The Golden State: Where & How to Live, Secure, Visit, Enjoy and Thrive in California
Hot Water Suply
For example, straight valves are shown on all the fixtures, whereas, except for the tubs, angle valves and wall fixtures may be used.
52. Storage-Tank System.—In Fig. 22 is shown in front elevation and end elevation a horizontal hot-water storage tank a connected up in a neat and symmetrical manner. The tank is suspended by two wrought-iron cradles b supported on iron-pipe frames put together with common stock fittings, as shown. The flanges at the base of the frame are set on the floor and the top of the rear frame is calked to the wall, as shown at c. Cold water can be supplied to the tank either from the street mains through the pipe d, or from a house tank through the pipe e, according to the requirements of the building and the condition of the street pressure, a check-valve f being placed on the rising main d. The water is heated during winter by a steam coil, shown by dotted lines inside the tank. During summer, when steam is not available in the building, the water is heated by a coal fire in the heater g. A distributing manifold h is located over the tank; the hot-water flow pipes I leading to the fixtures take their supply from this manifold, and each is separately valved and dripped above the manifold, as shown. The return, or circulation, pipes j are connected in the same manner to the return header k. A relief valve l prevents the accumulation of an excessive pressure due to the expansion of the water, of which there is a possibility, because a check- valve / is used on the supply pipe. This check-valve is necessary to prevent a discharge of the water in the house tank into the street main at times when the street-main pressure is less than the pressure in the house pipes. A damper regulator in adjusts the combustion of the fire in the heater according to the temperature of the water, and is intended to prevent the formation of steam in the heater. The drip pipe n is continued to a floor drain trap and discharges openly into it. This pipe carries off water from the drip cocks, the relief valve, and the blow-off, or emptying, pipes.
The rising pipes are run under the ceiling at equal distances apart, being supported by bar hangers o hung from the ceiling at intervals of about 8 feet.
The arrangement shown in Fig. 22 is particularly adapted for use in apartment houses, small hotels, and other buildings where steam is not used for power purposes. If the plumber, in making connections like those shown, is careful to line up all the valves neatly in rows, to fit up the pipes straight and equidistant, and to have no crooked threads or marred pipes, the work will be typical of the best modern practice.
