MHS7800A2142, Honeywell,

Honeywell’s new S7800A2142 Keyboard Display Module (KDM) provides current system status along with first-out annunciation and system diagnosis using a five-row by 64-column readout. The KDM provides local or remote annunciation of operation and fault information, 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.

The S7800A2142 offers these advancements to the 7800 SERIES devices:

• It is compatible with already installed Honeywell 7800 SERIES systems.
• A readout of “Call Service” (Business Card) directions can be displayed instead of the standard lockout display message.
• When used with the new 7800 SERIES with Valve Proving feature, this display allows for programming the valve proving control feature and timing. The S7800A2142 is required to program the Valve Proving feature of selected 7800 Series devices.
• When used with the new 7800 SERIES with Postpurge feature, it allows for programming the Postpurge time.
• It allows for naming the S7830 Expanded Annunciator terminals to match your system drawings.
• This display enables a ModBus communication feature.
• You can configure language for English, Spanish, or French.
• It contains an on-line troubleshooting guide.

The Business Card (Call Service) and Expanded Annunciator can be made up using:

• Capital letters (A through Z in configured language).
• Lower case letters (a through z in configured language).
• Numbers (0 through 9).
• Symbols (!, @, #, $,%, etc.).

Programming can be done with the S7800 KDM mounted on a 7800 SERIES Relay Module or with a 13 Vdc power source connected to the KDM through the 203541 5-wire connector.

Since your Business Card (Call Service) S7800A2142 will be left at the job site, programming your personal three number password and personal lockout message can be set up ahead of time without being connected to a 7800 SERIES device.

The 7800 SERIES is programmed to provide a level of safety, functional capabilities and features beyond the capacity of conventional controls.