Tile and Ignition | 4225 EcoFornax ™ SLEx
The SLEx provides a self-supporting, refractory tile.
Burner Size
-6
-7
-8
-9
-10-A
-10-B
-12
-14
-16
Estimated Weight with Refractory Tile (lbs)
135
140
195
270
480
510
590
670
770
BURNER DESIGNATIONS
Designations
-6
-7
-8
-9
-10-A
-10-B
-12
-14
-16
Burner with Refractory Tile
4225-6-A 4225-7-A 4225-8-A 4225-9-A 4225-10-AA 4225-10-BA 4225-12-A 4225-14-A 4225-16-A
DIRECT SPARK IGNITION
The SLEx comes standard with an air-assisted direct spark igniter. Igniter air should be piped into the igniter from before the air control valve, and the pressure should be controlled through the use of a needle valve or LOV. If a VFD is being used on the combustion air blower, compressed air can be used to supply adequate pressure to the igniter. If furnace pressure constantly fluctuates, add a regulator to the igniter air line that is differential to the furnace chamber. Refer to Bulletin 4051 for additional information. The use of a standard a 6000 V secondary ignition transformer with a timed ignition period is recommended. Half wave ignition transformers should not be used.
PILOT ARRANGEMENT DESIGNATIONS
Air-assisted Igniter
1
3
UV Port Observation Port
2
The standard burner is supplied with an igniter. Self-checking UV scanners (sold separately) are recommended for flame supervision.
Arrangement designators are specified relative to the main air connection at 12 o’clock. The igniter and UV scanner positions are relative to the air inlet (1 - 90° clockwise, 2 - 180° clockwise, 3 - 270° clockwise). Good practice dictates that neither the source of ignition nor the flame detector be below the centerline of a horizontally-mounted burner. The igniter and observaton ports can be swapped in the field as necessary.
Bulletin 4225 page 5
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