DC Inverter Side Discharge VRF Ⅱ for North America
105
3 Power Distribution of Unit
3.1 Power distribution of unit
The control logical relationship among parts inside the electric box of unit is showed by the
mongline diagram (CAD source file).
The main loop is showed by bold line (line width: 1mm); the control loop is showed by slim line
(line width: 0.2mm).
Power wiring
board
Filter plate Drive board Compressor
Main control board
Temperature sensor, electric
expansion valve, high pressure and
low pressure switch and so on
4-way valve, by-pass valve,
electric heating belt and control
signal
Fan
（Bold line is the power line and the slim line is the control line）
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