Fujitsu AU G18LVLB Series Design & Technical Manual page 159
1 phase type simultaneous multi system
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Also See for AU G18LVLB Series:
- Service instruction (119 pages) ,
- Design & technical manual (67 pages) ,
- Service instruction (122 pages)
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(3) If the diameter of the connection piping is too large, use a pipe cutter to cut as shown below.
Cut in the center of the connections
(4) 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.
Twin connection type
+15°
-15°
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• Place the branch pipe in a horizontal position as far as possible. Only place the branch pipe as shown below during
unavoidable circumstances.
Twin connection type
Horizontal
position
• When connecting the main piping, do not bend it near the connection section.
If the main pipe must be bent due to unavoidable circumstances, ensure that the linear section is 10 times or more
than the diameter of the connection piping.
Twin connection type
to indoor unit
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ØD
Straight pipe =
(D x 10) and above
Main pipe
R
to outdoor unit
• Always use a pipe cutter.
• After cutting, remove the burr and clean the cut section.
locally purchased
Triple connection type ( Liquid )
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Triple connection type
( Liquid )
Horizontal
position
Triple connection type ( Liquid )
o t
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ØD
Straight pipe =
(D x 10) and above
Main pipe
R
to outdoor unit
- (04-17) -
Triple connection type ( Gas )
+
1
° 5
1 -
° 5
o t
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Triple connection type
( Gas )
Horizontal
position
Triple connection type ( Gas )
o t
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ØD
Main pipe
R
to outdoor unit
+
1
° 5
1 -
° 5
o
r o
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n
t i
to indoor unit
to indoor unit
Straight pipe =
(D x 10) and above
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