Jayco RV Owners Forum

Thread Tools Display Modes
Old 11-13-2013, 08:45 AM   #1
Junior Member
Join Date: Nov 2013
Posts: 1
Question Jayfeather Water Heater Bypass


I have a 2008 Jayfeather LGT and am looking for a better way to winterize it. Up to this point I have been using a small air compressor to blow out the water lines but find it very time consuming and I never feel completely comfortable that I've gotten all the water out of the lines. I would like to be able to pump in RV anti-freeze but I'm not familiar with the process of bypassing the water heater. I also do not know if this model is equipped with the bypass valve(s) or even where they are located.
Can anyone provide me with information on:
1. Determining if my Jayfeather has the bypass valve(s) installed and where to find it/them.
2. How do I use the bypass system if it is installed.

Feeling rather stupid not knowing all this but I can't help but feel there's a better way then the way I've been doing it so far!

Thanks in advance for the help.


kmlynch57 is offline   Reply With Quote
Old 11-13-2013, 09:06 AM   #2
Moderator Emeritus
Doug's Avatar
Join Date: Oct 2012
Location: Southwest Ohio
Posts: 4,285
There's a good diagram on this link. You'll see it posted on the forum as reference a lot.


The bypass valve is usually located very close to your HW tank on the inside of your TT.

To pump in anti-freeze, there is usually a clear hose located on one side of your water pump.
Not all TT's come with the hose already installed, but many do.

My pump is located under the kitchen sink, but they can be anywhere. If you have trouble finding it, turn on the pump, open a valve and follow the noise.

Here's a decent video for pumping in the anti-freeze and accessing the bypass valves. May want to fast forward to 2:30.

Best regards,


Southwest, Ohio
2016 Toyota Tundra SR5, 5.7 V8
Doug is offline   Reply With Quote
Old 11-13-2013, 09:11 AM   #3
Senior Member
Join Date: Aug 2013
Location: NC
Posts: 923
You should have three valves, not sure where they are but they will be close to the water heater on the inside of the camper inside of something or under something. Mine are under the sink. All three valves are two position valves (off or ON). All three get changed in position from where they are now. All you need to remember is; if its on turn it off; if its off turn it on. In the summer go back the other way.
No man has a good enough memory to be a successful liar. Abraham Lincoln

2016 36FBTS Pinnacle
2016 F350, 6.7, 4x4, DRW, long bed
B & W Companion 5th wheel Hitch
eldermike is offline   Reply With Quote

Thread Tools
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

» Virginia State Campgrounds

Reviews provided by

Powered by vBadvanced CMPS v3.2.3

All times are GMT -6. The time now is 11:32 PM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2016, vBulletin Solutions, Inc.