Cyclopedia of heating, plumbing and sanitation; a complete reference work . Fig. 1-6. Automatic Damper-Regulator Operated by Piston Actuatedby Water-Pressure. One piece of apparatus not shown in Fig. 127 is the feed-waterheater. If all of the exhaust .steam can be utilized for heating pur-poses, this is not necessary, as the cold water for feeding the boilersmay be discharged into the return pipe and be pumped in with thecondensation. In summertime, however, when the heating plant in use, a 1eed-water neaier is necessary, as a large amount of heat 147 L38 HEATING AND VENTILATION. 148 HEA
Cyclopedia of heating, plumbing and sanitation; a complete reference work . Fig. 1-6. Automatic Damper-Regulator Operated by Piston Actuatedby Water-Pressure. One piece of apparatus not shown in Fig. 127 is the feed-waterheater. If all of the exhaust .steam can be utilized for heating pur-poses, this is not necessary, as the cold water for feeding the boilersmay be discharged into the return pipe and be pumped in with thecondensation. In summertime, however, when the heating plant in use, a 1eed-water neaier is necessary, as a large amount of heat 147 L38 HEATING AND VENTILATION. 148 HEATING AND VENTILATION 139 which would otherwise be wasted may be saved in this way. Theconnections will depend somewhat upon the form of heater used:but in general a single connection with the heating main inside theback-pressure valve is all that is necessary. The condensation fromthe heater should be trapped to the sewer. 149
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