| OCR Text |
Show the fireplace flue or the beater flu most be offset. When this Is absolutely unavoidable, the Holland Institute of Therraology'a engineer recommend, the offset should be lu the fireplace flue ratl.er than In that serving the central beater. beat-er. Also, the flues should be carried up separately to tba top. Offsets Id flues form catch-pockets for accumulation of soot and dirt, which decrease beating efficiency, Increase In-crease Dre-bazard and tend to make the borne dirty. To avoid these dangers, dan-gers, thorough cleaning of the whole beating plant by the suction cleaner method has become a regular part of the spring bouse cleaning program In I countless homes. RESTRICTED FLUE CHOKES OFF FIRE IN HEATING PLANT Few home-owners realize, points out the Holland Institute of Thertuolngy of Holland, Mich., that It takes the oxygen of from 10 to 20 pounds of air to burn up one pound of coal completely. com-pletely. This is why the size of chimney chim-ney flue Is so essenUul to perfect performance per-formance by the heating plant Height of the chimney controls the speed of the draft moving through the heater, but the area of the flue's opening open-ing governs the volume of air that the draft draws through the fuel-bed. fuel-bed. for small beaters, the area of the opening of the chimney-flue should be nt least 23 square inches. For stoves and ranges, the minimum area should be 40 square inches. Fifty square Inches Is the minimum for a fireplace flue, though a safer rule to follow Is that the chimney-opening should be one-twelfth the dimensions of the opening In the mantel. The minimum flue-area for a central beating plant, be It of any system Including the modern mod-ern warm air circulating type, la 70 Inches. This area should be continuous from the base of the chimney to Its very top. This means that the flue should be perfectly straight; turns or "offsets" should be avoided. Often, inn? I I m- IB tm-tua I I hVhus rmKi I I MWM fui Rjdl tun f hi A Nw 1 I auHOvr 9 AS SUM ffgMSOUM .J N B -. m ml (Laft) Furnace Flue Offset for Fire place. (Right) Correct Double Flue. when there Is a fireplace In the llv-Ing-room and a central heating plant In the basement the flues from both are united In one chimney for economy's econ-omy's sake. This menus that either |
