Power Circuit, Safety Device And Cable Requirements; Wiring Connection Example For Whole System; Leading Wire Procedure - Daikin REYQ72TTJU Installation Manual

• Connect the wire securely using designated wire and fix it with
attached clamp without applying external pressure on the terminal
parts (terminal for power wiring, terminal for transmission wiring
and ground terminal).
• If there exists the possibility of reverse-phase, lose phase, mo-
mentary blackout or the power goes on and off while the product is
operating, attach a reverse-phase protection circuit locally.
Running the product in reverse-phase may break the compressor
and other parts.

9 . 1 . Power circuit, safety device and cable requirements

• A power circuit (see the following table) must be provided for con-
nection of the unit. This circuit must be protected with the required
safety devices, i.e. a main switch, a slow blow fuse on each phase.
• When using residual current operated circuit breakers, be sure to
use a high-speed type (0.1 seconds or less) 200 mA rated residual
operating current.
• Use copper conductors only.
• Use insulated wire for the power cord.
• Select the power supply cable type and size in accordance with
relevant local and national regulations.
Phase and
REYQ Voltage Minimum circuit amp.
frequency
f3, 60Hz
72TTJU 208/230V
96TTJU f3, 60Hz 208/230V
f3, 60Hz
120TTJU 208/230V
144TTJU f3, 60Hz 208/230V
f3, 60Hz 208/230V
168TTJU
f3, 60Hz
192TTJU 208/230V 30.2A+43.0A
216TTJU f3, 60Hz 208/230V 38.0A+43.0A
f3, 60Hz
240TTJU 208/230V 38.0A+55.0A
264TTJU f3, 60Hz 208/230V 43.0A+55.0A
f3, 60Hz 208/230V 55.0A+55.0A
288TTJU
f3, 60Hz
312TTJU 208/230V 55.0A+61.9A
336TTJU f3, 60Hz 208/230V 61.9A+61.9A
f3, 60Hz
360TTJU 208/230V 43.0A+43.0A+43.0A
384TTJU f3, 60Hz 208/230V 38.0A+43.0A+61.9A
f3, 60Hz 38.0A+55.0A+61.9A
408TTJU 208/230V
f3, 60Hz
432TTJU 208/230V 55.0A+55.0A+55.0A
f3, 60Hz 208/230V 55.0A+55.0A+61.9A
456TTJU
f3, 60Hz
72TYDN 460V
96TYDN f3, 60Hz 460V
f3, 60Hz
120TYDN 460V
f3, 60Hz
144TYDN 460V
f3, 60Hz 460V
168TYDN
f3, 60Hz
192TYDN 460V 15.2A+21.1A
216TYDN f3, 60Hz 460V 21.1A+21.1A
f3, 60Hz
240TYDN 460V 21.1A+31.9A
264TYDN f3, 60Hz 460V 21.1A+31.9A
f3, 60Hz 460V 31.9A+31.9A
288TYDN
f3, 60Hz
312TYDN 460V 31.9A+36.1A
336TYDN f3, 60Hz 460V 36.1A+36.1A
f3, 60Hz
360TYDN 460V 21.1A+21.1A+21.1A
384TYDN f3, 60Hz 460V 21.1A+21.1A+36.1A
f3, 60Hz 460V 21.1A+31.9A+36.1A
408TYDN
f3, 60Hz
432TYDN 460V 31.9A+31.9A+31.9A
f3, 60Hz 460V 31.9A+31.9A+36.1A
456TYDN
19
Maximum overcurrent Transmission
protective device line selection
AWG18-16
30.2A 35A
38.0A 45A AWG18-16
50A AWG18-16
43.0A
55.0A 70A AWG18-16
61.9A 70A AWG18-16
35A+50A AWG18-16
45A+50A AWG18-16
45A+70A AWG18-16
50A+70A AWG18-16
70A+70A AWG18-16
70A+70A AWG18-16
70A+70A AWG18-16
50A+50A+50A AWG18-16
45A+50A+70A AWG18-16
45A+70A+70A AWG18-16
70A+70A+70A AWG18-16
70A+70A+70A AWG18-16
AWG18-16
15.2A 20A
21.1A 25A AWG18-16
21.1A 25A AWG18-16
31.9A 40A AWG18-16
36.1A 40A AWG18-16
AWG18-16
20A+25A
25A+25A AWG18-16
25A+40A AWG18-16
25A+40A AWG18-16
40A+40A AWG18-16
40A+40A AWG18-16
40A+40A AWG18-16
25A+25A+25A AWG18-16
25A+25A+40A AWG18-16
25A+40A+40A AWG18-16
40A+40A+40A AWG18-16
40A+40A+40A AWG18-16

9 .2 . Wiring connection example for whole system

1 1
2 2
4
3
1 Power supply
2 Main switch
3 Fuse or circuit breaker
4 Outdoor unit
5 COOL/HEAT selector
6 Remote controller
7 Indoor unit
8 BS unit
This image is intended as an example only. Please follow local and
national electrical code.
NOTE
• Make sure the low voltage wiring (i.e. for the remote controller, between
units) and the power wiring do not pass near each other, keeping them at
least 2 in. (51 mm) apart.
Proximity may cause electrical interference, malfunctions, and breakage.
• Be sure to connect the power wiring to the power wiring terminal block
and secure it as described in 9.5. Power wiring connection procedure.
• Transmission wiring should be secured as described in 9.4. Trans-
mission wiring connection procedure.
• Secure wiring with clamp such as insulation lock ties to avoid con-
tact with piping.
• Shape the wires to prevent the structure such as the control box
cover deforming. And close the cover firmly.
• All field wiring is to be procured on site.

9 .3 . leading wire procedure

• The power wiring and ground wiring are passed out from the power
wiring hole on the front (knock hole).
• The transmission wiring is passed out from the wiring hole (knock
hole) on the front of the unit.
REYQ72T
1
2
4
3
1 Electric wiring diagram printed on the back of the control box cover.
2 Knockout hole
3 Power line
4 Transmission line
8
5
3
7
6
REYQ96-168T
1
2
3
4
3P362438-3H English