Appendix B to Subpart C of Part 429 - Sampling Plan for Enforcement Testing of Covered Equipment and Certain Low-Volume Covered Products
10:3.0.1.4.17.3.13.27.4 : Appendix B
Appendix B to Subpart C of Part 429 - Sampling Plan for Enforcement
Testing of Covered Equipment and Certain Low-Volume Covered
Products
The Department will determine compliance as follows:
(a) The first sample size (n1) must be four or more units,
except as provided by § 429.57(e)(1)(ii).
(b) Compute the mean of the measured energy performance (x1) for
all tests as follows:
where xi
is the measured energy efficiency or consumption from test i, and
n1 is the total number of tests.
(c) Compute the standard deviation (s1) of the measured energy
performance from the n1 tests as follows:
(d) Compute the standard error (sx1) of the measured energy
performance from the n1 tests as follows:
(e)(1) For an energy efficiency standard (EES), determine the
appropriate lower control limit (LCL1) according to:
And use whichever is greater. Where EES is the energy efficiency
standard and t is a statistic based on a 97.5 percent, one-sided
confidence limit and a sample size of n1.
(2) For an energy consumption standard (ECS), determine the
appropriate upper control limit (UCL1) according to:
And use whichever is less, where ECS is the energy consumption
standard and t is a statistic based on a 97.5 percent, one-sided
confidence limit and a sample size of n1.
(f)(1) Compare the sample mean to the control limit.
(i) The basic model is in compliance and testing is at an end
if:
(A) For an energy or water efficiency standard, the sample mean
is equal to or greater than the lower control limit, or
(B) For an energy or water consumption standard, the sample mean
is equal to or less than the upper control limit.