this unit operates within a precise range of 55 to 90 degrees F

Which air handler models are compatible with the HKR-05C

the 61-21368-16 is rated for up to 600 PSIG

Always verify shaft rotation (CCWLE/CWLE) before installation

McDonnell & Miller 310488 Switch Assembly THPU32HP7Y this unit operates within aThe McDonnell & Miller 310488 is a field replaceable SWA 42S Snap Switch Assembly engineered specifically for Series 42S low water cut off and pump controllers. This single pole, single throw (SPST) mechanism provides precise automatic reset functionality, ensuring consistent boiler feed pump control and high limit safety across residential, commercial, and industrial steam applications. Built with a robust housing and high quality internal contacts,