Install the Condensate Drain Hose for Outdoor UnitsUpdated a day ago

Introduction

This article explains how to install the condensate drain hose for outdoor units. 

Installing the drain hose is optional; it is only required if you choose not to use the default bottom drainage port. 

If a drain hose is required, install the drain joint into the outdoor unit's base pan hole before mounting.

This step is unnecessary if the unit is mounted on a slab. 

Caution

• Ensure the drain line installation complies with all local and national codes and regulations. 
• Verify that the drain line is insulated to prevent condensation and potential water damage. If it is not, insulate it properly. 
• If the drain line is bent or installed incorrectly, water may leak and cause a water-level switch malfunction. 
• Do not pull the drain line forcefully. This could disconnect it. 

Notes

• When using an extended drain line, tighten the indoor connection with an additional protection tube to prevent accidental disconnection.
• The drain line should slope downward at a gradient of at least 1/100 to prevent water from flowing back into the air conditioner.
• To prevent air bubbles, keep the drain line level or slightly tilted up by 3 inches (less than 75 mm).
• Installation requires a polyethylene tube (exterior diameter = 1 in / 25 mm), which can be obtained at a local hardware store or dealer.

Install the Condensate Drain Hose

Plan the Drain Line Layout

Before beginning the installation, plan the drain line layout and connection.

Cut the Drain Line (If Needed)

If necessary, cut the drain line to fit your layout and connection.

Insulate the Drain Line (If Needed)

Verify that the drain line is insulated to prevent condensation and potential water damage. If it is not, insulate it properly. Insufficient insulation may allow dew to form due to low condensate temperatures, resulting in potential water damage. 

Insulate the drain line before beginning the connection, excluding the joint sections. These will be insulated at the end of the procedure. 

Ensure the insulation material is fitted tightly with no gaps. Do not over-tighten the insulation material. This may compress the air out of the material, causing poor insulation and early aging.

The insulation material must be made of flame-retardant material. Select a material that complies with local regulations.

The thickness of the insulation material must be more than ⅜ of an inch (10 mm).

Apply specialized adhesive to the insulation seams, then secure them with tape. Ensure the tape is at least 2 inches (51 mm) wide and applied firmly to prevent condensation. 

Connect the Drain Hose

1. Connect the condensate drain hose to the drain joint at the bottom of the unit. 

2. Ensure the water drains to a suitable location.