| 摘要 |
The present concept is a modulating burner system which includes a speed control (110) responsive to inputs received from a thermostat 108), the speed control modulating a blower (104) which provides combustion air (152) and a vacuum proportional to the speed of the blower. The modulating burner system further includes a gas amplifying valve (106) in communication with the vacuum via a vacuum conduit (114), the gas amplifying valve providing modulated combustion gas (148)responsive to the vacuum; wherein modulated combustion air and gas communicated to a burner for continuously variable firing rates of 50 to 100% of the maximum firing rate. The modulating burner system further includes a damper (116) for smoothing out vacuum spikes and fluctuations. |
