YMGI: Your Modern Green Idea
YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!
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8. Connection of drainage branch pipe to the standpipe or horizontal pipe of drainage main pipe
The horizontal pipe cannot be connected to the vertical pipe at the same height. It should be connected using the method
shown below:
NO.1: Attach the 3-way connection of the drainage pipe joint as shown in illustration 1.
NO.2: Attach the drain elbow as shown in the second illustration 2.
NO.3: Attach the horizontal pipe as shown in illustration 3.
Precautions When Doing Riser Piping Work
1. Make sure that heat insulation work is executed on the following 2 spots to prevent any possible water leakage
due to condensation.
2. Connect the drain hose to the drain lift pipe, and insulate them.
3. Connect the drain hose to the drain outlet on the indoor unit, and tighten it with the clamp.
4. Make sure the pipe has a downward gradient of 1/100 or more for the drain pipe. To accomplish this, mount
supporting brackets at an interval of 3.25-5 ft (39-60 in.).