Mitsubishi Heavy Industries SRK20ZIX-S Service Manual page 5

POWER SOURCE 1～220ｰ240V 50Hz／1～220V 60Hz
TERMINAL
BLOCK
T
1 L
TO INDOOR UNIT
2 N
[ ]
2
POWER WIRES 1
N
3
3
SIGNAL WIRE
（Y／G）
Power cable, indoor-outdoor connecting wires
MAX running current Power cable size
Model
（A）
（mm ） 2
20
25 8 2.0
35
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.
L
T1 T2
t゜
250V 15A
（BK） R.IN
NOISE
FILTER
（WH） S.IN
（RD） C-2
（Y／G） G1
CN20S CNTH CNEEV
20S t゜ t゜ t゜
EEV
TH1 TH2 TH3
Power cable length indoor-outdoor Earth wire size
wire size x number
（m） （mm）
32 φ1.6mm x 3 φ1.6mm
PWB ASSY
POWER
TRANSISTOR
F2
P U （RD）
U
250V 20A
（WH）
V
NU
V
NV
W （BK）
W
NW
F3 250V 1A
PAM
F4
CIRCUIT
CNFAN
250V 10A
SWITCHING POWER
CIRCUIT
M
Item Description
CM Compressor motor
CNEEV～20S Connector
EEV Electric expansion valve （coil）
FMo Fan motor
L Reactor
T Terminal block
TH1 Heat exchanger sensor （outdoor unit）
TH2 Outdoor air temp.sensor
TH3 Discharge pipe temp.sensor
20S Solenoid valve for 4 way valve
M
3～
CM
Mark Color
BK Black
OR Orange
M
RD Red
FMo
WH White
Y Yellow
Y／G Yellow／Green