The controller is connected to three valve by interlock wires to S1\S2, each valve system shall be installed for inlet
water Electric(magnetic) valve controlled by internal output, To realization of dual use one standby (means: three sets of equipment There are always two running and another one is waiting for use）

15/20/40/50 large valve system, electric valve is connected to the "电动阀" on the output plate, the small valve system
is connected to the output relay and set at the same time. The output mode is set for Mode3.