Came to job to replace 2 ton ac system. We recovered the old refrigerant. And removed case coil and condenser. Installed new ton and a half Coleman condenser and coil. We hooked up line sets installed new easy trap We pressure tested the system and evacuated it below 500 microns and charged with 410A refrigerant. We fabricated and sealed a new metal transition for the case coil. Installed fusible disconnect with 20 amp fuses and wired unit. Everything is operational at this time. We installed a model 400 aprilaire humidifier to the hot air furnace. Ran 6-in bypass from humidifier to supply. Ran quarter inch line for water feed. Checked for leaks wired and insured everything is operational at this time