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SMMS-i
Installation Manual
SMMS-i
Installation Manual
◆Power supply wire connection
1. Insert the power supply wire through the cutout on the side of the electric parts box and connect the power supply
wire to the power supply terminal block and the earth line to the earth screw. After that, fix the power supply wire
with the 2 cord clamps.
2. Be sure to use round-type crimping terminals for power connection.
Also, apply insulating sleeves to the crimping parts. Use a driver of appropriate size to fix the terminal screws.
Power supply terminal
block
Cord clamps
Communication
terminal block
Power supply wires
Earth screw
Cord clamp
Communication
wires
L1 L2 L3 N
L1 L2 L3
N
10mm or more
Earth line
Power supply wire
Screw size and tightening torque
◆Communication wire connection
Get the communication wire through the cutout on the side of the electric parts box and connect it to the communication wire
terminals, then fix it with the communication cable clamp.
Screw size and tightening torque
Screw size
Tightening torque
(N•m)
Power supply terminal M6 2.5 to 3.0
Earth screw M8 5.5 to 6.6
Screw size
Tightening torque
(N•m)
Communication wire terminal M3.5 0.80 to 0.96
U1 U2 U3 U4 U5 U6
U5, U6: Communication wiring between outdoor units
U
3, U4: Central control device
U
1, U2: Communication wiring between Indoor/Outdoor unit
TO
INDOOR
UNIT
TO
CENTRAL
CONTROL
LER
TO
OUTDOOR
UNIT
41-EN 42-EN
+00EH99871699_01EN.book Page 21 Thursday, August 26, 2010 4:41 PM