Valve cover
Page 33
2. Tighten the flare nut as tightly as possible by hand.
3. Using a spanner, grip the nut on the unit tubing.
4. While firmly gripping the nut on the unit tubing, use
a torque wrench to tighten the flare nut according to
the torque values in the Torque Requirements table
below. Loosen the flaring nut slightly, then tighten
again.
TORQUE REQUIREMENTS
Outer Diameter of Pipe
(mm)
Tightening Torque
(N·m)
Flare Dimension (B)
(mm)
Flare shape
Ø 6.35 (Ø 0.25")
18~20 (180~200 kgf·cm)
8.4~8.7 (0.33~0.34")
Ø 9.52 (Ø 0.375")
32~39 (320~390 kgf·cm)
13.2~13.5 (0.52~0.53")
Ø 12.7 (Ø 0.5")
49~59 (490~590 kgf·cm)
16.2~16.5 (0.64~0.65")
Ø 16 (Ø 0.63")
57~71 (570~710 kgf·cm)
19.2~19.7 (0.76~0.78")
Ø 19 (Ø 0.75")
67~101 (670~1010 kgf·cm)
23.2~23.7 (0.91~0.93")
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
