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The power supply wiring can be routed from the front side. Exit the
wiring via the upper mounting hole.
5 .8 .8
To connect the power supply
NOTE
Never connect the power supply to transmission wiring
terminal block. Otherwise the entire system may break
down.
CAUTION
When connecting the power supply, the ground 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
ground 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 ground wire is in case the power
supply is pulled loose from the stress relief.
Tightening torque for the terminal screws:
Screw size
M8 (Power terminal block)
M8 (Ground)
NOTE
Recommendations when connecting the ground wire:
Wire it so that it comes through the cut out section of the
cup washer. (An improper ground connection may prevent
a good grounding from being achieved.)
The power supply must be clamped to the plastic bracket using field
supplied clamp material.
The green and yellow striped wire must be used for grounding only
(refer to the figure below).
RWEQ96~432TAYCU
VRV W T-Series water-cooled system air conditioner
4P540122-1B – 2018.11
A1P
Tightening torque
4.05~5.38 ft·lbf (5.5~7.3 N·m)
b
c
a
d
e
a
Power supply (575 V - 3 phase 60 Hz)
b
Fuse
c
Ground leakage protector
d
Ground wire
e
Power supply terminal block
f
Connect each power wire: RED to L1, WHT to L2 and BLK
to L3
g
Ground wire (GRN/YLW). When connecting the ground
wire, it is recommended to perform curling.
h
Clamp the power supply to the bracket using a field
supplied clamp to prevent external force being applied to
the terminal.
i
Cup washer.
j
Vinyl tube (accessory)
5 .8 .9
To connect the conduit
Power supply and transmission wiring: Connect it using
conduit mounting plates .
Conduit (field supply)
Top plate
Conduit
mounting
plate
(accessory)
Lock nut (field supply)
5 .8 .10
To connect the optional wiring
For the optional wiring use insulated wires of a rated voltage of
250 V or higher and a minimal cross section of AWG16 for single
core wires and AWG18 for multicore wires.
Variable water flow
The variable water flow output signal is a low voltage control signal
which generates an output of 2~9 V DC depending on the required
water flow rate through the plate heat exchanger. For more
information, see "4.4.4 Variable water flow rate" on page 17.
NOTE
The maximum output power of the 2~9 V DC output signal is
50 mW. Exceeding this power can result in damage of the system.
Always use shielded cables with a minimal cross section of
AWG18 and a length limited to 328 ft (100 m).
The control line of the valve/pump should be connected to the X2M
connector in the electrical switchbox. To connect the valve/pump to
the outside unit, also provide a separate 12 V DC power supply (to
be installed external of outside unit) (with an output power of at least
50 mW) to the X2M connector.
Connect the valve/pump to: X2M terminals 2 and 3.
5 Installation
f
e
g
j
h
i
Top plate
Installation manual
33
- Quick Links:
- Wiring Diagram: Outside Unit
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