Advice on Air Vent.

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Dave 1234
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Stoker Coal Boiler: 1948 International boiler, EFM S-20 stoker
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Post Tue. Sep. 24, 2013 8:57 pm

Veteran plumbers,
I should have an 18'' run of pipe before my spirol air scoop. But ......can the air be extracted with a shorter run of pipe leading to the vent ?
System is one mono loop of 1 1/4 and one loop of 1''.
The spirol vent worked great before but now I need to do a little change and if it will work with a shorter lead it is way neater to plumb in .

Thanks, Dave.

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Rob R.
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Location: Chazy, NY

Post Tue. Sep. 24, 2013 9:17 pm

My Spirovent instructions say that it must be mounted in a horizontal pipe, but that a minimum amount prior to the unit is not required.

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blrman07
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Location: Girardville Pa.

Post Wed. Sep. 25, 2013 8:56 am

The question to be considered is the flow rate. The faster the flow rate the longer it will take for it to scoop the air from the water. Length of pipe doesn't matter. Flow rate matters. If it was working before it's a good bet that your flow rate through the system is just fine.

Rev. Larry


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mikeandgerry
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Post Wed. Sep. 25, 2013 2:27 pm

I have a vertical pipe mounted Spirovent. It's just configured with a lateral arm to mount in a vertical pipe stack. The lateral arm of it is only about 5-6" long.

Dave 1234
Member
Posts: 190
Joined: Tue. Nov. 13, 2012 9:05 am
Stoker Coal Boiler: 1948 International boiler, EFM S-20 stoker
Coal Size/Type: Buck,
Stove/Furnace Make: EFM
Stove/Furnace Model: 520

Post Fri. Sep. 27, 2013 4:41 pm

Thanks for the advice and in-put. :) Looks like this will be an easy swap.

Dave

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