Related illustrations

0873

Flow control valves

· p. 149

A building cross section shows a two-zone hot-water heating system with a basement boiler and a radiator and thermostat in each zone. Red supply piping carries hot water to the radiators, and blue return piping carries c

0871

Zone control with valves

· p. 148

A building cross section shows a boiler supplying two hydronic heating zones, each with a radiator and thermostat. Red piping carries hot water through separate zone control valves to the radiators, while blue piping ret

0870

Zone control with pumps

· p. 148

A building cross section shows a boiler supplying two hydronic heating zones, each with a radiator and thermostat. Red piping carries hot water from the boiler to the radiators, while blue piping returns cooler water to