© 2022 Staheli West
213
Tests
Test 15: Fire Tube Cleaning (Page 1)
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Tools needed: Safety goggles, dust mask, shop V, paint suit, 1.5” flue tube brush (Part #
10178) attached to a 7 foot rod, socket set...
1. Drain the boiler: open the main boiler drain valve.
2. Open blowdown valve and the water purge valve to drain additional water (Menu > Operations >
Manual Mode).
(Shut off screen when done).
3. Shut propane valve, disconnect propane hose, remove regulator from the hose and pull the hose
through the rear shield.
4. Remove the rear shield.
5. Remove the blowdown hose and the water purge hose.
6. Remove the left and right heat shields.
7. Remove the rear flue box cover to expose the upper tubes.
8. Disconnect the rear door temperature sensor wire harness.