For the 1/4" cap screws included with the H 3/8

this blower fan is designed for high-RPM operation to draw essential combustion air through the burner housing

Serviceable Design: Features a replaceable indicator element (kit K-SA-4) facilitating maintenance without removing the body from the line

while using a Natural Gas orifice with LP can cause dangerous over-firing

Is the hose included with the test cap

Reznor 45602 Limit Switch For the 1/4" cap screwsThe Reznor 45602 Limit Switch is a critical safety component designed for precise thermal regulation in Reznor unit heaters and HVAC systems. Built for heavy duty commercial and industrial environments, this 120 180F auto limit switch serves as a high temperature limit control, monitoring internal heat exchanger temperatures to prevent overheating. As a genuine OEM Reznor replacement part (also referenced as RZ045602), it ensures exact calibration and