. 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. ri£ Connection to Allow Use of OneOnly if Desired. stove the lower onealone every dropof hot water can be displaced before cold is drawn. Objectionto this method of supply is sometimes made on the score thatthe cold water shoots clear to the top of the boiler and cools itoff, but this is only the case under heavy pressures and oughtonly to be considered when such obtain. Even then the eff
. 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. ri£ Connection to Allow Use of OneOnly if Desired. stove the lower onealone every dropof hot water can be displaced before cold is drawn. Objectionto this method of supply is sometimes made on the score thatthe cold water shoots clear to the top of the boiler and cools itoff, but this is only the case under heavy pressures and oughtonly to be considered when such obtain. Even then the effectof the flow may be over-estimated. t)« HOT WATER SUPPLY. Joint Hot Water Supply for Two Flats. The two methods of connecting boilers on different floorswith ranges on the same floor as the boilers, but which admitof heating the entire system with either as may be convenient,are shown in Figs. 53 and 54. J^. ?//////// ////////////f//////////////M //////////!l/^f//// f// //^^ ^ /A Fig. 53. Joint Hot Water Supply for Two Flats. In Fig. 53 is shown a 30-gal. boiler, connected up so thatall the hot water from the lower boiler will pass through itbefore it is drawn at the fixtures. This has certain advantagesand also disadvantages. If the upper range is being run alone,hot water will be readily drawn at any fixture without cooling MULTIPLE CONNECTIONS. 69 by mixing with the cold water from the lower boiler. If bothboilers are being run, all the hot water in both can be drawn ifdesired, and the circulation is free and continuous through thewhole system. No valves are necessary on the hot supply valve on the cold supply to upper boiler may be kept open
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