Field Wiring: Overview; About The Electrical Wiring - Daikin RWEYQ8T9Y1B Installer And User Manual

6 Installation
NOTICE
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.
NOTICE
NEVER remove a
connecting power wiring and transmission wiring. (If
operated without thermistor, sensor, etc., the compressor
may break down.)
6.9.2

Field wiring: Overview

In case of heat recovery mode
a
d
b
B
i j
c
a Field power supply (with earth leakage protector)
b Main switch
c Earth connection
d Outdoor unit
e Indoor unit
f User interface
g BS unit
h Cool/heat selector
i Circuit breaker
j Fuse
Power supply 3N~ 50 Hz
Power supply 1~ 50 Hz
Earth wiring
In case of heat pump mode
a
d d
i
c
b
h
a
b g
c
e e
h
h h
h f f
a Field power supply (with earth leakage protector)
b Main switch
c Earth connection
d Outdoor unit
e Indoor unit
f User interface
g Indoor power supply wiring (sheathed cable) (230 V)
h Transmission wiring (sheathed cable) (16 V)
i Outdoor power supply wiring (sheathed cable)
Power supply 3N~ 50 Hz
Power supply 1~ 50 Hz
Earth wiring
6.9.3

About the electrical wiring

It is important to keep the power supply and the transmission wiring
separated from each other. In order to avoid any electrical
interference the distance between both wiring should always be at
least 25 mm.
Installer and user reference guide
32
thermistor, sensor, etc., when
g
h
i
j
f
c
d
h
g
e
h
h
f
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.
▪ Transmission wiring and power supply wiring may not
touch internal piping (except the inverter PCB cooling
pipe) in order to avoid wire damage due to high
temperature piping.
▪ Firmly close the lid and arrange the electrical wires so
as to prevent the lid or other parts from coming loose.
The transmission wiring outside the unit should be wrapped and
routed together with the field piping.
Be sure to follow the limits below. If the unit-to-unit cables are
beyond these limits, it may result in malfunction of transmission:
Description
Maximum wiring length
Total wiring length
Maximum inter unit wiring length between
outdoor units
e
Transmission wiring to cool/heat selector
f
Maximum number of branches for unit-to-
(a)
unit cabling
Maximum number of independent
interconnectable systems
(a) No branching is allowed after branching (see figure below).
In case of heat recovery mode
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
Limitation
1000 m
2000 m
30 m
500 m
16
10
h
a
d
b
e
b
g
b
f
b
g
b
c
b
RWEYQ8~14T9V1B + RWEYQ8~14T9Y1B
VRV IV water-cooled system air conditioner
4P452191-1 – 2017.04