Installing and connecting the assembly pipe of the indoor unit
1. Cut out the appropriate knock-out piece (A, B, C) on the rear of the
indoor unit unless you connect the pipe directly from the rear.
2. Smooth the cut edges.
3. Remove the protection caps of the pipes and connect the
assembly pipe to each pipe. Tighten the nuts first with your hands,
and then with a torque wrench, applying the following torque:
Connect indoor and outdoor units with field-supplied copper pipes by means of flare connections. Use insulated seamless
refrigeration grade pipe only, (Cu DHP type according to ISO1337), degreased and deoxidized, suitable for operating pressures
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used.
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A short pipe is already fitted to the air conditioner. You may
need to extend the pipe using the assembly pipe (optional).
The connection procedure for the refrigerant pipe varies
according to the exit position of the pipe when facing the wall:
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B
A
C
Outer diameter
[inch (mm)]
Torque
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Torque
LHGtDN
ø 1/4” (6.35)
10.3 to 13.3 (14 to 18)
140 to 180
ø 3/8” (9.52)
25.1 to 31.0 (34 to 42)
350 to 430
ø 1/2” (12.70)
36.1 to 45.0 (49 to 61)
500 to 620
ø 5/8” (15.88)
50.2 to 60.5 (68 to 82)
690 to 830
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4. Cut off the remaining foam insulation.
5. If necessary, bend the pipe to fit along the bottom of the indoor unit.
Then pull it out through the appropriate hole.
X
The pipe should not project from the rear of the indoor unit.
X
The bending radius should be 3.94 inch (100 mm) or more.
6. Pass the pipe through the hole in the wall.
7. For further details on how to connect to the outdoor unit and evacuate the air, refer to page 11.
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t %0/058"--615)&1*1&$0//&$5*0/
All refrigerant pipe connection must be easy accessible and serviceable.
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refer to page 15 for further details.
CAUTION
English-10
