64 



The Weekly Florists^ Review^ 



August 13, 1008. 



No. 2 are for carnations and miscella- 

 neous plants that require 50 to 54 de- 

 grees; No. 3 for roses and srailax, re- 

 quiring 56 to 60 degrees in Ohio climate. 

 The boiler-shed is at the west end and 

 the water level of the boiler is below all 

 returns. 



My plan of piping is as follows: No. 

 1, 20x80, is to have a 3-inch flow over- 

 head from the boiler to the east end of 

 the house, branching in a coil of four 

 pipes on the north side, three pipes in 

 the middle and two on the south side. 

 No. 2, 20x80, is to have a similar 3-inch 

 flow, two pipes on the north side, three 

 in the middle and two on the south side. 

 No. 3, 20x70, will have the 3-inch flow 

 and three returns on the north side, four 

 in the middle and three on the south side. 

 All the returns are to be l^^-inch pipe. 



I wish to use hot water in mild weather 

 and steam when it is cold. Will the 

 piping be sufficient and will the 1%-inch 

 pipe serve the purpose ? C. F. K. 



The plan you propose is a good one 

 and is worthy of much more universal use 

 than it now has. The connected houses 

 can be handled by using a 21/^ -inch flow 

 under the ridge of each and placing four, 

 three, and two li/^-inch returns under 

 each of the benches in house No. 1. For 

 house No. 2 use the 2i/4-inch flow and 

 two, three, and three li/^-inch returns. 

 The largest number of returns in each 

 case should be under the most exposed 

 benches. House No. 3 had, I believe, 

 better be provided with four, three and 

 four pipes under the three benches. Ar- 

 range the expansion tank so as to give 

 good pressure and connect it with the 

 main return near the boiler. Provide 

 valves and pressure gauge, so as to allow 

 quick conversion to the steam system 

 when desired. L. C. C. 



VINDMILL EXPANSION TANK. 



I have a Wilks hot water heater 30x48. 

 Should the boiler and pipes be left full 

 during the summer, or should the water 

 be drawn out? 



I have a windmill about 180 feet from 

 my boiler, with a water tank thirty feet 

 high. If I connect with it, would it an- 

 swer for an expansion tank without any 

 other expansion? M. A. B. 



Yes, leave the boiler and pipes full of 

 water during the period they are not in 

 use. The whole plant should be flooded, 

 after having been thoroughly flushed out 

 at the close of the season. 



The winflmill tank will make an ad- 

 mirable expansion tank and should in- 

 crease the eflBciency of your hot water 

 plant considerably over a low expansion 

 tank. L. C. C. 



FROM STEAM TO HOT WATER. 



I have two Furman boilers with which 

 I am heating my place of about 10,000 

 feet of glass, by steam. Can I change 

 to hot water and would it be economical 

 to do so? My boilers are about five 

 feet from the top to the highest point 

 in the steam line. I am using 2-inch 

 flows and 1^4-i°ch returns. Could I 

 still use the l^-inch returns and 2-inch 

 flows, by increasing the number? 



W. S. K. 



The information that W. S. K. has 

 supplied, relative to the system itself, 

 is rather meager and we have no knowl- 

 edge as *to the exact methods of mak- 

 ing connections. We can see no reason, 

 however, should the steam pipes be run 



rOET WISE 



to the fact 



you will 



by installing The Martin Rooking Grate. Costs a little more than ordinary 

 grates, but the coal bums— it doesn't go into the ashpit. 



Send to us for the names of nearby growers who have used this grate a year 

 or more. They will tell you to order The Martin Rooking; Grate for the new 

 boilers to be put in this seasdn. Write for catalogue and prices. 



MARTIN GRATE CO., 



283 Dearborn St. 

 CHICAGO 



Send order now— we will make up the grates and hold unUl you say ship 



Mention The Review when you write. 



IMFROVKD STKXL RXTURN. TUBULAR BOILXR, FOR 8TKAM AND HOT WATBR 



JOHNSTON HEATING CO. 



138 East 31st Streat, NEW YORK 



Mention The Review when you w<*f 



THE KROESCHELL BOILER 



18 THX ONLT PKSFXCT 



Hot Water BoOer 



Vot Oast Iron 



Has thin waterways. Heats quickly. It is the 

 most eflficient, safest and moit economical 

 boiler built. Vary powertnl. 15 sizeg. 

 beating from the smallest greenhouse up to 

 60,000 square feet of glass to 60 degrees, at 

 15 degrees below zero. 



Pricei and catalogue on application. 



KROESCHELL BROS. CO., 51 Erie St., CHICAGO 



Mention The Review when you write. 



on a down-hill plan, why the same pip- 

 ing cannot be used for hot water, pro- 

 vided the returns leading from the sev- 

 eral coils are made the same size as the 



flow connections. In addition to this, 

 we would advise that a Honeywell heat 

 generator be installed on the system, 

 to insure rapid circulation of the water 



