7^. ■.>■- 



The Weekly Florists^ Review^ 



JUNB 16, 1011. 



Temperatures easily maintained; fires only once at night 



We have at present 15.000 sq. ft. of glass and think this boiler will take care of 25,000 sq. 

 ft. of glass at 52° in greenhouses. We have no trouble in maintaining proper temperatures 

 and fire but onoe at nisrbt. We put in the piping system according to your plan in three 

 new houses. The two old bouses we left the way they were, which caused us some trouble. 

 We win change pipes this summer according to your plan and will then have no trouble. 

 Tour plplns plan is fine, and the Generator ^rorks \ireU; in fact, we could not have 

 done without it, on account of the piping in the old houses. 



Wenbel & Hecht, Anglum, Mo. 



kl^^. KROESCHELL BROS. CO., 444 W. Erie St., CHICAGO, ILL. 



Mention The Review when you write. 



heat the four houses described, the 

 boiler should have a rating of about 

 3,000 square feet of radiating surface. 



TWO DEFECTS IN PIPINQ. 



Will you kindly tell me what is the 

 trouble with my heating system! 

 Every time the pipes get warm the 

 water overflows at the expansion tank. 

 I have been troubled in this way ever 

 since I put the system in last winter. 

 Now, when there is no fire in the boiler, 

 the sun heat causes the expansion tank 

 to overflow — that is, when the pipes 

 get warm with sun heat. 



The greenhouse is 40 x 80 feet. The 

 side walls are four feet high; the lower 

 half is double boarded %nd the upper 

 half is glass. The house runs from 

 northeast to southwest. The northeast 

 gable is boarded; the southwest gable 

 is glass. The boiler is a round Ma- 

 honey and is guaranteed to heat the 

 house. Two 4-inch flows run from the 

 boiler to the glass gable and there con- 

 nect with a 2-inch reducing elbow 

 which feeds four 2-inch returns. These, 

 in turn, drop by means of a 2-inch 

 branch tee into a 2-inch return to the 

 boiler. Do you think I put in enough 

 2inch pipes! One coil of pipes never 

 got warm, while all the others were 

 boiling. I am located in Rhode Island. 



J. J. K. 



As water expands when heated, it is 

 not strange that the expansion tank 

 overflows, even from the heat of the 

 sun. If the coils are alike, there is 

 no reason why the water should not 

 circulate evenly in both if it does in 

 one. It is possible that the grade in 

 one of the coils is such that the air 

 has pocketed and this would prevent 

 the circulation of the water. 



There are, however, two serious de- 

 fects in the heating system. One is a 

 deficiency in the amount of the radia- 

 tion, and the other is that the 2-inch 

 connections to the coils are altogether 

 too small. For a temperature of 50 to 

 55 degrees, a house 40x80 feet should 

 have eighteen 2-inch returns, in addi- 

 tion to the two 4-inch flow pipes. A 

 better way would be to have four 2V2- 

 inch flow pipes and arrange the re- 

 turns in four coils of four 2-inch pipes 

 each. If preferred, the four flows can 

 be connected to the boiler by means of 

 two 4-inch pipes, but, whatever the size 

 of the flows, the returns should be of 

 the same capacity. Two 3-inch pipes 

 could be used for both. 



Thk Ekvuw sends Scott 'b Flori»ts' 

 Manual postpaid for $5. 



The New 



^^ Detroit '' Return Trap 



The only successful modifications in Tilting Traps made 

 in years have been embodied in the "Detroit." Improve- 

 ments in the design and construction of "Detroit" Traps 



have been made 

 possible by an- 

 other recently al- 

 lowed patent con- 

 trolled by this 

 company. 



In writing for 

 prices, advise 

 number of square 

 feet of glass in your 

 houses, together 

 with horse- power 

 of boiler and steam 

 pressure carried. 



American Blower Gompany 



DETROIT. MICH. 

 U. S. A. 



Mention The Review when yoa write. 



"SUPERIOR" 



To all others for Greenhouse Heating. 



Blade In Nine (9) sizes tor Hot Water. 

 Bend for cataloBue.and Ust ot growers that are using: tills boiler. 



Superior Machine ft Boiler Works 



840-860 West Superior Street, CHICACK), ILL. 



MenUon The Review when yoa write. 



