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Peerless Boiler WBV-03-85W Target Wall Position

Albie
Albie Member Posts: 18
in THE MAIN WALL

Hello,

After cleaning the flue ways from the top of the boiler I opened the burner door to access the combustion chamber to vacuum any soot that may have fallen to the bottom of the chamber. I was confronted with what I believe to be a target wall and couldn't even see the bottom of the chamber. It was very close to the front of the chamber and burner head? I'm thinking this is not correct?

Albie

Comments

  • HVACNUT
    HVACNUT Member Posts: 7,016

    Pics? The target wall should be flush against the back of the chamber.

  • HydronicMike
    HydronicMike Member Posts: 145

    Probably target wall fell forward.
    Usually happens by improper maintenance. Especially improper brushing.
    Could also happen from impingement over a long period of time.
    If it’s not damaged it should push back into its proper position and stay there pretty tight.
    If it doesn’t it needs to be replaced.

  • Albie
    Albie Member Posts: 18

    The boiler was installed by an oil company approx 5yrs ago and was serviced by them up to a year ago. The first year I discovered they had installed it with a 0.60gph nozzle, an F4 head an no low fire baffle, also the wiring for the HWH zone pump was not done correctly. All this I discovered from reading the manuals for the burner and controls. Hence I canned the oil company. I wonder if they even opened the combustion to clean and maybe the target wall was dislodged during shipping and installation.

  • Albie
    Albie Member Posts: 18

    *wiring was done incorrectly

  • Albie
    Albie Member Posts: 18

    Very baffling, excuse the pun

    EdTheHeaterMan
  • Albie
    Albie Member Posts: 18

    Next week sometime I'll go down to the basement to finish the tune up, I'll take pictures before I move anything and post.

  • HydronicMike
    HydronicMike Member Posts: 145
    edited September 26

    If the target wall was dislodged before installation it probably would’ve sooted up pretty bad by now.
    When you open up you’ll see brush marks on it, if that was the cause

    Nozzle size also depends on pump pressure which gives you the firing rate to select the proper head…and all of the other numbers.

  • EdTheHeaterMan
    EdTheHeaterMan Member Posts: 11,128
    edited September 26

    It appears that the boiler in question should come with an AFG burner with the F3 head and a low air flow baffle. However the Beckett NX burner in that same boiler can use a 0.65 nozzle at 170 PSI oil pressure to get the same firing rate. I'm not sure that the 0.65 nozzle was an optional firing rate when using the AFG burner or the most recent service tech didn't have the correct 0.75 nozzle with him at the time of the service.

    I can verify that sometimes my nozzle assortment box was not full on a Friday when the last burner maintenance was scheduled and I did use a "close enough" substitute nozzle and adjusted pump pressure as needed to get the correct combustion numbers.

    Edward Young Retired

    After you make that expensive repair and you still have the same problem, What will you check next?

  • HVACNUT
    HVACNUT Member Posts: 7,016

    Its got a .60 nozzle, but do you know what the pump pressure is? For all you know pump pressure is 200 psi and firing at .85 GPH. There are other companies. Its not DIY of you don't have the correct instruments.

    On the NON combustible side, did the installer not run the wire from the indirect C1 on the zone panel to ZR on the Hydrostat?

  • Albie
    Albie Member Posts: 18

    HVACNUT - Correct the installer did not run the wire you indicated. I have to assume that the pump pressure came set at 140psi. The following year after installation the technician that came to service the boiler was somewhat confused as why the .60 gph nozzle was installed, he installed a .85 gph before leaving and that's what has been the case for the last 4yrs or so. I do have an electornic combustion analyzer and pump pressure gauge kit. I to am a bit confused as how the boiler could have functioned given the position of the target wall, maybe I dislodged it during cleaning the flue ways?

  • Albie
    Albie Member Posts: 18

    Come to think of it my wife on occasion would complain of a sooty smell.

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