Bosch MDCI Series - Electrical Wiring

Mini VRF Heat Pump Outdoor Unit 6 720 874 421 (2017/04) ZA
ELECTRICAL WIRING | 9
5. ELECTRICAL WIRING
Outdoor unit
Signal wire between indoor/outdoor unit
Indoor unit
Indoor unit
Indoor unit
Signal wire between indoor units
N
L
P Q E
L
N EQP EYX L N E L N EQP QP
Y EX
Branch Box Branch Box
CCM
EYX EYX
Branch Box
Please use 3-core shielded wire, and connect the shielded layer to ground.
Power Supply
Power Supply
X Y E
Y EX
CCM
For 8~18 kw (1-Phase) Fig. 5-1
Outdoor unit
Signal wire between indoor/outdoor unit
Indoor unit
Indoor unit
Indoor unit
Signal wire between indoor units
N
L1 L2 L3
P Q E
L
N EQP EYX L N E L N EQP QP
Y EX
Branch Box Branch Box
CCM
EYX EYX
Branch Box
Please use 3-core shielded wire, and connect the shielded layer to ground.
Power Supply
Power Supply
X Y E
Y EX
CCM
For 10.5~18 kw (3-Phase) Fig. 5-2
Outdoor
Unit
Indoor
Unit
Power wiring
(indoor)
Communication Bus
Power (220-240V~ 50Hz 1-Phase) Power (220-240V~ 50Hz 1-Phase)
Indoor
Unit
Indoor
Unit
Wire distribution box
Switch / Circuit breaker
Switch / Circuit breaker
Power wiring
(outdoor)
Central control
monitor (CCM)
Computer
In broken line table, users can purchase the central
control montior when necessary.
For 8~18 kW Fig. 5-3