Furnace and water heater vents

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Old 02-15-13, 06:29 AM
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Furnace and water heater vents

Looking at a houw with oil heat - and what I found strange was that the water heater was also oil fired. Apparently the furnace requires a 7" duct up the chimney - and the water heater also requires a 7" duct up the chimney. I am told these should be separate - but the water heater vent goes into the furnace vent - which then goes up the chimney. Is this a problem?
 
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Old 02-15-13, 04:51 PM
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NO, they can be common vented. As long as both have a draft regulator.
 
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Old 02-15-13, 05:26 PM
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I don;t recall a damper on the water heater (but I could be wrong). I know there was one on the furnace - because it was broken
 
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