AAON CN-140 - Manual (Page 23)

23
LAC Valve
The LAC valve is a non-adjustable three
way valve that modulates to maintain
receiver pressure. As the receiver pressure
drops below the valve setting (295 psig for
R-410A), the valve modulates to bypass
discharge gas around the condenser. The
discharge gas warms the liquid in the
receiver and raises the pressure to the valve
setting. The following schematic shows an
example system using the LAC valve.
Figure 7 - Piping Schematic of Example System Using the LAC Valve.