Service Guide

24
2. Remove 2 gaskets under the cross-ow fan.
3. Clean the burr on the surface of fracture to avoid the power wire from
being scratched after removing the virtual opening of the outgoing line
slot on the case by hands in indoor power-on process.
Please refer to the attached manual of outdoor units.
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.
Proceed the are tube connecting operation to connect all the refrigerant tubes.
Model MVAW007~009 MVAW012~018 MVAW024~030
Tubing
Size (mm)
Gas pipe Ø3/8" Ø1/2" Ø5/8"
Liquid pipe Ø1/4" Ø1/4" Ø3/8"
Tubing
Material
Phosphor deoxybronze seamless pipe (TP2) for air conditioner
When the mounting plate is xed side bar and lintel
• Fix to side bar and lintel a mounting bar, Which is separately sold, and then fasten the plate to the xed mounting
bar.
• Refer to the previous article, "When the mounting plate is rst xed" for the position of wall hole.
• Dual wrenches must be used in the connection of
indoor unit tubing.
• Mounting torque refers to the right table
Tubing Permissible Length & Height Difference
Tubing Materials & Specications
Refrigerant Filling Amount
Connecting Procedures of Refrigerant Tubing
Outer
Diameter of
Tubing (mm)
Mounting
Torque (N-m)
Increase
mounting
Torque (N-m)
Ø1/4" 11.8(1.2kgf-m) 13.7(1.4kgf-m)
Ø3/8" 24.5(2.5kgf-m) 29.4(3.0kgf-m)
Ø1/2" 49.0(5.0kgf-m) 53.9(5.5kgf-m)
Ø5/8" 78.4(8.0kgf-m) 98.0(10.0kgf-m)
Ø3/4" 98.0(10.0kgf-m) 117.7(12.0kgf-m)