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Hydrocarbon (propane) alarm

Printed From: R-pod Owners Forum
Category: R-pod Discussion Forums
Forum Name: Podmods, Maintenance, Tips and Tricks
Forum Discription: Ask maintenance questions, share your podmods (modifications) and helpful tips
URL: http://www.rpod-owners.com/forum_posts.asp?TID=5313
Printed Date: 14 Jun 2025 at 1:39am
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Topic: Hydrocarbon (propane) alarm
Posted By: Old Dingo&Mrs.Dingo
Subject: Hydrocarbon (propane) alarm
Date Posted: 18 Sep 2014 at 2:31pm
Living here just north of Pittsburgh, in the Allegheny valley, we have observed two mornings, this week, with mid 30 temperatures.  Because of the threat of an early freeze, I decided to winterize my 'pod now.  (I usually try to err on the side of caution.)

  I drained the water lines and all four tanks, blew out the water lines. and pumped antifreeze through the system, to protect both the system itself and the P-traps.  Just as I was finishing wiping up the splashed antifreeze, the propane alarm sounded.  Even after resetting several times, it would not stop until I opened the door, opened the roof vent, and turned on the fan.

The propane tank has been turned off for about 6 six weeks, no candles, torches, or lanterns were burning anywhere inside or outside of the 'pod.  The black tank has been drained and flushed for about six weeks also, so there was little or no methane gas available either.

Could the "fumes" from the Propylene Glycol an ethyl alcohol based antifreeze have triggered the alarm? I never had this problem before, any guesses?    


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Old Dingo and/or Mrs. Dingo
181G
2013 Jeep Grand Cherokee



Replies:
Posted By: Outbound
Date Posted: 18 Sep 2014 at 4:22pm
My dog likes to sit under the table next to the propane detector and occasionally she'll set it off with a stray fart.  But, I've never set off the propane detector with plumbing antifreeze.

However, over the years, I've noticed the occasional post on other forums from others who have wondered the same thing as you.  I think you're likely correct that Propylene Glycol triggered the alarm.


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Craig :: 2009 RP171 towed by a 2017 F150


Posted By: techntrek
Date Posted: 18 Sep 2014 at 8:12pm
I've set mine off after holding the toilet open for a while, usually while filling up the black tank with water so it can be dumped.  Even though yours was "empty" it will still have some residue and fumes.

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Doug ~ '10 171 (2009-2015) ~ 2008 Salem ~ http://www.rpod-owners.com/forum_posts.asp?TID=1723 - Pod instruction manual



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