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Ventilation: Sentinel Plus B no condensate

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  1.  
    • CommentAuthorDur
    • CommentTime3 days ago
     
    Hi

    We have installed a Vent Axia Sentinel Plus B as part of our very long winded restoration. It is not balanced yet as we have yet to add a couple of rooms but with a crude manual set up seems to work fine.

    It has been running since March but on summer bypass since mid May.
    My concern is that it has never issued a drop of condensate. Being busy with other thins we just put a bowl under the drain intending to plumb to waste later.
    The MVHR unit is installed in the end of a utility room downstairs.

    Could condensate be backing up in the unit somewhere? How easy is it to get to the condesate "source" inside the unit?

    Thanks for any thoughts!
    •  
      CommentAuthordjh
    • CommentTime3 days ago
     
    Maybe the condensate is simply evaporating from the bowl as fast as it drips in?
  3.  
    condensate isn't likely to have ogathered since March - not cold enough. The moisture gathers on the heat exchanger as the warm moist air from the house "meets" the cold incoming air (albeit on opposite sides of the pleated exchanger).

    Much of that moisture gets carried out on the outgoing air anyway. The air speed is also key. On low speeds I have found the condensate can be "held" within the heatchanger, but when the fan speed is increased "boost" in winter you should be able to hear an initial trickle of water, running off the exchnage tray. Running constantly at low speeds, can gather maybe half a litre - first time I took the exchanger out, it poured over the carpet :( . Now I run it on boost for a while to make sure the exchanger has cleared the water, before removing the exchanger (for cleaning etc). It would normally have a boost atleast once a day anyway, for showering or cooking, so self corrects, but after a night of low speed and cold temps, the first boost will be force water from the exchanger.

    How much moisture/condensate is generated will depend on lots of variables, but wait for ext temps of below say 5oC, before I'd expect to have anything measureable. Ensure the trap on the outlet pipe for the condensate has water in it, otherwise you could be drawing smells from the connected drain.
    •  
      CommentAuthordjh
    • CommentTime3 days ago
     
    Posted By: GreenPaddyEnsure the trap on the outlet pipe for the condensate has water in it
    Use a dry trap on the condensate drain (HepVO or similar)

    Agree with the rest of the comments.
    • CommentAuthorDur
    • CommentTime3 days ago
     
    Thanks very much for your replies.
    Feeling reassured as we haven't had a drop of water out but it has been pretty warm since late March.
    At the moment not plumbed to waste so I must remember to put a bowl back uner the drain before the weather gets cold!
  6.  
    Hi Dur, can I suggest you add the trap (if you haven't already, even with the bucket, so you're not drawing air from the house through the drain outlet directly to the extract fan, and by-passing the ductwork.

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