I-thermostat ilungelelanisa ngokuzenzekelayo inani lamanzi angena kwiqondo lokushisa amanzi lokupholisa kunye nokutshintsha uluhlu lokujikeleza kwamanzi kunye nokuqinisekisa ukuba i-injini isebenza ngaphakathi kuluhlu lobushushu. I-thermostat kufuneka igcinwe kwimeko entle yezobuchwephesha, kungenjalo iya kuchaphazela kakhulu ukusebenza kwesiqhelo kwenjini. Ukuba i-thermostat enkulu ivuliwe kakhulu, iya kubangela i-injini yokugcwala; Ukuba ivalve ephambili ivuliwe kwangoko, ixesha lokuhamba i-injini liza kufika ixesha elide kwaye ubushushu beinjini buya kuba phantsi kakhulu.
Konke konke, injongo ye-thermostatat kukugcina i-injini evela kubanda kakhulu. Umzekelo, emva kokuba i-injini isebenza ngokufanelekileyo, injini inokubanda kakhulu kwisantya sasebusika ngaphandle kwe-thermostat. Okwangoku, i-injini kufuneka iyeke okwethutyana ukusasazwa kwamanzi ukuqinisekisa ukuba i-injini yobushushu beinjini aziphantsi kakhulu
