The Honeywell C7027A1049 combines Minipeeper UV flame sensing with a threaded rear spud for the electrical conduit connection. It has 2.44 m (8 ft) leads, a −18 to +102 °C ambient rating and a separate ½–14 NPSM front sight-pipe collar.
Product Specification
- Operating ambient temperature: −18 to +102 °C.
- Two color-coded 2.44 m (8 ft) leads; 18 AWG, NEC Class 1, plastic insulation rated for 105 °C.
- Integral ½–14 NPSM internally threaded collar for a ½-inch sight pipe.
- ½-inch threaded rear spud.
- Maximum sealed pressure: 5 psi (34.5 kPa) when correctly installed.
- Sealed UV sensing tube; replacement is by complete detector assembly.
Flame Safeguard Compatibility
Use with R7849A or R7849B UV amplifiers in compatible Honeywell 7800 control systems. Honeywell also documents RA890G controls and R7249A, R7290A and R7749B amplifier combinations.
Operation is intermittent: the burner must shut down at least once every 24 hours. The detector has no dynamic self-checking shutter. R7849B checks the amplifier circuit; flame-failure response time is determined by the selected amplifier and relay module.
Compare Configurations
The C7027A1072 extends the minimum ambient rating to −40 °C while retaining 2.44 m leads and a threaded rear connection. View C7027A1072 specifications.
Compare all seven C7027A models by lead length, temperature range and mounting configuration.

