Honeywell S81-U1002-1

Product Introduction:

The Honeywell S81 series is a microprocessor-based burner management system (BMS) component—typically a flame signal amplifier or control module—used in commercial/industrial gas/oil burners. Version 2.4.10 refers to the firmware revision loaded on the EEPROM/flash. It works in conjunction with Honeywell RM78xx or similar burner sequencers.

Category: Honeywell

Description

Technical Specifications:

Flame Sensing: UV (UV scanner input) or IR depending on scanner model paired
Supply Voltage: 24 V AC/DC or 120/230 V AC (model-dependent sub-variant)
Output: Flame relay (SPDT), self-check interlock contacts
Response Time: <2 s flame prove time (typical)
Ambient Temp: -20 °C to +60 °C
Mounting: Plug-in to base (socket) or DIN rail adapter
Compliance: EN 298, FM, UL listed for burner management applications

Functions:

Amplifies and validates flame rectification or UV scanner signal
Provides flame presence indication via LED
Communicates flame status to burner sequencer for safe start/run interlocks

Installation Notes:

Verify flame scanner compatibility (Honeywell C7027, C7077, etc.)
Do NOT short flame sense terminals during operation
Perform flame failure test per local code after installation

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