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Venting for Ultra

Sweet_2
Sweet_2 Member Posts: 143
in THE MAIN WALL
The manual says " Locate air inlet pipe penetration no further than 2 ft from vent pipe penetration". So can the location of both be closer than 2 ft ? Id like to take them up the existing upper combustion local that exists. Thanks.

Comments

  • Floyd_7
    Floyd_7 Member Posts: 136
    Anywhere within two feet.....

    however the boiler runs just fine with the cover off.....the boiler in my house has the cover off more than on.....

    Floyd
  • Sweet_2
    Sweet_2 Member Posts: 143
    Floyd

    Whats the cover? Appreciate the clarifacation on measurement.
  • Floyd_7
    Floyd_7 Member Posts: 136
    The boiler front....

    is removable to access the boiler. On the series 1 boiler you had to remove the front cover and the plastic top to gain access to the module to hookup a PC to it. On the series 2 boiler they have placed a plug right on the front panel of the boiler....
    The cover is designed to make the boiler direct vent by sealing the intake when it is on and in place properly.....
    I have just observed that the boiler will work just fine as a nondirect vent boiler, as it is when the cover is removed.

    Floyd
  • Sweet_2
    Sweet_2 Member Posts: 143
    Got it.

    Thanks Floyd. This is my first go at a condensing boiler. Looks like a lot of fun cant wait to do it next week. Thanks.
  • GermanPlumber
    GermanPlumber Member Posts: 58
    Ultra

    Hi everyone long time no see,lol.I installed 4 Ultras so far and do like them. You have to be careful about the piping they need prim/sec and the sizing. The last one came with a new termination and I will try to put a picture in here. Good Luck to all,

    Mario
  • GermanPlumber
    GermanPlumber Member Posts: 58
    Ultra picture 2

  • Floyd_7
    Floyd_7 Member Posts: 136
    Looks good, except....

    becareful about the indirect piping......
    The Ultra needs to have the flow when running the indirect also..... you have downsized the piping for the indirest which will cut the flow to the boiler when making DHW....
    The piping for the indirect should be the same as the boiler space heating piping.....

    Floyd
  • Kal Row
    Kal Row Member Posts: 1,520
    generic to all condensing boilers about venting....

    they use double-ended pressure switches to sense correct combustion air flow (if you put your hand over the inlet or outlet, the burner will cut-out - but the fan still goes - same happens, if you put the blowing end of a vacuum near either one)

    so if you vent the inlet to the outside - (ie not just leave it open at the boiler), then it has to be close to the outlet so that a wind gust doesn’t trip the burner with a pressure differential - if you vent one end out one side of a corner and the other on the other side of the same corner - it's no good even if the are within a foot of each other

    and if the vents are exposed to the prevailing winds head on
    (usually southwest in good weather, and northeast in bad) then it a good idea to put a down elbow for the inlet and a up/down facing T for the inlet

    inlet/outlet grids like the "WM" gird in mario's post help and also keep the pests out

    the fan noise is the only thing audible on thing one these, you cant hear the burners unless you have the cover off, you will never know that the wind is cycling your burners until the switching transistors and relays on the control board give up the ghost - i fix em - so i know - i wish i got as many installs as repairs
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