HOUSE HEATING 



411 



irregular in order to expose more surface to the fire. Water 

 is conducted through a large pipe, B, from which smaller 

 pipes connect with one end of the radiator in each room. 

 The other end of the radiator is connected to a large return 



Oc 



I 



)<<- 



rmri 1 . 



\H 



!i n r 



->! 



Lfl 



^ZN 



/« 



r~r 



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After University of Minnesota 



Fig. 316. Hot-water system 



