Burnham Boiler 104450-01 Aquastat Relay THPU32HP7Y and Lennox commercial models

and Lennox commercial models

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

If the circuit is open or the lead wires show signs of thermal degradation

industrial-grade electrical control component designed specifically for three-phase commercial heating applications

protecting the heat exchanger from dry-firing and catastrophic failure

Burnham Boiler 104450-01 Aquastat Relay THPU32HP7Y and Lennox commercial modelsThe 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