Large fluctuations in negative pressure in the heating furnace
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My installation is equipped with two heating furnaces that share a blower and an exhaust fan; each heating furnace has its own chimney. When the blower and exhaust fan are operating normally, the flue dampers of both heating furnaces are fully closed. In the event of a failure of the blower and exhaust fan, the flue dampers of both heating furnaces are fully open. The installation has just started operating normally; the blowers are functioning properly. However, the negative pressure in one of the heating furnaces fluctuates significantly, and the oxygen level is also high, with these values changing along with the negative pressure. Could everyone please help analyze the reasons for this.
The oxygen content is related to the negative pressure; if there are large fluctuations in negative pressure, it is necessary to check whether there is a fault with the valve that leads air from the furnace into the fan, whether the locator is inaccurate, or whether the pressure of the instrument air is unstable. Check whether the opening degree of the air valve is too large; it also depends on the combustion condition of the burner.
Check the areas where there is severe air leakage.
The pressure of the constant-flame lamp is 3 kilograms – could it really have such a significant impact on the negative pressure in the heating furnace?
The pressure of the constant-flame lamp is 3 kilograms – could it really have such a significant impact on the negative pressure in the heating furnace?
A pressure of three kilograms on the perpetual light will not cause any problems; check where there is air leakage
Conduct thorough analysis of the furnace’s thermal efficiency data
Dear； It is the blower (air damper) that regulates the oxygen content, while the exhaust fan (flue damper) is what controls the negative pressure
Check whether there are any abnormalities with the flue dampers