Be extremely careful not to dent or damage the piping while bending it away from the unit. Any
dents in the piping will aect the unit’s performance.
Step 4: Prepare refrigerant piping
The refrigerant piping is inside an insulating
sleeve attached to the back of the unit. You must
prepare the piping before passing it through the
hole in the wall. Refer to the Refrigerant Piping
section of this manual for detailed
instructions on pipe ﬂaring and ﬂare torque
requirements, technique, etc.
1. Based on the position of the wall hole relative
to the mounting plate, choose the side from
which the piping will exit the unit.
2. If the wall hole is behind the unit, keep the
knock-out panel in place. If the wall hole is to
the side of the indoor unit, remove the plastic
knock-out panel from that side of the unit.
(See Fig. 3.3). This will create a slot through
which your piping can exit the unit. Use
needle nose pliers if the plastic panel is too
dicult to remove by hand.
3. Use scissors to cut down the length of the
insulating sleeve to reveal about 15 cm (6 in)
of the refrigerant piping. This serves two
• To facilitate the Refrigerant Piping
• To facilitate Gas Leak Checks and enable
you to check for dents
4. If existing connective piping is already
embedded in the wall, proceed directly to
the Connect drain hose step. If there is no
embedded piping, connect the indoor unit’s
refrigerant piping to the connective piping
that will join the indoor and outdoor units.
Refer to the Refrigerant Piping Connection
section of this manual for detailed instructions.
5. Based on the position of the wall hole
relative to the mounting plate, determine the
necessary angle of your piping.
6. Grip the refrigerant piping at the base of the
7. Slowly, with even pressure, bend the piping
toward the hole. Do not dent or damage the
piping during the process.
NOTE ON PIPING ANGLE
Refrigerant piping can exit the indoor unit from
four dierent angles:
• Left-hand side
• Left rear
• Right-hand side
• Right rear
Refer to Fig. 3.4 for details.