Samsung AM072BXV Series Service Manual page 207

Wiring Diagram
6-6 Field Wiring (cont.)
Electrical wiring work (cont.)
Specification of Cable and Connecting method
- For communication cable, 2-core sheathed vinyl cable should be used which satisfies nominal area of 0.75~1.25 ㎟ thickness. If 2 or more than
3 communication are connected with one cable which is 4, 6 or more strands, communication malfunction could be caused. Only 2-core sheathed vinyl cable
should be used for one communication line.
- Maximum connecting length is limited to 1,000m(3281'), so you should follow this limit not to cause malfunction of communication.
- Maximum number of units that can be connected to the outdoor main unit is 64, so do not exceed this limit.
- Communication cable should be connected in series as in the picture below, and malfunction of communication can be occur if many units are connected to
the same terminal.
- Communication cable between indoor and outdoor units and communication cable between outdoor units has no polarity.
Outdoor Fan Motor 1
↑
Thermistor - Suction pipe (T_S)
Solenoid Valve - 4Way (V_4W)
Pressure Sensor -
High (PS_H)
Solenoid Valve -
Hot Gas bypass (V_HG)
Check Valve -
Discharge 1
(CV_D2)
(CV_D1)
F1/F2 Indoor Outdoor communication line
Oil Separator 1
(OS2)
(OS1)
OF1/OF2 Outdoor Outdoor communication line
Pressure
Switch -
R1/F2 ↑ Solution Outdoor communication line ↑
(PW_H2)
High 1
(PW_H1)
Thermistor -
(T_D2)
Discharge
pipe 1 (T_D1)
Thermistor -
Compressor
(T_CT2)
Top 1
(T_CT1)
Compressor 1
(COMP2)
(COMP1)
Solenoid
Valve -
(V_EVI2)
EVI 1(V_EVI1)
Samsung Electronics
Outdoor Fan Motor 2
(OFM1) (OFM2)
Thermistor - Ambient (T_A)
Thermistor -
Cond Out (T_CO)
Heat Exchanger - Main (HX_M)
Check Valve -
EEV Bypass (CV_EB)
↑
Solenoid Valve -
EVI Bypass
Thermistor -
(V_EB)
EVI Out (T_EO)
Accumulator
(AC)
Pressure Sensor -
Low (PS_L)
Solenoid Valve -
Accumulator oil Return (V_AR)
Ball Valve -
Gas pipe (BV_G)
Electronic Expansion
Valve - Main (E_M)
IPM Cooler 1
(IPMC1)
IPM Cooler 2
(IPMC2)
Heat Exchanger -
Intercooler (HX_IC)
Thermistor -
EVI In (T_EI)
Electronic
Expansion
Valve -
EVI (E_EVI)
Thermistor -
Liquid pipe (T_L)
Ball Valve -
Liquid pipe (BV_L)
High Temperature & pressure Gas
High Temperature & pressure Liquid
Low Temperature & pressure Gas
Low Temperature & pressure Liquid
HEAT
FAN ON
Outdoor Heat Exchanger (OHX)
HEAT
FAN ON
Outdoor Heat Exchanger (OHX)
HEAT
FAN ON
Outdoor Heat Exchanger (OHX)
OFF
FAN OFF
Outdoor Heat Exchanger (OHX)
HEAT
FAN ON
Outdoor Heat Exchanger (OHX)
OFF
FAN OFF
Outdoor Heat Exchanger (OHX)
201