| OT: Water in underground LP supply line [message #237658] |
Mon, 27 January 2014 16:44  |
rcjordan
Messages: 1913
Registered: October 2012
Location: Elizabeth City, North Car...
Karma: 1
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The first time, I thought maybe it was contaminated fuel or perhaps there was the remote chance that I had left the line open long enough for condensation to form. My friend, who co-owns an LP company (he was in charge of installations and repairs. decades of experience) purged the line and commented that "this is weird, I've not seen this much condensation before." Anyway, I put it on the vigilance list. The lines haven't been left open except for a minute while changing tanks and even then I close the ball valve so that just the dual tank manifold is open.
Two years later, I have enough water in the line that during the past deep freezes the line is plugged by ice. When we get a thaw, like today, I can relight the gas logs. Having spent the last hour or so purging the line with an air compressor to get ready for tomorrow's snowstorm, I'm asking gmcnet if anyone else has had similar experience?
Here's my setup:
2 x 40# aluminum tanks on a manual switch-over manifold with a hi-pressure regulator. The 3/8" OD copper line is exposed for 8 feet before it enters a 4" chase pipe. It then travels 75 feet, loops up next to the foundation where a low-pressure regulator is installed, then goes back underground 25 feet before surfacing in the crawl space under the gas logs.
SOLD 77 Royale Coachmen Side Dry Bath
76 Birchaven Coachmen Side Wet Bath
76 Eleganza
Elizabeth City, NC
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| Re: [GMCnet] OT: Water in underground LP supply line [message #237701 is a reply to message #237658] |
Mon, 27 January 2014 19:16  |
Ken Henderson
Messages: 8726
Registered: March 2004
Location: Americus, GA
Karma: 9
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Senior Member |
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I thought there was a requirement for even our ASME tanks to be purged
periodically, even though I've never done it. But the only reference I
find is for purging of new tanks. That procedure is outlined on page 10 of
this handbook -- you may need to follow that procedure:
http://www.bergquistinc.com/sites/default/files/academy_guides/Handbook.pdf
Ken H.
On Mon, Jan 27, 2014 at 5:44 PM, RC Jordan wrote:
>
>
> The first time, I thought maybe it was contaminated fuel or perhaps there
> was the remote chance that I had left the line open long enough for
> condensation to form. My friend, who co-owns an LP company (he was in
> charge of installations and repairs. decades of experience) purged the line
> and commented that "this is weird, I've not seen this much condensation
> before." Anyway, I put it on the vigilance list. The lines haven't been
> left open except for a minute while changing tanks and even then I close
> the ball valve so that just the dual tank manifold is open.
>
> Two years later, I have enough water in the line that during the past deep
> freezes the line is plugged by ice. When we get a thaw, like today, I can
> relight the gas logs. Having spent the last hour or so purging the line
> with an air compressor to get ready for tomorrow's snowstorm, I'm asking
> gmcnet if anyone else has had similar experience?
>
> Here's my setup:
> 2 x 40# aluminum tanks on a manual switch-over manifold with a hi-pressure
> regulator. The 3/8" OD copper line is exposed for 8 feet before it enters
> a 4" chase pipe. It then travels 75 feet, loops up next to the foundation
> where a low-pressure regulator is installed, then goes back underground 25
> feet before surfacing in the crawl space under the gas logs.
> --
>
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Ken Henderson
Americus, GA
www.gmcwipersetc.com
Large Wiring Diagrams
76 X-Birchaven
76 X-Palm Beach
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