19
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Electrical installation
Installer and user reference guide
108
RWEYQ8~14T9Y1B
VRV IV water-cooled system air conditioner
4P452191-1B – 2020.10
19.1.5 Safety device requirements
The power supply must be protected with the required safety devices, i.e. a main
switch, a slow blow fuse on each phase and an earth leakage protector in
accordance with the applicable legislation.
For standard combinations
Selection and sizing of the wiring should be done in accordance with the applicable
legislation based on the information mentioned in the table below.
Model
Minimum circuit
ampacity
Recommended
fuses
RWEYQ8T9
15.5 A
20 A
RWEYQ10T9
16.4 A
20 A
RWEYQ12T9
19.4 A
25 A
RWEYQ14T9
22.3 A
25 A
RWEYQ16T9
31.0 A
32 A
RWEYQ18T9
31.9 A
32 A
RWEYQ20T9
32.7 A
35 A
RWEYQ22T9
35.8 A
40 A
RWEYQ24T9
38.9 A
40 A
RWEYQ26T9
41.7 A
50 A
RWEYQ28T9
44.6 A
50 A
RWEYQ30T9
49.1 A
50 A
RWEYQ32T9
52.2 A
63 A
RWEYQ34T9
55.3 A
63 A
RWEYQ36T9
58.3 A
63 A
RWEYQ38T9
61.2 A
63 A
RWEYQ40T9
64.0 A
80 A
RWEYQ42T9
66.9 A
80 A
For all models:
▪
Phase and frequency: 3N~ 50 Hz
▪
Voltage: 380~415 V
▪
Transmission line section: 0.75~1.25 mm
2
, maximum length is 1000 m. If the total
transmission wiring exceeds these limits, it may result in communication error.
For free 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.
