131. In this Subdivision, “coefficient of performance” means the ratio between the energy added to the air as measured by taking into account the change in the enthalpy of the air entering and leaving the heat pump, exclusive of supplementary heat, and the total energy input to all elements of the heat pump including compressors, pumps, supply-air fans, return-air fans, outside-air fans, cooling tower fans and pumps, and the equipment control circuit, but not including supplementary heaters.
O.C. 89-83, s. 131; Erratum, 1985 G.O. 2, 3709.