exhaust to chimmney

frank_55

yes it is gas converted from oil

frank_55

i have a box between the boiler and the chimney and it is open on the bottom is this right or wrong.the box is about 18"x24"

Unknown

Without further info I would

say that is the draft hood on a gas boiler of furnace. Yes it does belong there.

frank_55

Also and home inspector told me to fix it.

frank_55

Also and home inspector told me to fix it.

Edward A. (Ed) Carey_3

Does it look like this???

See the attachment, bottom of page 13, left side.

If it looks like this and it is open on the bottom, with a metal baffle in the middle, it is supposed to be open on the bottom.

If this is it, the inspector must not be familiar with a horizontal draft diverter.


Ed Carey

EDIT,,,

http://www.standexadp.com/pdf/catalco.pdf

Cut and paste the link above, it may be faster.
Link below opens very slow.

Ed

Bob Harper_2

The larger question is, are you getting flue gas spillage from that draft hood? If there is spillage, then you need a pro to perform a Level II inspection of the chimney and perform a Worst Case Depressurization Test and combustion analysis. Heat likes to rise so horizontal vent runs tend to spill more than vertical. The biggest problem with draft hoods is that they work! Their original intent was to provide relief during flow reversal so it doesn't extinguish the pilot. That means spillage (if more than 45 seconds, it is then backdrafting).

Safety first!
Bob

Bob D._2

Mystery Box

Most "Home Inspectors" can only learn so much through their correspondence course . . . .

Bob Harper_2

Home Inspector bashing again

Bob D., I don't think it is appropriate to bash an entire industry the way you have. Home inspectors are "generalist". That means they know about a lot of things but they don't profess to know everything about any one subject the way others do. Their job is go spot defects or potential defects so more qualified people can address them. If a H.I. calls out a horizontal draft hood because, a) he's never seen one before or b) he sees signs of spillage and thinks a pro should check it out, why do you have a problem with that? Would you rather he put on blinders and never call out anything?

For your information, most home inspectors attend training sessions several times a year, as required to maintain their certifications. Typical presenters of this training are people with expertise in a focused area such as hydronics, plumbing, chimneys, roofing, etc. If you have a problem with the home inspectors in your area, I suggest you do like I did and get involved with them. Let's work to raise the collective bar and leave the negative talk alone.
Bob H.

Edward A. (Ed) Carey_3

Very good point

Bob H has made a good point.

The inspector may not be challenging the presence of a horizontal diverter. He may be addressing a spillage issue, which is definitely a problem.

Is there any spillage from the diverter? Did anyone test for CO and/or spillage of exhaust gases?

Ed Carey