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Question:

How can I prevent my water heater chimney from downdrafting when my attic fan is running?

I have a 38,000 input BTU water heater venting into a masonry chimney. I recently had the flue relined with a 4 inch stainless steel liner to bring it up to code and also to allow for better draft. However, I am still running into the same problem I had prior that when my attic fan is running it causes the chimney to downdraft. If the water heater is running first to heat the flue, and then the attic fan is turned on after, the draft is ok. But I can't count on the attic fan never running or the water heater always running. I know the problem is because the water heater is in the basement, below the neutral pressure plane of the house. But what can I do so I can run the attic fan at will and not have to worry about the water heater?

Answer:

Wow, you're a girl, you're supposed to be scared of those things :D Well, for you to model such a weird device, you need some woods and plastics. Hope this helps :)
This would be considered normal. Limit his fluid intake before bed. I tell my four year old no drinks after 6 (his bedtime is 8) and I make sure he goes to the bathroom twice before I tuck him in. There is also such a thing as an immature bladder, and that is a bladder that is just not ready to perform as one would expect a mature bladder to perform. If he has gone through the night before without wetting, you may want to look at your routine and figure out what changed. Bed wetting can sometimes be a response to a large change in a child's life, such as a move or a new sibling. In this case, limit his intake, make sure he goes before bed, and it should pass. If he has never slept the whole night without an accident, then it is probably a physical problem like an immature bladder, but get it checked by your doctor to make sure, as I am no doctor. In this case I would recommend the same fluid restriction, potty times, and add Good Nights, a pull up type garment available in the diaper aisle. My cousin had an immature bladder and had to wear these until he was about 10. He liked them because they gave him the freedom to sleep over friend's houses without having to worry about embarrassing himself peeing in the friend's bed. Good Luck

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