MrCool Advantage Series - Refrigerant Piping Preparation

mrcool.com11
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 aring
and are 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. 4.4 ). This will
create a slot through which your piping can exit the
unit. Use needle nose pliers if the plastic panel is
too dicult remove by hand.
Step 4: Prepare Refrigerant Piping
3. Use scissors to cut down the length of the insulating
sleeve to reveal about 6" (15cm) 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.
Refrigerant piping can exit the indoor unit from
fourdierentangles:
• Left-hand side
• Left rear
• Right-hand side
• Right rear
Refer to Fig. 4.5 for details.
NOTE ON PIPING ANGLE:
CAUTION
Be extremely careful not to dent or damage the piping while bending them away from the unit. Any dents in the
pipingwillaecttheunit'sperformance.
INDOOR UNIT INSTALLATION
4
4.4 Refrigerant Piping Preparation