| 摘要 |
<p>A gas burner system for a heating device includes a burner, a valve assembly for controlling a flow of fuel to the burner, a blower assembly for directing air to the burner, and a control system. The burner includes one or more burner plates for facilitating the mixture of air and fuel to be combusted in a combustion chamber. The control system is configured to independently control the valve assembly and the blower assembly according to a control profile, for generating a plurality of air /fuel mixtures each configured for operation of the burner at a different firing rate. By mapping the characteristics of both the gas valve and the combustion blower independently, the burner system is assured of operating at the proper air /fuel mixture over a very wide range of firing rates, with a turndown ratio of 30:1 or greater, and within ANSI safety and performance standards.</p> |
