while maintaining the same 3V cross-section dimensions

it typically requires a common wire connection or battery power depending on the specific Reznor heater control board configuration

swapping in this genuine Carrier part restores factory-spec airflow and efficiency

a wet-to-wet differential pressure transducer is required

a Danfoss AME series actuator should be specified

Siemens Combustion LFL1.335 Control 318820-201 while maintaining the same 3VThe Siemens Combustion LFL1. 335 Control is a rugged, electro mechanical primary flame safeguard engineered for the management of medium to high capacity forced draft burners. Designed specifically for 220V gas burner control applications, this unit provides precise sequencing for multistage or modulating systems across gas, oil, or dual fuel configurations. It features a fixed 37 second pre purge time (t1) and a 2. 5 second safety time (TSA),