Samsung Electronics 285
Wiring Diagram
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, 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 Heat Exchanger (OHX)
Outdoor Heat Exchanger (OHX)
Outdoor Heat Exchanger (OHX)
Outdoor Heat Exchanger (OHX)
Outdoor Heat Exchanger (OHX)
Outdoor Heat Exchanger (OHX)
High Temperature & pressure Gas
High Temperature & pressure Liquid
Low Temperature & pressure Gas
Low Temperature & pressure Liquid
HEAT
FAN ON
↑
↑ ↑
↑
↑
↑
↑
↑
↑
↑
↑
↑
↑
↑
↑
↑
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 1
(IPMC1)
IPM Cooler 2
(IPMC2)
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)
(V_EVI2)
Solenoid
Valve -
EVI 1(V_EVI1)
Compressor 1
(COMP1)
(COMP2)
(T_D2)
(T_CT2)
Thermistor -
Discharge
pipe 1 (T_D1)
(PW_H2)
(OS2)
(CV_D2)
Oil Separator 1
(OS1)
Pressure Sensor -
High (PS_H)
Solenoid Valve - 4Way (V_4W)
Pressure
Switch -
High 1
(PW_H1)
Thermistor -
Compressor
Top 1
(T_CT1)
Check Valve -
Discharge 1
(CV_D1)
Accumulator
(AC)
↑ ↑
HEAT
FAN ON
HEAT
FAN ON
OFF
FAN OFF
HEAT
FAN ON
OFF
FAN OFF
F1/F2
Indoor Outdoor communication line
OF1/OF2
Outdoor Outdoor communication line
R1/F2
Solution Outdoor communication line
6-8 Field Wiring (cont.)
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