UL Standard for Safety Commercial/Industrial Gas and/or Oil-Burning Assemblies with Emission Reduction Equipment
|Publication Date:||27 October 2006|
These requirements cover fuel burning heating appliances that are provided with or are intended for installation with NOx emissions reduction equipment.
These requirements apply to factory-built equipment having inputs of more than 400,000 Btu per hour (117 KW) (firing gas), and/or more than 3.0 gph (11.4 L/h) (firing oil), per individual combustion chamber and/or oil or combination gas-oil burning equipment which require flame failure and other safeguards and which are intended primarily for commercial and industrial installation.
Equipment covered by these requirements may be operated without a competent attendant being constantly on duty at the burners while the burners are in operation.
The heating appliance shall be suitable for installation in accordance with the National Fire Protection Association Standards for the Installation of Oil-Burning Equipment (National Fire Codes, Vol. 1), ANSI/NFPA 31, and/or National Fuel Gas Codes (IAS/A.G.A. Z223.1-1996), NFPA 54 and the National Electrical Code, NFPA 70.