The intake holes must face directly into the airflow

The Danfoss 068U1036 Orifice Assembly is a critical metering component designed specifically for TUA and TUAE series thermostatic expansion valves

or visible vibration during the heating cycle usually indicate a bent or out-of-balance blade

leak-proof seals in heat exchangers

and Delay on Make/Break modes using an onboard DIP switch and potentiometer

Modine 3H0352600000 Electrode Assy. 30067439-890 The intake holes must faceThe Modine 3H0352600000 is an OEM Direct Spark Electrode Assy. engineered for precision ignition in heavy duty gas fired heating systems. This component is the primary 3H35260 replacement, serving as the critical interface between the direct spark ignition (DSI) module and the burner assembly. As a veteran grade Modine unit heater part, it is designed to withstand high thermal cycles while maintaining a consistent spark gap for reliable combustion. In