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Spare parts for gas and oil burners and boilers: gas valves, nozzles, ignition electrodes and transformers, pressure switches, flame detectors, fuel pumps, servomotors and burner control boxes.

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Honeywell UV cell UVZ780 18814

SKU 18814 Model UVZ780 Brand Honeywell

Photos

Key specifications

Detection principle	UV
Application type	Oil and industrial burners
Detection principle	ultraviolet
Catalogue article numbers	18814, 852.211.003
Supply voltage	220–240 V
Sensing element	UV cell
Ambient temperature	-20–60 °C
Frequency	40–60 Hz

all specifications (8) ↓

655.49 EUR

595.90EUR

in stock · 2

incl. 21% VAT · 492.48 EUR excl. VAT · shipping calculated at checkout

Worldwide shipping from stock
Original manufacturer part
Dispatch within 24 h for stocked items

Description

This UV cell is a flame sensor for oil and industrial burners. It detects ultraviolet radiation from a flame and operates with a supply voltage of 220–240 V at 40–60 Hz. The sensing element is a UV cell, and the ambient temperature range is -20 to 60 °C. The model is UVZ780 with article numbers 18814 and 852.211.003.

Further details

Application	automatic monitoring of flame presence in burners and boilers
Key parameters for selection	Spectral range, sensitivity, response time, cable length, connector type, mounting sleeve design
Maintenance	regular cleaning of the viewing window and checking signal strength
Material	high-quality materials resistant to high temperatures and aggressive environments
Mounting	Direct line of sight to combustion zone required
Operating principle	During the start sequence, the UV cell signals whether ignition has occurred within the safety time; if no flame is detected, the control goes into lockout. When flame is lost, the system immediately shuts off fuel supply.
Response characteristic	Detects ignition during start sequence, triggers lockout if no flame detected
Typical failure modes	Contaminated/fogged window, aged cell with weakened signal, damaged sheath or cable

Choosing and fitting

Parts of this type are selected by matching the detector's spectral range and sensitivity to the burner control's input requirements. The response time, cable length, connector type, and mounting sleeve or housing design must also be compared before ordering. The cell must be positioned with an unobstructed view of the flame, and it must signal ignition within the safety time during the start sequence.

Signs of failure

Typical failure modes include a contaminated or fogged viewing window that reduces sensitivity, an aged cell that delivers a weakened signal, or a damaged sheath or cable that interrupts the electrical connection. When the flame is not detected, the control goes into lockout. Regular cleaning of the viewing window and checking the signal strength can help avoid nuisance lockouts.

Manufacturer documentation

All specifications

Detection principle	UV
Application type	Oil and industrial burners
Detection principle	ultraviolet
Catalogue article numbers	18814, 852.211.003
Supply voltage	220–240 V
Sensing element	UV cell
Ambient temperature	-20–60 °C
Frequency	40–60 Hz

Part numbers

SKU	18814
Additional article	852.211.003
Model	UVZ780