This document introduces the installation method of EDUS 39 - 606A - N outdoor unit, including center of gravity, REFNET pipe system, REFNET pipe, installation and other contents.
The document serves as an engineering data sheet and installation manual for the Daikin VRV-S AC system. It details specific procedures for installing outdoor units, including safety considerations, location selection, and refrigerant piping configurations using the proprietary REFNET Pipe System.
Key sections cover the layout examples of branch fittings (joints and headers), material specifications for copper pipes and insulation, and step-by-step instructions for connecting field piping to the unit's inlet/outlet ports. The guide also includes procedures for airtight testing, vacuum drying, electrical wiring, and post-installation checks regarding refrigerant concentration safety.
The insulation must be at least 1/2 inch or more in thickness.
The insulation for the gas pipe must have a heat resistance of 250°F or more.