158591 ⎘
Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters; Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water mantle surrounding the combustion chamber or chambers
Sub-classes:COMBUSTION APPARATUS AND HOT WATER APPARATUS
#2Combined heat and power plant and a method for improving the burning process in a combined heat and power plant
#3Heat exchanger
#4Heat exchanger and combustion device
#5Boiler system
#6Blower assembly with compensation for vent back pressure
#7Solid fuel boiler
#8Non-to-minimally fractionalized biomass-fueled renewable energy
#9Low maintenance fluid heater and method of firing same
#10Boiler
#11Low maintenance fluid heater and method of firing same