The Honeywell C7035A1049 is the DIN version of the standard-temperature C7035A UV flame detector. It combines 1.83 m (6 ft) leads, a 1–11½ NPSM sight-pipe collar and a field-replaceable sensing tube, with an operating ambient range of −18 to +121 °C.
Product Specification
- Operating ambient temperature: −18 to +121 °C.
- End-viewing UV sensor with a protective shield and field-replaceable sensing tube.
- 1–11½ NPSM internal collar for the sight pipe.
- Rear conduit connection: ½–14 NPSM internal thread.
- Two color-coded 1.83 m (6 ft) leads, 18 AWG, NEC Class 1, silicone-rubber insulation rated for 150 °C.
- NEMA 4 and 4X housing, with rain-tight construction.
- Maximum sealed pressure: 5 psi (34.5 kPa) when correctly installed.
- DIN version identified in Honeywell Minipeeper product data.
Control Compatibility and Operating Duty
For R7849A or R7849B UV amplifiers in compatible Honeywell 7800 systems. Honeywell also documents combinations with RA890G controls and R7249A, R7290A and R7749B amplifiers.
The burner must cycle off at least once every 24 hours. C7035A has no dynamic self-checking shutter; R7849B checks the amplifier circuit. The amplifier and relay module determine the flame-failure response time.
Replacement UV Sensing Tube
Honeywell lists 129464M for −18 to +121 °C and 129464N for −40 to +121 °C. 129464M covers this model’s stated ambient range. These are replacement sensing tubes, separate from the complete C7035A detector assembly.
Compare Configurations
C7035A1064 is the DIN version with BSP front and rear connections and a −40 °C minimum ambient rating. View C7035A1064 specifications.
Compare all six C7035A models by temperature, lead configuration and mounting.

