This series valve is available as a pressure differential pilot actuated valve as

well as an Actuator driven valve

In the NORMAL POSITION, discharge is routed to the main condenser and the auxiliary is pumped out. No solenoid valve is needed. In the ENERGIZED POSITION, discharge is routed to the auxiliary condenser and the return routed to the main condenser. No check valve is needed. The pump out is closed. This diagram is a typical heat reclaim configuration.