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Refrigerant Piping
22 Outside Unit
How to Use the Shut-Off Valve
Use hexagonal wrenches 4mm or 6mm (1/6 inch or 1/4 inch)
• Opening the valve
1. Place the hexagon wrench on the valve bar and turn counter-clockwise.
2. Stop when the valve bar no longer turns. It is now open.
• Closing the valve
1. Place the hexagon wrench on the valve bar and turn clockwise.
2. Stop when the valve bar no longer turns. It is now closed.
<Liquid pipe>
Direction to open
<Gas pipe>
Direction to open
1. Use the following materials for refrigerant piping.
• Material: Seamless phosphorous deoxidized copper pipe
• Wall thickness : Comply with the relevant local and national regulations for the designed pressure
3.8 Mpa(551.1 psi). We recommend the following table as the minimum wall thickness.
2. Commercially available piping often contains dust and other materials. Always blow it clean with a dry inert
gas.
3. Use care to prevent dust, water or other contaminants from entering the piping during installation.
4. Reduce the number of bending portions as much as possible, and make bending radius as big as possible.
5. Always use the branch piping set shown below, which are sold separately.
Caution
ARBLN01621 ARBLN03321 ARBL054 ARBL057 ARBL1010
ARBLN07121 ARBLN14521 ARBL104 ARBL107 ARBL2010
Y branch
Header
4 branch 7 branch 10 branch
6.35(1/4) 9.52(3/8) 12.7(1/2) 15.88(5/8) 19.05(3/4) 22.2(7/8) 25.4(1) 28.58(1-1/8) 31.8(1-1/4) 34.9(1-3/8) 38.1(1-1/2) 41.3(1-5/8)
0.8(0.03) 0.8(0.03) 0.8(0.03) 0.99(0.03) 0.99(0.03) 0.99(0.03) 0.99(0.03) 0.99(0.03) 1.1(0.04) 1.21(0.04) 1.35(0.05) 1.43(0.05)
Minimum thickness
[mm(inch)]
Outer diameter
[mm(inch)]
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