. Hot water supply and kitchen boiler connections : a text book on the installation of hot water service in residences and other buildings and methods of connecting range boilers, steam and gas water heaters. temperaturethan the rest. The drawoff cock in this case isfitted to the coil andbrought to a point out-side of the brickwork. Care should betaken to lay the coil sothat there will be no op-portunity for air to col-lect and so that it pitchesupward continuously tothe boiler connection anddown from the returnconnection to the drawoff cock. Brass pipe is best suited for such a coil and it ma
. Hot water supply and kitchen boiler connections : a text book on the installation of hot water service in residences and other buildings and methods of connecting range boilers, steam and gas water heaters. temperaturethan the rest. The drawoff cock in this case isfitted to the coil andbrought to a point out-side of the brickwork. Care should betaken to lay the coil sothat there will be no op-portunity for air to col-lect and so that it pitchesupward continuously tothe boiler connection anddown from the returnconnection to the drawoff cock. Brass pipe is best suited for such a coil and it may bemade either with iron headers or return bends to avoid spread-ing the fittings in making the joints. Where it is desired tosupply one large boilerwith hot water fromcoils in several ovens itmay be well to connectthem into a header andfrom there make theconnection to the returns in such acase would also be con-nected through a headerto the lower tapping ofthe boiler. Care mustbe taken in doing so tomake the connections sothat the flow from each . Fig. 125. A Bakery Boiler Heated by Coil in coil would be equalized. Oven Fig. 124. Method of Heating Boiler by Plac-ing it in Sand Over CHAPTER XIII. Air-Locking in Hot Water Supply Systems—Expansionof Water, Relief Pipes and Valves. Much of the unsatisfactory service of hot water supplysystems is undoubtedly due to partial air-locking in the pipescausing stoppage, or at least retarding of the circulation. Thisis especially evident in those systems supplied at low pressurefrom an overhead tank as then the conditions are more favorableto the holding back of water by a pocket of air formed by a slightdepression in the line or by improper connections. When thetank is at some considerable elevation or the supply is takendirectly from the city supply mains the trouble is not so ap-parent as then there is sufficient pressure behind it to overcomethe resistance of the air in any trapped portion. Where leadis the materi
Size: 1559px × 1602px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, bookidhotwatersupp, bookyear1913
