Three heating furnaces share one chimney; how to light them?
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To make comprehensive use of the flue gas heat. Seeking guidance
Allow natural ventilation before lighting the furnace; adjust the flue dampers slightly to close them – too high a negative pressure makes it difficult to keep the pilot light burning. Ensure only the appropriate negative pressure exists inside the furnace, and once the burner is lit, activate the waste heat recovery system
Three furnaces share one chimney; when one is in use, how can the other two be activated?
The three furnaces share one chimney; the flue dampers should be separate, allowing for individual control of the negative pressure in each furnace chamber.
Control the negative pressure in the furnace using flue dampers and air valves in combination.
As long as the flue dampers are separate, they have no impact on each other; it’s the same as operating individual chimneys.
The flue dampers for the three furnaces are installed separately; there is no need for a single overall flue damper