Smartswitch STS-220, Setup Instructions, Page: 9 / 12

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Operating Instructions:
Normal Flush:
Pressing the Normal Flush button will run the auto cycle (see page 6 for details).
Water Only:
While this button is held down the water valve/inlet pump will activate (Maximum 20
seconds per press). After activation this button will be disabled. The
Empty Only button
will need to be pressed for at least 1 second to reactivate this button. This feature can be
disabled or enabled see page 5.
Empty Only:
While this button is held down the discharge pump will activate (Maximum 20 seconds
per press).
Holding Tank Full: (Optional)
If the vessel is fitted with a Holding Tank Full Sensor Switch, it can be wired to the
controller as per diagram FIG 1
– page 10. If this sensor is on, due to a full tank, it will
disable the controller until the tank has been emptied. If this feature is not required leave
the Float Switch Input unconnected.
Electrical Specifications:
Supply Voltage = 12-30 Volts DC (Auto-sensing)
Quiescent Current = .015 Amps
Input = EMI Protected
Max Motor Output = 44 Amps
Max Valve Output = 44 Amps
Max EST Output = 12 Amps