Hot water for domestic use : a complete guide to the methods of supplying and heating water for domestic purposes, giving each step to be taken and explaining why it is done . y-ing. Range Boiler Connections. In Fig. 3, the return bend represents the waterback in an ordinary kitchen range, the tank repre-sents the kitchen range boiler, and the pipes, theflow and return pipes from the boiler to the waterback in the range, and back again, to the boiler. In Range Boiler Connections 25 Fig. 4, however, is shown the method of connect-ing up a kitchen range boiler, both to the water-back and to theh
Hot water for domestic use : a complete guide to the methods of supplying and heating water for domestic purposes, giving each step to be taken and explaining why it is done . y-ing. Range Boiler Connections. In Fig. 3, the return bend represents the waterback in an ordinary kitchen range, the tank repre-sents the kitchen range boiler, and the pipes, theflow and return pipes from the boiler to the waterback in the range, and back again, to the boiler. In Range Boiler Connections 25 Fig. 4, however, is shown the method of connect-ing up a kitchen range boiler, both to the water-back and to thehot and coldwater supplylines. In practicethe pipe, whichconducts waterfrom the boiler tothe waterback, isknown as a -Howpipe, while thepipe which con-ducts the waterback again fromthe waterback tothe boiler isknown as a returnpipe. In an actualinstallation theboiler stand is on-ly about 18 incheshigh, so that thewaterback in therange is at higher elevation; consequently, theflow pipe to the waterback must be offset, asshown in the illustration. It is better to make thisoffset as indicated, by bending the pipe, than to useelbows. Bending the pipe decreases the number of. Fig. 4. 26 Hot Water for Domestic Use joints, consequently minimizing the possibility ofleaks; is quicker and cheaper to install, and offeringless resistance to the flow of water through thepipe. In the waterback the water is heated, flowsthrough the return pipe to the boiler and passesto the top, where it remains on account of its lessdensity than the rest of the water in the boiler. Thecoldest water is always at the bottom of a hot waterboiler, and the hottest water is at the top. Be-tween these two extremes the water is graduatedin temperature, the average temperature being foundnear the center line of the tank. Any emptying cock is placed on a branch to theflow pipe, so that the boiler can be emptied for clean-ing or repairs. Sometimes the boiler has an empty-ing pipe controlled by a valve or cock and emptyi
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