Jayco Greyhawk utility center diagram

[bob91750]

Hi all. New 2020 Greyhawk 29mv owner. Been studying about winterizing, plumbing system care, along all the other things one needs to keep up with. Does anyone have a plumbing diagram for this mh? I feel sure I can follow directions but I would really like to see just what valve is doing what when you select the various combinations on the utility center.
I've tried looking on this and other sites, but haven't been able to find anything. Thanks in advance for any info.
Bob

[LI-Camper]

Originally Posted by bob91750

Hi all. New 2020 Greyhawk 29mv owner. Been studying about winterizing, plumbing system care, along all the other things one needs to keep up with. Does anyone have a plumbing diagram for this mh? I feel sure I can follow directions but I would really like to see just what valve is doing what when you select the various combinations on the utility center.

I've tried looking on this and other sites, but haven't been able to find anything. Thanks in advance for any info.

Bob

If you contact Jayco customer service, they will email you a diagram of plumbing, electrical, etc. You need to let them know the Jayco ID which on my Greyhawk is the last 8 characters of my VIN.

[RBeau1954]

I have a 2012 so the numbers might be different but here is what it all means
City Fixtures-when you are hooked up to a water source at the campground you put the valves in the position listed for City Fixtures

City fill-this is what you put it in when you are filling your on board water tank

Country Fill-you would use this if you want to put water in your tank but only have water in a bucket or water container, need to turn on your water pump and hook up a hose to the water in line and have it go into the container and it will pull the water from there into your on board tank

Normal-you use this when you want to use the water from your on board water tank, the pump must be turned on

Sanitize/Winterize Lines-Using the a hose and putting the end in a gallon jug of rv antifreeze and turn on the pump to fill all the lines in the coach with antifreeze, open each fixture until antifreeze comes out.

Sanitize Tank-Use a mild solution of bleach, put the hose in a container and turn on the pump and it will sanitize your system

Each thing above corrisponds to a number setting like 3-5 or 2-6. Remember, which ever switch you use to turn your pump on is the same one you have to shut off, for example, if you turn it on outside at the control center, you cannot turn it off from the bathroom, it can only be turned off where you turned it on. If you turn it on in the bathroom that is where you have to turn it off.

If you have a water filter and it does not have a drain on it you have to remove it and empty the water out.

If you have any more questions, post them here.

[RBeau1954]

If you have an on demand water heater, make sure you put antifreeze in it before you use the bypass. Those small copper lines are very thin and you either need to completely drain it or make sure you get antifreeze in it or you will be spending $500.00 plus installation for a new one. Ask me how I know.

[bob91750]

Just over a year ago, I was wondering how the utility center valves were plumbed and just how each one was doing what it does. With some information from other Jayco owners, I came up with a diagram of how the water is routed to the plumbing system depending on where each valve is set. I've attached that to this post.
The thread
https://www.jaycoowners.com/forums/f...tml#post909713
on jaycoowners.com contains information from some other users that is very clear and concise about what's going on. He also includes some important points about where to set the valves to make sure they are cleared if you are using air pressure to winterize.
Let me know if you have any questions, or see any problems.
Thanks, Bob