Home HME030356N - Prepare the Refrigerant Piping; Connect the Drain Hose; Note on Drain Hose Placement; Note on Piping Angle

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Step 4: Prepare the 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. This will create a slot through which
your piping can exit the unit. Use needle nose

remove by hand.
Knock-out Panel
3. 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.
NOTE ON PIPING ANGLE
Refrigerant piping can exit the indoor unit from

side, left rear, and right rear.
WARNING
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.
Step 5: Connect the drain hose
By default, the drain hose is attached to the
left-hand side of the unit (when you’re facing
the back of the unit). However, it can also be
attached to the right-hand side. To ensure
proper drainage, attach the drain hose on
the same side where your refrigerant piping
exits the unit. Attach the drain hose extension
(purchased separately) to the end of the drain
hose.
• 
tape to ensure a good seal and to prevent leaks.
• For the portion of the drain hose that will
remain indoors, wrap it with foam pipe
insulation to prevent condensation.
• 
of water into the drain pan to make sure that

NOTE ON DRAIN HOSE PLACEMENT
Make sure to arrange the drain hose according to

Installation
CORRECT
Make sure there are no
kinks or dents on the drain
hose to ensure proper
drainage.
NOT CORRECT
Kinks on the drain
hose will create
water traps.
NOT CORRECT
Kinks on the drain
hose will create
water traps.
NOT CORRECT
Do not place the
end of the drain
hose in water or
in containers that
collect water. This
will prevent proper
drainage.