10 CFR 431.102 - Definitions concerning commercial water heaters, hot water supply boilers, and unfired hot water storage tanks.

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There are 9 Updates appearing in the Federal Register for 10 CFR Part 431. View below or at eCFR (GPOAccess)
§ 431.102 Definitions concerning commercial water heaters, hot water supply boilers, and unfired hot water storage tanks. Link to an amendment published at 79 FR 40586, July 11, 2014.
The following definitions apply for purposes of this subpart G, and of subparts J through M of this part. Any words or terms not defined in this section or elsewhere in this part shall be defined as provided in section 340 of the Act, 42 U.S.C. 6311.
ASTM-D-2156-80 means the test standard published in 1980 by the American Society of Testing and Measurements and titled Method for Smoke Density in Flue Gases from Burning Distillate Fuels.
Basic model means all water heaters, hot water supply boilers, or unfired hot water storage tanks manufactured by one manufacturer within a single equipment class, having the same primary energy source (e.g., gas or oil) and that have essentially identical electrical, physical and functional characteristics that affect energy efficiency.
Hot water supply boiler means a packaged boiler that is industrial equipment and that,
(1) Has an input rating from 300,000 Btu/hr to 12,500,000 Btu/hr and of at least 4,000 Btu/hr per gallon of stored water,
(2) Is suitable for heating potable water, and
(3) Meets either or both of the following conditions:
(i) It has the temperature and pressure controls necessary for heating potable water for purposes other than space heating, or
(ii) The manufacturer's product literature, product markings, product marketing, or product installation and operation instructions indicate that the boiler's intended uses include heating potable water for purposes other than space heating.
Instantaneous water heater means a water heater that has an input rating not less than 4,000 Btu/hr per gallon of stored water, and that is industrial equipment, including products meeting this description that are designed to heat water to temperatures of 180 °F or higher.
Packaged boiler means a boiler that is shipped complete with heating equipment, mechanical draft equipment and automatic controls; usually shipped in one or more sections and does not include a boiler that is custom designed and field constructed. If the boiler is shipped in more than one section, the sections may be produced by more than one manufacturer, and may be originated or shipped at different times and from more than one location.
R-value means the thermal resistance of insulating material as determined based on ASTM Standard Test Method C177-97 or C518-91 and expressed in (°F·ft2·h/Btu).
Standby loss means the average hourly energy required to maintain the stored water temperature, expressed as applicable either (1) as a percentage (per hour) of the heat content of the stored water and determined by the formula for S given in Section 2.10 of ANSI Z21.10.3-1998, denoted by the term “S,” or (2) in Btu per hour based on a 70 °F temperature differential between stored water and the ambient temperature, denoted by the term “SL.”
Storage water heater means a water heater that heats and stores water within the appliance at a thermostatically controlled temperature for delivery on demand and that is industrial equipment. Such term does not include units with an input rating of 4,000 Btu/hr or more per gallon of stored water.
Tank surface area means, for the purpose of determining portions of a tank requiring insulation, those areas of a storage tank, including hand holes and manholes, in its uninsulated or pre-insulated state, that do not have pipe penetrations or tank supports attached.
Thermal efficiency for an instantaneous water heater, a storage water heater or a hot water supply boiler means the ratio of the heat transferred to the water flowing through the water heater to the amount of energy consumed by the water heater as measured during the thermal efficiency test procedure prescribed in this subpart.
Unfired hot water storage tank means a tank used to store water that is heated externally, and that is industrial equipment.
[69 FR 61983, Oct. 21, 2004, as amended at 76 FR 12503, Mar. 7, 2011; 78 FR 79599, Dec. 31, 2013]
Effective Date Note:
At 79 FR 40586, July 11, 2014, § 431.102 was amended by adding the definition of “Residential-duty commercial water heater” in alphabetical order, effective July 13, 2015. For the convenience of the user, the added text is set forth as follows:
§ 431.102 Definitions concerning commercial water heaters, hot water supply boilers, and unfired hot water storage tanks.
Residential-duty commercial water heater means any gas-fired, electric, or oil storage or instantaneous commercial water heater that meets the following conditions:
(1) For models requiring electricity, uses single-phase external power supply;
(2) Is not designed to provide outlet hot water at temperatures greater than 180 °F; and
(3) Does not meet any of the following criteria:
Water heater type Indicator of non-residential application
Gas-fired Storage Rated input >105 kBtu/h; Rated storage volume >120 gallons.
Oil-fired Storage Rated input >140 kBtu/h; Rated storage volume >120 gallons.
Electric Storage Rated input >12 kW; Rated storage volume >120 gallons.
Heat Pump with Storage Rated input >12 kW; Rated current >24 A at a rated voltage of not greater than 250 V; Rated storage volume >120 gallons.
Gas-fired Instantaneous Rated input >200 kBtu/h; Rated storage volume >2 gallons.
Electric Instantaneous Rated input >58.6 kW; Rated storage volume >2 gallons.
Oil-fired Instantaneous Rated input >210 kBtu/h; Rated storage volume >2 gallons.

Title 10 published on 2015-01-01.

The following are only the Rules published in the Federal Register after the published date of Title 10.

For a complete list of all Rules, Proposed Rules, and Notices view the Rulemaking tab.

  • 2015-07-31; vol. 80 # 147 - Friday, July 31, 2015
    1. 80 FR 45758 - Energy Conservation Program: Test Procedure for Refrigerated Bottled or Canned Beverage Vending Machines
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      DEPARTMENT OF ENERGY, Office of Energy Efficiency and Renewable Energy
      Final rule.
      The effective date of this rule is August 31, 2015. Compliance with Appendix A to subpart Q of 10 CFR part 431 will be mandatory for representations made on or after January 27, 2016. Compliance with Appendix B to subpart Q of 10 CFR part 431 will be mandatory for representations made on or after the compliance date of any amended energy conservation standards. (Docket No. EERE-2013-BT-STD-0022). DOE will publish a document in the Federal Register announcing the compliance date for Appendix B to subpart Q of 10 CFR part 431. The incorporation by reference of certain publications listed in this rule was approved by the Director of the Federal Register as of August 31, 2015.
      10 CFR Parts 429 and 431

Title 10 published on 2015-01-01

The following are ALL rules, proposed rules, and notices (chronologically) published in the Federal Register relating to 10 CFR Part 431 after this date.

  • 2015-08-28; vol. 80 # 167 - Friday, August 28, 2015
    1. 80 FR 52210 - Energy Conservation Program for Consumer Products: Energy Conservation Standards for Commercial Prerinse Spray Valves
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      DEPARTMENT OF ENERGY, Office of Energy Efficiency and Renewable Energy
      Extension of public comment period.
      The comment period for the notice of proposed rulemaking for commercial prerinse spray valves, published on July 9, 2015 (80 FR 39486) is extended to September 22, 2015.
      10 CFR Part 431