Overview
The Honeywell C7027A 1023 is a Mini-Peeper ultraviolet flame sensor designed for flame supervision on gas, oil, and coal-fired burners. The C7027A detects ultraviolet radiation emitted by combustion flames. Used with Honeywell flame safeguard controls, it provides flame supervision for gas, oil, or combination gas-oil burners. This compact detector is ideal for applications requiring reliable flame detection in industrial HVAC and burner management systems.
Key Features
- Rugged, compact design with encapsulated sensing tube for maximum protection
- Detects UV radiation in the 310 nm spectral range
- Compact size makes it particularly suitable for blast tube mounting
- Detectors can be wired in parallel for difficult sighting applications
- Seals against pressures up to 5 psi (34.5kPa) when correctly installed
- End-viewing flame detection design for optimal response
Technical Specifications
- Temperature Range: 0–215°F (-17° C to 102° C)
- Connection Type: 1/2″ NPT screwed integral collar
- Lead Wire Length: 96″ leads
- Lead Wire Gauge: 18 AWG, color-coded Silicon Rubber insulated
- Maximum Pressure Rating: 5 psi (34.5 kPa)
- UV Detection Wavelength: 310 nm
- Flame Detection Method: End viewing
- Intended Use: Intermittent operation only
Typical Applications
The C7027A 1023 is used with coal-fired burners, gas-fired burners, and oil-fired burners. Use with Honeywell Flame Safeguard primary safety controls and burners requiring ultraviolet flame detection. The unit mounts on a 1/2 in. sighting pipe by using an integral collar. Ideal for burner management systems requiring reliable flame supervision in commercial and industrial settings.
Compatibility & Replacements
Compatible With
- Honeywell BCS 7700 Series flame safeguard controls
- Honeywell BCS 7800 Series controls
- Flame amplifiers: R7249A, R7249B, R7849A, R7849B, R7749B, R7259, R7290
- Gas, oil, and coal-fired burner systems
- 1/2″ NPT sighting pipe mounting applications
Replaces / Drop-In Replacement For
- C7027A1080
- C7927A1016
Works With
- Honeywell flame safeguard primary safety controls
- Honeywell Thermal Solutions burner management systems
- Parallel-wired detector configurations for complex sighting applications
- HVAC and boiler control systems requiring UV flame detection
















