| 摘要 |
PURPOSE:To ignite an additional boiling burner without changing a hot water feeding temperature even in the case of performing the hot water feeding operation at a hot water feeding device in which an amount of combustion is adjusted with a proportional valve which is common in an additional boiling operation and a hot water feeding operation. CONSTITUTION:A microcomputer 602 to be installed in a control device 600 for a hot water feeding device 100 having an additional boiling function has a programming of an additional boiling ignition function 607 during a hot water feeding operation in which in the case that an additional boiling operation is started during a hot water feeding operation, gas is supplied to an additional boiling burner 205 while an amount of gas to be supplied to the first and second hot water feeding burners 203, 204 is kept constant to perform an ignition at the additional boiling burner 205, and after ignition, the proportional valve is controlled in such a way as an amount of gas supplied to the first and second hot water feeding burners 203 and 204 becomes an amount of supplying suitable for a hot water feeding operation. |
