Honeywell q7800f1004/u Adapter Subbase 7800 Series

Product Description

The HONEYWELL q7800f1004/u is an adapter subbase designed to connect the 7800 Series Relay Module to the Q270 Subbase in commercial burner control systems. Its primary function is to facilitate a direct retrofit of legacy RA890 burner controls with the 7800 Series Burner Control System, eliminating the need for complete system rewiring during the upgrade. This part is a key retrofit component for facilities transitioning to the 7800 Series without incurring the labor and cost of a full electrical panel rework. It weighs 1.1 pounds and ships as a single unit pack.

This adapter subbase is used in commercial and industrial burner control applications where existing Q270 Subbase wiring is already in place. It is particularly relevant in retrofit scenarios where aging RA890 controls are being replaced with the more current 7800 Series Burner Control System. Licensed controls technicians and commercial HVAC or boiler service professionals are the typical installers for this component.

Key Features

• Connects the 7800 Series Relay Module directly to the Q270 Subbase
• Enables RA890 control replacement without full system rewiring
• Simplifies retrofit work on existing burner control installations
• Active production status ensures current OEM sourcing
• Sold as a single unit pack

Compatibility

Designed for use with the Honeywell 7800 Series Relay Module and the Q270 Subbase as a retrofit replacement path for RA890 burner controls.

Installation Notes

Installation should be performed by a qualified controls technician or licensed commercial HVAC or boiler service professional. De-energize the burner control panel and follow applicable lockout/tagout procedures before beginning any wiring or subbase work. Verify that the existing Q270 Subbase is intact and properly mounted before attaching the adapter subbase. Consult the 7800 Series product documentation for wiring confirmation prior to restoring power.

Technical Specifications

• Weight: 1.1 pounds
• Unit of Measurement: Pack
• Condition: New
• Production Status: Active

Standard Information

• Brand: HONEYWELL
• Manufacturer Part Number: q7800f1004/u