the AFS-271 is designed to handle air and combustion by-products that are non-corrosive to silicone diaphragms

The unit’s small footprint and single-gang back box mounting make it ideal for aesthetically sensitive installations where a low-profile gas/smoke detection accessory is preferred

use the "HH" series or a dedicated suction line drier

While cleaning with a light abrasive can temporarily resolve flame detection issues caused by carbon buildup

airtight connection is non-negotiable for system safety

Fenwal 22-100001-067 Ignitor Sensor Els PW 17895 the AFS-271 is designed toThe Fenwal 22 100001 067 Ignitor Sensor is a critical OEM replacement flame sensor engineered for precise flame rectification in gas fired heating systems. As a veteran grade HVAC ignition component, this sensor facilitates high accuracy flame signal detection, preventing nuisance shutdowns and ensuring the gas valve remains energized only when a stable flame is present. Designed to withstand the rigorous thermal cycling of modern combustion chambers,