Specifications

65
Symbol Name
MC1,2 Compressor motor
MF1 Fan motor (indoor)
MF2,3 Fan motor (outdoor)
52C1,2 Contactor (compressor)
52F1 Contactor (fan I/D)
51C1,C2 Overload Protector (compressor)
TB1,2,3 Terminal block
F1 Fuse (3.15A)
51F Overload Protector (fan I/D)
63H1,2 High-pressure switch
CH1,2 Crankcase heater
26L1,2 Sensor (freeze protection)
PCB Printed Circuit Board
47 Phase Protector
DT1,2 Discharge Thermostat
X1,2 Auxilliary Relay (self hold)
49C1,C2 Compressor Internal Overload
CM1,2 Compressor Control Module
MRT250
A
MRT300A
(STANDARD: IC CONTROL)
*ART300A only
*ART300A only
Caution,
1. To protect each Fan motor and Compressor from abnormal current, Overloadd
protectors are installed. Therefore, do not change factory set value of the overload
protector.
Note : 1. The dotted lines show field wiring
2. Color of earth wire is yellow and green twisting.
3. Specification subject to change without notice.
4. Each wire is addressed.
5. shows wiring for model RT300A only
In the case of ART250A : no wire connection at TB3(4) and (5), & 49C is replaced by single wire.