The L41../L61.. series aquastats are primarily designed for application on water filled heating systems and systems for hot water supply, mainly domestic use.
Honeywell manufactures a coprehensive range of water temperature thermostats (trade name Aquastat) for c ontrolling and limiting boiler water temperature in hydronic heating systems. These sensitive, fast response devic es are available in either direc t, panel or surfac e mount versions.