80 



The Rorists^ Review 



Jolt 20, 1916. 



bgiJers in question, but it would seem 

 that the claims made for them have 

 some foundation and that the boilers 

 are adapted for the heating of small 

 greenhouses. 



The diagram shows the present green- 

 house to be 20x35. Beyond it — that is, 

 at the side of the range farthest from 

 the boiler — is shown the proposed house, 

 which will require a temperature of 60 

 degrees at one end and 55 degrees at 

 the other. The proposed house will be 

 parallel with the present one, but de- 

 tached from it.' 



If the heat furnished to the present 

 house is satisfactory, we would not ad- 

 vise any change, but we would put in 

 a valve by means of which the heat 

 furnished to the garage and stable can 

 be regulated. 



For the new house we would use 4- 

 inch main flow and return pipes, and 

 from the main flow we would take oflf 

 three 2% -inch pipes as flows inside the 

 house. If there is no glass in the side 

 walls, we would suggest the use of nine 

 2-inch returns, placing three on each 

 of the side walls and the others under 

 the middle benches. One of the flows 

 should be upon each plate and the other 

 about two feet below the ridge. The 

 difference in the exposure of the two 

 ends of the house will probably make 

 the 35-foot section about 5 degrees 

 cooler than the other room. 



While we have no one in mind who is 

 looking for a secondhand boiler, a cus- 

 tomer can undoubtedly be secured by 

 using the advertising columns of The 

 Eeview, at a cost of 10 cents a line. 



WATER DOES NOT CIRCULATE. 



Enclosed you will find a sketch which 

 shows my boiler and the way in which 

 it is connected with the piping in the 

 greenhouse. It is a Wilks boiler. I 

 tested the outfit today, but found that 

 the pipes barely get warm and the 

 water boils out of the 1-inch pipe on 

 top of the expansion tank. Can you 

 state the cause of the trouble and sug- 

 gest a remedy? I cannot use the heat- 

 ing system in its present condition and 

 I am anxious to get it in shape as soon 

 as possible. L. A. W. — Miss. 



The sketch shows two 1% inch flow 

 pipes running overhead, about forty 

 inches above the top of the boiler. Each 

 of these flows, presumably, feeds a re- 

 turn coil of five 1^-inch pipes, which 

 appear to be but little, if any, above 

 the bottom of the boiler. The expan- 

 sion tank is located seventy-eight inches 

 above the top of the boiler and is cou; 

 nected with one of the main returns, 

 as well as with the highest point in 

 each of the flow pipes. 



The only way in which it is possible 

 to make water circulate in a system 

 where the returns are on about the 

 same level as the bottom of the boiler 

 is to carry it under pressure. If the 

 system is connected with a city water 

 service, a safety valve may be placed 

 upon the vertical pipe running up from 

 the top of the expansion tank, and may 

 be set at a pressure slightly higher 

 than will be carried in the water sys- 

 tem. A pressure gauge should also be 

 attached at some convenient point in 

 the system. There, should be a shut-off 

 valve in the pipe connecting with the 

 city main, but this should be kept open. 

 Care should be taken to allow any air 

 which may collect in the system to 

 escape through the safety valve. An- 

 other way would be to install a mer- 

 cury generator to place the water in 



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I MfiM^ad I 



= Better Flowers More = 



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Kstablislied 1827 



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