Fujitsu AUXB07GALH, Руководство по установке

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6.1. Electrical requirement
Voltage rating 230 V
Operating range 198 to 264 V
• Select the power cable type and size in accordance with relevant local and national
regulations.
• Speci fi cations for local wiring power cord and branch wiring are in compliance with local code.
• Max. wire length: Set a length so that the voltage drop is less than 2%. Increase the wire
diameter when the wire length is long.
Refer to the table for the breaker speci fi cations of each installation condition. Perform
the power crossover wiring within the range of the same refrigerant system. When the
crossover wiring is done, make a connection for indoor units to satisfy conditions A and B
below.
A. Current breaker requirements
Model MCA MFA
AUXB07GALH 0.20 A
20 A
AUXB09GALH 0.20 A
AUXB12GALH 0.24 A
AUXB14GALH 0.29 A
AUXB18GALH 0.30 A
AUXB24GALH 0.75 A
MCA: Minimum Circuit Ampacity
MFA: Maximum Fuse Ampacity
When the power crossover wiring is done, make it so that the total of the MCA of the
connected RB units and indoor units does not exceed the 15 A. For RB unit MCA, refer to
the RB unit installation manual.
If the capacity of connected RB units and indoor units exceeds the upper limit, either add
breakers or use a breaker with a greater capacity.
B. Earth leakage breaker requirements
Breaker capacity
* Maximum connectable “indoor units” or
“indoor units + RB units”
30 mA, 0.1 sec or less 44 or less **
100 mA, 0.1 sec or less 45 to 128
* Heat pump type: indoor units, Heat recovery type: indoor units and RB units.
** If the total number of units connected to the breaker exceeds 44, either add a 30mA
breaker, or use breakers with a greater capacity.
6.1.1. Cable speci fi cations
Recommended
cable size (mm
2
)
Cable type Remark
Power supply
cable
2.5
Type245 IEC57 or
equivalent
1ø 50 Hz 198 to 264 V
2 Cable + earth
(ground)
Transmission
cable
0.33
LONWORKS
compatible cable
22 AWG LEVEL 4
(NEMA)
non-polar 2 core,
twisted pair solid core
diameter 0.65 mm
Remote
controller cable
(2-wire type)
0.33 to 1.25
Sheathed PVC
cable*
Non polar 2 core
Remote
controller cable
(3-wire type)
0.33
Sheathed PVC
cable*
Polar 3 core
*: Use shielded cable in accordance with local rules for remote controller cable.
6.2. Wiring method
*2 *2
*3 *3
*2
*3
Outdoor unit or RB unit *1
EXAMPLE
Transmission
Transmission
Indoor unit
Remote controller
(Master)
Power supply
Indoor unit Indoor unit
Power supply
Remote
control
Breaker
Breaker
Breaker
Remote controller
(Slave)
Remote controller
*1: When connecting to the Heat Recovery System, refer to the installation manual of the
RB unit.
*2: Earth (Ground) the remote controller if it has an earth (ground) cable.
*3: When connecting the 2-wire type remote controller, Y3 is not used.
Power supply Power supply Power supply
Power supply
Indoor unit
Pull box
Indoor unit
Indoor unit
Breaker
Pull box
(Crossover wiring of power supply)
6.3. Unit wiring
Before attaching the cable to terminal block.
6.3.1. Power supply cable
Adjust the length of power supply cable to avoid excessive tension with referring fi gure
below.
Earth (Ground)
cable
20 mm
50 mm
A. For solid core wiring
(1) To connect the electrical terminal, follow the below diagram and connect after
looping it around the end of the cable.
(2) Use the speci fi ed cables, connect them securely, and fasten them so that there is no
stress placed on the terminals.
(3) Use an appropriate screwdriver to tighten the terminal screws.
Do not use a screwdriver that is too small, otherwise, the screw heads may be
damaged and prevent the screws from being properly tightened.
(4) Do not tighten the terminal screws too much, otherwise, the screws may break.
(5) See the table for the terminal screw tightening torques.
(6) Please do not
fi x 2 power supply cables with 1 screw.
Strip 25 mm
Loop
Screw with
special washer
Screw with
special washer
Cable end (Loop)
Cable end (Loop)
Cable
Cable
Terminal block
WARNING
When using solid core cables, do not use the ring terminal. If you use the solid core
cables with the ring terminal, the ring terminal's pressure bonding may malfunction and
cause the cables to abnormally heat up.
B. For strand wiring
(1) Use ring terminals with insulating sleeves as shown in the fi gure below to connect to
the terminal block.
(2) Securely clamp the ring terminals to the cables using an
appropriate tool so that the cables do not come loose.
(3) Use the speci fi ed cables, connect them securely, and fasten them so that there is no
stress placed on the terminals.
(4) Use an appropriate screwdriver to tighten the terminal screws.
Do not use a screwdriver that is too small, otherwise, the screw heads may be
damaged and prevent the screws from being properly tightened.
(5) Do not tighten the terminal screws too much, otherwise, the screws may break.
(6) See the table for the terminal screw tightening torques.
(7) Please do not
fi x 2 power supply cables with 1 screw.
9371022253-01_IM.indb Sec1:7 9371022253-01_IM.indb Sec1:7 2012-7-12 14:34:43 2012-7-12 14:34:43