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Old 07-20-2015, 08:09 PM   #1
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Greyhawk Water Connections

I find my Jayco Owners manual pretty useless..Pathetic is more correct....the two water fills on the side of my 2015 Greyhawk are identical...I use the lower connection for filling tanks...etc...so what is the identical fill connector directly above this one for ?...a tag above says something about tank flushing...
thanks for any advice..
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Old 07-20-2015, 09:33 PM   #2
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Should be blackwater rinse. Don't know why they put it so close and above the fresh water intake.
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Old 07-20-2015, 09:38 PM   #3
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The city water and black flush are arranged like that on our 5th in the water control cabinet. A little further apart but black on top.
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Old 07-20-2015, 11:19 PM   #4
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Black Water

Hey Steve,

I am also in a 2015 Greyhawk. My set up is opposite yours, City water on top but otherwise I suspect is the same. As you noted one is the City water connection used for supplying water, filling a holding tank or winterizing the water lines.

The second will be your black water scrub, not to be misinterpretted as "sanitzation" which is actually cleaning your water lines. The second nozzle is connected directly to your Black tank and a series of sprayers inside the tank which clean out any debris left after draining the tank.

To use the black water scrub, ensure you have a seperate hose to ensure no possibility of contaminating your water lines. I recommend using a different colour hose then your water line to ensure no mistakes are made. Ensure your black water valve is open and connected to a sewer outlet and then run the water. You will be able to hear the spray nozzels flapping around inside the tank. You do not need to do this every time you drain the tank but considering what you are dealing with... more is always better then less.
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Old 07-20-2015, 11:55 PM   #5
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15 Greyhawk here too. I still haven't figured out why they would put the tank flush above your freshwater source......
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Old 07-20-2015, 11:56 PM   #6
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thanks ...the top tag says make sure the full way evacuation valve is open....is that the dump valve I suppose....?
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Old 07-21-2015, 12:01 AM   #7
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Quote:
Originally Posted by StevWb View Post
thanks ...the top tag says make sure the full way evacuation valve is open....is that the dump valve I suppose....?
Yep. Thier name is far more sophisticated then mine... A Class buses probably have an even prettier name for the old Poop Chute!
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