---
kind: "section"
citation: "10 C.F.R. § 429.22"
title: "10"
number: "429.22"
heading: "Direct heating equipment."
url: "https://uscodex.org/cfr/10/429.22"
---

# §429.22. Direct heating equipment.

- (a) **Sampling plan for selection of units for testing.**
  - (1) The requirements of [§ 429.11](/cfr/10/429.11.md) are applicable to direct heating equipment; and
  - (2)
    - (i) For each basic model of direct heating equipment (not including furnaces) a sample of sufficient size shall be randomly selected and tested to ensure that—
      - (A) Any represented value of estimated annual operating cost, energy consumption or other measure of energy consumption of a basic model for which consumers would favor lower values shall be greater than or equal to the higher of:

        (1) The mean of the sample, where:

        Or,

        (2) The upper 97 1/2 percent confidence limit (UCL) of the true mean divided by 1.05, where:

      - (B) Any represented value of the fuel utilization efficiency or other measure of energy consumption of a basic model for which consumers would favor higher values shall be less than or equal to the lower of:

        (1) The mean of the sample, where:

        Or,

        (2) The lower 97 1/2 percent confidence limit (LCL) of the true mean divided by 0.95, where:

    - (ii) In calculating the measures of energy consumption for each unit tested, use the design heating requirement corresponding to the mean of the capacities of the units of the sample.
- (b) **Certification reports.**
  - (1) The requirements of [§ 429.12](/cfr/10/429.12.md) are applicable to direct heating equipment; and
  - (2) Pursuant to [§ 429.12(b)(13)](/cfr/10/429.12.md?p=b-13), a certification report shall include the following public product-specific information: Direct heating equipment, the annual fuel utilization efficiency (AFUE) in percent (%), the mean input capacity in British thermal units per hour (Btu/h), and the mean output capacity in British thermal units per hour (Btu/h).

## Notes

### Amendments

[76 FR 12451, Mar. 7, 2011; 76 FR 24768, May 2, 2011, as amended at 76 FR 38292, June 30, 2011]

### Authority

Authority: 42 U.S.C. 6291-6317; 28 U.S.C. 2461 note.

### Source

Source: 76 FR 12451, Mar. 7, 2011, unless otherwise noted.

### Amendments

[76 FR 12451, Mar. 7, 2011; 76 FR 24768, May 2, 2011, as amended at 76 FR 38292, June 30, 2011]