Fujitsu AUYG18LVLB Design & Technical Manual page 211

¢ Installation procedure for Twin type and Double twin type
CAUTION
• Do not mistake the direction of connection.
• Set the piping from the branch pipe to the indoor units to be the same length. (Max. difference: 8
m)
• Shorten the length of the piping after branching as much as possible. (Max. length: 20 m)
1. Check the direction of connection.
2. If the diameter of the connection piping is too large, use a pipe cutter to cut as shown below.
3. Check the positioning of branch pipes.
If it is placed horizontally, keep it within ±15°. Otherwise, it will not separate the refrigerant
evenly, causing a reduction in performance.
3-4. Branch pipes
Outdoor unit
Cut in the center of the connections
locally purchased
Indoor unit
Indoor unit
• Always use a pipe cutter.
• After cutting, remove the burr and clean the cut section.
+15°
-15°
o t n i d o r o u n t i
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3. Pipe installation