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Multi V Wall-Mounted Indoor Unit
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Indoor Unit Piping Flare Nut Field-
Installed
Piping
Pipe Size (in. O.D.) Outside Diameter (mm) Torque (ft-lbs.)
1/4 6.35 13.0 - 18.0
3/8 9.52 24.6 - 30.4
1/2 12.7 39.8 - 47.7
5/8 15.88 45.4 - 59.3
3/4 19.05 71.5 - 87.5
Table 17: Torque Wrench Tightening.
Figure 55: Piping Installation When Piping is on the Right Side.
Piping Installation When Piping is on
the Right Side
See the Electrical System Installation section for information on how to
connect the communication / connection (power) wiring from the outdoor
unit.
1. Align the center of the refrigerant piping and corresponding con-
nection as shown.
2. Place a couple of drops of refrigerant oil on outside of the flare
before assembling. Do not add any contaminants. Tighten
the flare nut initially by hand.
3. Finish tightening the flare nut with a torque wrench until the
wrench clicks. Follow torque guidelines in the table below.
When tightening the are nut with a torque wrench, ensure the direction
for tightening follows the arrow on the wrench.
4. Bundle the refrigerant piping, drain hose, and communication /
connection (power) cable together. Ensure that the drain hose is
located at the bottom of the bundle.
• If using a conduit for the power wiring / communications cable,
see below.
Positioning the drain hose at the top of the bundle can cause conden-
sate to overow from the drain pan in the inside of the indoor unit.
Right Side Piping
Piping
Connection
Cable
Tape
Drain Hose
Figure 56: Indoor Unit Connection.
Wall Mounted Indoor Units
SJ/SK Frame
PIPING INSTALL
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