|Air Capacities (Including Main and Atomizing Air)|
|Burner Designation||28"wg air pressuredrop across burner||44”wg air pressure drop across burner|
Burner Block/Installation. Burner Blocks are cast refractory rated for 1450oC furnace temperature. They should be supported securely in the furnace wall by a layer of castable refractory at least 9" thick all around the Burner Block, extending back to the furnace shell and securely anchored to it. Burner Blocks are replaceable in the field except for the 2514-10A, whose mounting must be returned to the factory for Burner Blocks replacement. The 10A size is also available with a short Burner Blocks that extends 2" past the mounting plate. The remaining Burner Block length is then field constructed. For furnace walls thicker than the length of the Burner Block, tunnel beyond the end of the Burner Blocks should be flared at least 30°, starting at the OD of the Burner Block. If this is not practical, consult ATEC Experts for specific recommendations.
Jacketed Burner Blocks. 2514 Burners are available with support jackets around the Burner Blocks for applications where the Burner Blocks is not supported by furnace refractory. Jackets are available in three different metals and have maximum temperature ratings for each. They must be protected with sufficient insulation so as not to exceed rated temperature. Maximum temperature rating for jacket metals depends upon frequency of heat-up/cool-down
cycles. As an example, batch annealing furnaces that are heated and cooled every day should use the "intermittent exposure" ratings. Continuous annealing furnaces that remain at the same temperature for months at a time, can use the higher "continuous" rating.
|Designation||Jacket Metal||Continuous max.temp||Intermittent exposure|
|2514- AS||carbon steel||400O C||400O C|
|2514- A1||304 SS||850 O C||750 O C|
|2514- A2||309 SS||1100O C||1050OC|
|Complete burners include Burner Block, mounting plate, precise oil control valve and an observation port into which a small quantity of atomizing air is introduced to keep the glass clear. Order pilot tips separately.|