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NL1006456C2
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Heat exchanger and boiler equipped with such a heat exchanger.
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NL1001996C2
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Valve and a heating device provided with such a valve.
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NL9100767A
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Gas-fired installation
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NL9002626A
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Nox-low gas burner.
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NL9001450A
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Control of gas-fired boiler - control exercised by selectively shutting off gas supply to individual burner pipes
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NL8901760A
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Combustion gas injector with air injection - has parallel positioned gas flow injectors and injector for extra air positioned in front of mixture tube
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NL8901363A
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Gas-fired heater.
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NL8900030A
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Nox-poor atmospheric gas burner.
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NL8800649A
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Gas-fired heater and method for manufacturing that.
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NL8700605A
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Outlet arrangement through building wall - has eccentrically positioned tube located in central heating boiler exhaust gas outlet
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NL8304041A
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Boiler with vertical burner tube.
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NL8105827A
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Boiler.
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NL7907707A
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Central heating boiler economiser - has finned tubes followed downstream by smooth tubes inside downward portion of flue duct
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GB1556750A
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Atmospheric gas burner
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CH611999A5
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Cast-metal heat exchanger and method as well as casting mould for manufacturing the heat exchanger
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NL7513871A
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Central heating boiler made of cast iron - and cast as a monolithic piece to reduce the number of joints required (BE161176)
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GB784924A
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Improvements in and relating to air heaters
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