Utica Boilers UB95M-200 Installationsanweisungen

Acidic nature of flue gases condensing on aluminum boiler 

sections cause formation of aluminum oxide. This oxide 

formation is normal, and represents negligible mass of 

aluminum consumed by oxidation during life of boiler. 

If left unchecked, this buildup may eventually cause 

blockage of flue gas passages in boiler sections, reducing 

efficiency, and ultimately shutting boiler down due to lack 

of combustion air flow, or drainage of condensate.
Regular service and maintenance by qualified service 

Schedule annual service call by qualified service agency 
which includes:

• Examine flue passages in heat exchanger, burner, 

and condensate lines, and clean (if necessary) follow 

instructions in “Annual Examination and Cleaning of 

Boiler Components” page 26.

• Inspect venting and air intake system for proper 

operation, immediately repair or replace any sign of 

deterioration or leakage, and verify proper reassembly 

and resealing of system.

• Check for and remove any obstruction to flow of 

combustion air or venting of flue gases.

• Follow “Operating Instructions” Section 13. Follow  

“Boiler Startup” Section 5 and “Checkout Procedures 

And Adjustments”, section 6 of Control Manual and 

Troubleshooting Guide.”

• Inspect condensate drain line for proper operation. 

Check for deteriorated or plugged condensate drain line.

• Check all gasketed joints for leakage. Tighten bolts or 

replace gaskets as needed.

• Remove jacket front and top panels, check for piping 

leaks around safety relief valve and other fittings, and 

repair if found. Do not use stop leak compounds.

Verify boiler area is free from combustible materials, 

gasoline, and other flammable vapors and liquids.

Circulator pump and blower fan motor furnished with 

boiler are permanently lubricated from factory and 

require no further lubrication. Additional or non-factory 

supplied pumps and/or motors should be lubricated 

according to pump and/or motor manufacturer’s 
instruction.

Check for and remove any obstruction to flow of 

combustion air or venting of flue gases.

Check boiler area is free from combustible materials, 

gasoline, and other flammable vapors and liquids.

Remove jacket front and top panels and check for 

piping leaks around safety relief valve and other 

fittings. If found, contact qualified service agency. DO 

NOT use stop leak compounds.

Test safety relief valve. Refer to valve manufacturers 

instructions packaged with safety relief valve.

Visually inspect venting and air intake system for 

proper operation. If vent or air intake show any signs 

of deterioration or leakage, contact qualified service 

agency to repair or replace them immediately and to 

insure proper reassembly and resealing of system.

Visually inspect condensate drain pipe for proper 

operation. If drain pipe shows any signs of blockage, 

leakage, or deterioration contact qualified service 

agency to clean, repair, or replace it immediately.

Check air vent(s) for leakage.

Periodic inspection of low water cut off is necessary, 

including flushing of float type devices. Refer to low 

water cut off manufacturer’s specific instructions.