While it fits a 1/2 inch bore

you maintain the original system efficiency and quiet operation expected from 36

Is the T775-SENS-WR compatible with older Series 1000 controllers

Ensure the mixed air sensor and enthalpy sensor (if applicable) are providing correct resistance values

though you should verify the specific requirements of your unit's internal wiring

Resideo L4008E1305 Temperature Control 326058-755 While it fits a 1/2The Resideo L4008E1305 is a high limit remote bulb immersion controller designed for hydronic heating systems requiring critical over temperature protection. This SPST aquastat features a manual reset mechanism, ensuring the system remains offline for inspection if the high limit threshold is breached. With an operating temperature range of 100 240F and a fixed high limit stop at 240F, this unit provides precise thermal management for boilers and