Daikin VRV IV+ RXYTQ8U7YF User Manual

18 | Electrical installation
Installer and user reference guide
94
RXYTQ
VRV IV+ heat pump for high ambient temperatures
4P561157-1B – 2021.11
Model Minimum circuit
ampacity
Recommended
fuses
RXYTQ16 31.0A 40A
What? Case1 Case2
Phase and frequency 3N~50Hz 3N~60Hz
Voltage 380-415V 400V
Transmission line
section
(a)
0.75~1.25mm
2
(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.
18.2 To route and fix the transmission wiring
Transmission wiring can be routed through the front side only. Fix it to the upper
mounting hole.

Daikin VRV IV+ RXYTQ8U7YF Specifications

General

Brand	Daikin
Model	VRV IV+ RXYTQ8U7YF
Category	Heat Pump
Language	English