Description

ASHRAE Standard 40 provides test methods for determining the heating and cooling output capacities and energy inputs of unitary air-conditioning and heat pump equipment that is heat-operated.

The 2014 revision of Standard 40 includes the following changes:

The Scope in Section 2.3 was revised to remove specific mention ofreferences and to clarify the intended scope

The definition of “batch process” was revised to eliminate use of the term “cycle”

Definitions were added for “electrically driven unitary air conditioners or heat pumps” and “heat-operatedabsorption chillers.” Definitions for “heat-operated” and “heat-operated unitary equipment” were revised

Definitions for “section” and “sorbent” were removed

The unit conversions for temperature in the definitions for “standard air” and “standard temperature” were corrected

Sections 4(c) and 4(d) were revised to improve clarity

The title of ASHRAE Standard 37 was corrected in 5. 1(d)

The capacity range of Sections 5.2.1, 5.2.2, and 14.1.2 was revised to more closely align with current industry classifications

Section 5.2.2.1 was revised for clarity

Section 5.2.3 was eliminated as it did not have enforceable requirements

Section 5.3.1.1 was revised to increase the allowable heating value range for natural gas

In Table 5.3.1 (previously Table I), the Sl units for heating value were corrected. The default heat value for natural gas was revised. The source reference was removed

The wording of Sections 6.1.2, 6.6.2.4, R.2, 9.2.3, 9.2.4, 10.3.2, 1 1.1.3, 1 1.2.4, and 12.1.4. 1 were revised to usc enforceable language

Section 6.1.3 was eliminated as it did not have enforceable requirements

The references in Section 6.5 were updated

The footnotes from Section 6.6 were revised to direct the user to the correct portion of the standard

Tables 1 0.3.2 (previously Table 4a and 4b) were relocated

In Section 9.5 .1, the definition of qthi was revised

The alternative requirements for airflow measurement in Section I 0 were clarified. Additional alternative requirements are contained in the new 12.3.4

Sections 1 0.4. 1, 1 0.4.2, and 1 0.4.3 were revised for clarity

The option to usc mercury-in-glass-thermometers in Section 12.1 .1 was removed

The section that was previously numbered 12.1.4.1 was eliminated

The suggested list of pressure measurement types was removed from Section 12.2.1

Section 14.1.l.h was revised to stipulate that it applied to electrical power

Section 16 references were updated and reorganized. References that arc not required for compliance with the standard were removed

Informative Annex A was revised to eliminate unnecessary material.

Product Details

Published:

2014

ANSI:

ANSI Approved

Number of Pages:

28

File Size:

1 file , 1.3 MB

Redline File Size:

2 files , 22 MB

Product Code(s):

D-86112, 86112