Don't see this much

[Joehvac25]

Oil fired wtr heater.


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[gravity]

why do oil furnaces always get freakin barometric dampers but, everyone is so dang scared to install a barometric on a gas appliance.

geeeeeezzz!!

[Joehvac25]

why do oil furnaces always get freakin barometric dampers but, everyone is so dang scared to install a barometric on a gas appliance.

geeeeeezzz!!

Not sure, we never install 80% up here so never thought of it lol.


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[philjafo]

why do oil furnaces always get freakin barometric dampers but, everyone is so dang scared to install a barometric on a gas appliance.

geeeeeezzz!!

Because the gap between the water heater and the vent pipe serves that purpose and it doesn't need one.

[meplumber]

I wouldn't put this in the wall of shame. Other than the unsleeved oil line, these old Aero's worked fine. Bock's were the same. They can make more hot water than a family can use.

[Joehvac25]

I wouldn't put this in the wall of shame. Other than the unsleeved oil line, these old Aero's worked fine. Bock's were the same. They can make more hot water than a family can use.

Oil is very expensive is all


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[Joehvac25]

Because the gap between the water heater and the vent pipe serves that purpose and it doesn't need one.

I was thinking furnace for some dumb reason


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[Chuck]

Because the gap between the water heater and the vent pipe serves that purpose and it doesn't need one.

A draft hood (or gap as you put it) serves a completely different purpose than a barometric. According to ASHRAE a draft hood isolates the appliance from the flue allowing combustion to take place without venting action. Since it disconnects the appliance, draft and air through the burner is completely uncontrolled. Draft hoods are designed for a specific set of conditions, which are; a vent of not more than 5 ft in height with 1 or 2 elbows. How often do those conditions get met in the field???

A barometric or draft regulator on the other hand allows for a consistent amount of air through the burner that does not change with changing conditions. Those of us who test for CO find draft hoods spilling quite often, either with higher than normal or lower than normal flue draft pressure. They are not safe under all conditions! A draft regulator is the only way to fix them. A spill switch added to the bottom of a double swing barometric will shut down the burner if the flue gets blocked.

[Chuck]

why do oil furnaces always get freakin barometric dampers but, everyone is so dang scared to install a barometric on a gas appliance.

geeeeeezzz!!

[Joehvac25]

I was thinking furnace for some dumb reason


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Wth guess he did say furnace.


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[Chuck]

I work on quite a few oil burners but have only seen 2 oil fired water heaters. Most of them got changed to electric it seems.

[mattt787]

up here in CT i have worked on so many to oil fired water heaters the pain in the butt part is to clean them when there is no room for your brush

[Tony3696]

I cleaned 2 today, we have tons of em' up here in Patriots country!

[71CHOPS]

hey, that's cool! you can stick a power burner on ANYTHING!!!!LOLOL!!

never seen one.....but we don't have much oil down here.

[philjafo]

A draft hood (or gap as you put it) serves a completely different purpose than a barometric. According to ASHRAE a draft hood isolates the appliance from the flue allowing combustion to take place without venting action. Since it disconnects the appliance, draft and air through the burner is completely uncontrolled. Draft hoods are designed for a specific set of conditions, which are; a vent of not more than 5 ft in height with 1 or 2 elbows. How often do those conditions get met in the field???

A barometric or draft regulator on the other hand allows for a consistent amount of air through the burner that does not change with changing conditions. Those of us who test for CO find draft hoods spilling quite often, either with higher than normal or lower than normal flue draft pressure. They are not safe under all conditions! A draft regulator is the only way to fix them. A spill switch added to the bottom of a double swing barometric will shut down the burner if the flue gets blocked.

So your saying a 30 foot horizontal run is no good for a water heater
Good point though on tje differnce between draft hood and barometric damper, ones powered and the others just natural drafted. Two totally different animals.

[Chuck]

So your saying a 30 foot horizontal run is no good for a water heater
Good point though on tje differnce between draft hood and barometric damper, ones powered and the others just natural drafted. Two totally different animals.

Even natural drafted appliances work far better with a barometric than with a draft hood.

[philjafo]

I'll admit I'm kinda new I've only been an HVAC tech for 5 years, while I've worked on a lot of oil burners (only a couple oil water heaters though) and always have a barometric on oil burners. But never never even heard of one on a natural gas natural draft water heater. Would it help on that has a vent that should work well but doesn't, for example one 90 elbow and say 3 ft horizontal then into an flex aluminum chimney liner, say 2 story house?

[pctech]

might not have been code when it was installed in my area its grandfatherd untill you replace the line tank or valves

[mattt787]

that we do

[mattt787]

so if you have a gas water heater and you have a long flue run take off the natural draft hood and put on a barometric damper would be best i i thought that was so wind would not come down and blow out your pilot