10 CFR 431.246 - Energy conservation standards and their effective dates.

Regulations last checked for updates: May 01, 2025

Title 10 - Energy last revised: Apr 21, 2025

View all text of Subpart N [§ 431.241 - § 431.246]

§ 431.246 - Energy conservation standards and their effective dates.

A unit heater manufactured on or after August 8, 2008, shall:

(a) Be equipped with an intermittent ignition device; and

(b) Have power venting or an automatic flue damper. An automatic vent damper is an acceptable alternative to an automatic flue damper for those unit heaters where combustion air is drawn from the conditioned space.

[70 FR 60418, Oct. 18, 2005, as amended at 71 FR 71374, Dec. 8, 2006]

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

source: 64 FR 54141, Oct. 5, 1999, unless otherwise noted.

cite as: 10 CFR 431.246