Nibe F2040 - 4-Way Valve Function

4-way valve function
A B
Vacuum from the suction side
Over pressure from the hot gas side
1.
When the current is broken a spring presses the piston to the left.
2.
This opens the gas pressure to chamber B and releases the pressure in chamber A.
3.
The slide moves to the left which changes how the refrigerant moves. In this case it runs directly from evaporator
to suction gas.
A
B
Vacuum from the suction side
Over pressure from the hot gas side
1.
When the current is switched on a solenoid pulls the piston to the right.
2.
This opens the gas pressure to chamber A and releases the pressure in chamber B.
3.
The slide moves to the right which changes how the refrigerant moves. In this case it runs directly from suction
gas to condenser.
33Chapter 5 | Component descriptionNIBE™ F2040