81 FR 36288 - Notice of Petition for Waiver of Raypak Inc. From the Department of Energy Commercial Water Heater Test Procedure
DEPARTMENT OF ENERGY
Office of Energy Efficiency and Renewable Energy Federal Register Volume 81, Issue 108 (June 6, 2016)
Office of Energy Efficiency and Renewable Energy
Federal Register Volume 81, Issue 108 (June 6, 2016)
| Page Range | 36288-36295 | |
| FR Document | 2016-13252 |
[Federal Register Volume 81, Number 108 (Monday, June 6, 2016)] [Notices] [Pages 36288-36295] From the Federal Register Online [www.thefederalregister.org] [FR Doc No: 2016-13252] ----------------------------------------------------------------------- DEPARTMENT OF ENERGY Office of Energy Efficiency and Renewable Energy [Case No. WH-004] Notice of Petition for Waiver of Raypak Inc. From the Department of Energy Commercial Water Heater Test Procedure AGENCY: Office of Energy Efficiency and Renewable Energy, Department of Energy. ACTION: Notice of petition for waiver and request for public comments. ----------------------------------------------------------------------- SUMMARY: This notice announces receipt of and publishes a petition for waiver from Raypak Inc. (Raypak) seeking an exemption from specified provisions applicable to standby loss of the U.S. Department of Energy (DOE) test procedure for commercial water heating equipment. The waiver request pertains to Raypak's specified models of commercial instantaneous water heaters containing 10 gallons or more of water. In its petition, Raypak contends that its specified water heater models that employ tube-type heat exchangers and are designed to be flow activated cannot be accurately tested using the currently applicable DOE test procedure. Consequently, Raypak seeks to use an alternate test procedure to address certain issues involved in testing the specific basic models identified in its petition. DOE solicits comments, data, and information concerning Raypak's petition and its suggested alternate test procedure. DATES: DOE will accept comments, data, and information with respect to the Raypak Petition until July 6, 2016. ADDRESSES: You may submit comments, identified by case number WH-004, by any of the following methods:Federal eRulemaking Portal: http://www.regulations.gov. Follow the instructions for submitting comments. Email: [email protected]. Include the case number [Case No. WH-004] in the subject line of the message. Submit electronic comments in WordPerfect, Microsoft Word, PDF, or ASCII file format, and avoid the use of special characters or any form of encryption. Postal Mail: Ms. Brenda Edwards, U.S. Department of Energy, Building Technologies Office, Mailstop EE-5B, Petition for Waiver Case No. WH-004, 1000 Independence Avenue SW., Washington, DC 20585-0121. Telephone: (202) 586-2945. If possible, please submit all items on a compact disc (CD), in which case it is not necessary to include printed copies. [[Page 36289]] Hand Delivery/Courier: Ms. Brenda Edwards, U.S. Department of Energy, Building Technologies Office, 950 L'Enfant Plaza SW., Suite 600, Washington, DC 20024. If possible, please submit all items on a CD, in which case it is not necessary to include printed copies. Docket: The docket, which includes Federal Register notices, comments, and other supporting documents/materials, is available for review at www.regulations.gov. All documents in the docket are listed in the www.regulations.gov index. However, some documents listed in the index, such as those containing information that is exempt from public disclosure, may not be publicly available. For further information on how to submit a comment, or review other public comments and the docket, contact Ms. Brenda Edwards at (202) 586-2945 or by email: [email protected]. FOR FURTHER INFORMATION CONTACT: Mr. Bryan Berringer, U.S. Department of Energy, Building Technologies Office, Mail Stop EE-5B, 1000 Independence Avenue SW., Washington, DC 20585-0121. Telephone: (202) 586-0371. Email: [email protected]. Mr. Eric Stas, U.S. Department of Energy, Office of the General Counsel, GC-33, 1000 Independence Avenue SW., Washington, DC 20585- 0121. Telephone: (202) 586-9507. Email: [email protected]. For information on how to submit or review public comments, contact Ms. Brenda Edwards, U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy, Building Technologies Office, Mailstop EE-5B, 1000 Independence Avenue SW., Washington, DC 20585-0121. Telephone: (202) 586-2945. Email: [email protected]. SUPPLEMENTARY INFORMATION: I. Background and Authority Title III, Part C \1\ of the Energy Policy and Conservation Act of 1975 (EPCA), Pub. L. 94-163 (42 U.S.C. 6311-6317, as codified), added by Pub. L. 95-619, established the Energy Conservation Program for Certain Industrial Equipment, which includes commercial water heaters, the focus of this notice.\2\ Part C specifically includes definitions (42 U.S.C. 6311), energy conservation standards (42 U.S.C 6313), test procedures (42 U.S.C. 6314), labeling provisions (42 U.S.C. 6315), and the authority to require information and reports from manufacturers. (42 U.S.C. 6316) With respect to test procedures, Part C authorizes the Secretary of Energy (the Secretary) to prescribe test procedures that are reasonably designed to produce results that measure energy efficiency, energy use, and estimated annual operating costs during a representative average-use cycle, and that are not unduly burdensome to conduct. (42 U.S.C. 6314(a)(2)) EPCA also directs DOE to consider amending the existing test procedure for each type of equipment listed each time the industry test procedure is amended for such equipment. (42 U.S.C. 6314(a)(4)) The test procedure for commercial water heaters is contained in the Code of Federal Regulations (CFR) at 10 CFR part 431, subpart G. --------------------------------------------------------------------------- \1\ For editorial reasons, upon codification in the U.S. Code, Part C was re-designated Part A-1. \2\ All references to EPCA in this document refer to the statute as amended through the Energy Efficiency Improvement Act of 2015 (EEIA 2015), Pub. L. 114-11 (April 30, 2015). --------------------------------------------------------------------------- DOE's regulations set forth at 10 CFR 431.401 contain provisions that permit a person to seek a waiver from the test procedure requirements for covered equipment if at least one of the following conditions is met: (1) The basic model contains one or more design characteristics that prevent testing according to the prescribed test procedures; or (2) the prescribed test procedures may evaluate the basic model in a manner so unrepresentative of its true energy consumption as to provide materially inaccurate comparative data. 10 CFR 431.401(a)(1). A petitioner must include in its petition any alternate test procedures known to the petitioner to evaluate the basic model in a manner representative of its energy consumption. 10 CFR 431.401(b)(1)(iii). DOE may grant a waiver subject to conditions, including adherence to alternate test procedures. 10 CFR 431.401(f)(2). As soon as practicable after the granting of any waiver, DOE will publish in the Federal Register a notice of proposed rulemaking to amend its regulations so as to eliminate any need for the continuation of such waiver. As soon thereafter as practicable, DOE will publish in the Federal Register a final rule. 10 CFR 431.401(l). II. Petition for Waiver of Test Procedure On May 5, 2015, Raypak filed a petition for waiver from the DOE test procedure at 10 CFR 431.106 to measure standby loss of commercial water heating equipment. This petition addresses Raypak's specified models of commercial instantaneous water heaters containing 10 gallons or more of water. The current DOE efficiency test procedure for commercial water heaters incorporates by reference the relevant industry test standard for measuring thermal efficiency and standby loss, as specified in American National Standards Institute (ANSI) ANSI Z21.10.3-2011, Gas-Fired Water Heaters, Volume III, Storage Water Heaters, With Input Ratings Above 75,000 Btu Per Hour, Circulating and Instantaneous. In its petition, Raypak contends that its identified basic models rely on flow of water through the heater to activate the burner, but because the current DOE test procedure does not take into account such units, it does not provide a proper representation of the standby loss of these models. The current standby loss test procedure is designed to test tank-type water heaters which are thermostatically operated. The models for which Raypak is seeking this test procedure waiver employ tube-type heat exchangers and are designed to be flow activated. To address the apparent shortcomings of ANSI Z21.10.3-2011, Raypak has submitted to DOE an alternate test procedure for measuring the standby loss of tube-type instantaneous water heaters, as addressed in sections E.1 and E.3 of ANSI Z21.10.3-2012, Gas-Fired Water Heaters, Volume III, Storage Water Heaters, With Input Ratings Above 75,000 Btu Per Hour, Circulating and Instantaneous. Raypak believes this alternative provides a representative measure of the standby loss of these models. III. Alternate Test Procedure EPCA requires that manufacturers use DOE test procedures when making representations about the energy consumption and energy consumption costs of products and equipment covered by the statute. (42 U.S.C. 6293(c); 6314(d)) Consistent representations about the energy efficiency of covered products and equipment are important for consumers evaluating products when making purchasing decisions and for manufacturers to demonstrate compliance with applicable DOE energy conservation standards. Pursuant to its regulations applicable to waivers and interim waivers from applicable test procedures at 10 CFR 431.401, DOE will consider setting an alternate test procedure for Raypak in a subsequent Decision and Order. Raypak has submitted to DOE an alternate test procedure for measuring the standby loss of tube-type instantaneous water heaters as addressed in ANSI Z21.10.3-2012 sections E.1 and E.3. Specifically, Raypak has submitted the following alternate test procedure to accurately represent the standby loss of its [[Page 36290]] commercial instantaneous water heaters containing 10 gallons or more of water: Z21.10.3-2012 Exhibit E Efficiency Test Procedures E.1 Method of Test for Measuring Thermal Efficiency A water heater for installation on combustible floors shall be placed on \3/4\ in (1.9 cm) plywood platform supported by three 2 x 4 runners. If the water heater is for installation on noncombustible floors, suitable noncombustible material shall be placed on the platform. When the use of the platform for a large water heater is not practical, the water heater may be placed on any suitable flooring. A wall mounted water heater shall be mounted to a simulated wall section. Placement in the test room shall be in an area protected from drafts. Inlet and outlet piping shall be immediately turned vertically downward from the connections on a tank-type water heater so as to form heat traps. Any factory supplied heat traps shall be installed per the installation instructions. Thermocouples for measuring inlet and outlet water temperatures shall be installed before the inlet heat trap piping and after the outlet heat trap piping. Water-tube water heaters shall be installed as shown in Figure 3, Arrangement for Testing Water-tube Type Instantaneous and Circulating Water Heaters. a. Piping Insulation Insulate the water piping, including heat traps, for a length of 4 ft (1.22 m) from the connection at the appliance with material having a thermal resistance (R) value of not less than 4 [F[middot]ft [middot]hr/Btu (0.7 K[middot]m/W)]. Care should be taken so the insulation does not contact any appliance surface except at the location where the pipe connections penetrate the appliance jacket. b. Temperature and Pressure Relief Valve Insulation If the manufacturer has not provided a temperature and pressure relief valve, one shall be installed and insulated as specified above. c. Vent Requirements 1. Appliance Equipped With Draft Hoods All tests shall be conducted with the natural draft established by the following vent pipe arrangements: A vertically discharging vent connection shall have attached to and vertically above it, 5 ft (1.52 m) of vent pipe the same size as the outlet. If the vent does not discharge vertically, a suitable elbow shall be installed first. 2. Direct Vent Appliances and Mechanically Vented The appliance shall be installed with the venting arrangement specified in the manufacturer's instructions. The water heater shall be installed with the manufacturer's specified minimum venting length venting arrangement. d. Water Supply During conduct of this test, the temperature of the supply water shall be maintained at 70 2[emsp14][deg]F (21 1 [deg]C). The pressure of the water supply shall be maintained between 40 psi (275.8 kPa) and the maximum pressure specified by the manufacturer for the appliance under test. The accuracy of the pressure measuring devices shall be 1.0 psi (6.9 kPa). For a water- tube water heater, the inlet water temperature shall be maintained at the supply water temperature or as specified by the manufacturer (see 2.1.8). A tank-type water heater shall be isolated by use of a shutoff valve in the supply line with an expansion tank installed in the supply line downstream of the shutoff valve. There shall be no shutoff means between the expansion tank and the appliance inlet. e. Gas Supply The gas rate shall be adjusted as specified in 2.3.3. The outlet pressure of the gas appliance pressure regulator shall be within 10 percent of that recommended by the manufacturer. The higher heating value of the gas burned shall be obtained. f. Installation of Temperature Sensing Means For tank-type water heaters, six (6) temperature sensing means shall be installed inside the storage tank on the vertical center of each of 6 nonoverlapping sections of approximately equal volume from the top to the bottom of the tank. Each temperature sensing means is to be located as far as possible from any heat source or other irregularity, anodic protective device, or water tank or flue wall. The anodic protective device may be removed in order to install the temperature sensing means and all testing may be carried out with the device removed. If the temperature sensing means cannot be installed as specified above, placement of the temperature sensing means shall be made at the discretion of the testing agency so comparable water temperature measurements may be obtained. A temperature sensing means, shielded against direct radiation and positioned at the vertical midpoint of the water heater at a perpendicular distance of approximately 24 in (610 mm) from the surface of the jacket, shall be installed in the test room. g. Setting Tank Thermostat Before starting testing of a tank-type water heater, the setting of the thermostat shall first be obtained by starting with the water in the system at 70 2[emsp14][deg]F (21 1 [deg]C) and noting the maximum mean temperature of the water after the thermostat reduces the gas supply to a minimum. The temperature shall be 140 5[emsp14][deg]F (60 3 [deg]C). h. Energy Consumption Instrumentation shall be installed which determines, within 1 percent: 1. The quantity and rate of gas consumed. 2. The quantity of electricity consumed by factory supplied water heater components, and of the test loop recirculating pump, if used. i. Room Ambient Temperature The ambient air temperature of the test room shall be maintained at 75 10[emsp14][deg]F (24 5.5 [deg]C), as measured by the test room temperature sensing means described in ``-f'' above. The ambient air temperatures shall be measured at 15 minute intervals during conduct of this test. The room temperature shall not vary more than 7.0[emsp14][deg]F ( 4 [deg]C) from the average during the test, temperature readings being taken by means of a recording thermometer at 15 minute intervals and averaged at the end of the test. j. Efficiency Measurement The outlet water temperature shall be adjusted by varying the rate of flow until temperature is constant at 70 2[emsp14][deg]F (21 1 [deg]C) above the supply temperature. After the outlet temperature has become constant, as indicated by no variation in excess of 2[emsp14][deg]F (1 [deg]C) over a 3 minute period, the outlet water shall be diverted from the waste line to a weighing container. A scale with an error no greater than 1 percent of the total draw shall be used. Water shall be allowed to flow into the weighing container for exactly 30 minutes. The gas consumption and electrical power consumption of factory supplied heater components and of the test loop-recirculating pump, if used, shall be measured for the 30 minute period. At this time, the outlet water shall be diverted back into the waste [[Page 36291]] line, the meter readings noted, and the weight of heater water recorded. Throughout the period of test, supply and outlet water temperatures shall be recorded every minute. The temperature, pressure and heating value of the gas metered and barometric pressure shall be obtained. A water meter with an error no greater than 1 percent of the total draw may be used instead of the scale and weighing container. Thermal efficiency, Et, shall be computed by use of the following formula: E t = (KW ([thetas]2 -[thetas]1 )/[(CF x Q x H) + Ec ]) x 100 Where: K = 1.004 Btu per pound mass degree F (4184 J/kg [deg]C), nominal specific heat of water at 105 [deg]F; W = total weight of water heated, lbs. (kg); [thetas]1 = average temperature of supply water, [deg]F ([deg]C); [thetas]2 = average temperature of outlet water, [deg]F ([deg]C); Q = total gas consumed as metered, cu. ft. (m\3\); Cs = correction applied to the heating value H, when it is metered at temperature and/or pressure conditions other than the standard conditions. At which the heating value of gas is specified [normally 30 inches mercury column (101.3 kPa) and 60 [deg]F (15.5 [deg]C)]; H = total heating value of gas, Btu per cu. ft. (MJ/m3 ); and Ec = electrical consumption of the water heater and, when used, the test setup recirculating pump, specified in Btu (kJ). Standby Loss for tank type water heaters shall be determined using Appendix E.2 Standby Loss for tube type water heaters that contain 10 or more gallons within the water heater, as determined under 5.27, shall be determined using Appendix E.3 E.3 Method of Test For Measuring Standby Loss for Tube Type Instantaneous Water Heaters With 10 or Greater Gallons of Storage The appliance shall be installed as specified in G.1, Method of Test for Measuring Thermal Efficiency. This test may be conducted immediately following the thermal efficiency test. In this case, start the test after the main burner(s) has shut down and, if applicable, the water pump has shut down. Otherwise, the water heater shall be put into operation under the same test conditions specified in G.1, and the outlet water temperature shall be adjusted by varying the rate of flow until temperature is constant at 702[emsp14][deg]F (21 1 [deg]C) above the supply temperature. After the outlet temperatures becomes constant, as indicated by no variation in excess of 2[emsp14][deg]F (1 [deg]C) over a 3 minute period, shut down the main burner(s) and, if applicable, wait for the water pump to shut down, and then start the test. At the start of the test, record the time, ambient temperature, outlet water temperature, supply water temperature, and begin measuring the fuel and electric consumption. During the first hour, outlet water temperature, supply water temperature and the ambient air temperature shall be measured at the end of each 5 minute interval. For the remainder of the test, these measurements shall be made at the end of every 15 minute interval. The duration of this test shall be 24 hours. If the main burner is firing at 24 hours, continue the test until the main burner and the water pump, if applicable, have shut down. Immediately after the conclusion of the test, record the total fuel flow and electrical energy consumption, the final ambient air temperature, and the final outlet water temperature. Calculate the average of the ambient air temperatures and the supply water temperatures taken at the end of each time interval, including the initial and final values. The average hourly standby loss, S, rounded to the nearest Btu per hour, shall be determined by the formula: S = [(Cs(Qs)(H) + Ec)/t]-[([Delta]T4)/([Delta]T3)(t)Et] Where: Cs = correction applied to the heating value of a gas H, when it is metered at temperature and/or pressure conditions other than the standard conditions for which the value of H is based; H = higher heating value of gas, Btu per cu. ft. (MJ/m3); Qs = total fuel flow as metered, cu. ft. (m3); [Delta]T3 = difference between the outlet temperature and the average value of the ambient air temperature, [deg]F ([deg]C); [Delta]T4 = difference between the average supply water temperature and the outlet temperature, [deg]F ([deg]C); t = duration of test, hrs.; Ec = electrical energy consumption expressed in Btu (kJ); and Et = thermal efficiency as determined under G1, Method of Test for Measuring Thermal Efficiency If the main burner(s) does not cycle on during this test, the hourly average standby loss calculation simplifies to: S = {(K(Va)([Delta]T4)/Et) + Ec{time} /t For water heaters that will not initiate or cause actions that will initiate burner operation, the following simplified procedure may be used to measure the hourly standby loss. This test may be conducted immediately following the thermal efficiency test. In this case, start the test after the main burner(s) has shut down and, if applicable, the water pump has shut down. Otherwise provide the electrical connection as specified in G.1, Method of Test for Measuring Thermal Efficiency, and start the test. At the start of the test, record the time and begin measuring the electric consumption for one hour. Record the duration of the test and the total electrical consumption during the test. The average hourly standby loss, S, rounded to the nearest Btu per hour, shall be determined by the formula: S = [(([Delta]T5 k Va/Et)/24) +Ec] Where: [Delta]T 5 = 70 [deg]F (38.9 [deg]C), difference between the supply and outlet water temperatures; k= 8.25 Btu/gallon [deg]F (4147.6331 J/l [deg]C), the nominal specific heat of water; Va = water contained in the water heater expressed in gallons (L), as determined under 5.27; Ec = electrical energy consumption expressed in Btu (kJ); and Et = thermal efficiency as determined under G1, Method of Test for Measuring Thermal Efficiency. The following basic models are included in Raypak's petition: XTherm Model WH7-1005* XTherm Model WH7-1505* XTherm Model WH7-2005* XTherm Model WH7-2505* XTherm Model WH7-3005* XTherm Model WH7-3505* XTherm Model WH7-4005* MVB Model WH7-2503* MVB Model WH7-3003* MVB Model WH7-3503* MVB Model WH7-4003* IV. Summary and Request for Comments Through this notice, DOE announces receipt of and is publishing Raypak's petition for waiver from the DOE test procedure for commercial water heaters for its above-referenced commercial instantaneous water heater models, which contain 10 gallons or more of water. The petition contains no confidential information. The petition includes a suggested alternate test procedure to determine the thermal efficiency and standby loss of Raypak's specified basic models of commercial instantaneous water heaters containing 10 gallons or more of water. DOE is considering including this alternate test procedure in its subsequent Decision and Order. DOE solicits comments from interested parties on all aspects of the petition, including the suggested alternate test procedure and calculation methodology. Pursuant to 10 CFR 431.401(d), any person submitting written comments to DOE must also [[Page 36292]] send a copy of such comments to the petitioner. The contact information for the petitioner is: Mr. Robert Glass, Sr. Staff Engineer, Raypak Inc., 2151 Eastman Avenue, Oxnard, CA 93030. All submissions received must include the agency name and case number for this proceeding. Submit electronic comments in WordPerfect, Microsoft Word, Portable Document Format (PDF), or text (American Standard Code for Information Interchange (ASCII)) file format and avoid the use of special characters or any form of encryption. Wherever possible, include the electronic signature of the author. DOE does not accept telefacsimiles (faxes). Pursuant to 10 CFR 1004.11, any person submitting information that he or she believes to be confidential and exempt by law from public disclosure should submit two copies: one copy of the document marked ``confidential'' with all of the information believed to be confidential included, and one copy of the document marked ``non- confidential'' with all of the information believed to be confidential deleted. DOE will make its own determination about the confidential status of the information and treat it according to its determination. Issued in Washington, DC, on May 31, 2016. Kathleen B. Hogan, Deputy Assistant Secretary for Energy Efficiency, Energy Efficiency and Renewable Energy. Raypak, A Rheem Company May 5, 2015 U.S. Department of Energy, Building Technologies Program, MS EE-2J, Test Procedure Waiver, 1000 Independence Avenue, SW., Washington, DC 20585-0121. Re: Waiver for Test Procedure for Commercial Water Heating Equipment To Whom It May Concern: Pursuant to the provisions of 10 CFR 431.401, Raypak Inc. is hereby applying for a waiver of the standby loss test procedure of 10 CFR .431.106 for the following basic model(s) of commercial instantaneous water heaters containing 10 gallons or more of water: ------------------------------------------------------------------------ Water capacity Model (gal.) ------------------------------------------------------------------------ XTherm Model WH7-1005*.................................. 11.8 XTherm Model WH7-1505*.................................. 12.4 XTherm Model WH7-2005*.................................. 15.6 XTherm Model WH7-2505*.................................. 25.0 XTherm Model WH7-3005*.................................. 26.0 XTherm Model WH7-3505*.................................. 26.9 XTherm Model WH7-4005*.................................. 33.8 MVB Model WH7-2503*..................................... 10.9 MVB Model WH7-3003*..................................... 11.6 MVB Model WH7-3503*..................................... 12.2 MVB Model WH7-4003*..................................... 12.8 ------------------------------------------------------------------------ The current Department of Energy efficiency test procedure for commercial water heaters references the relevant test procedures for measuring thermal efficiency and standby loss specified in the standard, ANSI Z21.10.3-2011. The identified basic models rely on flow of water through the heater to activate the burner. As will be explained below, the current test procedure does not provide a proper representation of the standby loss of these models. The current standby loss test procedure is included as Attachment A. This procedure is designed to test tank-type water heaters which are thermostatically operated. The basic steps of the procedure are to heat the water within the water heater, turn off the burner or element and then measure all the energy consumption that occurs while the water heater is ``standing by'' for approximately 24 hours with no water being withdrawn from it. The key measurement of the test procedure is the energy consumed by the burner or heating element when the thermostat senses that the water in the tank has cooled down to the point where it needs to be reheated. The current test does not address water heaters that have no means to activate the burner or heating element if no heated water is being drawn from the unit, i.e. the standby condition. The models for which Raypak Inc. is seeking this test procedure waiver employ tube type heat exchangers and are designed to be flow activated. That is, the burner does not come on until water flow through the unit is sensed. Under the current standby loss test procedure, the burner on these models will not fire at any time during the test and the resulting standby loss measurement would be nearly zero. That measurement is not representative of the standby loss characteristics of these models. Raypak Inc. believes that the current test procedure evaluates the standby loss of the identified basic models in a manner so unrepresentative of the true energy consumption as to provide materially inaccurate comparative data. The manufacturers of other basic models marketed in the United States known to Raypak Inc. to incorporate similar design characteristics is included as Attachment B. An alternative procedure for measuring the standby loss of tube type instantaneous water heater is included as Attachment C. Raypak Inc. believes this alternative provides a representative measure of the standby loss of these models. Raypak Inc. requests that DOE grant it a waiver to use this alternative procedure in lieu of the standby loss procedure specified in the current DOE efficiency test procedures for commercial water heaters. Respectfully submitted, Robert Glass Sr. Staff Engineer Raypak Inc. 2151 Eastman Avenue, Oxnard, CA 93030 (805) 278-5300 FAX (800) 872-9725 www.raypak.com Attachments--Attachment A--Current Standby Loss Test Procedure Attachment B--Other Affected Manufacturers Attachment C--Proposed Alternative Procedure for Measuring the Standby Loss of Tube Type Instantaneous Water Heaters Containing More than 10 Gallons C: Karen Meyers--Rheem Manufacturing Co. Russell Pate--Rheem Manufacturing Co. Attachment A: Current Standby Loss Test Procedure E.2 Method of test for measuring standby loss The appliance shall be installed as specified in E.1, Method of test for measuring thermal efficiency. The gas to the main burner(s) shall be turned on and the appliance put into operation. After the first cutout, allow the water heater to remain in the standby mode until the next cutout. At this time record the time, ambient temperature and begin measuring the fuel and electric consumption. Record the maximum mean tank temperature that occurs after cutout. At the end of the first 15 minute interval and at the end of each subsequent 15 minute interval, the mean tank temperature and the ambient air temperature shall be recorded. The duration of this test shall be until the first cutout that occurs after 24 hours or 48 hours, whichever comes first. Immediately after the conclusion of the test, record the total fuel flow and electrical energy consumption, the final ambient air temperature, and the time duration of the standby loss test (t) in hours rounded to the nearest one hundredth of an hour and the maximum [[Page 36293]] mean tank temperature that occurs after cutout. Calculate the average of the recorded values of the mean tank temperatures and of the ambient air temperatures taken at the end of each time interval, including the initial and final values. Determine the difference ([Delta]T3 ) between these two averages by subtracting the latter from the former, and the differences ([Delta]T4 ) between the final and initial mean tank temperatures by subtracting the latter from the former. The ratio of the average hourly energy consumption to the heat content of the stored water above room temperatures, in percent, rounded to the nearest one hundredth shall be determined by the formula: [GRAPHIC] [TIFF OMITTED] TN06JN16.001 Where Cs = correction applied to the heating value of a gas H, when it metered at temperature and/or pressure conditions other than the standard conditions for which the value of H is based; K = 8.25 Btu per gallon [deg]F (4147.6331 J/I [deg]C), the nominal specific heat of water; Va = tank capacity expressed in gallons (L), as determined under 5.26, Capacities of storage vessels; H = higher heating value of gas, Btu per cu. Ft. (MJ/m\3\); Qs = total fuel flow as metered, cu. Ft. (m\3\); [Delta]T3 = difference between the average value of the mean tank temperature and the average value of the ambient air temperature, [deg]F ([deg]C); [Delta]T4 = difference between the final and initial mean tank temperature, [deg]F ([deg]C); t = duration of test, hrs.; Ec = electrical energy consumption expressed in Btu (kJ); and Et = thermal efficiency as determined under E.1, Method of test for measuring thermal efficiency. Attachment B: Manufacturers of Commercial Tube Type Water Heaters containing 10 gallons or more A.O. Smith Corporation, 11270 W Park Place, P.O. Box 245008, Milwaukee, WI 53224-3623 HTP, Inc., 120 Braley Rd., P.O. Box 429, East Freetown, MA 02717- 1125 Laars Heating Systems Company, 20 Industrial Way, Rochester, NH 03867-4296 Lochinvar LLC, 300 Maddox Simpson Pkwy., Lebanon, TN 37090-5366 Thermal Solutions Products, LLC, a Subsidiary of Burnham Holdings, P.O. BOX 3244, Lancaster, PA 17604-3244 Attachment C AHRI Recommended Standby Loss Test Procedure For Commercial Tube-Type Instantaneous Water Heaters And Hot Water Supply Boilers That Contain At Least 10 Gallons Of Water Z21.10.3-2012 Exhibit E Efficiency Test Procedures E.1 Method Of Test For Measuring Thermal Efficiency A water heater for installation on combustible floors shall be placed on \3/4\ in (1.9 cm) plywood platform supported by three 2 x 4 runners. If the water heater is for installation on noncombustible floors, suitable noncombustible material shall be placed on the platform. When the use of the platform for a large water heater is not practical, the water heater may be placed on any suitable flooring. A wall mounted water heater shall be mounted to a simulated wall section. Placement in the test room shall be in an area protected from drafts. Inlet and outlet piping shall be immediately turned vertically downward from the connections on a tank-type water heater so as to form heat traps. Any factory supplied heat traps shall be installed per the installation instructions. Thermocouples for measuring inlet and outlet water temperatures shall be installed before the inlet heat trap piping and after the outlet heat trap piping. Water-tube water heaters shall be installed as shown in Figure 3, Arrangement for Testing Water-tube Type Instantaneous and Circulating Water Heaters. a. Piping Insulation Insulate the water piping, including heat traps, for a length of 4 ft (1.22 m) from the connection at the appliance with material having a thermal resistance (R) value of not less than 4 [F[middot]ft [middot]hr/Btu (0.7 K[middot]m/W)]. Care should be taken so the insulation does not contact any appliance surface except at the location where the pipe connections penetrate the appliance jacket. b. Temperature and Pressure Relief Valve Insulation If the manufacturer has not provided a temperature and pressure relief valve, one shall be installed and insulated as specified above. c. Vent Requirements 1. Appliance Equipped With Draft Hoods All tests shall be conducted with the natural draft established by the following vent pipe arrangements: A vertically discharging vent connection shall have attached to and vertically above it, 5 ft (1.52 m) of vent pipe the same size as the outlet. If the vent does not discharge vertically, a suitable elbow shall be installed first. 2. Direct Vent Appliances and Mechanically Vented The appliance shall be installed with the venting arrangement specified in the manufacturer's instructions. The water heater shall be installed with the manufacturer's specified minimum venting length venting arrangement. d. Water Supply During conduct of this test, the temperature of the supply water shall be maintained at 702 [deg]F (21 1 [deg]C). The pressure of the water supply shall be maintained between 40 psi (275.8 kPa) and the maximum pressure specified by the manufacturer for the appliance under test. The accuracy of the pressure measuring devices shall be 1.0 psi (6.9 kPa). For a water-tube water heater, the inlet water temperature shall be maintained at the supply water temperature or as specified by the manufacturer (see 2.1.8). A tank-type water heater shall be isolated by use of a shutoff valve in the supply line with an expansion tank installed in the supply line downstream of the shutoff valve. There shall be no shutoff means between the expansion tank and the appliance inlet. e. Gas Supply The gas rate shall be adjusted as specified in 2.3.3. The outlet pressure of the gas appliance pressure regulator shall be within 10 percent of that recommended by the manufacturer. The higher heating value of the gas burned shall be obtained. f. Installation of Temperature Sensing Means For tank-type water heaters, six (6) temperature sensing means shall be installed inside the storage tank on the vertical center of each of 6 nonoverlapping sections of approximately equal volume from the top to the bottom of the tank. Each temperature sensing means is to be located as far as possible from any heat source or other irregularity, anodic protective device, or water tank or flue wall. The anodic protective device may be removed in order to install the temperature sensing means and all testing may be carried out with the device removed. If the temperature sensing means cannot be installed as specified above, placement of the temperature sensing means shall be made at the discretion of the testing agency so comparable water temperature measurements may be obtained. A temperature sensing means, shielded against direct radiation and positioned at the vertical midpoint of the water heater at a perpendicular distance of approximately 24 in (610 mm) from the surface of the jacket, shall be installed in the test room. [[Page 36294]] g. Setting Tank Thermostat Before starting testing of a tank-type water heater, the setting of the thermostat shall first be obtained by starting with the water in the system at 70 2 [deg]F (21 1 [deg]C) and noting the maximum mean temperature of the water after the thermostat reduces the gas supply to a minimum. The temperature shall be 140 5 [deg]F (60 3 [deg]C). h. Energy Consumption Instrumentation shall be installed which determines, within 1 percent: 1. The quantity and rate of gas consumed. 2. The quantity of electricity consumed by factory supplied water heater components, and of the test loop recirculating pump, if used. i. Room Ambient Temperature The ambient air temperature of the test room shall be maintained at 75 10 [deg]F (24 5.5 [deg]C), as measured by the test room temperature sensing means described in ``- f'' above. The ambient air temperatures shall be measured at 15 minute intervals during conduct of this test. The room temperature shall not vary more than 7.0 [deg]F ( 4[deg]C) from the average during the test, temperature readings being taken by means of a recording thermometer at 15 minute intervals and averaged at the end of the test. j. Efficiency Measurement The outlet water temperature shall be adjusted by varying the rate of flow until temperature is constant at 70 2 [deg]F (21 1 [deg]C) above the supply temperature. After the outlet temperature has become constant, as indicated by no variation in excess of 2 [deg]F (1 [deg]C) over a 3 minute period, the outlet water shall be diverted from the waste line to a weighing container. A scale with an error no greater than 1 percent of the total draw shall be used. Water shall be allowed to flow into the weighing container for exactly 30 minutes. The gas consumption and electrical power consumption of factory supplied heater components and of the test loop-recirculating pump, if used, shall be measured for the 30 minute period. At this time, the outlet water shall be diverted back into the waste line, the meter readings noted, and the weight of heater water recorded. Throughout the period of test, supply and outlet water temperatures shall be recorded every minute. The temperature, pressure and heating value of the gas metered and barometric pressure shall be obtained. A water meter with an error no greater than 1 percent of the total draw may be used instead of the scale and weighing container. Thermal efficiency, E t , shall be computed by use of the following formula: Et = (KW ([thgr]2 - [thgr]1 )/[(CF x Q x H) + Ec ]) x 100 where K = 1.004 Btu per pound mass degree F (4184 J/kg [deg]C), nominal specific heat of water at 105 [deg]F; W = total weight of water heated, lbs. (kg); [thgr]1 = average temperature of supply water, [deg]F ([deg]C); [thgr]2 = average temperature of outlet water, [deg]F ([deg]C); Q = total gas consumed as metered, cu. ft. (m\3\); Cs = correction applied to the heating value H, when it is metered at temperature and/or pressure conditions other than the standard conditions. At which the heating value of gas is specified [normally 30 inches mercury column (101.3 kPa) and 60 [deg]F (15.5 [deg]C)]; H = total heating value of gas, Btu per cu. ft. (MJ/m3 ); and Ec = electrical consumption of the water heater and, when used, the test setup recirculating pump, specified in Btu (kJ). Standby Loss for tank type water heaters shall be determined using Appendix E.2 Standby Loss for tube type water heaters that contain 10 or more gallons within the water heater, as determined under 5.27, shall be determined using Appendix E.3 E.3 Method Of Test For Measuring Standby Loss For Tube Type Instantaneous Water Heaters With 10 or Greater Gallons of Storage The appliance shall be installed as specified in G.1, Method of Test for Measuring Thermal Efficiency. This test may be conducted immediately following the thermal efficiency test. In this case, start the test after the main burner(s) has shut down and, if applicable, the water pump has shut down. Otherwise, the water heater shall be put into operation under the same test conditions specified in G.1, and the outlet water temperature shall be adjusted by varying the rate of flow until temperature is constant at 702 [deg]F (21 1 [deg]C) above the supply temperature. After the outlet temperatures becomes constant, as indicated by no variation in excess of 2 [deg]F (1 [deg]C) over a 3 minute period, shut down the main burner(s) and, if applicable, wait for the water pump to shut down, and then start the test. At the start of the test, record the time, ambient temperature, outlet water temperature, supply water temperature, and begin measuring the fuel and electric consumption. During the first hour, outlet water temperature, supply water temperature and the ambient air temperature shall be measured at the end of each 5 minute interval. For the remainder of the test, these measurements shall be made at the end of every 15 minute interval. The duration of this test shall be 24 hours. If the main burner is firing at 24 hours, continue the test until the main burner and the water pump, if applicable, have shut down. Immediately after the conclusion of the test, record the total fuel flow and electrical energy consumption, the final ambient air temperature, and the final outlet water temperature. Calculate the average of the ambient air temperatures and the supply water temperatures taken at the end of each time interval, including the initial and final values. The average hourly standby loss, S, rounded to the nearest Btu per hour, shall be determined by the formula: S = [(Cs(Qs)(H) + Ec)/t] - [([Delta]T4)/([Delta]T3)(t)Et ] where Cs = correction applied to the heating value of a gas H, when it is metered at temperature and/or pressure conditions other than the standard conditions for which the value of H is based; H = higher heating value of gas, Btu per cu. ft. (MJ/m3); Qs = total fuel flow as metered, cu. ft. (m3); [Delta]T3 = difference between the outlet temperature and the average value of the ambient air temperature, [deg]F ([deg]C); [Delta]T4 = difference between the average supply water temperature and the outlet temperature, [deg]F ([deg]C); t = duration of test, hrs.; Ec = electrical energy consumption expressed in Btu (kJ); and Et = thermal efficiency as determined under G1, Method of Test for Measuring Thermal Efficiency If the main burner(s) does not cycle on during this test, the hourly average standby loss calculation simplifies to: S = {(K(Va)([Delta]T4)/Et) + Ec {time} /t For water heaters that will not initiate or cause actions that will initiate burner operation, the following simplified procedure may be used to measure the hourly standby loss. This test may be conducted immediately following the thermal efficiency test. In this case, start the test after the main burner(s) has shut down and, if applicable, the water pump has shut down. Otherwise provide the electrical connection as specified in G.1, Method of Test for Measuring Thermal Efficiency, and start the test. At the start of the test, record the time and begin measuring the electric consumption for one hour. Record the duration of the test and the total electrical consumption during the test. The average hourly standby loss, S, rounded to the nearest Btu per hour, shall be determined by the formula: S = [(([Delta]T5 k Va / Et)/24) +Ec] Where: [Delta]T 5 = 70[emsp14][deg]F (38.9 [deg]C), difference between the supply and outlet water temperatures; k= 8.25 Btu/gallon [deg]F (4147.6331 J/l [deg]C), the nominal specific heat of water; Va = water contained in the water heater expressed in gallons (L), as determined under 5.27; Ec = electrical energy consumption expressed in Btu (kJ); and Et = thermal efficiency as determined under G1, Method of Test for Measuring [[Page 36295]] Thermal Efficiency. [FR Doc. 2016-13252 Filed 6-3-16; 8:45 am] BILLING CODE 6450-01-P
![36288 Federal Register / Vol. 81, No. 108 / Monday, June 6, 2016 / Notices
been predetermined. The capacity shall then interval, including the initial and final DEPARTMENT OF ENERGY
be computed in gallons and compared with values.
the manufacturer’s rated volume. The average hourly standby loss, S, Office of Energy Efficiency and
5.27 Capacities of Tube Type Water Heaters rounded to the nearest Btu per hour, shall be Renewable Energy
determined by the formula:
The amount of water contained in a tube [Case No. WH–004]
type water heater or in a water heater which S = [(Cs(Qs)(H) + Ec)/t]¥[(DT4)/(DT3)(t)Et]
has not been tested under 5.26 shall be Where Notice of Petition for Waiver of Raypak
determined if it is 10 gallons or more. Inc. From the Department of Energy
Cs = correction applied to the heating value
Method of Test of a gas H, when it is metered at Commercial Water Heater Test
The volume of water contained within the temperature and/or pressure conditions Procedure
water heater shall be determined. This other than the standard conditions for
determination shall include all water
AGENCY: Office of Energy Efficiency and
which the value of H is based; Renewable Energy, Department of
contained within the unit from the inlet H = higher heating value of gas, Btu per cu.
connection to the outlet connection but not Energy.
ft. (MJ/m3);
the capacity of any separate storage vessels. ACTION: Notice of petition for waiver and
The volume of water contained within the Qs = total fuel flow as metered, cu. ft. (m3);
request for public comments.
water heater shall then be computed in DT3 = difference between the outlet
gallons. temperature and the average value of the SUMMARY: This notice announces receipt
Note: The following proposed wording ambient air temperature, °F (°C); of and publishes a petition for waiver
would be added to Annex E: Efficiency Test DT4 = difference between the average supply from Raypak Inc. (Raypak) seeking an
Procedures of ANSI Z21.10.3–2013. water temperature and the outlet exemption from specified provisions
Standby Loss for tank type water heaters temperature, °F (°C); applicable to standby loss of the U.S.
shall be determined using Appendix E.2. t = duration of test, hrs.; Department of Energy (DOE) test
Standby Loss for tube type water heaters Ec = electrical energy consumption expressed procedure for commercial water heating
that contain 10 or more gallons within the in Btu (kJ); and
water heater, as determined under 5.27, shall
equipment. The waiver request pertains
Et = thermal efficiency as determined under to Raypak’s specified models of
be determined using Appendix E.3.
E.1, Method of Test for Measuring commercial instantaneous water heaters
E.3 Method of Test for Measuring Standby Thermal Efficiency containing 10 gallons or more of water.
Loss for Tube Type Instantaneous Water If the main burner(s) does not cycle on In its petition, Raypak contends that its
Heaters With 10 or Greater Gallons of Storage during this test, the hourly average specified water heater models that
The appliance shall be installed as standby loss calculation simplifies to: employ tube-type heat exchangers and
specified in E.1, Method of Test for S = {(K(Va)(DT4)/Et) + Ec }/t are designed to be flow activated cannot
Measuring Thermal Efficiency. This test may For water heaters that will not initiate or
be conducted immediately following the be accurately tested using the currently
cause actions that will initiate burner applicable DOE test procedure.
thermal efficiency test. In this case, start the
test after the main burner(s) has shut down operation, the following simplified procedure Consequently, Raypak seeks to use an
and, if applicable, the water pump has shut may be used to measure the hourly standby alternate test procedure to address
down. Otherwise the water heater shall be loss. certain issues involved in testing the
put into operation under the same test This test may be conducted immediately specific basic models identified in its
conditions specified in E.1 and the outlet following the thermal efficiency test. In this petition. DOE solicits comments, data,
water temperature shall be adjusted by case, start the test after the main burner(s) and information concerning Raypak’s
varying the rate of flow until temperature is has shut down and, if applicable, the water
constant at 70 ± 2 °F (21 ± 1°C) above the petition and its suggested alternate test
pump has shut down. Otherwise, provide the procedure.
supply temperature. After the outlet electrical connection as specified in E.1,
temperatures becomes constant, as indicated DATES: DOE will accept comments, data,
Method of Test for Measuring Thermal
by no variation in excess of 2 °F (1°C) over and information with respect to the
a 3 minute period, shut down the main Efficiency, and start the test.
Raypak Petition until July 6, 2016.
burner(s) and, if applicable, wait for the At the start of the test, record the time and
begin measuring the electric consumption for ADDRESSES: You may submit comments,
water pump to shut down, and then start the
test. one hour. Record the duration of the test and identified by case number WH–004, by
At the start of the test, record the time, the total electrical consumption during the any of the following methods:
ambient temperature, outlet water test. • Federal eRulemaking Portal: http://
temperature, supply water temperature and The average hourly standby loss, S, www.regulations.gov. Follow the
begin measuring the fuel and electric rounded to the nearest Btu per hour, shall be instructions for submitting comments.
consumption. determined by the formula: • Email: AS_Waiver_Requests@
During the first hour, outlet water ee.doe.gov. Include the case number
temperature, supply water temperature and S = [(((DT5) k Va/(Et))/24) +Ec]
[Case No. WH–004] in the subject line
the ambient air temperature shall be Where: of the message. Submit electronic
measured at the end of each 5 minute DT5 = 70 °F (38.9°C), difference between the
interval. For the remainder of the test, these
comments in WordPerfect, Microsoft
supply and outlet water temperatures; Word, PDF, or ASCII file format, and
measurements shall be made at the end of
k= 8.25 Btu/gallon °F (4147.6331 J/l°C), the avoid the use of special characters or
every 15 minute interval. The duration of this
test shall be 24 hours. If the main burner is nominal specific heat of water; any form of encryption.
firing at 24 hours, continue the test until the Va = water contained in the water heater • Postal Mail: Ms. Brenda Edwards,
main burner and the water pump, if expressed in gallons (L), as determined U.S. Department of Energy, Building
applicable, have shut down. under 5.27; Technologies Office, Mailstop EE–5B,
sradovich on DSK3TPTVN1PROD with NOTICES
Immediately after the conclusion of the Ec = electrical energy consumption expressed Petition for Waiver Case No. WH–004,
test, record the total fuel flow and electrical in Btu (kJ); and 1000 Independence Avenue SW.,
energy consumption, the final ambient air Et = thermal efficiency as determined under
temperature and the final outlet water
Washington, DC 20585–0121.
E.1, Method of Test for Measuring Telephone: (202) 586–2945. If possible,
temperature. Thermal Efficiency.
Calculate the average of the ambient air please submit all items on a compact
temperatures and the supply water [FR Doc. 2016–13251 Filed 6–3–16; 8:45 am] disc (CD), in which case it is not
temperatures taken at the end of each time BILLING CODE 6450–01–P necessary to include printed copies.
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![36290 Federal Register / Vol. 81, No. 108 / Monday, June 6, 2016 / Notices
commercial instantaneous water heaters vent does not discharge vertically, a A temperature sensing means,
containing 10 gallons or more of water: suitable elbow shall be installed first. shielded against direct radiation and
positioned at the vertical midpoint of
Z21.10.3–2012 Exhibit E Efficiency 2. Direct Vent Appliances and
the water heater at a perpendicular
Test Procedures Mechanically Vented
distance of approximately 24 in (610
E.1 Method of Test for Measuring The appliance shall be installed with mm) from the surface of the jacket, shall
Thermal Efficiency the venting arrangement specified in the be installed in the test room.
manufacturer’s instructions. The water
A water heater for installation on g. Setting Tank Thermostat
heater shall be installed with the
combustible floors shall be placed on 3⁄4
manufacturer’s specified minimum Before starting testing of a tank-type
in (1.9 cm) plywood platform supported
venting length venting arrangement. water heater, the setting of the
by three 2 x 4 runners. If the water
thermostat shall first be obtained by
heater is for installation on d. Water Supply
starting with the water in the system at
noncombustible floors, suitable During conduct of this test, the 70 ± 2 °F (21 ± 1 °C) and noting the
noncombustible material shall be placed temperature of the supply water shall be maximum mean temperature of the
on the platform. When the use of the maintained at 70 ± 2 °F (21 ± 1 °C). The water after the thermostat reduces the
platform for a large water heater is not pressure of the water supply shall be gas supply to a minimum. The
practical, the water heater may be maintained between 40 psi (275.8 kPa) temperature shall be 140 ± 5 °F (60 ± 3
placed on any suitable flooring. A wall and the maximum pressure specified by °C).
mounted water heater shall be mounted the manufacturer for the appliance
to a simulated wall section. under test. The accuracy of the pressure h. Energy Consumption
Placement in the test room shall be in measuring devices shall be ±1.0 psi (6.9 Instrumentation shall be installed
an area protected from drafts. kPa). For a water-tube water heater, the which determines, within ± 1 percent:
Inlet and outlet piping shall be inlet water temperature shall be
immediately turned vertically 1. The quantity and rate of gas
maintained at the supply water
downward from the connections on a consumed.
temperature or as specified by the
tank-type water heater so as to form heat manufacturer (see 2.1.8). 2. The quantity of electricity
traps. Any factory supplied heat traps A tank-type water heater shall be consumed by factory supplied water
shall be installed per the installation isolated by use of a shutoff valve in the heater components, and of the test loop
instructions. Thermocouples for supply line with an expansion tank recirculating pump, if used.
measuring inlet and outlet water installed in the supply line downstream
temperatures shall be installed before i. Room Ambient Temperature
of the shutoff valve. There shall be no
the inlet heat trap piping and after the shutoff means between the expansion The ambient air temperature of the
outlet heat trap piping. tank and the appliance inlet. test room shall be maintained at 75 ±
Water-tube water heaters shall be 10 °F (24 ± 5.5 °C), as measured by the
installed as shown in Figure 3, e. Gas Supply test room temperature sensing means
Arrangement for Testing Water-tube The gas rate shall be adjusted as described in ‘‘-f’’ above.
Type Instantaneous and Circulating specified in 2.3.3. The outlet pressure of The ambient air temperatures shall be
Water Heaters. the gas appliance pressure regulator measured at 15 minute intervals during
a. Piping Insulation shall be within ± 10 percent of that conduct of this test. The room
recommended by the manufacturer. The temperature shall not vary more than ±
Insulate the water piping, including higher heating value of the gas burned 7.0 °F (± 4 °C) from the average during
heat traps, for a length of 4 ft (1.22 m) shall be obtained. the test, temperature readings being
from the connection at the appliance taken by means of a recording
with material having a thermal f. Installation of Temperature Sensing thermometer at 15 minute intervals and
resistance (R) value of not less than 4 Means averaged at the end of the test.
[F·ft ·hr/Btu (0.7 K·m/W)]. Care should For tank-type water heaters, six (6)
be taken so the insulation does not temperature sensing means shall be j. Efficiency Measurement
contact any appliance surface except at installed inside the storage tank on the The outlet water temperature shall be
the location where the pipe connections vertical center of each of 6 adjusted by varying the rate of flow
penetrate the appliance jacket. nonoverlapping sections of until temperature is constant at 70 ±
b. Temperature and Pressure Relief approximately equal volume from the 2 °F (21 ± 1 °C) above the supply
Valve Insulation top to the bottom of the tank. Each temperature. After the outlet
temperature sensing means is to be temperature has become constant, as
If the manufacturer has not provided located as far as possible from any heat indicated by no variation in excess of
a temperature and pressure relief valve, source or other irregularity, anodic 2 °F (1 °C) over a 3 minute period, the
one shall be installed and insulated as protective device, or water tank or flue outlet water shall be diverted from the
specified above. wall. The anodic protective device may waste line to a weighing container. A
c. Vent Requirements be removed in order to install the scale with an error no greater than 1
temperature sensing means and all percent of the total draw shall be used.
1. Appliance Equipped With Draft testing may be carried out with the Water shall be allowed to flow into the
Hoods device removed. weighing container for exactly 30
sradovich on DSK3TPTVN1PROD with NOTICES
All tests shall be conducted with the If the temperature sensing means minutes. The gas consumption and
natural draft established by the cannot be installed as specified above, electrical power consumption of factory
following vent pipe arrangements: placement of the temperature sensing supplied heater components and of the
A vertically discharging vent means shall be made at the discretion of test loop-recirculating pump, if used,
connection shall have attached to and the testing agency so comparable water shall be measured for the 30 minute
vertically above it, 5 ft (1.52 m) of vent temperature measurements may be period. At this time, the outlet water
pipe the same size as the outlet. If the obtained. shall be diverted back into the waste
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![Federal Register / Vol. 81, No. 108 / Monday, June 6, 2016 / Notices 36291
line, the meter readings noted, and the indicated by no variation in excess of after the main burner(s) has shut down
weight of heater water recorded. 2 °F (1 °C) over a 3 minute period, shut and, if applicable, the water pump has
Throughout the period of test, supply down the main burner(s) and, if shut down. Otherwise provide the
and outlet water temperatures shall be applicable, wait for the water pump to electrical connection as specified in G.1,
recorded every minute. The shut down, and then start the test. Method of Test for Measuring Thermal
temperature, pressure and heating value At the start of the test, record the Efficiency, and start the test.
of the gas metered and barometric time, ambient temperature, outlet water At the start of the test, record the time
pressure shall be obtained. temperature, supply water temperature, and begin measuring the electric
A water meter with an error no greater and begin measuring the fuel and consumption for one hour. Record the
than 1 percent of the total draw may be electric consumption. duration of the test and the total
used instead of the scale and weighing During the first hour, outlet water electrical consumption during the test.
container. temperature, supply water temperature The average hourly standby loss, S,
Thermal efficiency, Et, shall be and the ambient air temperature shall be rounded to the nearest Btu per hour,
computed by use of the following measured at the end of each 5 minute shall be determined by the formula:
formula: interval. For the remainder of the test, S = [((DT5 k Va/Et)/24) +Ec]
Et = (KW (q2¥q1)/[(CF × Q × H) + Ec]) these measurements shall be made at Where:
× 100 the end of every 15 minute interval. The DT5 = 70 °F (38.9 °C), difference between the
duration of this test shall be 24 hours. supply and outlet water temperatures;
Where:
K = 1.004 Btu per pound mass degree F (4184 If the main burner is firing at 24 hours, k= 8.25 Btu/gallon °F (4147.6331 J/l °C), the
J/kg °C), nominal specific heat of water continue the test until the main burner nominal specific heat of water;
at 105 °F; and the water pump, if applicable, have Va = water contained in the water heater
W = total weight of water heated, lbs. (kg); shut down. expressed in gallons (L), as determined
q1 = average temperature of supply water, °F Immediately after the conclusion of under 5.27;
(°C); the test, record the total fuel flow and Ec = electrical energy consumption expressed
q2 = average temperature of outlet water, °F in Btu (kJ); and
electrical energy consumption, the final
(°C); Et = thermal efficiency as determined under
ambient air temperature, and the final G1, Method of Test for Measuring
Q = total gas consumed as metered, cu. ft. outlet water temperature.
(m3); Thermal Efficiency.
Calculate the average of the ambient
Cs = correction applied to the heating value The following basic models are
H, when it is metered at temperature
air temperatures and the supply water
temperatures taken at the end of each included in Raypak’s petition:
and/or pressure conditions other than
the standard conditions. At which the time interval, including the initial and XTherm Model WH7–1005*
heating value of gas is specified final values. XTherm Model WH7–1505*
[normally 30 inches mercury column The average hourly standby loss, S, XTherm Model WH7–2005*
(101.3 kPa) and 60 °F (15.5 °C)]; rounded to the nearest Btu per hour, XTherm Model WH7–2505*
H = total heating value of gas, Btu per cu. ft. shall be determined by the formula: XTherm Model WH7–3005*
(MJ/m3); and S = [(Cs(Qs)(H) + Ec)/t]¥[(DT4)/ XTherm Model WH7–3505*
Ec = electrical consumption of the water XTherm Model WH7–4005*
(DT3)(t)Et]
heater and, when used, the test setup MVB Model WH7–2503*
recirculating pump, specified in Btu (kJ). Where:
MVB Model WH7–3003*
Cs = correction applied to the heating value
Standby Loss for tank type water heaters of a gas H, when it is metered at
MVB Model WH7–3503*
shall be determined using Appendix temperature and/or pressure conditions MVB Model WH7–4003*
E.2 other than the standard conditions for IV. Summary and Request for
Standby Loss for tube type water heaters which the value of H is based; Comments
that contain 10 or more gallons within H = higher heating value of gas, Btu per cu.
the water heater, as determined under ft. (MJ/m3); Through this notice, DOE announces
5.27, shall be determined using Qs = total fuel flow as metered, cu. ft. (m3); receipt of and is publishing Raypak’s
Appendix E.3 DT3 = difference between the outlet petition for waiver from the DOE test
temperature and the average value of the procedure for commercial water heaters
E.3 Method of Test For Measuring ambient air temperature, °F (°C);
for its above-referenced commercial
Standby Loss for Tube Type DT4 = difference between the average supply
water temperature and the outlet instantaneous water heater models,
Instantaneous Water Heaters With 10 or which contain 10 gallons or more of
Greater Gallons of Storage temperature, °F (°C);
t = duration of test, hrs.; water. The petition contains no
The appliance shall be installed as Ec = electrical energy consumption expressed confidential information. The petition
specified in G.1, Method of Test for in Btu (kJ); and includes a suggested alternate test
Measuring Thermal Efficiency. This test Et = thermal efficiency as determined under procedure to determine the thermal
may be conducted immediately G1, Method of Test for Measuring efficiency and standby loss of Raypak’s
following the thermal efficiency test. In Thermal Efficiency specified basic models of commercial
this case, start the test after the main If the main burner(s) does not cycle instantaneous water heaters containing
burner(s) has shut down and, if on during this test, the hourly average 10 gallons or more of water. DOE is
applicable, the water pump has shut standby loss calculation simplifies to: considering including this alternate test
down. Otherwise, the water heater shall S = {(K(Va)(DT4)/Et) + Ec}/t procedure in its subsequent Decision
be put into operation under the same For water heaters that will not initiate and Order.
sradovich on DSK3TPTVN1PROD with NOTICES
test conditions specified in G.1, and the or cause actions that will initiate burner DOE solicits comments from
outlet water temperature shall be operation, the following simplified interested parties on all aspects of the
adjusted by varying the rate of flow procedure may be used to measure the petition, including the suggested
until temperature is constant at 70 ± hourly standby loss. alternate test procedure and calculation
2 °F (21 ± 1 °C) above the supply This test may be conducted methodology. Pursuant to 10 CFR
temperature. After the outlet immediately following the thermal 431.401(d), any person submitting
temperatures becomes constant, as efficiency test. In this case, start the test written comments to DOE must also
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![36294 Federal Register / Vol. 81, No. 108 / Monday, June 6, 2016 / Notices
g. Setting Tank Thermostat (m3); Calculate the average of the ambient
Before starting testing of a tank-type water Cs = correction applied to the heating value air temperatures and the supply water
heater, the setting of the thermostat shall first H, when it is metered at temperature temperatures taken at the end of each
be obtained by starting with the water in the and/or pressure conditions other than time interval, including the initial and
system at 70 ± 2 °F (21 ± 1 °C) and noting the standard conditions. At which the
heating value of gas is specified
final values.
the maximum mean temperature of the water The average hourly standby loss, S,
after the thermostat reduces the gas supply to [normally 30 inches mercury column
(101.3 kPa) and 60 °F (15.5 °C)]; rounded to the nearest Btu per hour,
a minimum. The temperature shall be 140 ±
H = total heating value of gas, Btu per cu. ft. shall be determined by the formula:
5 °F (60 ± 3 °C).
(MJ/m3); and S = [(Cs(Qs)(H) + Ec)/t] ¥ [(DT4)/
h. Energy Consumption Ec = electrical consumption of the water (DT3)(t)Et ]
Instrumentation shall be installed which heater and, when used, the test setup where
determines, within ± 1 percent: recirculating pump, specified in Btu (kJ).
1. The quantity and rate of gas consumed. Cs = correction applied to the heating value
2. The quantity of electricity consumed by Standby Loss for tank type water heaters of a gas H, when it is metered at
factory supplied water heater components, shall be determined using Appendix E.2 temperature and/or pressure conditions
and of the test loop recirculating pump, if other than the standard conditions for
Standby Loss for tube type water heaters which the value of H is based;
used.
that contain 10 or more gallons within H = higher heating value of gas, Btu per cu.
i. Room Ambient Temperature the water heater, as determined under ft. (MJ/m3);
The ambient air temperature of the test 5.27, shall be determined using Qs = total fuel flow as metered, cu. ft. (m3);
room shall be maintained at 75 ± 10 °F (24 Appendix E.3 DT3 = difference between the outlet
± 5.5 °C), as measured by the test room temperature and the average value of the
temperature sensing means described in ‘‘-f’’ E.3 Method Of Test For Measuring ambient air temperature, °F (°C);
above. Standby Loss For Tube Type DT4 = difference between the average supply
The ambient air temperatures shall be Instantaneous Water Heaters With 10 water temperature and the outlet
measured at 15 minute intervals during or Greater Gallons of Storage temperature, °F (°C);
conduct of this test. The room temperature t = duration of test, hrs.;
shall not vary more than ± 7.0 °F (± 4°C) from The appliance shall be installed as Ec = electrical energy consumption expressed
the average during the test, temperature specified in G.1, Method of Test for in Btu (kJ); and
readings being taken by means of a recording Measuring Thermal Efficiency. This test Et = thermal efficiency as determined under
thermometer at 15 minute intervals and may be conducted immediately G1, Method of Test for Measuring
averaged at the end of the test. following the thermal efficiency test. In Thermal Efficiency
j. Efficiency Measurement this case, start the test after the main If the main burner(s) does not cycle
The outlet water temperature shall be burner(s) has shut down and, if on during this test, the hourly average
adjusted by varying the rate of flow until applicable, the water pump has shut standby loss calculation simplifies to:
temperature is constant at 70 ±2 °F (21 ± 1 down. Otherwise, the water heater shall S = {(K(Va)(DT4)/Et) + Ec }/t
°C) above the supply temperature. After the be put into operation under the same
outlet temperature has become constant, as test conditions specified in G.1, and the For water heaters that will not initiate
indicated by no variation in excess of 2 °F outlet water temperature shall be or cause actions that will initiate burner
(1 °C) over a 3 minute period, the outlet adjusted by varying the rate of flow operation, the following simplified
water shall be diverted from the waste line until temperature is constant at 70 ± 2 procedure may be used to measure the
to a weighing container. A scale with an error
°F (21 ± 1 °C) above the supply hourly standby loss.
no greater than 1 percent of the total draw This test may be conducted
shall be used. Water shall be allowed to flow temperature. After the outlet
immediately following the thermal
into the weighing container for exactly 30 temperatures becomes constant, as
efficiency test. In this case, start the test
minutes. The gas consumption and electrical indicated by no variation in excess of 2
after the main burner(s) has shut down
power consumption of factory supplied °F (1 °C) over a 3 minute period, shut
and, if applicable, the water pump has
heater components and of the test loop- down the main burner(s) and, if
recirculating pump, if used, shall be shut down. Otherwise provide the
applicable, wait for the water pump to
measured for the 30 minute period. At this electrical connection as specified in G.1,
shut down, and then start the test.
time, the outlet water shall be diverted back At the start of the test, record the Method of Test for Measuring Thermal
into the waste line, the meter readings noted, time, ambient temperature, outlet water Efficiency, and start the test.
and the weight of heater water recorded.
temperature, supply water temperature, At the start of the test, record the time
Throughout the period of test, supply and and begin measuring the electric
outlet water temperatures shall be recorded and begin measuring the fuel and
electric consumption. consumption for one hour. Record the
every minute. The temperature, pressure and duration of the test and the total
heating value of the gas metered and During the first hour, outlet water
temperature, supply water temperature electrical consumption during the test.
barometric pressure shall be obtained.
and the ambient air temperature shall be The average hourly standby loss, S,
A water meter with an error no greater than
1 percent of the total draw may be used measured at the end of each 5 minute rounded to the nearest Btu per hour,
instead of the scale and weighing container. interval. For the remainder of the test, shall be determined by the formula:
Thermal efficiency, Et, shall be computed these measurements shall be made at S = [((DT5 k Va / Et)/24) +Ec]
by use of the following formula: the end of every 15 minute interval. The Where:
Et = (KW (q2 ¥ q1)/[(CF × Q × H) + Ec]) × 100 DT5 = 70 °F (38.9 °C), difference between the
duration of this test shall be 24 hours.
where If the main burner is firing at 24 hours, supply and outlet water temperatures;
K = 1.004 Btu per pound mass degree F (4184 continue the test until the main burner k= 8.25 Btu/gallon °F (4147.6331 J/l °C), the
sradovich on DSK3TPTVN1PROD with NOTICES
J/kg °C), nominal specific heat of water and the water pump, if applicable, have nominal specific heat of water;
at 105 °F; Va = water contained in the water heater
W = total weight of water heated, lbs. (kg);
shut down. expressed in gallons (L), as determined
q1 = average temperature of supply water, °F
Immediately after the conclusion of under 5.27;
(°C); the test, record the total fuel flow and Ec = electrical energy consumption expressed
q2 = average temperature of outlet water, °F electrical energy consumption, the final in Btu (kJ); and
(°C); ambient air temperature, and the final Et = thermal efficiency as determined under
Q = total gas consumed as metered, cu. ft. outlet water temperature. G1, Method of Test for Measuring
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![Federal Register / Vol. 81, No. 108 / Monday, June 6, 2016 / Notices 36295
Thermal Efficiency. Washington, DC 20585–0121. this notice.2 Part C specifically includes
[FR Doc. 2016–13252 Filed 6–3–16; 8:45 am] Telephone: (202) 586–2945. If possible, definitions (42 U.S.C. 6311), energy
BILLING CODE 6450–01–P please submit all items on a compact conservation standards (42 U.S.C 6313),
disc (CD), in which case it is not test procedures (42 U.S.C. 6314),
necessary to include printed copies. labeling provisions (42 U.S.C. 6315),
DEPARTMENT OF ENERGY • Hand Delivery/Courier: Ms. Brenda and the authority to require information
Edwards, U.S. Department of Energy, and reports from manufacturers. (42
Office of Energy Efficiency and Building Technologies Office, 950 U.S.C. 6316) With respect to test
Renewable Energy L’Enfant Plaza SW., Suite 600, procedures, Part C authorizes the
[Case No. WH–002] Washington, DC 20024. If possible, Secretary of Energy (the Secretary) to
please submit all items on a CD, in prescribe test procedures that are
Notice of Petition for Waiver of HTP, which case it is not necessary to include reasonably designed to produce results
Inc. From the Department of Energy printed copies. that measure energy efficiency, energy
Commercial Water Heater Test Docket: The docket, which includes use, and estimated annual operating
Procedure Federal Register notices, comments, costs during a representative average-
and other supporting documents/ use cycle, and that are not unduly
AGENCY: Office of Energy Efficiency and
materials, is available for review at burdensome to conduct. (42 U.S.C.
Renewable Energy, Department of
www.regulations.gov. All documents in 6314(a)(2)) EPCA also directs DOE to
Energy.
the docket are listed in the consider amending the existing test
ACTION: Notice of petition for waiver and
www.regulations.gov index. However, procedure for each type of equipment
request for public comments. listed each time the industry test
some documents listed in the index,
SUMMARY: This notice announces receipt such as those containing information procedure is amended for such
of and publishes a petition for waiver that is exempt from public disclosure, equipment. (42 U.S.C. 6314(a)(4)) The
from HTP, Inc. (HTP) seeking an may not be publicly available. test procedure for commercial water
exemption from specified provisions For further information on how to heaters is contained in the Code of
applicable to standby loss of the U.S. submit a comment, or review other Federal Regulations (CFR) at 10 CFR
Department of Energy (DOE) test public comments and the docket, part 431, subpart G.
procedure for commercial water heating contact Ms. Brenda Edwards at (202) DOE’s regulations set forth at 10 CFR
equipment. The waiver request pertains 586–2945 or by email: 431.401 contain provisions that permit
to HTP’s specified models of Brenda.Edwards@ee.doe.gov. a person to seek a waiver from the test
commercial instantaneous water heaters procedure requirements for covered
FOR FURTHER INFORMATION CONTACT: Mr. equipment if at least one of the
containing 10 gallons or more of water.
Bryan Berringer, U.S. Department of following conditions is met: (1) The
In its petition, HTP contends that its
Energy, Building Technologies Office, basic model contains one or more
specified water heater models that
Mail Stop EE–5B, 1000 Independence design characteristics that prevent
employ tube-type heat exchangers and
Avenue SW., Washington, DC 20585– testing according to the prescribed test
are designed to be flow activated cannot
0121. Telephone: (202) 586–0371. procedures; or (2) the prescribed test
be accurately tested using the currently
Email: Bryan.Berringer@ee.doe.gov. procedures may evaluate the basic
applicable DOE test procedure.
Consequently, HTP seeks to use an Mr. Eric Stas, U.S. Department of model in a manner so unrepresentative
alternate test procedure to address Energy, Office of the General Counsel, of its true energy consumption as to
certain issues involved in testing the GC–33, 1000 Independence Avenue provide materially inaccurate
specific basic models identified in its SW., Washington, DC 20585–0121. comparative data. 10 CFR 431.401(a)(1).
petition. DOE solicits comments, data, Telephone: (202) 586–9507. Email: A petitioner must include in its petition
and information concerning HTP’s Eric.Stas@hq.doe.gov. any alternate test procedures known to
petition and its suggested alternate test For information on how to submit or the petitioner to evaluate the basic
procedure. review public comments, contact Ms. model in a manner representative of its
DATES: DOE will accept comments, data, Brenda Edwards, U.S. Department of energy consumption. 10 CFR
and information with respect to the HTP Energy, Office of Energy Efficiency and 431.401(b)(1)(iii). DOE may grant a
Petition until July 6, 2016. Renewable Energy, Building waiver subject to conditions, including
Technologies Office, Mailstop EE–5B, adherence to alternate test procedures.
ADDRESSES: You may submit comments,
1000 Independence Avenue SW., 10 CFR 431.401(f)(2). As soon as
identified by case number WH–002, by
Washington, DC 20585–0121. practicable after the granting of any
any of the following methods:
• Federal eRulemaking Portal: http:// Telephone: (202) 586–2945. Email: waiver, DOE will publish in the Federal
www.regulations.gov. Follow the Brenda.Edwards@ee.doe.gov. Register a notice of proposed
instructions for submitting comments. SUPPLEMENTARY INFORMATION: rulemaking to amend its regulations so
• Email: AS_Waiver_Requests@ as to eliminate any need for the
I. Background and Authority continuation of such waiver. As soon
ee.doe.gov. Include the case number
[Case No. WH–002] in the subject line Title III, Part C 1 of the Energy Policy thereafter as practicable, DOE will
of the message. Submit electronic and Conservation Act of 1975 (EPCA), publish in the Federal Register a final
comments in WordPerfect, Microsoft Public Law 94–163 (42 U.S.C. 6311– rule. 10 CFR 431.401(l).
Word, PDF, or ASCII file format, and 6317, as codified), added by Public Law
sradovich on DSK3TPTVN1PROD with NOTICES
II. Petition for Waiver of Test Procedure
avoid the use of special characters or 95–619, established the Energy
any form of encryption. Conservation Program for Certain On February 17, 2015, HTP filed a
• Postal Mail: Ms. Brenda Edwards, Industrial Equipment, which includes petition for waiver from the DOE test
U.S. Department of Energy, Building commercial water heaters, the focus of 2 All references to EPCA in this document refer
Technologies Office, Mailstop EE–5B, to the statute as amended through the Energy
Petition for Waiver Case No. WH–002, 1 For editorial reasons, upon codification in the Efficiency Improvement Act of 2015 (EEIA 2015),
1000 Independence Avenue SW., U.S. Code, Part C was re-designated Part A–1. Public Law 114–11 (April 30, 2015).
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Document Created: 2016-06-04 00:16:43
Document Modified: 2016-06-04 00:16:43
| Category | Regulatory Information | |
| Collection | Federal Register | |
| sudoc Class | AE 2.7: GS 4.107: AE 2.106: | |
| Publisher | Office of the Federal Register, National Archives and Records Administration | |
| Section | Notices | |
| Action | Notice of petition for waiver and request for public comments. | |
| Dates | DOE will accept comments, data, and information with respect to the Raypak Petition until July 6, 2016. | |
| Contact | Mr. Bryan Berringer, U.S. Department of Energy, Building Technologies Office, Mail Stop EE-5B, 1000 Independence Avenue SW., Washington, DC 20585-0121. Telephone: (202) 586-0371. Email: [email protected] Mr. Eric Stas, U.S. Department of Energy, Office of the General Counsel, GC-33, 1000 Independence Avenue SW., Washington, DC 20585- 0121. Telephone: (202) 586-9507. Email: [email protected] | |
| FR Citation | 81 FR 36288 |
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