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Ring terminal
Sleeve
Screw with special
Screw with
washer
special
washer
Ring terminal
Ring
Cable
terminal
Cable
Terminal block
WARNING
Use ring terminals and tighten the terminal screws to the specified
torques, otherwise, abnormal overheating may be occurred and possibly
cause heavy damage inside the unit.
Tightening torque
1.2 to 1.8 N • m
M4 screw
(11 to 16 lbf • in)
(Power supply / L (L1), N (L2), GND)
(12 to 18 kgf • cm)
6.2.2. Transmission cable to VRF Network
Shielded cable
(no sheath)
WARNING
Tighten the terminal screws to the specified torques, otherwise, abnor-
mal overheating may be occurred and possibly cause heavy damage
inside the unit.
Tightening torque
0.5 to 0.6 N • m
M3 screw
(4.4 to 5.3 lbf • in)
(Transmission / X1, X2)
(5 to 6 kgf • cm)
CAUTION
To peel the sheath from the lead cable, use a dedicated tool that will not
damage the conductor cable.
When installing a screw on the terminal block, do not cut the cable by
overtightening the screw. On the other hand, an under tightened screw
can cause faulty contact, which will lead to a communication failure.
6.2.3. MODBUS cable
7 mm
15 mm
(1/4 in)
(9/16 in)
7 mm
15 mm
(1/4 in)
(9/16 in)
30 mm
MODBUS connector
(1-3/16 in)
(Accessories)
Shielded cable
(no sheath)
Tightening torque for installing cables to MODBUS connector
0.22 to 0.25 N • m (1.9 to 2.2 lbf • in) (2.2 to 2.5 kgf • cm)
7. INSTALLING THE MODBUS CONVERTOR
WARNING
Always use the accessories and specified installation work parts. Check
the state of the installation parts. Not using the specified parts will cause
units to fall off, electric shock, fire, etc.
Install at a place that can withstand the weight of the unit and install
positively so that the unit will not topple or fall.
When installing this unit, make sure that there are no children nearby.
Otherwise, injury or electric shock could result.
Install a circuit breaker.
Otherwise, electric shock or fire could result.
CAUTION
Do not set the DIP switch or rotary switch of this unit except as specified
in this installation manual or the instruction manual supplied with the air
conditioner. Setting the switches other than specified will cause an ac-
cident or trouble.
Use an insulated screwdriver to set the DIP switches.
Before opening the cover of this unit, completely discharge static
electricity charged on your body. Otherwise, failure or malfunction could
result.
Do not touch the circuit board and circuit board parts directly with your
hands.
Otherwise, injury or electric shock could result.
Tightening the mounting screws too tight will damage the body of this
unit.
Be careful so that the cover does not fall after the cover screws are
removed.
Otherwise, injury could result.
En-4
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