allowing the ignition sequence to proceed

When performing a Lennox furnace exhaust repair

Contractors should verify the gas valve model and furnace serial number before installation to ensure the ANGKT555-1 orifice kit aligns with the BTU requirements of the specific burner tray

Using OEM York HVAC parts ensures that the electrical specifications match the system's control circuit requirements precisely

Simplified Installation: Standard 1" NPT ports and a 1/2" conduit connection allow for direct integration into existing rigid or flexible piping

McDonnell & Miller FS7-4E Switch THPU32HP7Y allowing the ignition sequence toThe McDonnell & Miller FS7 4E (Part Number 120100) is a heavy duty industrial liquid flow switch designed specifically for hazardous environments. Featuring a NEMA 7 and 9 explosion proof enclosure, this unit is rated for Class I, Groups C and D, and Class II, Groups E, F, and G, ensuring safe operation in volatile atmospheres. The 1 1 4" NPT brass body utilizes a sealed tube construction and a magnetic switching mechanism to provide reliable SPDT