Installation manual

FuelMaster
®
Installation Manual
83
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Two relay assemblies are used to accomplish two-stage valve control. This limits the maximum
number of possible hose controls to four. An option in the firmware must be turned on to enable
two-stage valve control. The point at which the fast valve turns off before the slow valve is called
the setpoint. The setpoint may be set to any value between 0.1 and 10.0 units (dollars or
gallons). Additional explanation for retail functions associated with two-stage valve control are
covered in Appendix E.
Figure 4-12. Wiring Diagram – Two-Stage Valve Control
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