ASHRAE 37-2009 PDF

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The U. Department of Energy DOE proposes to revise its test procedures for central air conditioners and heat pumps established under the Energy Policy and Conservation Act. DOE received further public comment for revising the test procedure in a November Request for Information for energy conservation standards for central air conditioners and heat pumps. DOE proposes in this SNOPR: A new basic model definition as it pertains to central air conditioners and heat pumps and revised rating requirements; revised alternative efficiency determination methods; termination of active waivers and interim waivers; revised procedures to determine off mode power consumption; changes to the test procedure that would improve test repeatability and reduce test burden; clarifications to ambiguous sections of the test procedure intended also to improve test repeatability; inclusion of, amendments to, and withdrawals of test procedure revisions proposed in published test procedure notices in the rulemaking effort leading to this supplemental notice of proposed rulemaking; and changes to the test procedure that would improve field representativeness.

Some of these proposals also include incorporation by reference of updated industry standards. DOE welcomes comments from the public on any subject within the scope of this test procedure rulemaking. Comments may be submitted using any of the following methods:. Federal eRulemaking Portal: www. Follow the instructions for submitting comments.

Mail: Ms. Brenda Edwards, U. If possible, please submit all items on a CD, in which case it is not necessary to include printed copies. Telephone: For detailed instructions on submitting comments and additional information on the rulemaking process, see section V of this document Public Participation.

All documents in the docket are listed in the regulations. However, some documents listed in the index, such as those containing information that is exempt from public disclosure, may not be publicly available.

A link to the docket Web page can be found at: www1. This Web page will contain a link to the docket for this notice on the www. The www. See section V for information on how to submit comments through regulations. Ashley Armstrong, U. Email: Ashley. Armstrong ee. Johanna Hariharan, U. Email: Johanna. Hariharan hq. For further information on how to submit a comment, review other public comments and the docket, or participate in the public meeting, contact Ms.

Brenda Edwards at or by email: Brenda. Edwards ee. DOE intends to incorporate by reference the following industry standards into Part Authority and Background. Summary of the Supplementary Notice of Proposed Rulemaking. Basic Model Definition. Additional Definitions. Determination of Certified Rating. Product-Specific Enforcement Provisions. Alternative Efficiency Determination Methods. Elimination of the Pre-Approval Requirement. Requirements for Independent Coil Manufacturers.

Failure to Meet Certified Ratings. Action Following a Determination of Noncompliance. Measurement of Off Mode Power Consumption. Calculation and Weighting of P1 and P2. Impacts on Product Reliability. Representative Measurement of Energy Use. Indoor Fan Speed Settings. Outdoor Room Temperature Variation.

Requirements for the Air Sampling Device. Refrigerant Charging Requirements. Test Unit Voltage Supply. Coefficient of Cyclic Degradation. Break-in Periods Prior to Testing. Damping Pressure Transducer Signals. Clarification of Test Procedure Provisions. Manufacturer Consultation. Clarifying the Definition of a Mini-Split System.

Clarifying the Definition of a Multi-Split System. Test Procedure Reprint. Improving Field Representativeness of the Test Procedure. Revised Heating Load Line. Revised Ambient Test Conditions. Cyclic Test With a Wet Coil. Inclusion of the Calculation for Sensible Heating Ratio. Procedural Issues and Regulatory Review. Review Under Executive Order Review Under the Regulatory Flexibility Act. Review Under the Paperwork Reduction Act of Description of Materials Incorporated by Reference.

Attendance at Public Meeting. Conduct of Public Meeting. Submission of Comments. Approval of the Office of the Secretary. Under EPCA, the program consists of four activities: 1 Testing; 2 labeling; 3 Federal energy conservation standards; and 4 certification, compliance, and enforcement. The testing requirements consist of test procedures that manufacturers of covered products must use as the basis for certifying to DOE that their products comply with applicable energy conservation standards adopted pursuant to EPCA and for representing the efficiency of those products.

Specifically, EPCA provides that an amended test procedure shall produce results which measure the energy Start Printed Page efficiency, energy use, or estimated annual operating cost of a covered product over an average or representative period of use, and shall not be unduly burdensome to conduct.

C b 1 A DOE last published a test procedure final rule for central air conditioner and heat pumps on October 22, Finally, in any rulemaking to amend a test procedure, DOE must determine whether and the extent to which the proposed test procedure would change the measured efficiency of a system that was tested under the existing test procedure.


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This appendix covers the test requirements used to measure the energy performance of single-duct and dual-duct portable air conditioners, as defined at 10 CFR An indicator that only shows the user that the portable air conditioner is in the off position is included within the classification of an off mode. A timer is a continuous clock function which may or may not be associated with a display that provides regular scheduled tasks e. Where applicable, measure duct heat transfer and infiltration air heat transfer according to section 4. Note that if a product is able to operate as both a single-duct and dual-duct portable AC as distributed in commerce by the manufacturer, it must be tested and rated for both duct configurations. Use ducting components provided by the manufacturer, including, where provided by the manufacturer, ducts, connectors for attaching the duct s to the test unit, sealing, insulation, and window mounting fixtures.

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Applies to electrically driven mechanical-compression unitary air conditioners and heat pumps consisting of one or more assemblies that include an indoor air coil s , a compressor s , and an outdoor coil s. Where such equipment is provided in more than one assembly, the separated assemblies are designed to be used together. This standard does not include methods of testing the following: cooling coils for separate use; condensing units for separate use; room air conditioners; heat-operated unitary equipment; liquid chilling packages; multiple indoor air coils operating simultaneously in heating and cooling modes. Your Alert Profile lists the documents that will be monitored. If the document is revised or amended, you will be notified by email.

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