Piping Diagram
Samsung Electronics 209
Solenoid Valve – Main EEV
ƒ Purpose
In main cooling mode, enable the Main EEV to control the amount of refrigerant flowing in the cooling indoor units.
ƒ Concept
- In main cooling mode,
the valve is closed to prevent refrigerant from flowing using Check Valve – EEV Bypass and enable
the Main EEV to control the amount of refriger
ant flowing into the cooling indoor units.
- If the valve is opened, most refrigerant is bypassed via the valve which flows into the cooling indoor units
. As a result, there is insuf-
ficient refrigerant in active indoor units that are under heating mode.
- HR Only
ƒ Control specifications in detail
In main cooling mode, the valve is
Off (closed).
Solenoid Valve – Main Cooling
ƒ Purpose
In main cooling mode, enable operation of heating indoor units.
ƒ Concept
- In main cooling mode, the valve is opened to send the high pressure to hea
ting indoor units and enable heating.
- HR Only
ƒ Control specifications in detail
In main cooling mode, the valve is On (opened)
7-3 Functions (cont.)
7-3-2-1 Actuator (cont.)
7-3-2 Control (cont.)
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