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e-CFR data is current as of August 11, 2020 |
Title 10 → Chapter II → Subchapter D → Part 431 → Subpart N → §431.246 |
Title 10: Energy
PART 431—ENERGY EFFICIENCY PROGRAM FOR CERTAIN COMMERCIAL AND INDUSTRIAL EQUIPMENT
Subpart N—Unit Heaters
§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]