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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.
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.
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
for details.
Fig. 3.3
Fig. 3.4
Knock-out Panel
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Step 5:
Connect drain hose
By default, the drain hose is attached to the left-
hand side of unit (when you’re facing the back
of the unit). However, it can also be attached to
the right-hand side.
1.
To ensure proper drainage, attach the drain
hose on the same side that your refrigerant
piping exits the unit.
2.
Attach drain hose extension (purchased
separately) to the end of drain hose.
3.
Wrap the connection point firmly with Teflon
tape to ensure a good seal and to prevent
leaks.
4.
For the portion of the drain hose that will
remain indoors, wrap it with foam pipe
insulation to prevent condensation.
5.
Remove the air filter and pour a small amount
of water into the drain pan to make sure that
water flows from the unit smoothly.
NOTE ON DRAIN HOSE
PLACEMENT
Make sure to arrange the drain hose
according to
Fig. 3.5
.
DO NOT
kink the drain hose.
DO NOT
create a water trap.
DO NOT
put the end of drain hose in
water or a container that will collect
water.
PLUG THE UNUSED DRAIN HOLE
To prevent unwanted leaks you must plug
the unused drain hole with the rubber plug
provided.
CORRECT
Make sure there are no
kinks or dent in drain
hose to ensure proper
drainage.
NOT CORRECT
Kinks in 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.
NOT CORRECT
Kinks in the drain hose
will create water traps.
Fig. 3.5
Fig. 3.6
Fig. 3.7
Fig. 3.8
