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41
Instructions for Connecting Piping to Indoor Unit
1. Align the center of the two pipes that you will
connect.
Indoor unit tubing Flare nut Pipe
2.
hand.
3. Using a spanner, grip the nut on the unit tubing.
4.
tubing, use a torque wrench to tighten the
Torque Requirements table below. Loosen the
Refrigerant Piping Connection
TORQUE REQUIREMENTS
OUTER DIAMETER
OF PIPE
TORQUE
FLARE DIMEN
Ø6.35 (Ø 0.25”) 18~20(180~200kgf.cm) 8.4~8.7 (0.33~0.34”)
R0.4~0. 8
45
°
±
2
90
°
±
4
B
Ø9.52 (Ø 0.375”) 32~39(320~390kgf.cm) 13.2~13.5 (0.52~0.53”)
Ø12.7 (Ø 0.5”) 49~59(490~590kgf.cm) 13.2~13.5 (0.52~0.53”)
Ø16 (Ø 0.63”) 57~71(570~710kgf.cm) 19.2~19.7 (0.76~0.78”)
Ø19 ( Ø 0.75”) 67~101(670~1010kgf.cm) 23.2~23.7 (0.91~0.93”)
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.
4. Using a spanner, grip the body of the valve. Do
not grip the nut that seals the service valve.
Valve cover
5.
according to the correct torque values.
6.
again.
7. Repeat Steps 3 to 6 for the remaining pipe.
USE SPANNER TO GRIP MAIN BODY OF VALVE
other parts of valve.
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