Boiler for heating and hot-water control method therefor

A method for controlling a boiler for heating and hot-water, the method comprising:

• a flow path formation step of forming at least one of a first flow path along which heating-water passing through a hot-water heat exchanger is supplied to an object to be heated and a second flow path along which the heating-water passing through the hot-water heat exchanger is supplied to a main heat exchanger, based on temperature of the heating-water passing through the hot-water heat exchanger when a simultaneous operation of heating and hot-water generation is requested;
• a heating temperature adjustment step of controlling a heating value of a burner such that the heating-water passing through the hot-water heat exchanger reaches a preset heating temperature;
• and
• a hot-water temperature adjustment step of making an adjustment such that temperature of hot-water generated by being heat-exchanged in the hot-water heat exchanger reaches a preset hot-water temperature;
• the boiler for heating and hot-water comprising:
• a heating-water circulation pipe configured to circulate the heating-water to the main heat exchanger;
• a second connecting pipe to which the heating-water heat-exchanged in the hot-water heat exchanger is released;
• and
• a third connecting pipe configured to connect the second connecting pipe and the heating-water circulation pipe,
• wherein in the flow path formation step, the second flow path is formed by allowing the heating-water passing through the hot-water heat exchanger to flow to the second connecting pipe, the third connecting pipe, and downstream of the heating-water circulation pipe.