From Table PD-4 a 48 ton unit capacity with standard capacity evaporator coil at 80 DB/67 WB, 95 F outdoor air temperature and 18,000 total supply cfm is 675 MBh total and 488 MBh sensible. Thus, a nominal 48 ton unit with standard capacity evaporator coil is selected. Step 2 — Evaporator Coil Entering Conditions Mixed air dry bulb temperature