Refined Diagnostics: Facilitates HVAC system troubleshooting by allowing for the direct observation of the hot surface ignition or spark sequence without disassembly

secure the bulb to a horizontal section of the suction line at the 10 o'clock or 2 o'clock position

Whether you are performing a boiler system diagnostic or a routine HVAC system inspection

180 BTU/hr of cooling capacity

but will break the control circuit if sufficient oil pressure isn't established or sustained within the 2-minute release window

Laars Heating Systems R2004100 Pressure Switch 318973-401 Refined Diagnostics: Facilitates HVAC systemMaintain the industrial safety standards of your heating equipment with the Laars Heating Systems R2004100 Pressure Switch. This manual reset low gas pressure switch is a critical safety component designed for high output Laars commercial boilers and MagnaTherm water heaters. Engineered to detect hazardous drops in fuel pressure, the R2004100 interrupts the system's ignition cycle to prevent incomplete combustion and potential carbon monoxide buildup.