🔥 Honeywell C7027A1023 Ultraviolet Minipeeper Flame Sensor
The Honeywell C7027A1023 Minipeeper is a compact ultraviolet (UV) flame sensor designed for precise and reliable flame detection in gas, oil, and combination burners. Its small footprint makes it ideal for blast tube mounting, while ensuring accurate UV flame supervision when paired with Honeywell Flame Safeguard controls.
✅ Key Features
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✅ Compact Minipeeper Design – Ideal for tight or confined burner installations.
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✅ Reliable UV Flame Detection – Detects ultraviolet radiation emitted from all fuel flames.
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✅ Pressure-Tight Seal – Rated for up to 5 psi (34.5 kPa) when installed correctly.
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✅ Long 8-Foot Lead Wire – Provides flexible installation for difficult sighting applications.
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✅ Wide Operating Temperature Range – Performs reliably from 0°F to 215°F.
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✅ Easy ½-Inch NPT Mounting – Threads directly onto a sighting pipe via an integral collar.
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✅ Parallel Wiring Capability – Multiple detectors can be connected in parallel if needed.
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✅ Compatible with Honeywell Flame Safeguard Controls – Works with R7249, R7849, R7259, R7290, and other series.
⚙️ Specifications
| Specification | Detail |
|---|
| Model |
C7027A1023 |
| Sensor Type |
Ultraviolet (UV) Flame Detector |
| Temperature Range |
0°F to 215°F (−18°C to 102°C) |
| Mounting |
½" NPT Female, Integral Collar |
| Seal Rating |
Up to 5 psi (34.5 kPa) |
| Lead Wire Length |
96" (8 feet) |
| Used With |
Honeywell Flame Safeguard Primary Safety Controls |
| Body Style |
Compact Minipeeper |
| Applications |
Gas, Oil, or Combination Gas-Oil Burners |
🔌 Compatible Honeywell Flame Safeguard Controls
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R7249A / R7249B Series
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R7849A / R7849B Series
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R7749B Series
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R7259 Series
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R7290 Series
♻️ Replacement / Interchangeable Models
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Honeywell C7027A1080
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Honeywell C7927A1016
⚠️ Common Symptoms of a Faulty Flame Sensor
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🔸 Burner fails to light or hold flame
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🔸 Intermittent flame detection (erratic operation)
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🔸 Frequent lockouts from the primary safety control
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🔸 Burner operates without flame verification
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🔸 Cloudy or contaminated UV sensor
❓ FAQ (Frequently Asked Questions)
Q: How long does a UV flame sensor last?
A: Typically 3–5 years depending on usage and environment. Replace sooner if flame detection becomes unreliable.
Q: Can the sensor lens be cleaned?
A: Yes — gently wipe with a soft, lint-free cloth. Avoid solvents or abrasive materials.
Q: Is the C7027A1023 compatible with older C7027A models?
A: Yes, it directly replaces C7027A1080 and C7927A1016.
Q: Can multiple sensors be installed together?
A: Yes — detectors can be wired in parallel for difficult sighting applications.
🛒 Shopping & Installation Tips
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Verify your Flame Safeguard control model before ordering.
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Ideal for tight installation spaces due to its compact size.
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Include in annual burner maintenance checks to prevent lockouts.
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Keep a spare sensor on hand for industrial or commercial applications.
