| 摘要 |
Provided is a gas boiler having a enclosed tank with no diaphragm, in which the volume of the cistern tank can be reduced, the enclosed tank storing returned heating water and absorbing a pressure change of the heating water. The tank having no diaphragm is constructed enclosed such that an internal space thereof is isolated from the atmosphere, and includes a heating water inlet through which the heating water is introduced, a heating water outlet through which the heating water is discharged toward a circulation pump, a water level detecting sensor which detects the water level of the heating water stored in the tank, and a safety valve for maintaining the pressure of an internal space of the tank to less than a predetermined value. |
