About Electrical Compliance - Daikin VRV IV W+ Series Installer And User Reference Manual

19.1.4 About electrical compliance

RWEYQ8~14T9Y1B
VRV IV water-cooled system air conditioner
4P452191-1B – 2020.10
In case of heat recovery system
A B
a a
a Outdoor unit
b Indoor unit
c Main line
d Branch line 1
e Branch line 2
f Branch line 3
g No branch is allowed after branch
h Central user interface (etc...)
A Outdoor/indoor transmission wiring
B Master/slave transmission wiring
For the above wiring, always use vinyl cords with 0.75 mm² to 1.25 mm² sheath or
cables (2-core wires). 3-core wire cables are only allowable for the cooler/heater
changeover user interface.
This equipment complies with:
▪ EN/IEC 61000‑3‑12 provided that the short-circuit power S
equal to the minimum S
and the public system.
- EN/IEC 61000‑3‑12 = European/International Technical Standard setting the
limits for harmonic currents produced by equipment connected to public low-
voltage systems with input current >16 A and ≤75 A per phase.
- It is the responsibility of the installer or user of the equipment to ensure, by
consultation with the distribution network operator if necessary, that the
equipment is connected only to a supply with a short-circuit power S
than or equal to the minimum S
Model
RWEYQ8~14T9
Because of the free multi combination, it is the responsibility of the installer to
calculate the minimum S
by adding up the values of the corresponding units used in the multi combination.
RWEYQ28T9=2× RWEYQ10T9+RWEYQ8T9.
h
a
b
b
b
b
b
b
value at the interface point between the user's supply
sc
value.
sc
value for the multi combination. The value is calculated
sc
19 Electrical installation
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d
e
g
f
g
c
is greater than or
sc
Minimum S value
sc
1780 kVA
Installer and user reference guide
greater
sc
107