While some systems use a local sense rod

this unit is designed for two-position control and supports both 24VAC and 24VDC power inputs

this part number includes the right angle mounting bracket and the necessary ball joint linkage for immediate field replacement

Start by verifying 24 VAC at the input terminals

The D-9502-609 is designed strictly for use with Johnson Controls D-3153

AERCO GP-122435-S Ignitor 320788-702 While some systems use aThe AERCO GP 122435 S Ignitor is a high performance spark igniter engineered specifically for AERCO boilers and water heaters, including the popular Benchmark series. As a critical ignition component, this part generates a high energy spark to initiate the combustion process, ensuring your heating system operates at peak HVAC efficiency. Designed for reliability, the GP 122435 S operates on a 24V AC DC input and is built to withstand extreme internal