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
Connection
section of this manual for detailed
instructions on pipe flaring and flare torque
requirements, technique, etc.
• Based on the position of the wall hole relative
to the mounting plate, choose the side from
which the piping will exit the unit.
• 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
difficult to remove by hand.
BE EXTREMELY CAREFUL NOT TO DENT OR DAMAGE THE PIPING WHILE
BENDING THEM AWAY FROM THE UNIT. ANY DENTS IN THE PIPING WILL AFFECT
THE UNIT’S PERFORMANCE.
• Use scissors to cut down the length of the
insulating sleeve to reveal about 15cm/6
"
of the refrigerant piping. This serves two
purposes:
a) To facilitate the
Refrigerant Piping
Connection
process.
b) To facilitate gas leak checks and enable you
to check for dents.
• 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.
• Based on the position of the wall hole relative to
the mounting plate, determine the necessary
angle of your piping.
• Grip the refrigerant piping at the base of the bend.
• Slowly, with even pressure, bend the piping
towards 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 different angles:
• Left-hand side
• Left rear
• Right-hand side
• Right rear
Refer to
FIG. 3.4
for details.
CAUTION
Knock-out
Panel
FIG. 3.4
FIG. 3.3
bm
