Outdoor Units - Mitsubishi Electric FDT125VNVF Technical Manual

POWER SOURCE 1∼220ｰ240V 50Hz／1∼220V 60Hz
TB
F（30A） F（8A）
L1i
RD
L1 1
WH
NOISE FILTER
N Ni 2
E GN
PWB3
E1 GN
L1o No
GN
CT
DM
+ -
P1 N1
INVERTER
CNI2
PWB2 （WH）
I P M
CNI4
（WH）
CNACT1
U V W P2 N2 （WH） P N2
V
W
+ -
U
MS
P
A／F MODULE
3∼
+
N2
L1 L2
CM
L
Power cable, indoor-outdoor connecting wires
MAX over current Power cable size
Model
（A）
（mm ） 2
100
125 24 5.5
140
※At the connection with the duct type indoor unit.
MAX over current
Model Power cable size
（A）
（mm ） 2
100 25
5.5
125 27
140 28 8
The specifications shown in the above table are for units without heaters. For units with heaters, refer
to the installation instructions or the construction instructions of the indoor unit.
Switchgear of Circuit breaker capacity which is calculated from MAX. over current should be chosen
along the regulations in each country.
The cable specifications are based on the assumption that a metal or plastic conduit is used with no
more than three cables contained in a conduit and a voltage drop is 2%. For an installation falling
outside of these conditions, please follow the internal cabling regulations. Adapt it to the regulation
in effect in each country.
TB
RD
1
WH TO INDOOR UNIT
2
3
POWER WIRES
1 2
SIGNAL WIRE
3
5 or 6 wires
SM1
M
6 5 4 3 2 1
CNW CNW2 CNEEV1
（OR）
（BK） （WH）
BL
CNI1
（WH）
CONTROL
BL CNI3
PWB1
（WH）
52X1 52X3
LED1
RD
CNA2
BL
（WH）
RD
CNA1
CNR CNS CNH CNTH
BL
（WH）
（WH） （RD） （BR） （WH）
t° t° t°
CH 20S
63H1 THo-R1 THo-D THo-S
Power cable length indoor-outdoor Earth wire size
（m） wire size x number （mm）
φ 1.6mm x 3 φ 1.6
25
Power cable length indoor-outdoor Earth wire size
（m） wire size x number （mm）
24
φ 1.6mm x 3 φ 1.6
22
32
5 or 6 wires
SM2 FMO1
M M
6 5 4 3 2 1 7 6 5 4 1
CNEEV2 CNFAN1
（RD） （WH）
Mark
ON ON
OFF OFF
1 2 3 4 1 2 3 4 BK
LED2 SW1
SW3 SW5
BL
BR
CNPS CNB GN
CNIP
（Y） （WH） （RD）
GR
P
t° t° t°
OR
LPT RD
THo-A THo-IPM THo-R2
WH
Y
Y／GN
Local setting switch SW3（Set up at shipment OFF）
Defrost control change
SW3-1
SW3-2 Snow guard fan control
SW3-3,4
Trial operation
Item Description
CnA∼Z Connector
CH Crankcase heater
CM Compressor motor
CT Current sensor
DM Diode module
F Fuse
FM01 Fan motor
IPM Intelligent power module
L Reactor
LED1 Indication lamp（GREEN）
LED2 Indication lamp（RED）
LPT Low pressure sensor
SM1 Expansion valve for cooling
Color
SM2 Expansion valve for heating
Black
SW1 Pump down switch
Blue
SW3,5 Local setting switch
Brown
TB Terminal block
Green
THo-A Thermistor（Outdoor air temp.）
Gray
THo-D Thermistor（Discharge pipe temp.）
Pink
THo-IPM Thermistor（IPM）
Orange
Thermistor（Heat exchanger pipe temp. ）
THo-R1,2
Red
THo-S Thermistor（Suction pipe temp.）
White
20S Solenoid valve for 4 way valve
Yellow
52X1 Auxilliary relay（for CH）
Yellow／Green
52X3 Auxilliary relay（for 20S）
63H1 High pressure switch
The defrosting operation interval becomes shorter
by turning ON this switch. This switch should be
turned ON in the area where outside temperature
becomes below the freezing point.
When this switch is turned ON, the outdoor unit
fan will run for 30 seconds in every 10 minutes,
when outdoor temperature falls to 3 C or lower and
the compressor is not runnning when the unit is used
in a very snowy country, set this switch to ON.
Method of trial operation
1 Trial operation can be performed by using SW3-3,4.
2 Compressor will be in the operation when
SW3-3 is ON.
3 Cooling trial operation will be performed when
SW3-4 is OFF, and heating trial operation when
SW3-4 is ON.
4 Be sure to turn OFF SW3-3 after the trial operation
is finished.