Installation Manual For Indoor Unit
11. Refrigerant pipe
[The air side pipe, liquid side pipe must be faithfully heat insulated, if no heat insulation, it may cause water leakage.]
The outdoor unit has been charged with refrigerant.
When connect the pipe to the unit or dismantling the pipe from the unit, please follow the figure shown, use spanner and torque spanner together.
When connect cone nut, the inner side and outside of cone nut should paste with refrigerant oil. Use hand to twist
Referring to Table I to confirm the fasten torque. (too tight may damage nut leading to leakage)
Check if the connection pipe leaks, then do heat insulation treatment, as below figure shown. 
Only use seal cushion to bind the joint part of air pipe and heat insulation parts.
Paste the refrigerant oil here
Torque spanner
Spanner
Pipe joint
Cone nut
Middle size seal cushion (accessory)
(Use seal cushion to bind the pipe joint)
Clamp
Heat insulation (accessory)
(for liquid pipe)
Heat insulation (accessory) Gas pipe (for gas pipe)
Liquid pipe
80 | 510 |
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Liquid pipe | Gas pipe | Electric box |
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| Upper |
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Air inlet |
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| 310 | Air outlet |
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Drain hose connection mouth | 530 | Down side | 30 |
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VP25 PVC pipe |
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Specification of pipe | Tighten torque | Cone dimension |
| Cone |
(mm) |
| A (mm) |
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9.52 | 3270~3990 N.cm | 12.0~12.4 | 45 | 2 |
(333~407 kgf.cm) |
| R0.4~0.8 | ||
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| 90 | 0.5 | ||
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15.88 | 6180~7540 N.cm |
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| A |
18.6~19.0 |
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(630~770 kgf.cm) |
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19.05 | 9720~11860 N.cm | 22.9~23.3 |
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(990~1210 kgf.cm) |
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| 20 |
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