17 | Electrical installation
Installer and user reference guide
92
RKXYQ5T8+8T7Y1B + RDXYQ5T8+8T7V1B
VRV IV heat pump for indoor installation
4P499898-1B – 2021.12
17.1.3 Guidelines when knocking out knockout holes
NOTICE
Precautions when making knockout holes:
▪ Avoid damaging the casing.
▪ After making the knockout holes, we recommend you remove the burrs and paint
the edges and areas around the edges using repair paint to prevent rusting.
▪ When passing electrical wiring through the knockout holes, wrap the wiring with
protective tape to prevent damage.
a Knockout hole
b Burr
c Sealant etc.
17.1.4 About electrical compliance
Only for RKXYQ8
This equipment complies with:
▪ EN/IEC 61000‑3‑12 provided that the short-circuit power S
sc
is greater than or
equal to the minimum S
sc
value at the interface point between the user's supply
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 >16A and ≤75A 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
sc
greater
than or equal to the minimum S
sc
value.
Model Minimum S
sc
value
RKXYQ8 3329kVA
17.1.5 Safety device requirements
NOTICE
When using residual current operated circuit breakers, be sure to use a high-speed
type 300mA rated residual operating current.
Power supply: Compressor unit
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.
Selection and sizing of the wiring should be done in accordance with the applicable
legislation based on the information mentioned in the table below.
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