26 |   PRODUCT DATA
Single Zone Mega, Standard Eciency, and Mega 115V Wall Mounted Engineering Manual
Due to our policy of continuous product innovation, some specications may change without notication. 
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REFRIGERANT FLOW DIAGRAMS
Mega, Standard Eciency Models
Refrigerant Flow Diagram for LS090 ~ 240HEV2 and LS090 ~ 240HFV3  
models
Mufflers
Strainer
Field  Pipin g
(Copper Tubing)
Field  Piping
(Copper Tubing)
M
M
Heat 
Exchanger 
(Evaporator)
Heat 
Exchanger 
(Condenser)
Compressor
2-Way  Valve
Reversing 
Valve
(4-Way
 Valve)
Indoor  Unit Outdoor  Unit
: Cooling
: Heating
EEV
TH1
TH2
TH4
TH5
TH6
Liquid  Side
Vapor  Side
3-Way  Valve
TH3
Propeller
Fan
Cross 
Flow
Fan
Flare
Joint
Flare
Joint
(Electronic
Expansion
Valve)
Strainer
Table 11: Mega LS090 ~ 240HEV2, Standard Efciency LS090 ~ 240HFV3 Thermistor Details.
Thermistor Description PCB Connector
TH1
Indoor air temperature thermistor CN-TH1 (Indoor)
TH2
Evaporator temperature thermistor CN-TH3 (Indoor)
TH3
Water Level Sensor (Option) CN-TH2 (Indoor)
TH4
Outdoor air temperature thermistor
CN-TH1 (Outdoor)
TH5
Condenser temperature thermistor
TH6
Discharge pipe temperature thermistor CN-TH2 (Outdoor)
Table 12: Mega LS090 ~ 240HEV2, Standard Efciency LS090 ~ 240HFV3 Refrigerant Piping Sizes.
Model No. Vapor (Inch [mm]) Liquid (Inch [mm])
LS090HEV2, LS120HEV2
LS090HFV3, LS120HFV3
Ø3/8 (Ø9.52) Ø1/4 (Ø6.35)
LS180HEV2, LS240HEV2
LS180HFV3, LS240HFV3
Ø1/2 (Ø12.7) Ø1/4 (Ø6.35)