To Connect The Conduit; To Connect The Optional Wiring - Daikin VRV W T Serie Manual De Instalación

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).
b
c
a
d
e
a Power supply (208/230 V - 3 phase 60 Hz OR 460 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)
RWEQ96~432TATJU + RWEQ96~432TAYDU
VRV W T-Series water-cooled system air conditioner
4P484115-1A – 2017.10
Tightening torque (lbf·ft)
4.05~5.38
f
e
g
j h i
Top plate
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
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.
Connect the power source to X2M terminals 1 and 3 (respect the
polarity).
X2M
a
+
X2M
2~9 V DC
–
a Valve/pump
b Power supply
NOTE
Make sure to connect a flow switch to your VRV W
T-Series water-cooled system. Running the system with a
flow rate below the minimum requirement can result in
damage of the system.
Interlock
It is mandatory to connect a flow switch to the interlock circuit of the
outside unit. Running the system with a flow rate below the minimum
requirement can result in damage of the system. The flow switch
should be installed in the main water circuit between the plate heat
exchanger and the closed valve. Select a flow switch contact of at
least 15 V DC, 1 mA.
Connect the flow switch to: X2M terminals 5 and 6.
In case of a multi outside unit system, install one or more flow
switches depending on the installation of the water system so that
water flow is guaranteed under every condition.
NOTE
If the flow switch is installed in a variable water flow
system, take into account the inertia of the water flow. If a
variable water flow system is used, the flow switch control
should be linked to the compressor operation using the
multifunction output terminal "b".
Failure to do so will result in unintended "forced thermo off"
conditions.
5 Installation
17.
1 2 3 4 5 6 7 8 9 10
INTER TW1 TW2
LOCK IN OUT
+ –
b
12 V DC
Installation manual
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