146 



The Florists^ Review 



Januaby 12. 1922 



If this is not done, the circulation will 

 be checked jor prevented entirely. 

 While the expansion tank may be at- 

 tached to just one of the flows, it will 

 be necessary, nevertheless, to provide 

 air valves for the other flow pipes. 



HEATING A LEAN-TO. 



I have one house, 22x^49 feet, and to 

 this house have added a lean-to, 9Vjx40 

 feet, which is heated from the main 

 heating system. I have only one 3-inch 

 flow below the ridge and eighteen 2-inch 

 returns under the benches, with a good 

 circulation. I think there is too much 

 bottom heat and not enough above. The 

 walls of the greenhouse are seven feet 

 high; three feet of the walls consists 

 of cement, board and paper, but the 

 cement is cracked. I had my chimney 

 enlarged, but it seems to have done no 

 good. Would it bo better to have one 

 flow on each plate? My boiler burns 

 Pocahontas coal, but when the tempera- 

 ture goes down to 20 degrees below zero 

 it can hardly hold the temperature in 

 the house at 50 degrees. (J. J. — la. 



Without a definite statement regard- 

 ing the amount of glass in the side 

 walls, it is impossible to give anything 

 but an approximation regarding the 

 amount of radiation required in the 

 house described. 



Except for the lean-to, the boilat-and 

 radiation should be able to hgnt the 

 house. 



While the one 3-inch flow p\pe will 

 give good results, it would be advisable 

 to run one 2J/^-inch main on each wall 

 plate, and the 3-incli pipe three feet 

 below the ridge. If there is no glass 

 in the side walla, it should be possible 

 to carry a temperature of 60 degrees 

 by using three 2i/^-inch flow pipes and 

 twelve 2-incli returns. To heat the lean- 

 to, it would be advisable to run a 2V2- 

 inch flow pipe along the side wall near 

 the ridge, and with it supply a coil of 

 four 2-inch returns under the outside 

 bench. 



Portsmoutli, O. — O. B. Oakes has se- 

 cured a long-time lease on room in the 

 Playhouse building and will go into the 

 florists' business in the near future. 







^ 



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188S Clybonrn Avcnoe CHICAGO, ILL 



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