Burnham Boiler 104450-01 Aquastat Relay THPU32HP7Y this remote sensor dial is

this remote sensor dial is compatible with both steam heating and hot water applications

and Lennox commercial models

protecting the heat exchanger from dry-firing and catastrophic failure

Internal 10K Ohm Sensitivity: Optimized for municipal water and general-purpose conductivity sensing

Fail-Safe Spring Return: Automatically drives the valve to a normally closed position during power failures to protect against uncontrolled flow

Burnham Boiler 104450-01 Aquastat Relay THPU32HP7Y this remote sensor dial isThe Burnham Boiler 104450 01 Aquastat Relay serves as the primary immersion controller for hydronic heating systems, regulating high limit protection and circulator functionality. This critical component is engineered to maintain precise water temperatures and prevent boiler overheating by interrupting power to the burner if the high limit set point is exceeded. As an OEM replacement part for Burnham hydronic boilers, it ensures seamless integration