Bulletin 4682 Page 6
IMPORTANT INFORMATION!!
DO NOT attempt to remove electrode or backplate from burner before reading instructions.
removing the backplate with attached electrode assembly. To replace or adjust the electrode tip, loosen the set screw in the electrode coupling. Reverse the procedure when installing the backplate and electrode assembly. In normal operation the electrode must be able to spark to the inside wall of the 4682 burner nozzle exit.
Due to electrode/burner nozzle interference, the 4682CFI internal assembly cannot be removed from the burner when the electrode is in its normal operating position. If it is necessary to disassemble the burner for maintenance, loosen the outer electrode lock nut and rotate electrode 180° so that the electrode will pass through the burner center hole when
Electrode lock nut
180°
Electrode will clear nozzle center hole when rotated
Interference will prevent electrode removal when in normal operating position
SETTING THE ELECTRODE LENGTH
- Measure distance from center premix hole exit, to backplate flange with gasket (Dimension X) - Set electrode length (Dimension Z) to (X) + 5⁄16 " - If needed, rod end can be rotated to maintain correct spark gap
X (Including Gasket)
Spark Gap "G" 3⁄32 - 1⁄8 " (when electrode installed)
Z = X + 5⁄16 "
5⁄16 " +/- 1⁄16 "
To remove or adjust electrode tip length, loosen this screw and reposition the electrode
Electrode clearance when roated for removal
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