Lochinvar SNA285-125 Manuale Utente

 

• Address reported problems

  • Inspect interior; clean and vacuum if 
  

necessary; 

 

• Clean condensate trap and fill with fresh 

  

water

 

•

 Check for leaks (water, gas, flue, 

  

condensate)

 

• Verify flue and air lines in good condition 

 

  and sealed tight

 

• Check system water pressure/system 

  

piping/expansion 

tank

 

• Check control settings

 

•  Check ignition and flame sense electrodes      

  (sand off any deposits; clean and 
       reposition)

 

• Check wiring and connections

 

•

 Perform start-up checkout and 

   performance verification per Section 9 
 

  in this manual.

 

• Flame inspection (stable, uniform)

 

• Flame signal (at least 10 microamps at 

 

   high fire)

 

•

 Clean the heat exchanger if flue 

   temperature is more than 54°F above 
 

  return water temperature.

 

• Check anode rods.

 

• Check Delta T (Temperature Rise)

 

 • Clean heat exchanger

 

 •

 Remove and clean burner using 

 

   compressed air only 

 

 • Clean the blower wheel 

 

•  Check water heater area 

 

• Check vent piping

 

• Check air piping

 

• Check relief valve

 

• Check condensate drain system

 

• Check Delta T (Temperature Rise)

 
 
 

      • 

 

Check water heater piping 

        (gas and water) for leaks

 

• Operate relief valve

       

Installation & Service Manual

TM