I-Thermostat iguqula ngokuzenzakalelayo inani lamanzi angena kwi-radiator ngokuya ngamazinga okushisa apholile futhi ashintshe ububanzi bamanzi ukuze balungise amandla okushisa okushisa futhi baqinisekise ukuthi injini isebenza ngaphakathi kobubanzi bokushisa obufanele. I-thermostat kumele igcinwe isesimweni esihle sezobuchwepheshe, ngaphandle kwalokho kuzothinta kakhulu ukusebenza okujwayelekile kwenjini. Uma i-thermostat main valve ivulwa sekwephuze kakhulu, izodala ukunqwala kwenjini; Uma i-valve eyinhloko ivulwa ekuseni kakhulu, isikhathi sokushanela kwenjini sizoqhubeka isikhathi eside futhi izinga lokushisa le-Injini lizophansi kakhulu.
Sekukonke, inhloso ye-thermostat ukugcina injini ekubanda kakhulu. Isibonelo, ngemuva kokuthi injini isebenza kahle, injini ingabanda kakhulu ngejubane lasebusika ngaphandle kwe-thermostat. Ngalesi sikhathi, injini idinga ukumisa okwesikhashana ukujikeleza kwamanzi ukuze kuqinisekiswe ukuthi izinga lokushisa le-Injini aliphansi kakhulu
