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

and Lennox commercial models

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

This TXV valve body features 1/4" SAE flare inlet and 1/2" SAE flare outlet connections

protecting the heat exchanger from dry-firing and catastrophic failure

supporting fluid temperatures up to 210°F while maintaining a leak-tight seal

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