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12
7-3 Power supply wiring connection procedure
WARNING
• Never connect power supply wiring to the terminal block for remote
controller wiring as this could damage the entire system.
Install a ground fault circuit interrupter.
• It is obliged to install a ground fault circuit interrupter to prevent elec-
tric shock and fire accident.
CAUTION
• After finishing the electric wiring work, confirm that all the wirings are
connected securely.
〈〈
Precautions when laying power wiring
〉〉
• Two electric wires of different thickness cannot be connected to the
power terminal block.
(Slack in the electric wires may generate abnormal heat.)
• Use round pressure terminals with insulting sleeve for connection to
the power terminal block.
If such terminals are not available for unavoidable reasons, connect
an electric wire of the same thickness to each side as shown in the
figure.
• For wiring, use the designated power wire and connect firmly, then
secure to prevent outside pressure being exerted on the terminal
board.
• Use an appropriate screwdriver for tightening the terminal screws.
A screwdriver with a small head will strip the head and make proper
tightening impossible.
• Over-tightening the terminal screws may break them.
• See the table below for tightening torque for the terminal screws.
Model
Phase and
frequency
Voltage
Max. Overcurrent
Protective device
Min. Circuit
Amps.
RZQ30PVJU9
~ 60Hz
208/230V
30A
27A
RZQ36PVJU9
RZR36PVJU
RZQ42PVJU9
RZR42PVJU
Screw
Remove it and open
the cover.
Control box
Terminal block
Stop valve
mounting plate
Knockout hole
Power supply wiring
(including ground wire)
or transmission wiring.
Power supply wiring
(including ground wire)
or transmission wiring.
Forward
Sideways
Backward
Knockout hole
Make sure to observe the following items. If they are not observed,
abnormal heat may be generated by slack in electric wires, etc.
Tightening torque (ft·lbf)
M5
(Power supply and ground terminal block)
1.76 ~ 2.15
M4
(Shielded ground)
0.87 ~ 1.06
M3.5
(Transmission wiring terminal block)
0.58 ~ 0.72
L 2
L 1
Cut off the insulation
tube sticking out of the
outdoor unit.
Terminal block (X2M)
Transmission wiring
(To X2M [TO IN/ D
UNIT](F1, F2))
Insulation tube (Small)
(accessory)
Cut off the insulation
tube sticking out of the
outdoor unit.
Insulation tube (Large)
(accessory)
Clamp (accessory)
Ground wire
(Yellow/Green)
Stop valve
mounting plate
Terminal
block (X1M)
Connecting power
supply wiring
Power wire
Round pressure terminal
Attach insulation sleeve
Connect same-
thickness wiring
to both sides.
It is forbidden to
connect two to
one side.
It is forbidden to
connect wiring of
different thicknesses.
01_EN_3PN07193-7H.fm Page 12 Monday, December 27, 2010 4:30 PM
