To Route And Fix The Transmission Wiring - Daikin VRV IV Q+ Series Installer And User Reference Manual

19 | Electrical installation

19.2 To route and fix the transmission wiring

Installer and user reference guide
112
Model
RXYQQ28
RXYQQ30
RXYQQ32
RXYQQ34
RXYQQ36
RXYQQ38
RXYQQ40
RXYQQ42
For all models:
▪ Phase and frequency: 3N~ 50 Hz
▪ Voltage: 380~415 V
▪ Transmission line section: 0.75~1.25 mm
transmission wiring exceeds these limits, it may result in communication error.
For non-standard 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 RXYQQ30 by using the RXYQQ18, and RXYQQ12.
▪ Minimum circuit ampacity of the RXYQQ18 =35.0 A
▪ Minimum circuit ampacity of the RXYQQ12=24.0 A
Accordingly, the minimum circuit ampacity of the
RXYQQ30=35.0+24.0=59.0 A
Multiply the above result by 1.1: (59.0 A×1.1)=64.1 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 Recommended
ampacity
55.0 A
59.0 A
62.0 A
66.0 A
70.0 A
76.0 A
81.0 A
84.0 A
2
, maximum length is 1000 m. If the total
VRV IV Q+ series heat pump
fuses
63 A
80 A
80 A
80 A
80 A
100 A
100 A
100 A
RXYQQ8~20U7Y1B
4P546229-1A – 2020.10