136 



The Rorists^ Review 



January 5. 1922 



be advisable to use a boiler rated at 

 about 5,000 square feet of radiation, 

 which, in most makes of greenhouse 

 boilers, will have a grate measudng 

 36x54 inches. With hard coal, or some 

 of the better grades of semi-bituminous 

 coal, good results will be secured with 

 a boiler having a grate 36x48 inches. 



REABRAlfGINa SYSTEM. 



I have a steam heated greenhouse, 

 25x50 feet, and wish to change the heat- 

 ing system so that hot water can be 

 used. The side walls of the house are 

 seven feet high — four feet of glass and 

 three feet of concrete. One end of the 

 house is adjacent to the boiler room and 

 the other is glass, with a 3-foot wooden 

 wall. It is expected that the house will 

 be extended another twenty-five feet in 

 the near future. 



The size of the grate in the boiler is 

 30x31 inches and the boiler itself is 

 rated at 1,475 square feet of direct radia- 

 tion. It is in a pit seven feet deep. 



The house is piped as shown in the 

 blue print which accompanies this let- 

 ter. The 114-inch return coils are con- 

 nected to the boiler by 2-inch pipe. 

 Would the single 3%-inch flow pipe, as 

 installed for steam, be sufficient for the 

 hot wjitcr flow or will it be necessary to 

 put in two new 2% -inch flows, one along 

 each eave? 



Can the circulation be maintained by 

 gravity or will it be necessary to set up 

 an artificial apparatus for this purpose? 



T. H. B.— Can. 



It would not only be advisable to use 

 two additional 2% -inch flow pipes, but 

 also to add either twelve 1^-inch or 

 eight 2-inch returns, placing them under 

 the middle benches. 



The capacity of the main returns 

 should be the same as that of the flows. 

 Nothing less than three 2%-inch returns 

 will be advisable for best results, 

 although they may be somewhat reduced 

 near the hoiler. 



While 1%-inch return pipes will give 

 fairly good results in houses up to fifty 

 feet in length, for a house seventy-five 

 feet in length use either 2-inch returns 

 or put in a circulator. These will be fur- 

 nished by any of the dealers in green- 

 house boilers who advertise in the Ee- 

 view. 



Mention The Review when you write 



ESTABUSHED 1857 



S. WILKS MFG. COMPANY 



Manufacturers of 



WILKS HOT WATER BOILERS 



FOR GREENHOUSE HEATING 

 3517-3539 Shields Ave., CHICAGO, ILL 



WHY TAKE CHANCES? 



Why do you take chances of losing hun- 

 dreds, maybe thousands of dollars in crops? 

 That is just what you are doing if 

 you have no Standard Thermostat. 

 A freeze-out may completely ruin 

 your plants over night, or reduce 

 th eir value by hundred s of d ollars . 



The Standard Thermostat will ring a 

 bell whenever your greenhouse tem- 

 perature rises nr falls to the danger 

 point. Place the bell at your bedside 

 or anywhere you please. 



A letter from Lee Smith.i Gasport, 

 N. Y.: 



"Standard Thermometer Co., 



"Gentlemen:— Find enclosed a check 

 for $15.00 S nd one G. H. 4 Standard 

 Thermostat with lock and key. If it 

 conies by expiess it will be 0. K. 



"I have used a standard Thermostat 

 without lock and key for five years and 

 cannot get along without one." 



This is a word to the wise— a buy word 

 to the wise grower. Sudden temperatuie 



urs and downs ruin thousands of plants every year. Protect yours! Install a Standard 



Thermo tat now. It costs only $18.00. Write today. 



(G. H. 3, same as G. H. 4, only not in locked case. $10.0O.) 



STANDARD THERNONETER CO., 65 Shirley Street, BOSTON, MASS. 



Mention Tlie Review when you write. 



Maiehead 



Points the 

 Way to 

 Economy of Fuel 



0EGIN NOW to find out about the "Morehead" System. Send right away 

 for the "Morehead" book for tlorists. In it you will find an easily understood 

 discussion of the boiler and condensation question from the practical 

 standpoint of the grower of flowers. Write for this help TODAY. 



MOREHEAD MFG. CO. 



Dept. "M" 299 



DETROIT, MICH. 



Mention The RcTlew when yon write. 



It Lets the Florist Sleep 



Let UB tell you what one 

 will cost delivered at 

 your Kiillroad Station. 



You don't have to sit up and watch a 



GIBLIN GREENHOUSE BOILER 



WRITE NOW 



GIBLIN & CO. 



UTICA, N.Y. 



Mention The Review when you write. 



Pipe Fittings - Imico Boilers 



• FOR GREENHOUSE WORK ■ 



ILLINOIS MALLEABLE IRON CO. 



1801-1825 DIVERSEY BOULEVARD 



CHICAGO 



Mention The Review when von write. 



