Home explosion due to furnace malfunction

[jdblack]

Check it out. Chime in.

http://www.theindychannel.com/news/l...ome-owner-says

[jdblack]

With all of the safeties in place it's hard to imagine this. Maybe DIY or a setup because the house didn't sell.

[Hwolfe]

I agree. Don't see a furnace gas explosion causing that amount of a blast. A lot of those suburb homes in Indy are the jagoe concrete slab homes maybe a huge gas leak and build up under the slab could but still hard to believe. I think bomb makers or meth heads.

[samejj]

safeties can be jumped around, a little knowledge can be dangerous.

[Chuck]

Safeties don't do any good if a piping joint outside the furnace starts leaking.

[jdblack]

safeties can be jumped around, a little knowledge can be dangerous.

You would have to jump out at least 3 switches and then fool a thermocouple in order for a gas valve to spew.

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[samejj]

Safeties don't do any good if a piping joint outside the furnace starts leaking.

low gas input and furnace shouldnt light or stay lit.

[gravity]

they can surely blow up a house if you dont know what your doing to them.

in my neck of the woods, a HO bought a gas valve from fergusons, installed it, and blew up the house, then sewed fergusons for selling him the valve. also a HO who installed a gas drier blew his house up the beginning of this year i believe.

sucks that it happened. do you really think they will be able to figure out what caused it?

[2sac]

I grew up in a predominantly Italian suburb of Chicago. My next door neighbor , grew grapes in the backyard to use in his homemade wine. He also made dry sausage in his basement. He was also sent away to the federal pennitentiary. A house blew up about 3 blocks away from us. I remember finding debris in my front yard. No fire though. The house was completely leveled. The homeowner had sent his family back to Italy and he had mysteriously disappeared. Just sayin'

[jdblack]

Looking at the pictures I don't see how they will ever know.

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[Chuck]

You would have to jump out at least 3 switches and then fool a thermocouple in order for a gas valve to spew.

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And how do we know it was the gas valve??

[OldSchoolMech]

A house blew up a town over from mine. The HO was saying gas leak. They looked into it and saw that thier was saw marks on the gas piping and no pictures where found etc. The insurance company doesn't wanna pay for this. They have ways of knowing what happend.

[Chuck]

low gas input and furnace shouldnt light or stay lit.

Furnace doesn't have to light to cause an explosion, all it would take is for the spark or hot surface igniter to energize.

[2sac]

Let's say furnace was leaking for whatever reason and filled the house with gas. I'd imagine with such a high concentration, almost anything electrical could have sparked ignition couldn't it?.

[jdblack]

So could we say that a 90%er with a piped intake and exhaust would prevent a gas buildup inside the home if it was the gas valve?

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[BaldLoonie]

So far this is just 1 possibility. The ex husband commented that his daughter reported that the furnace was out. Later it was working. This theory has not come from one of the many officials from many jurisdictions investigating the explosion. I don't think they even know which house went first since there 3 in a row leveled.

From the public safety director: "It appears so far, he said, that natural gas played a role in the blast, but it’s not yet clear whether it was an accident or whether it was intentionally set."

[2sac]

So far this is just 1 possibility. The ex husband commented that his daughter reported that the furnace was out. Later it was working. This theory has not come from one of the many officials from many jurisdictions investigating the explosion. I don't think they even know which house went first since there 3 in a row leveled.

From the public safety director: "It appears so far, he said, that natural gas played a role in the blast, but it’s not yet clear whether it was an accident or whether it was intentionally set."

Exactly the point I tried to make earlier

[2sac]

So could we say that a 90%er with a piped intake and exhaust would prevent a gas buildup inside the home if it was the gas valve?

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Have you ever had a GV fail open? I've seen some bleed by but to create such a large explosion you need a ton of fuel. In answer to your theory, it makes sense.

[jdblack]

Have you ever had a GV fail open? I've seen some bleed by but to create such a large explosion you need a ton of fuel. In answer to your theory, it makes sense.

Negative I've not had one fail open but I'm still a greenhorn

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[jdblack]

So far this is just 1 possibility. The ex husband commented that his daughter reported that the furnace was out. Later it was working. This theory has not come from one of the many officials from many jurisdictions investigating the explosion. I don't think they even know which house went first since there 3 in a row leveled.

From the public safety director: "It appears so far, he said, that natural gas played a role in the blast, but it’s not yet clear whether it was an accident or whether it was intentionally set."

So what would cause a furnace to intermittently function? A SV9500.....

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