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Electrical installation
Installer and user reference guide
115
RYYQ+RYMQ+RXYQ
VRV IV+ heat pump
4P546228-1C – 2021.11
Model
Minimum circuit
ampacity
Recommended
fuses
RYYQ28/RXYQ28
55.0 A
63 A
RYYQ30/RXYQ30
59.0 A
80 A
RYYQ32/RXYQ32
62.0 A
80 A
RYYQ34/RXYQ34
66.0 A
80 A
RYYQ36/RXYQ36
70.0 A
80 A
RYYQ38/RXYQ38
76.0 A
100 A
RYYQ40/RXYQ40
81.0 A
100 A
RYYQ42/RXYQ42
84.0 A
100 A
RYYQ44/RXYQ44
86.0 A
100 A
RYYQ46/RXYQ46
89.0 A
100 A
RYYQ48/RXYQ48
93.0 A
125 A
RYYQ50/RXYQ50
97.0 A
125 A
RYYQ52/RXYQ52
101.0 A
125 A
RYYQ54/RXYQ54
105.0 A
125 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 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 RXYQ30 by using the RXYQ8, RXYQ10, and RXYQ12.
▪
Minimum circuit ampacity of the RXYQ8=16.1 A
▪
Minimum circuit ampacity of the RXYQ10=22.0 A
▪
Minimum circuit ampacity of the RXYQ12=24.0 A
Accordingly, the minimum circuit ampacity of the
RXYQ30=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.
Summary of Contents for RYYQ8U7Y1B
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