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Dayton 4lx46 garage heater - metal pipe through attic leaks

Last year I had this garage heater installed professionally. Metal pipe was installed through the attic above the garage, then outside (vent). This vent leaks from what appears to be the inside of the pipe - condensation? The water filters through the seams in the pipe then leaks onto the floor in attic. Any suggestions on how to repair this? I've though of sealing the outside of the pipe but am concerned that the condensation/moisture would travel down to the actual garage heater and then out on to the garage floor. Any suggestions would be appreciated.

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  • fpmelenchuk Nov 15, 2008

    I do NOT have a steam system. It's a garage heater, gas powered, with model number mentioned. This solution has absolutely nothing to do with my problem!

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Sir,

leak causes the water in the drip/catch pan at the base of the heater to rise to . ... Buy water heater drip pan had the logbook open in your garage

Posted on Nov 15, 2008

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PEOPLE.....PLEASE READ THE QUESTION BEFORE ANSWERING!!!! You show your ignorance when you don't!

Basti mentions something about a steam system and sloping of radiator.....what does that have to do with his problem? Doesn't even have anything to do with the item he mentioned.

abhishek33 gives some useful information, however, it has nothing to do with his problem. READ THE QUESTION....HE already has a unit, he has a problem. He doesn't need help in picking out a unit.

Sorry to hijack your post, fp, but I'm really tired of idiots on here who can't read a question when they try to answer it. I'm not talking about wrong answers, but at least answer the question about the product. That's like me asking how to turn on my computer and someone teools me how to start a lawn mower with facts about purchasing a car....

</rantoff>

Posted on Nov 15, 2008

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Hi Deciding what kind of tankless heater to go with depends on a couple of things:

  • The flow rate, or amount of water you'll need heated at one time
  • Temperature rise, or the difference between your groundwater temperature and the desired output temperature

The Federal Energy Policy Act of 1992 set flow limits at 2.2 gallons per minute (GPM) at 60 pounds per square inch (PSI) for household water fixtures [source: U.S. Dept. of Energy]. Some people also use aerators to further limit the flow of water. Tankless manufacturers size their units based on the temperature rise needed for a given flow rate.

To calculate your flow rate, add up the GPM for the household water fixtures you'll need at one time:

  • Bathroom faucet - low-flow faucets use 0.5-1.5 GPM. Standard post-1992 fixtures are set at 2.2 GPM. Faucets before 1992 fall between 3.0 and 5.0 GPM.

  • Kitchen faucet - pre-1992 fixtures use between 3.0-7.0 GPM. The post-1992 standard remains 2.2 GPM, and kitchen faucets don't use aerators, so there are no low-flow numbers.

  • Shower - low flow rate is between 1.0-2.0 GPM. The 1992 standard remains 2.2 GPM. Pre-1992 heads fall between 4.0-8.0 GPM.

Posted on Nov 15, 2008

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Hi

With a steam system, hammering noises may occur if the radiator isn't sloped slightly. Place small shims beneath one end to slope the radiator toward the outflow

If the inlet valve leaks, the culprit is usually a worn valve stem packing. Repairing this involves draining water in the system until it drops below the valve and then dismantling the valve and replacing the packing (this is very similar to a faucet). If you don't know how to drain water from the system, call a plumber or radiant heating service person.

Hope this helps

Posted on Nov 15, 2008

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The leak is probably condensation, if you have enough space you can install a fan where you get condensation.

Try to keep the space where you get condensation as airy as possible.

Posted on Nov 15, 2008

  • Ginko
    Ginko Nov 15, 2008

    The leak is probably condensation, if you have enough space you can install a fan where you get condensation.

    If it is possible install a fan near to the leaking fan or a main fan to aireate the garage.


    Try to keep the space where you get condensation as airy as possible.

    Follow some of the instructions here.


    If you dind out the cold pipe line that is condensing and dripping, you can cover it with insulating enclosure, this will definitively solve the problem.

    FD11 Sheet Metal Pipe Enclosure Detail


    Ensure also that the problem is not a leak from some other line, or rain water dripping throught the roof into the heater.In that case fix the leak.



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