7 Configuration
Installer and user reference guide
32
RXYTQ8~16U7YF
VRV IV+ heat pump for high ambient temperatures
4P561157-1 – 2018.09
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.
6.8.9
To connect the power supply
NOTICE
Never connect the power supply to transmission wiring
terminal block. Otherwise the entire system may break
down.
INFORMATION
Installation and routing in case the cool/heat selector is
used: refer to the installation manual of the cool/heat
selector.
CAUTION
When connecting the power supply, the earth connection
must be made before the current-carrying connections are
established. When disconnecting the power supply, the
current-carrying connections must be separated before the
earth connection is. The length of the conductors between
the power supply stress relief and the terminal block itself
must be as such that the current-carrying wires are
tautened before the earth wire is in case the power supply
is pulled loose from the stress relief.
Tightening torque for the terminal screws:
Screw size
Tightening torque (N•m)
M8 (power terminal block)
5.5~7.3
M8 (ground)
NOTICE
When connecting the earth wire, align the wire with the cut
out section of the cup washer. Incomplete earthing may
cause electrical shock.
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
7
Configuration
7.1
Overview: Configuration
This chapter describes what you have to do and know to configure
the system after it is installed.
It contains information about:
▪ Making field settings
▪ Energy saving and optimum operation
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
