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}*«rTEMBEK 30, 1909. 



The Weekly Florists' Review^ 



73 



LET OS EEPEAT TI 



Yoa know that the longer the fire travela, constantly 

 coming ia contact with the water ways, the more (he 

 heat is harnessed, and the less goes np the chimney. 

 So far so good— but of still greater importance is the 

 extracting or absorbing of the greatest amount of h«^at 

 Directly In the combustion chamber when the 

 burning gases are hottest. This is what is accomp- 

 liahed by The Earnham cross fire channels with their 



El fact: 



side fine openings, which channels are surrounded on 

 three sides by extra deep water ways. 

 The heat that these deep water ways fail to absorb is 

 then pra'^ticaily all taken up by the fire travel in its 

 journey three times the boiler's length. 

 So these are the reasons why, for greenhouse econ- 

 omy, you can't beat The Burnham hot water or steam. 

 Barn hard or soft coal. Send for Boiler Catalogue. 



urn k BUEMAM COoo imagtoi, e y. 



New York 

 Boston 



Philadelphia 

 Chicago 



Mention The Review when you write. 



ret 11! 

 hav, 



poi:,. 



chp ' 

 •ks 

 car. 

 it . 



the, 

 thi- 

 ra;). 

 coi • 

 flo> 

 Tb, 

 me 

 bu- 

 yer, 



'" at the boiler, or if you already 



a check valve connected at this 



. the trouble may be due to the 



valve not seating properly. If 



■d, a small horizontal check valve 



e connected to each coil just where 



era the main return pipe. You say 



is ten feet rise on the mains from 



oiler to the highest point of the 



• It will be a great advantage to 



•t a %-inch bleeder to the main 



near the boiler to drain this pipe. 



bleeder can be connected to the 



return near the boiler. With the 



<^r and check valves as recommended 



system should work perfectly. 



COIL BOILERS. 



* • I' you tell us the best way of con- 



wiKting a coil boiler as to bricking in, 



^';- Would 3-inch pipe be better than 



"iiiih? How much pipe would it take 



ror -,000 feet of radiation? H. F. C. 



•Either 2-inch or 3-inch pipe can be 



Pipe Fittings — imico Boilers 



-FOR GRKKNHOUSE WORK- 



ILLINOIS MALLEABLE IRON CO. 



1801-1825 DIVERSET BOUI.SVARD CHICAGO 



used to make a coil boiler. The 2-inch 

 pipe would be preferable, as you could 

 cut it yourself, whereas the 3-inch pipe 

 must be cut at some pipe shop where the 

 necessary tools could be had. Never 

 build a coil boiler of regular steam pipe. 

 Always use extra heavy or double extra 

 heavy pipe, and one important thing is, 

 be sure to screw the threads well into the 

 fittings. 



For 2,000 square feet of heating sur-, 

 face you will require a coil boiler having 

 at least 240 feet of 2-inch pipe. Seven 

 square feet of grate surface is necessary 

 for the above. 



Many years ago the writer built a coil 

 boiler of 2-inch extra heavy pipe with re- 

 turn bend fittings. There were six rows 

 of 2-inch pipe about six feet long in each 

 section, and eight sections were required 

 to do the work. The first season one of 

 the cast iron fittings cracked during a 

 cold spell and I nearly froze out. I sim- 

 ply mention this because coil boilers are 

 not to be depended on, and for a little 

 more money invested at the start you can 

 get something far more substantial and 

 much more economical. 



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