Carrier 53QPCT18H-708F Installation Manual page 20

INDOOR UNIT INSTALLATION (Cont.)
INSTALLATION STEPS OF INDOOR UNIT (Cont.)
NOTES
a. Fasten the wall hang bracket to the wall with
all the 5 (Five) screws supplied with unit.
This correct fixation will prevent motion of
bracket after fixation, which can cause noisy
unit operation.
b. The wall hang bracket must be leveled in both
horizontal and vertical directions after fixation
without tilting to the right or lift to avoid water
dropping from the unit onto the floor. See Fig.
c. Install the wall hang bracket so that three is
no gap between it and the wall to avoid
vibrations and sound during unit operation.
d. Check that the wall hang bracket does not
move.
This can cause noise during operation.
Step (6): Electrical wiring of indoor unit
Step (7): Form refrigerant piping, drain
hose and electrical cables of
indoor unit.
• As per the selected location of wall hole,
form and tie together with vinyl tape the
refrigerant piping, electrical cables and
drain hose.
The drain hose should be at the bottom.
• For left piping fit the refrigerant piping,
electrical cords and drain hose into the
recess at back of indoor unit.
NOTES
a. Do not remove the flare nuts from the indoor
unit piping until the piping is ready for
connection with refrigerant piping lines.
b. Do not crush or kink the indoor unit piping.
Avoid tight bending with a bending radius
less than 100 mm.
c. Do not bend the same part of the pipe too
often to avoid pipe damage.
d. Bend pipes carefully to avoid flattening or
obstructing them if the pipes are bent in
correctly, the indoor unit may be unstable on
the wall.
e. Carefully arrange pipes so that pipes do not
stick out of the wall hang bracket of the
indoor unit.
X
An Uneven Installation
See chapter (18) : Connecting Electrical Wiring.
Indoor unit piping
Connection cord
18
Left Piping
Drain hose
Bind with vinyl tape
Indoor unit
piping
Connection
cord
Drain hose