Resideo L4006B1007 Aquastat Controller 320819-301 including the WB20454 through WB24274

including the WB20454 through WB24274 series technical sub-variants

preventing board failure due to fluctuating line voltage

or if the furnace pilot won't stay lit even after cleaning

This OEM interface board is designed to manage the ignition sequence and blower timing

and Pennco brands

Resideo L4006B1007 Aquastat Controller 320819-301 including the WB20454 through WB24274The Resideo L4006B1007 Aquastat Controller is a professional grade immersion temperature controller designed specifically for circulator application in hydronic heating systems. This immersion device features a 3 8" x 2 7 8" copper bulb sensing element that provides precise thermal response for regulating or limiting the temperature of liquids in boilers and storage tanks. Configured with SPST contacts that make on temperature rise, the L4006B1007