External Connection Diagram - Daikin VRV-WII RWEYQ-MY1 Series Technical Data Manual

6 Wiring diagram

6 - 2 External connection diagram

RWEYQ10,20,30MY1-HEAT PUMP
When the power source is supplied to each outdoor unit individually.
Power supply
L1 L2 L3 N
Main
switch
Switch Switch Switch
Fuse Fuse Fuse
2 Wires cable
(Transmission line)
Switch
Fuse
2 Wires cable
(Power line)
2 Wires cable
(Power line)
NOTES
1 All wiring, components and materials to be procured on site must comply with the applicable local and
national codes.
2 Use copper conductors only.
3 As for details, see wiring diagram.
4 Install circuit breaker for safety.
5 All field wiring and components must be provided by a licensed electrician.
6 Unit shall be grounded in compliance with the applicable local and national codes.
7 Wiring shown are general points-of-connection guides only and are not intended for or to include all
details for a specific installation.
• Outdoor Units • HEAT PUMP • RWEYQ-MY1
OUTDOOR UNITS
2 Wires cable 2 Wires cable
(Transmission line) (Transmission line)
[ Unit 1 ] [ Unit 2 ]
2 Wires cable
2 Wires cable
(Transmission line)
(Transmission line)
Switch Switch Switch
Fuse Fuse Fuse
2 Wires cable 2 Wires cable
(Power line) (Power line)
INDOOR UNITS
• VRV Systems • Outdoor Units
When the power source is connected in series between the units.
Power supply
L1 L2 L3 N
Main
switch
[ Unit 3 ]
Switch
Fuse
2 Wires cable
(Transmission line)
2 Wires cable
(Transmission line)
Switch Switch
Fuse Fuse
2 Wires cable
2 Wires cable
(Power line)
(Power line)
8 Be sure to install the switch and the fuse to the power line of each equipment.
9 Install the main switch that it can interrupt all the power sources in an integrated manner because this
system consists of the equipment utilizing the multiple power sources.
10 The capacity of UNIT 1 must be larger than UNIT 2 when the power source is connected in series between
the units.
11 If there exists the possibility of reversed phase, lose phase, momentary blackout or the power goes on
and off while the product is operating, attach a reversed phase protection circuit locally.
Running the product in reversed phase may break the compressor and ohter parts.
OUTDOOR UNITS
2 Wires cable 2 Wires cable
(Transmission line) (Transmission line)
[ Unit 1 ] [ Unit 2 ] [ Unit 3 ]
2 Wires cable
2 Wires cable
2 Wires cable
(Transmission line) (Transmission line)
(Transmission line)
Switch Switch
Fuse Fuse
2 Wires cable 2 Wires cable
(Power line) (Power line)
INDOOR UNITS
3
1
6
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