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Draft Hood


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I can't recall having ever seen that style draft hood on a gas-burning appliance - only oil. And even then it's sideways. When the boiler hasn't fired in a while and the air in the chimney is cold, that thing is going to spew gas exhaust like a firehose.

On another note, do you often see pilot lights tapped before the gas shut-off valve? We only see that on really ancient installations - like pre WWII. Never on an installation as recent as this.

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Jim's comments made me look at the photo again. I looked at a larger image and it looks like the front inside panel is rusted through. That usually means that the combustion chamber liner/heat shields or the furnace cement between boiler sections have failed and water vapor from combustion is saturating the insulation. May be time for a new boiler.

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