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 Washington Administrative Code (Last Updated: November 23, 2016)
 Title 51. Enterprise Services, Department of (Building Code Council)
 Chapter 51-11C. State Building Code adoption and amendment of the 2015 edition of the International Energy Conservation Code, Commercial.

  Section 51-11C-403235. Table C403.2.3(5)—Minimum efficiency requirements—Gas- and oil-fired boilers.  

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  • Table C403.2.3(5)
    Minimum Efficiency Requirements—Gas- and Oil-Fired Boilers
    For SI:
    1 British thermal unit per hour = 0.2931 W.
     
     
     
     
     
    Ec
    =
    Combustion efficiency (100 percent less flue losses).
     
    Et
    =
    Thermal efficiency. See referenced standard document for detailed information.
     
     
     
     
    a
    These requirements apply to boilers with rated input of 8,000,000 Btu/h or less that are not packaged boilers and to all packaged boilers. Minimum efficiency requirements for boilers cover all capacities of packaged boilers.
    b
    Maximum capacity minimum and maximum ratings as provided for and allowed by the unit's controls.
    c
    Includes oil-fired (residual).
    [Statutory Authority: RCW 19.27A.025, 19.27A.160, and 19.27.074. WSR 16-03-072, § 51-11C-403235, filed 1/19/16, effective 7/1/16. Statutory Authority: RCW 19.27A.020, 19.27A.025 and chapters 19.27 and 34.05 RCW. WSR 13-04-056, § 51-11C-403235, filed 2/1/13, effective 7/1/13.]
RCW 19.27A.025, 19.27A.160, and 19.27.074. WSR 16-03-072, § 51-11C-403235, filed 1/19/16, effective 7/1/16. Statutory Authority: RCW 19.27A.020, 19.27A.025 and chapters 19.27 and 34.05 RCW. WSR 13-04-056, § 51-11C-403235, filed 2/1/13, effective 7/1/13.