Daikin FXFQ25SVM Installation Manual page 13

The lengths of remote controller wiring and transmission
wirings are as follows:
(1) Remote controller wiring (indoor unit - remote controller) ...Max. 500 m
(2) Transmission wirings .................. Total wiring length 2000 m
• Outdoor unit - Indoor unit ..................Max. 1000 m
• Outdoor unit - BS unit .......................Max. 1000 m
• BS unit - Indoor unit ..........................Max. 1000 m
• Indoor unit - Indoor unit ....................Max. 1000 m
NOTE
1. Shows only in case of protected piping. Use H07RN-F in
case of no protection.
2. Vinyl cord with sheath or cable (Insulated thickness : 1 mm
or more)
8-4 WIRING CONNECTION METHOD
CAUTION FOR WIRING
• The indoor units in the same system can be connected to the
power supply from one branch switch. How ever, selection of
branch switch, branch over current circuit breaker and wiring
size must be according to applicable legislation.
• For connection to the terminal block, use a ring type crimp
style terminals with insulation sleeve or insulate the wirings
properly.
Insulation sleeve
Ring type crimp
style terminals
• If the above is not available, make sure to observe the
following requirements.
Connection of 2 Connection of 2
wirings of same wirings on one
size must be side is
carried out on prohibited.
both sides.
(Abnormal heating may occur if the wirings are not tightened
securely.)
• Use the required wirings, connect them securely and fix
these wirings securely so that external force may not apply to
the terminals.
• Use a proper screw driver for tightening the terminal screws.
If an improper screw driver is used, it may damage the screw
head and a proper tightening cannot be car ried out.
• If a terminal is over tightened, it may be damaged.
Refer to the table shown below for tightening torque of
terminals.
Terminal block for remote controller
and transmission wirings
Terminal for power supply
Earth terminal
• Do not carry out soldering finish when stranded wirings
are used.
WARNING
• When wiring, form the wirings orderly so that the control box
lid can be securely fastened. If the control box lid is not in
place, the wirings may float up or be sandwiched by the box
and the lid and cause electric shocks or a fire.
3P335596-2D English
Wiring
Connection of
wirings of
different sizes is
prohibited.
Tightening torque (N·m)
0.88 ± 0.08
1.47 ± 0.14
1.47 ± 0.14
< Power supply wiring · earth wiring · remote controller
wiring · transmission wiring connecting method >
• Power supply wiring, earth wiring
Pull the wiring through the wiring penetrating hole (high
voltage). After connecting the power supply wiring to [L ·
N] on the power supply terminal block (X2M) and the earth
wiring to the earth terminal, clamp them near the terminal
block using the attached clamp (4). (Refer to page 13)
• Remote controller wiring, transmission wiring
Pull the wiring through the wiring penetrating hole (low
voltage). After connecting the remote controller wir ing to [P1
· P2] and the transmission wiring to [F1 · F2] on the terminal
block (X1M), clamp them near the terminal block using the
attached clamp (4). (Refer to page 13)
• After connecting the wiring, make sure to stick the sealing
material (Small) (13) to the wiring penetrating hole. (Refer to
Fig. 24)
(It is to prevent water from entering into the indoor unit.)
CAUTION
• Never connect the power supply wiring to the terminal block
for remote controller/transmission wiring (X1M).
If may damage the total system.
• Do not connect the remote controller/transmission wiring
to the wrong terminal bock.
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