CSA ANSI Z21.11.2B-2004
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Addenda 2 to ANSI Z21.11.2-2002, Gas-Fired Room Heaters – Volume II, Unvented Room Heaters
Details test and examination criteria for unvented heaters for use with natural, manufactured and mixed gases, liquefied petroleum gases, and LP gas-air mixtures. Such heaters are limited to Maximum input ratings of 40,000 Btu per hour.
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