
3. Guideline for each installation process
62
Header joint
① Select the reducer fitted on the diameter of the pipe.
② Braze the pipes ends with caps if the number of connected indoor unit is fewer than header
joint ports.
< Liquid side > < Gas side >
• When using A~J type of header joint, connect the header joint to
the pipe with provided reducer.
• When using K~Z type of header joint, connect the header joint to
the pipe by cutting the provided reducer properly.
• Connect the header joint in order respecting the number of the indoor unit.
• Connect the indoor unit as the highest capacity comes first.
③ Install the header joint horizontally.
- Install the header joint horizontally so that it is not facing down.
< Liquid side > < Gas side >
Incorrect installation of Y-joint and header joint cause poor oil and refrigerant
distribution between indoor units.
It may decrease the system’s performance or cause compressor failure.
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