Mitsubishi Electric MFZ-KA09NA Installation Manual page 7

2=10. DRAIN PiPiNG
° The drain hose should point downward for easy drain. (Fig. 1)
©
Fig. 1
Drain _ I]H_ Drain hose
_--hose 27 9/16 in
/ Hard viny,
chloride
70cm or pipe I.D. 1-3/16 in.
ore' / HU < omm,
Ir_] Sof hose LH_IL_'_ ................................... 1
I I I.D. 19/32 in. ha u] rut J I Insert |
I I 15 rnrn _'_IH _1 I ...... ly
Differen q F \_
diameter joint
Fig. 2 Fig. 3
[Do not make drain i#jpj_g, as shown below, i
2_ Do not raise
Water
leakage leakage
Waving
• If the drain hose provided with the indoor unit is too short, connect it with a field-supplied drain hose (I). (Fig. 2)
. When connecting the drain hose to a hard vinyl chloride pipe, be sure to insert it securely into the pipe. (Fig. 3)
• If the extension drain hose has to pass through a room, be sure to wrap it with insulation (field-supplied).
. When routing the drain piping, make sure that the drain hose (1) is routed as shown. (Fig. 4)
. Insert the drain hose all the way to the base of the drain pan (end connection). (Fig. 5)
Make sure that the catch of the drain hose is securely hooked onto the projection on the hose fitting of the drain pan.
• After connecting the drain hose, be sure to pull the hose to confirm that it is connected securely.
@
Tip of drain
_ hosedipped
. _ inwater
Waler_J _J At least
leakage _ .... Ditch 1-31/32 in.
(50 ram)
gap
The catch should face up.
/M '
_Q Onduit
Fig. 4
Make sure to hook the catch. ]_ Drain hose
p itis
* This projection is located behind
Fig. 5 the hose fitting when viewing the
fitting from the front of the unit
" Route the drain hose diagonally below the con-
necting pipes.
. Make sure that the drain hose is not routed up-
ward and that there are no waves in the hose.
. Do not pull the hose when applying the tape.
. Route the piping so that it does not project past
the rear of the indoor unit.
Piping Refrigerant L ]
tape piping
Piping bent
outward Push
Drain hose
II
2-11 .EMBEDDING THE INDOOR UNIT IN A WALL
• When installing a grating, use a grating with narrow upper and lower horizontal bars so that the airflow from the upper and lower air outlets does not contact the
bars. If the horizontal bars will block the lower air outlet, use a stand, etc., to adjust the height of the indoor unit. If the upper or lower air outlet is blocked, the air
conditioner will not be able to cool or warm the room well.
• Do not block the receiver with the grating. Otherwise, the grating will interfere with the remote controller signal and significantly reduce the distance and area (angle)
from which the signals can be received.
. Use a grating with vertical bars, etc., that has at least 75% open area. If the grating has horizontal bars or if the open area is less than 75%, performance could be
reduced.
. When the indoor unit is embedded in a wall (builbin), the time it takes for the room temperature to reach the set temperature will increase.
Backboard
\
C
3-15116(100)
3-15116(100) Upper air outlet or more
or more / . _..----_
F-_ / Recilver 2-3/8(6C q/
I [ / / 1-1/32(26). |
E .......................................................................................................................................................
I LZ ................................................................. // I
/ y
Lower air outlet Partition board
_, Partition board
v 04
"_ _ O _
o
31/32-1-3/8
(20-35)
O
E
LO
Grating
/
!
EMBEDDED INDOOR UNIT SETTING (MUST BE PERFORMED)
. When embedding the indoor unit in a wall, restrict the movement of the horizontal vane
for the upper air outlet so that it only operates horizontally. Cut
. If this setting is not performed, heat will build up in the wall and the room will not be //
cooled or warmed properly.
. Cut the wires on the left and right sides of JRFBL using a pair of nippers, etc., as shown
below.
i i
Cut the wires on both ends.
Indoor unit
Control board
inch(mm)
Partition board
Backboard
Indoor temperature thermistor
Cut the JRFBL wires.
En-6