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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.
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 picture below).
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 of the refrigerant
piping. This serves two purposes:
1) To facilitate the Refrigerant Piping Connection process
2) 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.
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.
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