5 Installation
Installation manual
31
RWEQ96~432TAYD
∗
+ RWEQ96~432TATJ
∗
VRV W T-Series water-cooled system air conditioner
5 .7 .5
To insulate the water piping
The outside water piping MUST be insulated to prevent
condensation during cooling operation and reduction of the heating
and cooling capacity.
See "4.4.2
Water circuit requirements"
on page
17 for more
information.
5 .8
Connecting the electrical wiring
5 .8 .1
Precautions when connecting electrical
wiring
DANGER: RISK OF ELECTROCUTION
WARNING
All field wiring and components must be installed by a
licensed electrician and must comply with the applicable
local and national codes.
WARNING
If NOT factory installed, a main switch or other means for
disconnection, having a contact separation in all poles
providing full disconnection under overvoltage category III
condition, MUST be installed in the fixed wiring.
WARNING
▪ Use copper wires only.
▪ Make sure the field wiring complies with the applicable
local and national codes.
▪ All field wiring must be performed in accordance with
the wiring diagram supplied with the product.
▪ NEVER squeeze bundled cables and make sure they
do not come in contact with the piping and sharp
edges. Make sure no external pressure is applied to the
terminal connections.
▪ Make sure to install ground wiring. Do NOT ground the
unit to a utility pipe, surge absorber, or telephone
ground. Incomplete ground may cause electrical shock.
▪ Make sure to use a dedicated power circuit. NEVER
use a power supply shared by another appliance.
▪ Make sure to install the required fuses or circuit
breakers.
Install power cables at least 10 ft (3 m) away from televisions or
radios to prevent interference. Depending on the radio waves, a
distance of 10 ft (3 m) may not be sufficient.
WARNING
▪ After finishing the electrical work, confirm that each
electrical component and terminal inside the electrical
components box is connected securely.
▪ Make sure all covers are closed before starting up the
unit.
NOTE
Do NOT operate the unit until the refrigerant piping is
complete. Running the unit before the piping is ready will
break the compressor.
NOTE
Only proceed with wiring work after blocking off all power.
NOTE
This machine includes an inverter device. Connect ground
and leave charge to eliminate the impact on other devices
by reducing noise generated from the inverter device and
to prevent leaked current from being charged in the outer
shell of the product.
NOTE
Never connect the power supply in reverse-phase.
NOTE
Do NOT install a phase advancing capacitor, because this
unit is equipped with an inverter. A phase advancing
capacitor will reduce performance and may cause
accidents.
NOTE
NEVER remove a thermistor, sensor, etc., when
connecting power wiring and transmission wiring. (If
operated without thermistor, sensor, etc., the compressor
may break down.)
5 .8 .2
Field wiring: Overview
In case of heat recovery mode
3
4
5
8
6
1
2
7
3
1
Field power supply
2
Main switch
3
Fuse or circuit breaker
4
Remote controller
5
Outside unit
6
Branch selector unit
7
Indoor unit
8
Cool/heat selector
Power supply wiring
Transmission wiring
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