Reply
 
Thread Tools Search this Thread Display Modes
 
Old 11-17-2011, 06:36 PM   #1
Full Timers/Diesel power.
 
Mike Leary's Avatar
 
1983 31' Airstream310
Cactus Hug , Arizona
Join Date: Mar 2007
Posts: 2,540
Images: 11
Atwood W/H

The pressure-relief valve on ours is deciding to open up after 15 minutes. Draining and "snapping" the valve shut works for a few days, but if we space the 15 minutes, it will spew again. New PRV, or do I have other issues?
__________________

__________________
"A settled wisdom, plus the itch to be elsewhere"
Mike Leary is offline   Reply With Quote
Old 11-17-2011, 07:04 PM   #2
Rivet Master
 
Ganglin's Avatar
 
1971 27' Overlander
Central , Ohio
Join Date: Jun 2006
Posts: 2,365
Images: 13
Is it spewing water or just weeping? Have you followed this procedure:

PRESSURE-TEMPERATURE RELIEF VALVE
Weeping or dripping of a pressure-temperature relief valve while the water heater is running DOES NOT mean it is
defective. This is normal expansion of water as it is heated in the closed water system of a recreation vehicle. The
Atwood water heater tank is designed with an internal air gap at the top of the tank to reduce the possibility of weeping
and dripping. In time, the expanding water will absorb this air. To replace the air follow these steps:
Step 1:
Turn off water heater

Step 2:
Turn off incoming water supply

Step 3:
Open the closest hot water faucet in the coach

Step 4
: Pull handle of pressure-temperature relief valve straight out and allow water to flow until it stops.

Step 5: Allow pressure-temperature relief valve to snap shut, turn on water supply and close faucet
__________________

__________________
Ganglin is offline   Reply With Quote
Old 11-17-2011, 07:13 PM   #3
Full Timers/Diesel power.
 
Mike Leary's Avatar
 
1983 31' Airstream310
Cactus Hug , Arizona
Join Date: Mar 2007
Posts: 2,540
Images: 11
Quote:
Originally Posted by Ganglin View Post
Is it spewing water or just weeping? Have you followed this procedure:

PRESSURE-TEMPERATURE RELIEF VALVE
Weeping or dripping of a pressure-temperature relief valve while the water heater is running DOES NOT mean it is
defective. This is normal expansion of water as it is heated in the closed water system of a recreation vehicle. The
Atwood water heater tank is designed with an internal air gap at the top of the tank to reduce the possibility of weeping
and dripping. In time, the expanding water will absorb this air. To replace the air follow these steps:
Step 1:
Turn off water heater

Step 2:
Turn off incoming water supply

Step 3:
Open the closest hot water faucet in the coach

Step 4
: Pull handle of pressure-temperature relief valve straight out and allow water to flow until it stops.

Step 5: Allow pressure-temperature relief valve to snap shut, turn on water supply and close faucet
Good info, I thought I'd tried that, but will try the method again tomorrow if I can get a hose hooked up to the PRV to drain it, which has been a beer can until now.
__________________
"A settled wisdom, plus the itch to be elsewhere"
Mike Leary is offline   Reply With Quote
Old 11-23-2011, 01:12 PM   #4
Full Timers/Diesel power.
 
Mike Leary's Avatar
 
1983 31' Airstream310
Cactus Hug , Arizona
Join Date: Mar 2007
Posts: 2,540
Images: 11
I'm going to take a chance and order a fresh PTRV from Watts, it still opens up after 30 minutes, after following the Atwood instructions. Beats driving all the way to Oasis in Tucson from Ajo.
__________________
"A settled wisdom, plus the itch to be elsewhere"
Mike Leary is offline   Reply With Quote
Old 11-23-2011, 03:09 PM   #5
Rivet Master
 
Silver Otter's Avatar

 
2011 31' Classic
Nellysford , Virginia
Join Date: Mar 2011
Posts: 979
Images: 6
Blog Entries: 1
Mike,
We had exactly the same problem this Spring. Replaced the valve and all is well.
__________________
Greg and Linda Heuer
2011 31' Classic Ltd. - The Silver Otter III
2013 GMC Denali 2500HD 6.6 DuraMax
TAC VA-18 | WBAC 1927 - Shen. Valley Unit 149 | AIR 53869
https://www.linkedin.com/in/gheuer
Silver Otter is offline   Reply With Quote
Old 11-23-2011, 06:06 PM   #6
Rivet Master
 
Silver Goose's Avatar
 
2008 27' Classic FB
Burkburnett , Texas
Join Date: Jul 2010
Posts: 955
I think the spring in that valve weakens over the years with the hot cold cycles of the water heater. They typically start to weep and they progressive get worse. Replacing it should give you some more years out of the water heater.
__________________
AIR 47751
Air Safe Hitch, Reese Dual Cam 800#, Centramatics
Silver Goose is offline   Reply With Quote
Old 11-23-2011, 08:40 PM   #7
Full Timers/Diesel power.
 
Mike Leary's Avatar
 
1983 31' Airstream310
Cactus Hug , Arizona
Join Date: Mar 2007
Posts: 2,540
Images: 11
Found one on-line, will let you all know. Thanks for the help. m
__________________
"A settled wisdom, plus the itch to be elsewhere"
Mike Leary is offline   Reply With Quote
Old 11-25-2011, 08:07 PM   #8
Rivet Master
 
crazeevw's Avatar

 
1989 34.5' Airstream 345
Saint Petersburg , Florida
Join Date: Apr 2010
Posts: 1,687
Images: 28
Does anyone have the auto-light feature on their hot water heater? Ran mine for the first time a few weeks ago, and it seemed that the water never really got that hot, tepid at best. Thinking I'm pulling drain plug and give the system a good flushing out.
__________________
crazeevw is offline   Reply With Quote
Old 11-28-2011, 04:22 PM   #9
Full Timers/Diesel power.
 
Mike Leary's Avatar
 
1983 31' Airstream310
Cactus Hug , Arizona
Join Date: Mar 2007
Posts: 2,540
Images: 11
Quote:
Originally Posted by crazeevw View Post
Does anyone have the auto-light feature on their hot water heater? Ran mine for the first time a few weeks ago, and it seemed that the water never really got that hot, tepid at best. Thinking I'm pulling drain plug and give the system a good flushing out.
Do it, mine was pretty grunged up, even though we are carefull where we take on potable. Hope yours is easier to drain than mine.
__________________
"A settled wisdom, plus the itch to be elsewhere"
Mike Leary is offline   Reply With Quote
Old 11-28-2011, 07:10 PM   #10
Rivet Master
 
crazeevw's Avatar

 
1989 34.5' Airstream 345
Saint Petersburg , Florida
Join Date: Apr 2010
Posts: 1,687
Images: 28
Looked at drain plug on mine, it's behind all sorts of fun stuff. Gotta get it cleaned out, so I guess I figure out how to get it removed. Buddy of mine had some sort of attachment to a water hose to push inside of water heater. Guess another item to purchase for the Airstream.
Thanks, Derek
__________________
crazeevw is offline   Reply With Quote
Old 11-29-2011, 09:19 AM   #11
Full Timers/Diesel power.
 
Mike Leary's Avatar
 
1983 31' Airstream310
Cactus Hug , Arizona
Join Date: Mar 2007
Posts: 2,540
Images: 11
My neighbor has the same attachment on his coach that hooks to a hose, it's brass with a little tiny ball valve. He got it at Wallmart. I've got a gas line blocking the drain, so I'm going to have figure out some sort of an offset to get it in, because the pvc plug is one huge pain.
__________________
"A settled wisdom, plus the itch to be elsewhere"
Mike Leary is offline   Reply With Quote
Old 11-29-2011, 10:20 PM   #12
Rivet Master
 
crazeevw's Avatar

 
1989 34.5' Airstream 345
Saint Petersburg , Florida
Join Date: Apr 2010
Posts: 1,687
Images: 28
I just ordered a plastic flush tube on Ebay. Your drain plug set-up sounds just like mine. Guess an offset wrench is in order.
Thanks, Derek
__________________
crazeevw is offline   Reply With Quote
Old 12-03-2011, 12:25 PM   #13
Full Timers/Diesel power.
 
Mike Leary's Avatar
 
1983 31' Airstream310
Cactus Hug , Arizona
Join Date: Mar 2007
Posts: 2,540
Images: 11
Good news: the Watts pressure relief valve arrived and my spew problem is over. Bad news: the PRV I removed (installed in 03) was trashed with skunge; my fault for not paying attention to draining the system and excersising the PRV more often. Here's my neighbor's set-up, I'll have to find an offset to clear the gas line in ours. I'm thinking about doing the PRV with the same kind of hose attachment, as the PRV has internal 1/2" threads.
Attached Thumbnails
Click image for larger version

Name:	DSCN1408hwh.jpg
Views:	63
Size:	160.6 KB
ID:	146414  
__________________
"A settled wisdom, plus the itch to be elsewhere"
Mike Leary is offline   Reply With Quote
Old 12-03-2011, 03:53 PM   #14
Rivet Master
 
Silver Goose's Avatar
 
2008 27' Classic FB
Burkburnett , Texas
Join Date: Jul 2010
Posts: 955
Quote:
Originally Posted by crazeevw
Looked at drain plug on mine, it's behind all sorts of fun stuff. Gotta get it cleaned out, so I guess I figure out how to get it removed. Buddy of mine had some sort of attachment to a water hose to push inside of water heater. Guess another item to purchase for the Airstream.
Thanks, Derek
I hear some saying they use a socket to remove the drain plug. Mine may be similar to yours. It is directly behind the copper gas line. I can loosen it from above with an open end wrench, then with thumb over the gas line and forefinger below I can finish unscrewing it. Have to remember to turn the WH off a day before!

I have one of these wands and it manages to get past the copper line and into the tank. Most RV supply stores have them and they are available online. Always amazed how much sediment comes out every year when I drain and flush it with this. The stream is pretty strong and by angling it down and around is stirs up the stuff off the bottom and most finds it way out.
Attached Images
 
__________________

__________________
AIR 47751
Air Safe Hitch, Reese Dual Cam 800#, Centramatics
Silver Goose is offline   Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Adding Electric Heater to Atwood ElliotA Water Heaters, Filters & Pumps 4 05-19-2013 02:53 AM
New atwood gas/absorption fridge lewster Commercial Listings 17 02-25-2012 08:59 AM
Atwood water heater burnt wire richinny Water Heaters, Filters & Pumps 5 06-21-2011 08:27 AM
new atwood 7900-11 furnace help hgut Furnaces, Heaters, Fireplaces & Air Conditioning 0 06-10-2011 06:09 PM
Sealing around atwood water heater Hueytownalss Water Heaters, Filters & Pumps 1 06-02-2011 11:07 AM


Virginia Campgrounds

Reviews provided by




Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 01:03 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.

Airstream is a registered trademark of Airstream Inc. All rights reserved. Airstream trademark used under license to Social Knowledge LLC.