146 



The Florists' Review 



Mabch 13, 1913. 



piRbbox boilbr 



Johnston Heating Co. 



131 B. 26tk St.. N«w York City 



Mention The Review when yoa write. 



with the boiler house at the northwest 

 corner. The ridges run north and south. 

 Please give me your opinion as to the 

 best plan for heating this house. 



W. S. 



From the description it would appear 

 that the range consists of five houses, 

 each 15x120 feet. The description also 

 would indicate' that the main is too 

 small, but the data are not definite 

 enough to determine whether the radia- 

 tion in the returns is sufficient. 



If hot water is to be used, it will 

 be well to run three 2%-inch flow pipes 

 in each of the houses to the end far- 

 thest from the boiler and connect each 

 of them with two 2-inch returns. Place 

 one flow on each plate and the other 

 under the ridge. In case low pressure 

 steam is installed, run a 2V^-inch flow 

 under each ridge and connect them 

 with six or eight 1%-inch returns. Of 

 course, all of the pipes should have a 

 slight fall. Place a shut-off valve on 

 each flow and return pipe where it en- 

 ters the house. 



AN L-SHAPED STRUCTURE. 



I am enclosing a diagram of my two 

 greenhouses, so that you may inform 

 me as to the best arrangement »f the 

 piping. You will note that one of the 

 houses is already in use and contains 

 400 feet of 2-inch pipe. This piping, 

 however, does not furnish sufficient 

 heat. How much more piping will be 

 needed to heat the house to 60 degrees 

 in this part of New York state, where 

 the outside temperature sometimes falls 

 as low as 20 degrees below zero! The 

 flow and return pipes for the new house 

 will pass through the older one; will 

 that raise the temperature sufficiently? 

 What piping will be required for a tem- 

 perature of 60 degrees in the new 

 house? I can not flnd a plumber in 

 this vicinity who has ever piped a 

 greenhouse. What do you think of 

 generators? Do they pay for them- 

 selves in the saving of coal? S. H. 



-The sketch submitted shows that the 

 older house is 16x50 and the new house 

 15x60. The new house is built across 

 the end of the older one, so that the 

 two houses form an L-shaped structure, 

 with the older house as the upper part 

 of the L and with the boiler shed at 



Deeds Speak Louder Than Words 



This principle has lifted the Kroeschell Boiler from a modest 

 position into a world's r«cord with millions of feet of glass. 

 The reason is — Well, ask any one of our customers. 



U. 8. Propaffatins Gardens (Ck>n8erTatorie8 of the President of the 



United States). Wasbinffton, D. C. Heated 



by Kroeschell Boilers. 



PC'rO^ green house 



^•^ BOILER 



so, 





Has th« Hlshaat Standard off Haatlns Valuaa 



Immense Self-Oleanlnir Heating Surface— LonKest Fire Travel— per- 

 fect Combustion— Free Clrculallon — Thin Waterwars — Guaranteed 

 Worklnsr <'anacltte8—Safpty—Durablllty— Efficiency and Economy. 



You get Up-to-dat« piping systems and High Grade boilers when you 

 deal with Kroeschell. 



We pay no commissions to agents or dealers— our boiler is sold direct from 

 factory to user, which eliminates an unnecessary middleman's profit, and 



you, Mr. Florist, get the benefit. 



SEND FOR OUR CATALOGUE-DO IT TODAY. 



KROESCHELL BROS. CO., 



444 West Erie Street, 

 CHICAGO, ILL. 



