nstalled Carrier gas system for game room. Installed propane conversion kit. Installed new supply and return plenums and sealed all connections with mastic air lock. Reused zoning equipment and thermostats. Flipped orientation of system for better access. Replaced secondary drain pan. Rebuilt and insulated primary and secondary drain lines. Cleared, treated and verified drain operation. Pressure tested and pulled a vacuum on the copper line set. Replaced disconnect and whip for outdoor system. Weighed in charge to meet manufacturers specifications. Replaced supply plenum for system above garage and sealed all connections with mastic air lock.