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WEIL MCCLAIN ULTRA 155 SERIES 1

TJK500
TJK500 Member Posts: 16
in THE MAIN WALL
Looking for some help with an ignition issue on the WM ULTRA 155. The boiler has been installed for 18 years with its first service 3 years ago. It is LP at 9600' elevation. The gas valve, ignitor and flame sensor were all changed 3 years ago. Just recently the boiler has been having a hard ignition issue. The homeowner says that he can hear the boiler light when there is a call for heat. Contractor checked gas pressure and combustion and all is good according to the manual. Does anyone on here have experience with these boilers?
THANKS

Comments

  • HVACNUT
    HVACNUT Member Posts: 6,331
    I haven't seen a Series 1 in forever. 
    What are the "good" combustion numbers?
    When was the last time (if ever) it was opened and cleaned using the maintenance kit?
    Is it draining properly?
  • kcopp
    kcopp Member Posts: 4,472
    How does the mesh burner look? Any cracks or splits?
  • TJK500
    TJK500 Member Posts: 16
    The home owner has no record of the boiler ever being serviced in the 18 years he has owned it. With that being said I opened it up and we are replacing the boiler. I found parts for it but couldn't justify making an attempt to clean and service. Thanks for all of the input. Should have him up and running by Friday

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