The White-Rodgers 5D51-78 universal replacement fan and limit control is perfect for applications with narrow space limitations. The 5D51-78 regulates fan or blower operation and acts as a high limit safety control. Fan: 50 DegreeF To 265 DegreeF range, adjustable differential. Limit: 100 DegreeF To 300 DegreeF range, 25 DegreeF fixed differential.
Summer fan switch for ventilation without changing control settings (has same fan and limit switch mechanism)
Element Length 11″
Slotted mounting holes for easy installation
Dial has individual pointers for fan cut-in and cut-out settings
Removable solid copper jumper between fan and limit switches
Customers say
Customers find the electronic switch works well, with one mentioning it’s perfect for an old conversion furnace. The product is easy to install, and customers consider it good value for money, with one noting it saved hundreds of dollars.
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