Codes & Standards - Purchase
ANSI Z21.20a-2000
Addenda 1 to ANSI Z21.20-2000, Automatic Gas Ignition Systems and Components
SKU: 2414270
Published by CSA Group
Publication Year 2000
1 pages
Withdrawn
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Product Details
Scope
This standard applies to automatic gas ignition systems and components which perform the following functions:
1) ignite the gas at the main burner(s), or at the pilot burner(s) so it can ignite the main burner(s);
2) prove the presence of either the ignition source, the main burner flame, or both; and
3) automatically act to shut off the gas supply to the main burner(s), or to the pilot and the main burner(s), when the supervised flame or ignition source is not proved. This standard covers automatic gas ignition systems and components intended primarily for use with gas appliances having inputs of 400,000 Btu per hour (117 228 W) or less per individual combustion chamber. This standard applies to automatic gas ignition systems and components for use with one or more of the following gases, natural, manufactured, mixed, liquefied petroleum and LP gas-air mixtures. This standard also applies to automatic gas ignition systems which also serve as oxygen depletion safety shutoff (ODS) systems.
This standard applies to automatic gas ignition systems and components which perform the following functions:
1) ignite the gas at the main burner(s), or at the pilot burner(s) so it can ignite the main burner(s);
2) prove the presence of either the ignition source, the main burner flame, or both; and
3) automatically act to shut off the gas supply to the main burner(s), or to the pilot and the main burner(s), when the supervised flame or ignition source is not proved. This standard covers automatic gas ignition systems and components intended primarily for use with gas appliances having inputs of 400,000 Btu per hour (117 228 W) or less per individual combustion chamber. This standard applies to automatic gas ignition systems and components for use with one or more of the following gases, natural, manufactured, mixed, liquefied petroleum and LP gas-air mixtures. This standard also applies to automatic gas ignition systems which also serve as oxygen depletion safety shutoff (ODS) systems.