16 Configuration
Installation and operation manual
28
RXYTQ8~16U7YF
VRV IV+ heat pump for high ambient temperatures
4P546223-1B – 2020.10
c
X1M
a
b
a
c
d
X1M
b
8 HP
10~16 HP
A
A
A
d
d
d
d
a
Power supply (possibility 1)
(a)
b
Power supply (possibility 2)
(a)
c
Power supply (possibility 3)
(a)
. Use conduit.
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
b
c
d
f
g
e
i
j
h
10~16 HP
a
b
c
d
f
g
e
i
j
h
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
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,
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
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
Then
≥1 MΩ
Insulation resistance is OK. This procedure
is finished.
<1 MΩ
Insulation resistance is not OK. Go to the
next step.
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:
▪
▪
"To access the field setting components"
PC configurator
See also:
"To connect the PC configurator to the outdoor
31].
