I Need model #er and the estimated max and min of BTU for a furnace, the only information I have is off the Heating model plate Dual L/1 L/2 Heater amps 36.2/40 Min Ampacity 53.8/58.5 and heater amp for the L/3 L/4 is 18.1/20.0 Min ampacity 22.7/25.0 Max overcurrent protection 25/25 Heat package in this unit EHK15AKB2 Supply circuit 280/230 volts. AND on the evaporater coil model Plate #er is this: Product #er FSM2X3000A1. & Model #er FSM2x3000A. Serial #er A070867877. Manufacturing date FEB 2007. Any help out there?