The Williams P254000 Thermocouple is a high-performance flame sensing replacement designed specifically for Williams gas-fired furnaces and wall heaters

The factory-recommended torque is 20 +/- 3 in-lbs

the plate may be compromised or mismatched for the unit's firing rate

Which actuators are compatible with the UGLK1010

Viessmann 7427419 321042-401 The Williams P254000 Thermocouple isThe Viessmann 7427419 is a direct OEM Control Console WB1B 26 engineered specifically for the Vitodens 100 W series condensing boilers. As a critical interface for the WB1B 26 boiler control system, this unit facilitates precise modulation and operational oversight, ensuring the hydronic system maintains peak thermal efficiency. The console features a technical digital display for boiler diagnostics and manual rotary selectors for adjusting heating