Mitsubishi Electric MFZ-KA09NA Installation Manual page 6

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2=8. CONNECTING WIRES FOR iNDOOR UNIT
Note: When the indoor unit is powered from the outdoor unit, depending on local code, a disconnect switch needs to be installed to a power supply circuit.
1 ) Remove the electrical cover.
2) Remove the conduit plate.
3) Attach the conduit pipe to the conduit plate with the lock nut. The indoor/outdoor unit connecting wire (A) appearing from the inside of conduit pipe should be less
than 7/8 in. (23 mm). (Fig. 1)
4) Process the end of ground wire (Fig. 2). Connect it to the ground terminal of the electrical parts box.
5) Process the end of indoor/outdoor unit connecting wire (A) (Fig. 2). Attach it to the terminal block. Be careful not to make mis-wiring. Attach the wire to the terminal
block securely so that its core cannot be seen, and no external force affects the connecting section of the terminal block.
6) Firmly tighten the terminal screws. After tightening, verify that the wires are tightly fastened.
7) Reinstall the conduit plate.
8) Reinstall the electrical cover.
Remark:
* A disconnect switch (15A
MAX) is required.
Check the local code.
** Use a ring tongue termF
nal in order to connect a
ground wire to terminal.
Power supply
208/230 VAC,
1 phase 2 wires.
60 Hz
INDOOR UNIT
-, Grounding
! Termina_ block._ terminaF*
I_!
i i / Disconnect
" 4 _t - switch*
208/230 VAC S'mi_ i
1 phase, 60 Hz
OUTDOOR UNIT
............. '-------i---i: ....
Ground Grouding terminaF*
_ Conduit plate
LeSs than 7/8 in,
(23 ram)
k nut
nduit pipe
Fig. 1
19/32 in,
1_3/8 in. __Z_ (15 ram)
(35 ram)
Lead__ Fig. 2
Screw
Electrical cover
Terminal block
Electrical box
Lock nut
Conduit plate
Grounding
terminal
pipe
Indoor/outdoor unit
connecting wire (A)
Connect wires to the appropriate terminals
For future servicing, leave some slack in the connecting wires.
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2-9. CONNECTING AN INTERFACE (MAC=397/399 IF-E, option) TO THE AiR CONDITIONER
, Connect an interface to the indoor control P.C. board of an air conditioner
with a connecting cable.
, Cutting or extending the connecting cable of the interface results in defects
in connecting. Do not bundle the connecting cable together with power
supply cord, indoor/outdoor connecting wire, and/or earth wire. Keep as
much distance as possible between the connecting cable and those wires.
, The thin part of the connecting cable should be stored and placed where
customers cannot touch it.
Thin part of the connecting cable.
Place this part where customers
Room air cannot touch it.
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Indoor control CN105
P.C. board
Main body of an interface
*_@ Connector
Thick part of the connecting cable
1 ) Remove the electrical cover.
2) Join the connecting cable to CN105 on the indoor control P.C. board.
3) Hook the connecting cable as shown in the figure.
4) Attach the cable clamp provided with Interface to the thick part of the connecting cable with a screw
4x16 as shown in the figure.
5) Reinstall the electrical cover. Be careful not to catch the thin part of the connecting cable in the cover.
Fix the connecting cable at the prescribed position ]
securely.
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Incorrect installation may cause electric shock, fire,
and/or malfunction
,CN105
4) Cable clamp
Cord clamp
3) Hook
En-5