The Honeywell C7035A1031 is the low-temperature C7035A configuration with 1.83 m (6 ft) leads. Its −40 to +121 °C operating range extends the cold-weather capability of the standard C7035A1023 while retaining the same NPSM mounting arrangement and serviceable UV tube.
Product Specification
- Operating ambient temperature: −40 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.
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. Use the −40 °C-rated 129464N when maintaining this model’s low-temperature capability. These are replacement sensing tubes, separate from the complete C7035A detector assembly.
Compare Configurations
C7035A1056 extends the lead length from 1.83 m to 3.66 m while retaining the −40 °C minimum ambient rating and NPSM connections. View C7035A1056 specifications.
Compare all six C7035A models by temperature, lead configuration and mounting.
