Tile | 5514 Oil Burners
Flame Supervision. An ultraviolet cell‡ will monitor pilot or main flame on gas or oil. For maximum safety, North American urges interrupted pilots when flame safeguards are used--pilots should be on only for a preset ignition period (usually 15 seconds), after which flame supervision detects main fire only. Adapters for mounting flame detection devices on 5514 Burners are tabulated on Bulletin 8832. Tile/Installation. Burner tiles are cast refractory rated for 2800°F furnace temperature. They should be supported securely in the furnace wall by a layer of castable refractory (not insulation) at least 9" thick all around the tile, extending back to the furnace shell and securely anchored to it. (See Supplement DF-M1.) Tiles are replaceable in the field except for the 5514-10, whose mounting must be returned to the factory for tile replacement (or purchase a spare mounting plate with a tile cast onto it). Complete burners include tile, mounting plate, and an observation port into which a small quantity of atomizing air is introduced to keep the glass clear. Order Sensitrol™ Oil Valve and pilot tips separately. See 5514 Dimension Sheet for recommended Sensitrol™ oil valve and premix pilot tip. Jacketed Tile options are available for applications where the tile 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.The 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.
Burner Nose options are available for sizes shown below and can be specified in the product number. The burner nose establishes main combustion air flow and influences flame propagation. Nose material is either cast iron that is suitable for cold air applications up to 1800°F, or cast stainless alloy for preheated air (maximum 700°F) applications up to 2400 2°F.
Mat'l
Cap'y -6
-7 -8A -8B -9 -10
Cast iron 1.0 Cast Alloy 1.0
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Cast iron
1.1
Cast Alloy 1.1 Cast iron 1.2 Cast Alloy 1.2 Cast iron 1.3 Cast Alloy 1.3
Additional options are available for the 5514 burner but require consultation with North American for application and ordering information. See Sheet 6514-3 for an overview of burner options. to increasing blower pressure, an oversized air inlet can be purchased separately for these size burners. The connections are SW-type (slip-on sleeve or welded construction) and are one pipe size larger than the standard supply. Nose and oversize air connection part numbers can be found in supplement literature (see Parts List and Burner Options documents). The product designation 1.0 represents standard main air capacity shown on page 1. Use of an extra capacity burner nose will result in either more air at 16 osi or standard air flow at lower pressure. Extending the capacity of the burner by increasing air pressure beyond 16 osi, or using the extra capacity nose, is acceptable for light oil applications. Specific applications involving heavy oil and extra capacity should be reviewed with North American. Also, when firing extra capacity, the combustion air flow velocity within the supply piping, and associated pressure loss, can be excessive for some burners. The -8B, -9 and -10 products when operated at 1.2 or 1.3 capacity will develop high pipe velocity based on the burner’s air connection size. As an alternative
Continuous Intermittent
Designation Jacket Metal max. temp.
exposure
700°F 1600°F 1900°F
700°F 1500°F 1800°F
5514- -LC 5514- -L4 5514- -L9
carbon steel 304 stainless 309 stainless
‡ Cleaning air must be introduced into the port downstream of the sensor to keep oil and poc's off the lens.
Bulletin 5514 Page 3
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