Daikin VRV W T-series - To Insulate the Water Piping; Connecting the Electrical Wiring; Precautions When Connecting Electrical Wiring; Field Wiring: Overview

5 Installation
Installation manual
30
RWEQ96~432TAYCU
VRV W T-Series water-cooled system air conditioner
4P540122-1B – 2018.11
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 16 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
6
9
7
1
2
8
3
4
1 Field power supply
2 Main switch
3 Ground leak detector
4 Fuse or circuit breaker
5 Remote controller
6 Outside unit
7 Branch selector unit
8 Indoor unit
9 Cool/heat selector
Power supply wiring
Transmission wiring