Drill the Wall Hole for CYB-20 Ceiling Cassette Indoor Unit PipingUpdated a day ago

Introduction

This article explains how to drill the wall hole for the piping of CYB-20 Ceiling Cassette systems.

The hole being drilled in the wall is intended for the drainage and refrigerant piping. When drilling the wall hole, ensure to avoid wires, plumbing, and other sensitive components. 

Steps

1. Determine the wall hole's location based on the intended position of the outdoor unit. 

2. Drill a hole through the wall using a 3-1/2 inch (90 mm) core drill. Make sure the hole is angled slightly downward so that the exterior opening is 1/2 inch (12 mm) lower than the interior opening. This slope ensures proper water drainage. 

3. Insert the protective wall cuff into the hole. This protects the edges of the hole and helps create a seal during the final installation steps.