En-10
75
95
10
100
43
73
199
125
Fig. A Knockout position
Fig. B Detail of knockout position
(bottom)
Fig. C Detail of knockout position
(front)
(Unit: mm)
(Unit: mm)
Knockout
hole
Knockout hole
5. 3. 2. Removing the pinch pipe
WARNING
Remove the pinch pipe only when the internal gas is completely drained as shown
on the below instructions.
If gas still remains inside, the piping may crack if you melt the brazing
fi
ller metal of
the junction area with a burner.
Before connecting the piping, remove the pinch pipe in accordance with the following
instructions:
1) Verify that the liquid side and gas
side 3-way valves are closed.
3-way valve
Pinch pipe
2) Cut the end of the liquid side and gas
side pinch pipe and vent the gas inside
the pinch pipe.
End of pinch pipe
3) After all the gas is vented, melt the
brazing
fi
ller metal on connecting
part using a torch and remove the
pinch pipe.
5. 3. 3. Pipe connection
CAUTION
Seal the pipe route hole with putty (
fi
eld supply) such that there are no gaps.
Small insects or animals that are trapped in the outdoor unit may cause a short circuit
in the electrical component box.
To prevent pipe damage; do not make sharp bends.
Bend the pipe at a radius of 70mm or greater.
Do not bent pipe many times at same part to prevent break.
After completing all the pipe connection by brazing, perform the indoor unit pipe con-
nection with a
fl
are joint.
When removing the pinch pipe or brazing the joint pipe, carry out the work while
cooling down the 3-way valve suf
fi
ciently.
• Braze the joint pipe onto the 3-way valves at the liquid and gas side.
Install the joint pipe appropriately so that it can be connected easily with the main
pipe.
• Braze the joint pipe at the liquid and gas side with the main pipe.
* Be sure to supply nitrogen when brazing.
Fig. A
Liquid pipe
(Field supply)
Joint pipe
(Accessory)
To indoor unit
Knockout hole
Gas pipe
(Field supply)
joint pipe
(Field supply)
Fig. B
joint pipe
(Field supply)
Joint pipe
(Accessory)
Knockout hole
5. 4. Multiple connections
CAUTION
• When
connecting
multiple
(maximum
3)
units, be sure to install the unit with the
largest capacity nearest to the indoor unit.
For example) AJ
126LALBH (Outdoor Unit1) + AJ
126LALBH (Outdoor Unit2) +
AJ
090LALBH (Outdoor Unit3)
• When connecting multiple units, set the unit with the largest capacity as the master
unit, and the rest as the slave units.
(Refer to 7. Field Setting)
• When connecting multiple units, use the optional outdoor unit branch kit.
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