How To Install Rheia Our library of videos offers guidance and instruction on the Rheia system and its installation process. Learn about jobsite preparation, installation and balancing, below. All Preparation Rough In Trim Out Balancing Jobsite Materials Parts Inspection Making Part Connections Ceiling Boot Installation High Sidewall & Pass-Through Boots Duct Connections Pulling Ducts Open Web and I-Joist Routing Continuing a Duct Run Ceiling and Wall Boot Drywall Cutting Diffuser Installation Damper Setting and Adjustments Manifold Duct Connection Fabrication of Manifold Holes