Samsung RD080HRXGB Installation Manual page 31

 Header joint
1. Select the reducer fitted on the diameter of the pipe.
Pipe
To outdoor unit
< Liquid side >
2. Braze the pipes ends with caps if the number of connected indoor unit is fewer than header
joint ports.
Connection
in order
Reducer
< Liquid side >
• W hen using A~J type of header joint, connect the header joint to
the pipe with provided reducer.
CAUTION
• W hen using K~Z type of header joint, connect the header joint to
the pipe by cutting the provided reducer properly.
• C onnect the header joint in order respecting the number of the indoor unit.
• C onnect 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.
Reducer Branch joint
Should be
horizontal
Pipe
Should be
horizontal
±15°
or less
< Liquid side >
Note 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.
Reducer
Pipe
To indoor unit
To outdoor unit
Connection
in order
Reducer
Blocked the port of
header joint
±10°
or less
Should be
horizontal
Reducer
Pipe
To indoor unit
< Gas side >
Blocked the port of
header joint
< Gas side >
10~15mm
or more
Should be
horizontal
Should be
horizontal
< Gas side >
installing the unit _31
±15°
or less
±10°
or less