1、2015 ASHRAE. All rights reserved. ERRATA SHEET FOR ANSI/ASHRAE STANDARD 103-2007 Methods of Testing for Annual Fuel Utilization Efficiency of Residential Central Furnaces and Boilers May 4, 2015 The corrections listed in this errata sheet apply to ANSI/ASHRAE Standard 103-2007. The first printing is
2、 identified on the outside back cover as “86318 6/08” and the second printing as “Product code: 86318 8/13”. Page Erratum 50 Informative Appendix C Calculation of Furnace and Boiler Comparative Average Annual Cost. Replace the current equation for burner operating hours (BOHSS) and add a new variable K4as shown below. Replace the current equation for BODSS BOHSS = 2080(0.77)(A)(QOUT/(1 + ) 2080(B) with the corrected equation BODSS = 2080(0.77)(A)(QOUT/K4)/(1 + ) 2080(B) Add the new variable K4 as defined below. where K4 = Conversion factor, 1000 Btu/kBtu or 1000 Btu per hr/kBtu per hour
