Electric Wiring Work Installation - Mitsubishi Electric FDT125VNVF Technical Manual

PSB012D966_EN_01_cs_non.pdf 2012/03/06 15:37:32

1.10.2 Electric wiring work installation

(1) FDT, FDTC, FDEN, FDU100-140 Series
Electrical wiring work must be performed by an electrician qualified by a local power provider according to
the electrical installation technical standards and interior wiring regulations applicable to the installation site.
Read the "SAFETY PRECAUTIONS" carefully first of all and then strictly follow it during the
●
installation work in order to protect yourself.
The precautionary items mentioned below are distinguished into two levels,
●
and .
CAUTION
: Wrong installation would cause serious consequences such as injuries or death.
: Wrong installation might cause serious consequences depending on circumstances.
CAUTION
Both mentions the important items to protect your health and safety so strictly follow
them by any means.
The meanings of "Marks" used here are as shown on the right:
●
Never do it under any circumstances.
Accord with following items. Otherwise, there will be the risks of electric shock and
●
fire caused by overheating or short circuit.
Be sure to have the electrical wiring work done by qualified electrical installer,
●
and use exclusive circuit.
Power source with insufficient capacity and improper work can cause electric shock and fire.
Use specified wire for electrical wiring, fasten the wiring to the terminal securely,
●
and hold the cable securely in order not to apply unexpected stress on the terminal.
Loose connections or hold could result in abnormal heat generation or fire.
● Arrange the electrical wires in the control box properly to prevent them from
rising. Fit the lid of the services panel property.
Improper fitting may cause abnormal heat and fire.
Use the genuine optional parts. And installation should be performed by a
●
specialist.
If you install the unit by yourself, it could cause water leakage, electric shock and fire.
Do not repair by yourself. And consult with the dealer about repair.
●
Improper repair may cause water leakage, electric shock or fire.
Consult the dealer or a specialist about removal of the air conditioner.
●
Improper installation may cause water leakage, electric shock or fire.
Turn off the power source during servicing or inspection work.
●
If the power is supplied during servicing or inspection work, it could cause electric
shock and injury by the operating fan.
Shut off the power before electrical wiring work.
●
It could cause electric shock, unit failure and improper running.
Perform earth wiring surely.
●
Do not connect the earth wiring to the gas pipe, water pipe, lightning rod and telephone earth
wiring. Improper earth could cause unit failure and electric shock due to a short circuit.
Earth leakage breaker must be installed.
●
If the earth leakage breaker is not installed, it can cause electric shocks.
● Make sure to install earth leakage breaker on power source line.
(countermeasure thing to high harmonics.)
Absence of breaker could cause electric shock.
● Use the circuit breaker of correct capacity. Circuit breaker should be the one
that disconnect all poles under over current.
Using the incorrect one could cause the system failure and fire.
Do not use any materials other than a fuse of correct capacity where a fuse
●
should be used.
Connecting the circuit by wire or copper wire could cause unit failure and fire.
Use power source line of correct capacity.
●
Using incorrect capacity one could cause electric leak, abnormal heat generation and fire.
● Do not mingle solid cord and stranded cord on power source and signal side
terminal block.
In addition, do not mingle difference capacity solid or stranded cord.
Inappropriate cord setting could cause loosing screw on terminal block, bad electrical
contact, smoke and fire.
Do not turn off the power source immediately after stopping the operation.
●
Be sure to wait for more than 5 minutes. Otherwise it could cause water leakage or
breakdown.
● Do not control the operation with the circuit breaker.
It could cause fire or water leakage. In addition, the fan may start operation
unexpectedly and it may cause injury.
Security instructions
Always do it according to the instruction.
WARNING
CAUTION
Electrical Wiring Connection
● Use three-core cable as wiring between indoor and outdoor unit. As for detail, refer to "INSTAL-
LATION MANUAL" of outdoor Unit.
● Set earth of D-type.
● Keep "remote controller line" and "power source line" away from each other on constructing of
unit outside.
● Run the lines (power source, remote controller and "between indoor and outdoor unit") upper
ceiling through iron pipe or other tube protection to avoid the damage by mouse and so on.
●
Do not add cord in the middle of line route (of power source, remote controller and "between
indoor and outdoor unit") on outside of unit. If connecting point is flooded, it could cause
problem as for electric or communication. (In the case that it is necessary to set connecting
point on the way, perform thorough waterproof measurement.)
● Do not connect the power source line [220V/240V/380V/415V] to signal side terminal block.
Otherwise, it could cause failure.
●
Screw the line to terminal block without any looseness, certainly.
● Do not turn on the switch of power source, before all of line work is done.
● Connection of the line ("Between indoor and outdoor unit", Earth and Remote controller)
①Remove lid of control box before connect the above lines, and connect the lines to terminal
block according to number pointed on label of terminal block.
In addition, pay enough attention to confirm the number to lines, because there is electrical
polarity except earth line. Furthermore, connect earth line to earth position of terminal block of
power source.
② Install earth leakage breaker on power source line. In addition, select the type of breaker for
inverter circuit as earth leakage breaker.
③If the function of selected earth leakage breaker is only for earth-fault protection, hand switch
(switch itself and type "B" fuse) or circuit breaker is required in series with the earth leakage
breaker.
④Install isolator or disconnect switch on the power supply wiring in accordance with the local
codes and regulations．
The isolator should be set in the box with key to prevent touching by another person when
servicing.
Cable connection for single unit installation
①As for connecting method of power source, select from following connecting patterns. In principle, do
not directly connect power souce line to inside unit.
As for exceptional connecting method of power souce, discuss with the power provider of the
country with referring to technical documents, and follow its instruction.
② For cable size and circuit breaker selection, refer to the outdoor unit installation manual.
Single-phase model
Power source
r k
Earth leakage breaker
Circuit breaker
Power source line
L N
Outdoor Unit
①②③
Earth
Indoor-Outdoor
Connecting line
①②③
Indoor Unit
Earth
controller line
Remote controller
Cable connection for a V multi configuration installation
① Connect the same pairs number of terminal block "
master and slave indoor units.
②
Do the same address setting of all inside units belong to same refrigerant system by rotary
switch SW2 on indoor unit's PCB (Printed circuit board).
③ Set slave indoor unit as "slave 1" through "slave 3" by address switch SW5-1, 5-2 on PCB.
④ When the button on the remote control unit is pressed after turning on the power, an
AIR CON NO.
indoor unit's address number will be displayed. Do not fail to confirm that the connected indoor
unit's numbers are displayed on the remote control unit by pressing the
Method of setting Master/Slave of indoor unit
Power source
(Factory setting: "Master")
Earth leakage
breaker
Circuit breaker
Outdoor Unit
①②③
Earth
①②③
①②③
Indoor Unit Master Indoor Unit
Earth Earth
Remote controller line (no polarity)
Remote controller
244
- -
'12 • PAC-T-174
PSB012D966
PSBO12D966
Three-phase model
Power source
Earth leakage breaker
Earth leakage breaker
Circuit breaker
Power source line
L1 L2 L3 N
Outdoor Unit
①②③
Earth
Indoor-Outdoor
Connecting line
①②③
Indoor Unit
Earth
Remote
controller line
Remote controller
① , ② ,and ③ "and " X and Y " between
or
Indoor Unit Master Slave 1 Slave 2
SW5-1 OFF OFF ON
PCB
SW
SW5-2 OFF ON OFF
Twin type Triple type
①②③
Slave 1 Indoor Unit Slave 2
Earth Earth
②Remo
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②Pla
③Hig
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④Avoid u
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AIR CON
that all i
Remote
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button to
Push the
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The air co
master/sla
button.
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and one (
Set SW1 (
unit. It wa
Note:The
Slave 3
cont
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ON
Double twin type
①②③
Indoor Unit Slave 3
R
Ind
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