Samsung AM080FXWANR - Page 220

Piping Diagram
Samsung Electronics 219
Main cooling operation
ƒ Purpose
Switch to heating mode on some indoor units while using cooling mode
ƒ Control specifications in detail
7-3 Functions (cont.)
7-3-2-3 Normal operation modes (cont.)
7-3-2 Control (cont.)
Actuator Abbrev. - Normal Cooling
Compressor COMP
Operation
Target high pressure control
(default : 7kgf/ ᎚ )
Range 14 - 120Hz
Electronic Expansion Valve
– Main (Main EEV)
E_M
Oper
ation Cooling & Heating capacity balance control
Range 300 ~ 2000step
Electronic Expansion Valve
– EVI (EVI EEV)
E_EVI
Operation
*Subcooling control
(default : SC 20k)
Range 0-480step
Solenoid Valve - 4wa
y V_4W Operation Off
Solenoid Valve – EVI Bypass V_EBOperation
On (Open): *T_w > 40ఁ or 50Hz ײ
Off (Close): T_w < 38ఁײ and 65Hz װ
Solenoid Valve – EVI V_EVI Operation On (Open)
Solenoid Va
lve – Hot Gas Bypass V_HG Operation Off (Close)
Solenoid Valve – Accumulator Oil Return V_AR Operation On (Open)
Solenoid Valve – Hot Gas Bypass 2V_HG2 Operation Main Cool
ing : On(Open), Cooling : Off(Close)
Solenoid Valve-Liquid Tube V_L Operation Off (Close)
Solenoid Valve – Main Cooling V_MC Operation Off (Close)
Solenoid Valve-Hot Ga
s ChargingV_HCOperation Off(Close) / On(Open) when high pressure is low