AEC Self Cleaning Continuous Filters - Manual (Page 21)

Self Cleaning Continuous Filter Chapter 3: Installation 20
8. On collectors with more than one air header, one wire from each solenoid is
connected to the timer marked “SOL COM.” The other wire from the first valve on
each header should be connected to the timer terminal marked “Solenoids 1”, the
second valve on each header to “Solenoids 2”, etc. On certain collectors the number
of solenoid valves on each header differ. For example: a collector may have a total
of 26 valves with three air headers. Two would have 9 valves, the third 8. The
solenoids would be connected in sequence to the timer, with three wires on positions
one through eight. On the ninth post there would be only two solenoid wires. The
program wire would be connected to the ninth “COMPARTMENT USED” socket.