Aux and Emergency CPH settings
Aux and Emergency CPH settings5 For gas or oil furnaces of less than 90% efficiency. 1 For steam or gravity systems 3 For hot water systems & furnaces of over 90% efficiency 9 For electric furnaces [Other cycle rate options: 2, 4, 6, 7, 8, 10, 11 or 12 CPH] … electric Furnace Sizing – [...]
