Honeywell S7800A1142 Burner Control Display Module

Configured for local operator interface and real-time status indication in 7800 SERIES burner control assemblies, the Honeywell S7800A1142 (S7800A-1142 Burner Control Display Module) provides direct physical/electrical execution. It mounts directly onto the front of 7800 SERIES Relay Modules to communicate system status, lockout causes, flame signal strength, and sequence timing via a 2-line by 20-character vacuum fluorescent display (VFD).

Hardware Specifications

Process Control and DCS Interface Features

The module provides direct serial communication with Honeywell 7800 SERIES control loops. Data integrity across local interfaces relies on continuous optical or galvanic isolation embedded within the primary module backplane. Signal transmission to supervisory systems utilizes ControlBus protocol capabilities, maintaining precise event sequence reporting, diagnostic codes, and flame signal metrics without introducing signal degradation or loop loading issues.

Frequently Asked Questions

Q: Can the S7800A1142 module be installed or removed under power (hot-swapped)?

A: Yes, the S7800A1142 module supports hot-swapping directly onto the 7800 SERIES Relay Module standard edge connector without disrupting the primary burner control sequence.

Q: How does the display indicate system fault conditions?

A: During fault conditions, the VFD displays a specific lockout code along with textual diagnostic details indicating the exact sequence segment and cause of the shutdown.

Field Installation Guidelines

1. Ensure the mounting face of the 7800 SERIES Relay Module is clean and free of debris.
2. Align the rear connector pins of the S7800A1142 with the mounting slot on the front of the relay module.
3. Press firmly until the retaining tabs snap securely into place to prevent accidental vibration loosening.
4. Route any optional remote communication cables clear of high-voltage ignition leads to avoid electromagnetic interference.