9. Piping Diagram
40
Heating System
• 18HP with indoor units
↑↑↑ ↑
↑
O u tdoor Hea t E x ch an ger ( O HX )
O u tdoor Hea t E x ch an ger ( O HX )
O u tdoor Hea t E x ch an ger ( O HX )
O u tdoor Hea t E x ch an ger ( O HX )
O u tdoor Hea t E x ch an ger ( O HX )
O u tdoor Hea t E x ch an ger ( O HX )
High Temperature & Pressure Gas
High Temperature & Pressure Liquid
Low Temperature & Pressure Gas
Low Temperature & Pressure Liquid
HEAT
FAN ON
↑
↑
↑
↑
↑
↑
↑
↑
↑
HEAT
FAN ON
HEAT
FAN ON
OFF
FAN OFF
HEAT
FAN ON
OFF
FAN OFF
↑
↑
Ball Valve -
Gas pipe (BV_G)
Outdoor Fan Motor 1
(OFM1)
Outdoor Fan Motor 2
(OFM2)
Thermistor - Ambient (T_A)
Thermistor -
Cond Out (T_CO)
Heat Exchanger - Main (HX_M)
Thermistor -
Suction pipe (T_S)
Check Valve -
EEV Bypass (CV_EB)
Electronic
Expansion
Valve -
Main (E_M)
IPM Cooler
(IPMC)
Heat Exchanger -
Intercooler (HX_IC)
Thermistor -
EVI In (T_EI)
Thermistor -
Liquid pipe (T_L)
Electronic
Expansion
Valve -
EVI (E_EVI)
Thermistor -
EVI Out (T_EO)
Solenoid Valve -
EVI Bypass
(V_EB)
Ball Valve -
Liquid pipe (BV_L)
Solenoid Valve -
Accumulator oil Return (V_AR)
Pressure Sensor -
Low (PS_L)
Solenoid Valve -
Hot Gas bypass (V_HG)
Solenoid
Valve -
EVI (V_EVI)
Compressor
(COMP)
Thermistor -
Discharge
pipe (T_D)
Oil Separator
(OS)
essure Sensor -
gh (PS_H)
Solenoid Valve - 4Way (V_4W)
Pressure
Switch -
High (PW_H)
Thermistor -
Compressor
Top
(T_CT)
Check Valve -
Discharge
(CV_D)
Accumulator
(AC)
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