The Cedrus Sauna manual outlines assembly for infrared cedar models (2000-5000 series), detailing a two-person, panel-based setup requiring a level surface with 4-inch clearance. Key operational steps include a 10-minute pre-heat, control panel adjustments for temperature and time, and troubleshooting for errors like ER3 (sensor/wiring) or R05 (high-limit). You can view the manual at FSI Owner's Manual . Cedrus Sauna 4000 ER3 Error: Troubleshooting Help & Guide