Field Wiring: Overview - Daikin RXYSA4A7V1B Installer And User Manual

20 | Electrical installation

20.1.2 Field wiring: Overview

Installer and user reference guide
102
WARNING
▪
All wiring MUST be performed by an authorised electrician and MUST comply
with the applicable legislation.
▪
Make electrical connections to the fixed wiring.
▪
All components procured on-site and all electrical construction MUST comply
with the applicable legislation.
WARNING
▪
If the power supply has a missing or wrong N-phase, equipment might break
down.
▪
Establish proper earthing. Do NOT earth the unit to a utility pipe, surge absorber,
or telephone earth. Incomplete earthing may cause electrical shock.
▪
Install the required fuses or circuit breakers.
▪
Secure the electrical wiring with cable ties so that the cables do NOT come in
contact with sharp edges or piping, particularly on the high-pressure side.
▪
Do NOT use taped wires, stranded conductor wires, extension cords, or
connections from a star system. They can cause overheating, electrical shock or
fire.
▪
Do NOT install a phase advancing capacitor, because this unit is equipped with an
inverter. A phase advancing capacitor will reduce performance and may cause
accidents.
CAUTION
Do NOT push or place redundant cable length in the unit.
NOTICE
The distance between the high voltage and low voltage cables should be at least
50 mm.
Field wiring consists of:
▪ power supply (including earth),
▪ DIII transmission wiring between communication box and outdoor unit,
▪ RS‑485 transmission wiring between communication boxnd monitoring system.
NOTICE
▪
Be sure to keep the power line and transmission line apart from each other.
Transmission wiring and power supply wiring may cross, but may NOT run
parallel.
▪
In order to avoid any electrical interference the distance between both wirings
should ALWAYS be at least 50 mm.
Transmission wiring
The transmission wiring outside the unit should be wrapped and routed together
with the field piping. See
Transmission wiring specification and limits
Vinyl cords with 0.75 to 1.25 mm² sheath or cables (2‑core wires)
Maximum number of branches for unit-to-unit cabling
"21 Finishing the outdoor unit
4
installation" [ 112].
(a)
9
RXYSA4~6A7V/Y1B
VRV 5-S system air conditioner
4P600330-1A – 2020.07