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NL8800487A
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Pipe connection for exhaust gas discharge - has swaged insert part entering standard size pipe
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NL8702987A
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Heater.
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NL8702792A
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Horizontal double-walled smoke exhaust.
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NL8701572A
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Control and safety unit for a heater.
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NL8403622A
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Control device for a central heating system containing a hot water supply.
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NL8403088A
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Hot-water supply geyser - has duct which passes cold water through finned block and spiral pipe around combustion chamber
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NL8401359A
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Hot water supply system - has heater in solar-heated circuit with has heater outlet connected to geyser and by=pass to geyser outlet
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NL8400533A
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Combined building heating and hot water supply - serves small dwellings and has boiler heat exchanger and geyser burner
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NL8400135A
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Gas-fired water heater - has flue running down from top of storage tank to level of burner
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NL8304323A
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Domestic hot water system - has tank in piping near distant tap maintaining water temp.
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