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TORQUE REQUIREMENTS
Outer Diameter of Pipe
(mm)
Ø 6.35 (Ø 0.25")
Ø 9.52 (Ø 0.375")
Ø 12.7 (Ø 0.5")
Ø 16 (Ø 0.63")
Ø 19 (Ø 0.75")
DO NOT USE EXCESSIVE TORQUE
Excessive force can break the nut or damage the refrigerant piping. You must not exceed
torque requirements shown in the table above.
Instructions for Connecting Piping to Outdoor Unit
1.
Unscrew the cover from the packed valve on the side of the outdoor unit.
2.
Remove protective caps from ends of valves.
3.
Align flared pipe end with each valve, and tighten the flare nut as tightly as possible by hand.
4.
Using a spanner, grip the body of the valve. Do not grip the nut that seals the service valve.
5.
While firmly gripping the body of the valve, use a torque wrench to tighten the flare nut according to
the correct torque values.
6.
Loosen the flaring nut slightly, then tighten again.
7.
Repeat Steps 3 to 6 for the remaining pipe.
USE SPANNER TO GRIP MAIN BODY OF VALVE
Torque from tightening the flare nut can snap off other parts of valve.
AIR EVACUATION
Preparations and Precautions
Air and foreign matter in the refrigerant circuit can cause abnormal rises in pressure, which can damage
the air conditioner, reduce its efficiency, and cause injury. Use a vacuum pump and manifold gauge to
evacuate the refrigerant circuit, removing any non-condensable gas and moisture from the system.
Evacuation should be performed upon initial installation and when unit is relocated.
G
BEFORE PERFORMING EVACUATION
•
Check to make sure the connective pipes between the indoor and outdoor units are
connected properly.
•
Check to make sure all wiring is connected properly.
4
182
Tightening Torque (N•m)
18~20(180~200kgf.cm)
32~39(320~390kgf.cm)
49~59(490~590kgf.cm)
57~71(570~710kgf.cm)
67~101(670~1010kgf.cm)
Valve cover
Flare dimension(B)
(mm)
8.4~8.7 (0.33~0.34")
13.2~13.5 (0.52~0.53")
16.2~16.5 (0.64~0.65")
19.2~19.7 (0.76~0.78")
23.2~23.7 (0.91~0.93")
Flare shape
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