Related illustrations

1098

Steam system operation: call for heat

· p. 192

A building cross section illustrates the call-for-heat sequence in a steam heating system, with a boiler and burner below a room radiator. The thermostat calls for heat and turns on the burner, heating boiler water to bo

1101

Equalizer pipe

· p. 192

A cross-sectional schematic shows a steam boiler supplying a radiator on the floor above through a supply main. Red arrows indicate rising hot steam, while blue arrows indicate returning condensate flowing toward the wet

1097

Steam system operation: at rest

· p. 192

A building cross section shows a steam boiler below a radiator, connected by supply and return piping. At rest, the boiler is two-thirds to three-quarters filled with water at about 70°F, with the same water level in the

1102

Steam system operation: thermostat is satisfied

· p. 192

A building cross section shows a steam boiler and burner below a radiator, connected by steam and condensate return piping. At stage A, the satisfied thermostat turns off the burner. At stage B, steam in the radiator coo

1125

Main air vent

· p. 197

A building cross section diagrams a steam-heating system with a burner-fired boiler, supply main, radiator, steam traps, and condensate return piping. Red arrows trace steam toward the radiator and main-end trap, while b

1100

Dimension "A"

· p. 192

A building cross section shows a steam boiler below a radiator, connected by a supply main and condensate return piping. Red arrows indicate rising hot steam, while blue arrows indicate returning condensate; the radiator