To Route And Fix The Transmission Wiring - Daikin VRV IV+ RXYTQ8U5YF Installer And User Manual

18 | Electrical installation

18.2 To route and fix the transmission wiring

Installer and user reference guide
94
Model
RXYTQ16
What?
Phase and frequency
Voltage
Transmission line
(a)
section
(a) Maximum length is 1000 m. If the total transmission wiring exceeds these limits, it
may result in communication error.
For multi combinations
Calculate the recommended fuse capacity.
Formula Calculate, by adding the minimum circuit amps of each used unit
(according to the table above), multiply the result by 1.1 and
select the next higher recommended fuse capacity.
Example Combining the RXYTQ30 by using the RXYTQ8, RXYTQ10, and
RXYTQ12.
▪ Minimum circuit ampacity of the RXYTQ8=16.1 A
▪ Minimum circuit ampacity of the RXYTQ10=22.0 A
▪ Minimum circuit ampacity of the RXYTQ12=24.0 A
Accordingly, the minimum circuit ampacity of the
RXYTQ30=16.1+22.0+24.0=62.1 A
Multiply the above result by 1.1: (62.1 A×1.1)=68.3 A, so the
recommended fuse capacity would be 80 A.
NOTICE
When using residual current operated circuit breakers, be sure to use a high-speed
type 300 mA rated residual operating current.
Transmission wiring can be routed through the front side only. Fix it to the upper
mounting hole.
Minimum circuit
ampacity
31.0 A
Case 1
3N~ 50 Hz
380-415 V
0.75~1.25 mm
VRV IV+ heat pump for high ambient temperatures
Recommended
fuses
40 A
Case 2
3N~ 60 Hz
400 V
2
RXYTQ
4P561157-1B – 2021.11