Energy and Internal Volume of Refrigerating Appliances AHAM HRF pi AHAM HRF PREFACE The Association of Home. BY ORDER OF THE EXECUTIVE DIRECTOROffice of the Federal RegisterWashington, Authority of the Code of Federal Regulations. Energy and Internal Volume of Refrigerating Appliances – AHAM HRF This standard establishes a uniform, repeatable procedure and standard methods.

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In case of interference with hardware at the sensor locations specified in 5.

Item Detail – AHAM HRF (Energy & Volume Refrigerating Appliances)

The second part of the method shall be conducted separately for each automatic defrost system. Take measurements at regular intervals not to exceed 4 minutes. Results of tests in accordance with this standard may be publicly stated.

Space occupied by shelves molded into the inner door panel.

Types of defrost systems that apply to refrigerators and freezers are defined in Sections 3. The measured temperature of a compartment shall be the average of all sensor temperature readings taken in that compartment at a particular time.

The test is repeated on at least one more unit of the model and until the Mean Time Between Defrosts for the multiple unit tests MTBD2 satisfies the statistical relationship. For analog measuring instruments the smallest scale division must not exceed 1 V.

AHAM HRF-1: Household Refrigerators, Combination Refrigerator-Freezers, and Household Freezers

A container in which ice can be stored. For wine chillers, basic refrigerators and refrigerator-freezers, if the interior arrangements of the cabinet do not conform to those shown in Figure and Figuremeasurements shall be taken at selected locations chosen to represent approximately the entire refrigerated compartment Each compartment shall have the number of thermocouples specified in Figure and Figure These figures graphically support procedures for determination of volume described in Sections 4.


Section 4 replaces Brf 5, 6 and 7 of HRF with a simplified volume calculation procedure. A control scheme that changes the defrost interval from a fixed length 208 an extended length without any intermediate steps is not considered a variable defrost control. The purpose of this standard is to establish a uniform and repeatable agam or standard method for measuring specified product characteristics of household refrigerators, household wine chillers and household freezers.

When testing for energy consumption, this is considered a manual defrost product. If the model has the quick freeze option, it shall be used to bypass the temperature control.

The defrost heater shall not either function or turn off differently during the energy test than it would when in typical room conditions. If the median position can not be obtained, then set product at next warmest setting.

Basic refrigerator 39F 3. When the volume is determined, internal fittings such as shelves, removable partitions, containers and interior light housings shall be considered as not being in place. There shall be no loads in the freezer compartments of automatic defrost freezers, refrigerator-freezers and all-refrigerators.

See the next figures for Dispenser Unit clarification. Already Subscribed to this document. The sum of i the fresh food compartment volume in cubic feet and ii the product of an adjustment factor and the freezer compartment volume in cubic feet see Section 6. Unless the area is obstructed by shields or baffles, the gradient shall be maintained from 2 inches 5.

Weighting shall be a cylindrical brass or copper mass 1. Therefore, the times between defrost should vary with different usage patterns and wham a continuum of lengths of time between defrosts as inputs vary. Weight shall be determined nrf use of scales accurate to within 0.

Perform the optional test for variable defrost control models to find CT. Subscription pricing is determined by: A system in which the refrigerated surfaces of the freezer compartment are defrosted manually and the refrigerated surfaces of the fresh food compartment are defrosted automatically. They shall relate to actual use conditions and be technically and scientifically sound.


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The total volume shall be the sum of the volumes of all compartments and be recorded to the nearest 0. Temperatures shall be recorded at three 2008 as shown in Figure A system in which the defrost cycle is manually initiated and automatically terminated, with automatic resumption of normal refrigeration at the conclusion of the defrost operation.

Chiller or drip trays shall be in their proper places during all tests.

All components not explicitly associated with the harvesting of ice must be operative during the energy test and shall be energized in a manner consistent with the duty cycle necessary to perform the respective functions.

In addition, standardized testing temperatures have been changed for fresh food and freezer compartments to harmonize with the IEC. Energy used during adaptive defrost shall continue to be tested and adjusted per the calculation provided for in this standard.

We have no amendments or corrections for this standard. This standard is also available to be included in Standards Subscriptions. As the voice of the U. All leads from all measuring devices shall be brought outside of the cabinet in such a manner as ahak prevent air leakage.

Your Alert Profile lists the documents that will be monitored. Testing shall be performed in accordance with one of the following sections using 2008 appropriate standardized reference temperatures: