FORCED AIR HEATING SYSTEM Diagram locates fuel saving devices and other heating elements. ... Chimney A. Automatic damper B. Blastgate C. Reduced orifice D. Two-stage valve E. Electronic ignition Percent ... load (ccf) (percent) installation i Space heating load here taken to indicate the volume which would have been consumed given no modification. ... heat homes, is sufficient for removing the by-products of coal combustion, but is grossly oversized for natural gas furnaces.
|Author||:||United States. Congress. House. Committee on Interstate and Foreign Commerce. Subcommittee on Energy and Power|