After reviewing the mechanical installation project, the locations of the indoor and outdoor units were determined. The under-ceiling pipe route was planned, and potential clashes with other mechanical and electrical lines were checked. Pipe support and mounting points were identified in advance.

When the refrigerant copper pipes arrived on site, their diameters were verified according to the project specifications. The pipes were then cut to the required lengths. After cutting, burrs were removed using a reaming tool to ensure a smooth internal surface and prevent damage to the system.

The liquid and gas lines were installed separately and mounted to the ceiling using appropriate brackets and hangers. Care was taken to maintain proper bending radii and alignment. After installation, the pipes were covered with elastomeric rubber insulation to prevent heat loss and condensation. Finally, all insulation joints were tightly wrapped with insulation tape to ensure continuity and airtightness.