Kweller, E.; Palla, R. L.
view article (10.004545)
Test Method and Calculation Procedure for Determining Annual Efficiency for Vented Household Heaters and Furnaces Equipped With Modulating-Type Thermostat Controls.
National Bureau of Standards, Washington, DC
Department of Energy, Washington, DC,
NBSIR 82-2497,
May 1982,