To Connect The Power Supply; To Check The Insulation Resistance Of The Compressor; 16 Configuration; Making Field Settings - Daikin VRV IV+ RXYTQ8U5/U7YF Installation And Operation Manual

16 Configuration

8 HP
X1M
A
c b a
A
a Power supply (possibility 1)
b Power supply (possibility 2)
c Power supply (possibility 3)
d Tie wrap
(a) Knockout hole has to be removed. Close the hole to avoid
small animals or dirt from entering.
15.7

To connect the power supply

The power supply MUST be clamped to the plastic bracket using
field supplied clamp material to prevent external force being applied
to the terminal. The green and yellow striped wire MUST be used for
earthing only.
8 HP
a c b d
10~16 HP
a c b d
a Power supply (380~415 V, 3N~ 50 Hz)
b Fuse
c Earth leakage protector
d Earth wire
e Power supply terminal block
f Connect each power wire: RED to L1, WHT to L2, BLK to
L3 and BLU to N
g Earth wire (GRN/YLW)
h Tie wrap
i Cup washer
Installation and operation manual
28
10~16 HP
X1M
d
d
A
d
c b a
(a)
(a)
(a)
. Use conduit.
e
f
g
i
j
h
e
f
g
i
j
h
j When connecting the earth wire, it is recommended to
perform curling.
Multiple outdoor units
To connect the power supply for multiple outdoor units to each other,
d
ring tongues have to be used. No bare cable can be used.
In that case, the ring washer that is installed by default should be
removed.
Attach both cables to the power supply terminal as indicated below:
L1 L2 L2 N
d
15.8 To check the insulation resistance
of the compressor
NOTICE
If, after installation, refrigerant accumulates in the
compressor, the insulation resistance over the poles can
drop, but if it is at least 1 MΩ, then the unit will not break
down.
▪ Use a 500 V mega-tester when measuring insulation.
▪ Do NOT use a mega-tester for low voltage circuits.
1 Measure the insulation resistance over the poles.
If
≥1 MΩ
<1 MΩ
2 Turn ON the power and leave it on for 6 hours.
Result: The compressor will heat up and evaporate any
refrigerant in the compressor.
3 Measure the insulation resistance again.
16 Configuration
INFORMATION
It is important that all information in this chapter is read
sequentially by the installer and that the system is
configured as applicable.
DANGER: RISK OF ELECTROCUTION
16.1

Making field settings

16.1.1

About making field settings

Making settings is done via the master outdoor unit.
Next to making field settings it is also possible to confirm the current
operation parameters of the unit.
See also:
components" [ 4 29]
▪ "16.1.2 Field setting
▪ "16.1.3 To access the field setting
PC configurator
See also: "16.1.9 To connect the PC configurator to the outdoor
unit" [ 4 31].
Then
Insulation resistance is OK. This procedure
is finished.
Insulation resistance is not OK. Go to the
next step.
components" [ 4 29]
VRV IV+ heat pump for high ambient temperatures
4P546223-1C – 2021.11
RXYTQ