Haier AB072MRERA - Page 520

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(4) Lead the connection tubing (liquid pipe and gas pipe) through the hole into the wall, or connect piping and wiring of
indoor unit (check the number of wiring terminals of indoor and outdoor units and connect terminals with the same number
and color), and then put the connection tubing and the connecting line through from the inside wall for the connection with
outdoor unit.
Tubing Permissible Length & Height Difference
Please refer to the attached manual of outdoor units.
Tubing Materials & Specications
Model AS072-162MGERA AS182-242MGERA
Tubing Size
(mm)
Gas pipe Φ12.7 Φ15.88
Liquid pipe Φ6.35 Φ9.52
Tubing
Material
Phosphor deoxy bronze seamless pipe (TP2) for air conditioner
Refrigerant Filling Amount
Add the refrigerant according to the installation instruction of outdoor unit. The addition of R410A refrigerant must
be performed with a measure gage to ensure the specied amount or compressor failure can be caused by lling
too much or little refrigerant.
Connecting Procedures of Refrigerant Tubing
Proceed the are tube connecting operation to connect all the refrigerant tubes.
■ Dual wrenches must be used in the connection
of indoor unit tubing.
■ Mounting torque refers to the right table
Outer
diameter of
tubing (mm)
Mounting
torque (N.m)
Increase
mounting
torque (N.m)
Φ6.35 11.8 (1.2kgf.m) 13.7 (1.4kgf.m)
Φ9.52 24.5 (2.5kgf.m) 29.4 (3.0kgf.m)
Φ12.70 49.0 (5.0kgf.m) 53.9 (5.5kgf.m)
Φ15.88 78.4 (8.0kgf.m) 98.0 (10.0kgf.m)
Φ19.05 98.0 (10.0kgf.m) 117.7 (12.0kgf.m)
Air outlet join
Right coupling
Heat insulating material
Tube
Signal wire
Tube plate
Drain pipe
Drain pipe
E
Left coupling
W
W
Refrigerant oil
Refrigerant oil
Joint Nut