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

19 | Electrical installation

19.2 To route and fix the transmission wiring

Installer and user reference guide
116
▪ 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 REYQ30 by using the REYQ8, REYQ10, and REYQ12.
▪ Minimum circuit ampacity of the REYQ8=16.1 A
▪ Minimum circuit ampacity of the REYQ10=22.0 A
▪ Minimum circuit ampacity of the REYQ12=24.0 A
Accordingly, the minimum circuit ampacity of the
REYQ30=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.
5~12 HP
b a
a Transmission wiring (possibility 1)
b Transmission wiring (possibility 2)
2
, maximum length is 1000 m. If the total
14~20 HP
c
c
c
A
d
b
A
(a)
(a)
. Fix to pipe insulation with tie wraps.
c
c
A
d
a
REYQ8~20+REMQ5U7Y1B
VRV IV+ heat recovery
4P561154-1A – 2020.10