Cyclopedia of heating, plumbing and sanitation; a complete reference work . ontal flow and return mains, which arelocated below the floor. The manner of connecting with a verticalriser and return drop is shewn in Fig. 94. As the water tends toflow to the highest point, the radiators on the lower floors should befavored by uaking the connection at the top of the riser and takingthe pipe for the upper floors from the side as shown. Fig. 95 illus-trates the manner of connecting with a radiator on an upper floor wherethe supply is connected at the top of the radiator. The connections shown in Figs
Cyclopedia of heating, plumbing and sanitation; a complete reference work . ontal flow and return mains, which arelocated below the floor. The manner of connecting with a verticalriser and return drop is shewn in Fig. 94. As the water tends toflow to the highest point, the radiators on the lower floors should befavored by uaking the connection at the top of the riser and takingthe pipe for the upper floors from the side as shown. Fig. 95 illus-trates the manner of connecting with a radiator on an upper floor wherethe supply is connected at the top of the radiator. The connections shown in Figs. 9G and .»7 are used with theoverhead system shown in Fig. 90. 115 106 HEATING AND VENTILATION Where the connection is t the form shown at the left in Fig. 90,the cooler water from the radiators is discharged into the supply pipeagain, so thai the water furnished to the radiators on the lower floorsis at a lower temperature, and the amount of heating surface must becorrespondingly increased to make up for this loss, as already de-scribed for the circuit Radiator Connected with Bori- EontalFlow and Return Mams Located below Floor. KiK ?•*• Radiator Connected to VerticalRiser and Return Drop. For example, it in the case of Fig. 90 we assume the water toleave at 180 degrees and return at 160, we shall have a drop in tem-perature of ID degrees on each floor; that is, the water will enter theradiator on the second floor at 180 degrees and leave it at 170, andwill enter the radiator on the first floor at 170 and leave it at 100.
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