Toshiba MMW-AP0481CHQ-E, Installation Manual

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 Wiring between indoor (including hot water module) and outdoor units
NOTE
• An outdoor unit connected with control wiring between indoor (including hot water module) and outdoor units wire becomes automatically the header unit.
• Do not turn off the circuit breaker of the hot water module when the circuit breaker of the system (outdoor unit) is set to the ON position.
• It becomes a cause of a trouble.
▼ Wiring example
U2 U1 U3 U4 U5 U6 S S U2 U1 U3U4 U5 U6 S S
L N
A B U2 U1
L N
A B U2 U1
L N
A B U2 U1
L N
A B U2 U1
A B A B A B
A B A B A B
L N L N L N
A B
L N
Pull box
Pull box
Pull box
Pull box
Pull box Pull box Pull box
Flow selector unit Flow selector unit Flow selector unit Flow selector unit
Earth Earth
Earth
Earth
Communication
wire
Communication
wire
Communication
wire
Remote controller Remote controller Remote controller
Earth
Earth Earth
Earth
Indoor unit
Indoor unit Hot water module
Hot water module
Control wiring between indoor units
Control wiring between indoor and outdoor units
Control wiring between outdoor units
Outdoor unit
Header outdoor
Outdoor unit
Follower outdoor
: In case of connecting Flow selector unit for SHRM-e
(Single port long piping model or Multi port type)
Hot water module
power supply
220-240 V ~, 50 Hz
Circuit breaker
(Earth leakage breaker)
power switch
Hot water module
power supply
220-240 V ~, 50 Hz
Circuit breaker
(Earth leakage breaker)
power switch
Indoor unit / Flow selector unit
power supply
220-240 V ~, 50 Hz
Circuit breaker
(Earth leakage breaker)
power switch
45-EN 46-EN