FIELD: engines and pumps.
SUBSTANCE: invention relates to hot water control by circulation pump including the following steps: determination if hot water is used; determination if circulation pump operating conditions are selected and circulation of hot water by circulation pump from outlet pipe to inlet pipe, said pump arranged at bypass pipe communicating inlet pipe whereto straight-flow water is forced and outlet pipe wherefrom heated water is forced when user uses hot water and selected definite operating conditions of circulation pump.
EFFECT: decreased hot water temperature difference at water heater outlet.
7 cl, 7 dwg
