HTW IX21D5 Serie Manuel D'installation page 63

SPLIT 1X1 IX21D5
4.4 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.
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 difficult to
remove by hand.
3. Use scissors to cut down the length of the insulating sleeve to reveal about 15cm (6in) of the refrigerant
piping. This serves two purposes:
• To facilitate the Refrigerant Piping Connection process
• 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 bend.
7. 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 f o r details.
Panel
Fig. 3.3
CAUTION
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.
INSTALLATION MANUAL
4. INDOOR UNIT INSTALLATION
Fig 3.4.
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