Clean Combustion Chamber [At Minimum, Perform Annually]; Check And Clean Condensation Line And Trap [At Minimum, Perform Semi-Annually] - Gradient syncFURNACE mOD-200 Installation & Operation Manual

CLEAN COMBUSTION CHAMBER [AT MINIMUM, PERFORM ANNUALLY]:

1. With burner still removed, inspect internal surfaces of combustion chamber.
2. Vacuum inside combustion chamber using a vacuum with nylon brush and high-efficiency filter.
3. Inspect the condition of the insulation disc at the back of the combustion chamber. Cover it to
protect it from being damaged or becoming wet during the cleaning process. If insulation is
damaged replace with new part once combustion chamber cleaning is complete.
4. Use dry rags or plastic to protect gas and electrical components inside syncFURNACE from being
damaged by dripping or spraying water.
5. Rinse the inside of the combustion with water, and if necessary, solvent-free cleaning agent to
remove residue on the inside surface.
a. Remove deposits of soot with alkaline agents containing tenside.
b. Remove coatings and yellowish brown surface film with phosphoric acid-based "Antox 75 E
Plus" or citrus acid-based CitriSurf 3050 manufactured by Stellar Solutions Inc.
6. Brush surface using a NYLON BRUSH – DO NOT use a metal wire brush, a metal brush will
contaminate heat exchanger material and cause premature failure.
7. Once combustion surface is clean, rinse thoroughly with water.
8. Re-install burner in reverse order as listed in burner cleaning section. Tighten 4 burner nuts to 10
lb. ft. (13.6 N*m).
9. Leak test gas components and burner door prior to turning the gas back on.
10. Follow the below Check and Clean Condensation Line and Trap instruction to ensure that any debris
cleaned from combustion chamber is not residing in condensation line and trap.

CHECK AND CLEAN CONDENSATION LINE AND TRAP [AT MINIMUM, PERFORM SEMI-ANNUALLY]:

1. Remove gear clamp connecting condensation line to heat exchanger (at bottom back of heat
exchanger).
2. Remove screws that hold condensation trap onto front panel.
3. Inspect entire condensation trap system for debris buildup and points of blockage.
4. Disassemble trap and clean using water or solvent-free cleaning agents to remove residues -
a. Remove deposits of soot with alkaline agents containing tenside.
b. Remove coatings and yellowish brown surface film with Axiom Industries Axi-therm F9A or
Axi-therm F Steel chemical or phosphoric acid-based "Antox 75 E Plus" or citrus acid-based
CitriSurf 3050 by Stellar Solutions Inc.
5. If necessary, clean drain lines using same cleaners as used on the trap.
6. Re-assemble condensation trap – ensure correct sequence of component placement.
7. Re-install trap and drain lines in reverse order.
8. Fill condensation trap by pouring water into combustion chamber or through Flue Gas Outlet
termination.
9. Inspect and ensure condensation trap and lines (internal & external) are completely sealed and
drain freely.
If the condensate does not drain freely from the heat exchanger to the drain, condensate
will accumulate on the bottom inside the combustion chamber. This will result in burner
!
ignition failure and shut-down. The combustion chamber refractory will become wet at
NOTE
the bottom portion. DO NOT restart the water heater until refractory has dried. Igniting
the burner with a wet refractory will damage it. ONLY USE DRY OR NEW REFRACTORY.
syncFURNACE OD Instruction & Installation Manual – Rev 09
Follow cleaning agent manufacturer's safety instructions and wear appropriate
protective equipment. Cleaning agents must not contain hydrocarbon-based solvents or
potassium.
A GAS LEAK TEST MUST BE PERFORMED PRIOR TO PLACING THE PROUDCT BACK INTO
SERVICE.
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