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5. Refrigerating Cycle Block Diagram
INDOOR UNIT
OUTDOOR UNIT
Heat
exchanger
(Evaporator)
Gas side
3-way valve
2-way valve
Liquid side
Capillary tube
Cooling
Gas leak check point
Cross fan
Heat
exchanger
(Condenser)
Propeller fan
Heating
Capillary tube
Check valve
Compressor
4-way valve
T
1
T2
Refrigerating cycle temperature and pressure
STD Pressure Piping Temp(°F) Use Temp. Condition(°F)
MODEL Operating Condition (psi)
T1 T2
Indoor Outdoor
3-Way Valve DB WB DB WB
Standard 57~71 46~54 46~54 80 67 95 75
Cooling Max over load - - - 80 67 115 75
AQ24A2RC
Low temp - - - 67 57 67 57
Standard 270~327 90~97 140~158 70 59 47 43
Heating Max over load - - - 80 - 75 65
Low temp - - - 70 59 35 33
Standard 64~78 46~54 46~54 80 67 95 75
Cooling Max over load - - - 80 67 95 75
AQ18A6RC
Low temp - - - 67 57 67 57
Standard 270~327 90~97 140~158 70 59 47 43
Heating Max over load - - - 80 - 75 65
Low temp - - - 70 59 35 33
Standard 64~78 46~54 46~54 80 67 95 75
Cooling Max over load - - - 80 67 95 75
AQ18A0RCD
Low temp - - - 67 57 67 57
Standard 270~327 90~97 140~158 70 59 47 43
Heating Max over load - - - 80 - 75 65
Low temp - - - 70 59 35 33
DB81-00188A(4)-1** 10/30/02 10:44 AM Page 23