Scope 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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1.1 Scope 1.1.1 This standard applies to newly produced, large automatic storage water heaters having input ratings above 75,000 Btu per hour (21 980 W), instantaneous water heaters, circulating water heaters, including booster water heaters (see Part

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1.1 Scope 1.1.1 This standard applies to propane and natural gas-fired unattended portable type infra-red heaters (see Definitions, Part III), hereinafter referred to as heaters with gas inputs up to and including 400 000 Btuh (117.23 kW). 1.1.2 T

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Update #2 was published as notification that this is now a National Standard of Canada This PDF includes Update #2 1. Scope 1.1 This Standard specifies the method for determining the energy factor for oil-fired storage tank water heaters. 1.2

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1.1 Scope 1.1.1 This standard applies to newly-produced direct gas-fired circulating heaters (see Part IV, Definitions) of 400,000 Btu (117 228 W) or less, hereinafter referred to as heaters, constructed entirely of new, unused parts and materials an

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