Daikin FDYB-KA Series, Engineering Data

Page: 60 / 66

ED41-016B Installation
FDYB-KA Series 59
15.1.7 Electric Wiring Work
C : 3PN00281-18T-7
•
All field supplied parts and materials and electric works must conform to local codes.
•
Use copper wire only.
•
For electric wiring work, refer also to "WIRING DIAGRAM"attached to the unit body.
•
For remote controller ( , ) wiring details, refer to the installation manual attached to this indoor unit.
•
All wiring must be performed by an authorized electrician.
•
A circuit breaker capable of shutting down power supply to the entire system must be installed.
•
In case of 71 model, refer to the installation manual attached to the outdoor unit for the size of power supply electric wire connected to the outdoor unit,
the capacity of the circuit breaker and switch, and wiring instructions.
•
The resistance of the grounding must not exceed 100
Ω
.
•
Ground the air conditioner.
Do not connect the earth wire to gas or water pipes, Iightning conductor or telephone earth wire. Incomplete grounding may cause electric shocks.
· Gas pipe – Ignition or explosion may occur if the gas leaks.
· Water pipe – Hard vinyl tubes are not effective grounds.
· Lightning conductor or telephone ground wire. – Electric potential may rise abnormally if struck by a lightning bolt.
•
Refer to Table 2 for specifications of field wire.
NOTE) 1. Shows only in case of protected pipes. Use HO7RN-F in case of no protection or the wire of YZW type in GB5013.2.
2. Shield wire materials may be used for transmission wiring, and they comply with EMI (EN55014). (Refer to NOTE 2 of WIRING EXAMPLE.)
3. Use double–insulation wire for the remote controller or run wires through a wall or conduit so that the user cannot come in contact
with them.
4. Run transmission wiring between the indoor and outdoor units through a conduit to protect against external forces, and feed
the conduit through the wall together with refrigerant piping.
〈
Methods of wiring units and connecting remote controller cords
〉
(Refer to Fig. 14)
•
Wiring the units (Power supply wiring and each wiring)
Remove the control box lid indicated in the figure. Next, connect them matching to the power supply terminal board (4P) inside. (Please connect the earth
line surely.) In doing this, fully secure the cords using clamp.
•
Remote controller cords
Connect the cords to the remote controller terminal board (2P). (No polarity), In doing this fully secure the cords using clamp.
〈
PRECAUTIONS
〉
•
Do not clamp remote controller cords together with wires connecting the units together. Doing so may cause malfunction.
•
Remote controller cords and wires connecting the units should be located at least 50 mm from other electric wires. Not following this guideline may result
in malfunction due to electrical noise.
Observe the notes mentioned below when wiring to the power supply terminal board. Precautions to be taken for power supply wiring.
(Use a round crimp–style terminal for connection to the power supply terminal board. In case it cannot be used due to unavoidable reasons, be sure to
observe the following instructions.)
•
Do not connect wires of different gauge to the same power supply terminal.
(Looseness in the connection may cause overheating.)
Between indoor units
Unit–Remote controller
Wire
H05VV–U4G
(NOTE 1)
Vinyl cord with sheath or
cable (2 wire) (NOTE 2)
Size (mm
2
)
2.5
0.75 – 1.25
Length
—
Max. 500 m
Table 2
1 6 7