The Honeywell S7800A Keyboard Display Module (KDM) provides current system status. It also has first-out annunciation and system diagnosis using a two-row by twenty-column readout.
Honeywell S7800A Features
The S7800A1142 KDM is required to program the Valve Proving feature of select 7800 Series devices.
In addition, Honeywell KDMs provides current status of burner sequence and timing information. Moreover, it holds information and lockout information, as well as selectable or preemptive messages.
In summary, the KDM provides local or remote annunciation of operation and fault information. Moreover, it provides remote reset, report generation, burner control data and diagnostic information. The KDM is part of the 7800 SERIES of microprocessor-based burner controls for gas, oil, coal or combination fuel single burner applications.
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S7800A KDM Types:
S7800A1001 Keyboard Display Module
S7800A1142 Keyboard Display Module