Gas Conversion Burner Combustion Chambers
The combustion chamber for a gas conversion burner is commonly located in the ashpit of a coal-fired boiler or furnace. Figure 2-10 illustrates the positioning of an upshot gas conversion burner. Note that the burner head port is located 1 inch (plus or minus 1⁄4 in) above the grate level. This is a standard measurement when installing an upshot burner in the ashpit of a furnace.
The manufacturer’s installation instructions provided with a conversion gas burner generally include specific instructions on the Recommended burner port location for warm-air furnaces.
preparation of the combustion chamber. The main points you should remember are as follows:
• All openings in the boiler must be sealed.
• The combustion chamber must be thoroughly cleaned.
• Heat exchanger surfaces must be protected against concentrated heat.
• All nonheat transfer surfaces must be protected.
• The combustion chamber must be designed to contain combustion, to radiate heat, and to insulate the ashpit.
Additional information concerning gas conversion burners can be found in Chapter 16 (Boiler and Furnace Conversion)”in V olume 1.