Marking and Labeling Systems, UL 969 as an alternative means of complying with Marking Material Adhesion and Legibility requirements testing. Part IV, Definitions Add definitions for “Igniter Failure Response Time,” “Ignition Activation Period,” and “Wok Burner.”

Transfer of “Dual Fuel” Household Ranges to ( LCCZ/LCCZ7 ) Category

At the present time, dual fuel products - products using a combination of gas and electric for cooking - are Listed in the Ranges, Household Electric (KRMX/KRMX7) category. The Guide Information Pages for these categories states that the standards used for the evaluation of these products are UL 858, “Household Electric Ranges” or c, “Household Cooking Ranges”. Dual fuel products have also been investigated according to the requirements of Standard for Household Cooking Gas Appliances, ANSI Z21.1.

These products are now being covered under UL’s Cooking Appliances, Gas Fired, Household (LCCZ/LCCZ) category. The Guide Information Pages for this category states that the standards used for the evaluation of these products are UL 858, ANSI Z21.1 and CSA C22.2 No. 61, as applicable. Gas- Page 5 of 5 August 1, 2005 fired cooking appliances that also use electrical energy for cooking are also investigated to UL 858, "Household Electric Ranges," per a reference in ANSI Z21.1.

Products currently under the Ranges, Household Electric (KRMX/KRMX7) category will need to be evaluated to the latest editions of these standards and all addenda prior to being transferred into the (LCCZ/LCCZ7) category. UL has established an effective date of August 1, 2006 by which time all products will be transferred. Listings of those products that are not transferred to the new category will be withdrawn.

New UL Gas-Fired Listing Mark

In response to input from manufacturers, consumers, and regulatory authorities, UL has developed a Listing Mark specific to gas-fired products. Effective with the completion of this industry review, gas-fired only and gas-fired/electric products certified to the latest editions of the standards noted above and all addenda will be eligible to bear the new UL Gas-Fired Listing Mark. For more specific information on this mark please see http://www.ul.com/gas2/overview.html .

If you have a supply of UL Listing Marks, you will be permitted to continue to use existing inventory of these UL Marks until the established effective date. Upon inventory depletion and determination of compliance prior to the effective date, the new UL Gas-Fired Listing Mark should be used.

These changes will result in your products being widely accepted in the market place by customers and regulators as complying with nationally recognized safety standards for gas-fired equipment.