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Show HIGH CHIMNEY AID TO HEATING, CURE FOR POOR DRAFTS If tbe Are In your beater tends to fall permanently asleep unless you are continually prodding It, or tf when you open the beater door to add fuel It puffs a cloud of smoke In youi face, dont be too sure that your heating plant Is at fault, warns the Uollnnd Institute of Tbermology, of Holland, Michigan. Tho trouble niny be In the chimney. Chimneys are .not only smoke and gas-vents. They have another equnl ly Important duty, to supply oxygen to the Are. To supply enough oxygen for complete combustion, the chimney n mi n Downdraft Chlmnsy Too Low. must be both big enough to dlmen J slon and tall enough. K Even Id a one-story home, tbe Rue i should not be less than 26 feet high. measured from the level of the heat- i Ing plant grate to the top of the chlm ney. Thirty feet la a safer minimum I The chimney of a two-story bouse should be at least 80 feet high. J A flue should extend at least six ! feet above a flat roof and two feet Si above the ridge of a hipped or gable root If these rules are not observed, according ac-cording to the Holland Institute of Thermology, downdraft will occur Downdraft smothers the flra It creates cre-ates a back-pressure In tbe firebox which causes clouds of smoke and ; gaa to blow Into the basement when the firing door Is opened. It may even i cause an explosion. So a chimney i that Is too low Is a defect In the1 i heating system which not even the j ?W I B-ftj j k3 i Chimney With Good Draft I most modern vapor-alre, warm air clr- i culatlng plant can overcome. j Poor draft can be tested accurately i with scientific Instruments. Any re- j liable beating company should be able i and wllilng to do this. If yon know none that will give yon this service, i write tbe. Holland Institute of Therm- J ology, which will give you names of i concerns tn your city that will render j this scientific tasting service without i charge, . J |
