Checks After Completion Of Work - Daikin RZQ18PVJU Installation Manual

How to Insulation tube.
• Use the insulation tube large to cover the power supply
wiring.
Use the insulation tube small to cover the transmission
wiring.
• Joint the insulation tube with the tape and cut off the tube
sticking out of the outdoor unit.
tape
Insulation tube large-1
or
Insulation tube small-1
CAUTION
• After fi nishing the electric wiring work, confi rm 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 fi gure.
Attach insulation sleeve
Round pressure terminal
Connect same- It is forbidden
thickness wiring to connect two
to one side.
to both sides.
Make sure to observe the following items. If they are not
observed, abnormal heat may be generated by slack in electric
wires, etc.
• For wiring, use the designated power wire and connect
fi rmly, 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.
Tightening torque (ft·lbf)
M5 (Power supply and ground terminal block)
M4 (Shielded ground)
M3.5 (Transmission wiring terminal block)
English
Insulation tube large-2
or
Insulation tube small-2
Cut off the sticking out
of the outdoor unit.
Power wire
It is forbidden to
connect wiring of
different thicknesses.
1.76 ~ 2.15
0.87 ~ 1.06
0.58 ~ 0.72
7-4 Transmission wiring connection procedure
• If an excessive force is applied while connecting a cable
to the terminal block on the PC board, the PC board may
be damaged.
IN/D OUT/D
F1 F2 F1 F2
L1 L2
Use the conductor
(2 wire) (no polarity)
CAUTION
• For low-noise operation, it is necessary to install the optional
"External control adaptor for outdoor unit".
For details, see the installation manual attached to the
adaptor.
Caution on the wiring length between units
Make sure to observe the restrictions below. If they are
not observed, transmission error may occur.
Maximum wiring length: 3280 ft.
Cautions on the wiring between units
• Never connect 208-230V to the terminal block for the trans-
mission wiring.
Doing so will break the entire system.
• The transmission wiring from the indoor unit must be con-
nected to the F1/F2 (TO IN/D UNIT) terminals on the PC
board in the outdoor unit.
∗ Make sure to use sheathed two-core cables of AWG18-16 in
the wiring shown above.
∗ All cables used in the wiring between the units should
be procured on the site.
8. CHECKS AFTER COMPLETION OF
WORK
After completing the work, make sure to confi rm the
following items:
1. Connection of drain piping and removal of transport fi ttings:
Refer to "5. CAUTIONS ON INSTALLATION".
2. Connection of power supply wiring and tightening of screws:
Refer to "7-3 Power supply wiring connection proce-
dure".
3. Connection of transmission wiring and tightening of screws:
Refer to "7-4 Transmission wiring connection proce-
dure".
4. Freezing connection of refrigerant piping
Refer to "6. REFRIGERANT PIPING WORK".
IN/D OUT/D
F F F F
1 2 1
of sheathed wire
F1 F2
Indoor unit
2
14