ANSI Z21.64 : 90 ADDENDA A 92
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
FURNACES, DIRECT VENT CENTRAL (INCLUDES SUPPLEMENT ANSI Z21.64A-1986),
03-15-2022
01-12-2013
Covers automatically operated direct vent central furnaces of gas-fired forced air type not regulated by Energy Policy and Conservation Act of 1975 and National Energy Conservation Policy Act of 1978
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