Procedure For Cleaning The Heat Exchanger - FULTON FHE-250 Installation, Operation & Maintenance Manual

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9. Remove the burner, being careful not to scrape it on the heat exchanger. Inspect the gasket for
signs of deterioration, replace if necessary.
10. Inspect the burner and wipe off (do not scrub or use a wire brush) any soot or foreign material that
may have accumulated. If available, use compressed air to clear the burner. Wipe out the inside
of the burner with a clean cloth.
11. Check the gap between the electrode and the ground rod.
Gap should be 1/8 inch (3 mm) +/- 1/16.
12. Check the horizontal gap between the point of ignition and the exterior of the mesh burner. The
required gap is 5/16-3/8 inch (8-10 mm).
13. To inspect the gasket between the flapper mounting plate and mesh burner undo the 4 bolts.
14. Check for cracking of the electrode insulator. Do not over tighten the electrode.
15. Use a soft, clean cloth to remove accumulated contaminants from the sight glass.
16. Before re-installing the burner, check the cleanliness of the heat exchanger and the condition of
the combustion chamber. If corrosion or leaks are noticed, contact Fulton.
17. Reverse removal steps for reinstallation of the burner assembly.
18. Reinstall front and top panels.
19. Test fire the boiler and use a combustion analyser to ensure that the fuel/air ratio is set correctly
throughout the range.
Note: This work should normally be carried out in conjunction with the annual removal and cleaning of the burner,
as detailed in Section 4.8 above. Follow steps 1 to 9 above in order to gain access to the heat exchanger.
4.9

PROCEDURE FOR CLEANING THE HEAT ExCHANGER

Inspect the heat exchanger, and clean if necessary using the following procedure:
1. Inspect the tubes for any signs of damage.
2. Vacuum out any deposits inside the combustion chamber area if necessary.
3. If there is a buildup of any kind on the heat exchanger tubes, clean using a dry, stiff nylon bristle
brush. Never use a metallic brush on heat exchanger surfaces.
4. Vacuum again to remove any debris from brushing the heat exchanger.
5. Wipe down with a clean wet cloth.
6. Inspect the refractory at the back of the combustion chamber.
7. If there are any signs of damage, the insulation disc must be replaced.
8. If the ignition assembly or flame rod were removed for any reason, inspect these gaskets for
signs of damage, and replace if damaged.
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FHE-250 MANUAL 09 2014 ISSUE 2