50WCA018DAA3AA-A
50 = Packaged WSHP Unit
WC = 1-Stage (Compact)
A = Horizontal, Side Filter Access. Front Left Water Conn
018 = 1.5 Ton 
D = Horizontal, Left Return, Right Discharge
A = UPM/50 VA
A = No Refrig Circuit Options, Non-Coated Copper Air Coil
3 = 208/230-1-60
A = No Sound, Standard Insulation
A = No Hydronic Options
- = No Options
A = Initial Release

• 50PCH018ECC3ECC1 - 1.5-Ton Horizontal Water Source Heat Pump R410A 208/230V-1, Left Return, Right Discharge