Water hookup

[GeorgiaBound]

In the water hookup area of my Rushmore RF35RL, I have 3 water hose inlets. The top one says City Water, the middle is not labeled, the bottom says Sani Flush. Anyone have any clue as to the middle hookups, purpose?

[Leroy]

It might be to fill fresh water tank

[gepaine]

I think it is probably for filling your water lines with anti-freeze.

[GeorgiaBound]

Originally Posted by gepaine

I think it is probably for filling your water lines with anti-freeze.

Thank you.

[mark5w]

Originally Posted by gepaine

I think it is probably for filling your water lines with anti-freeze.

Not so sure that's what it's for.


Usually you suck in the antifreeze with your onboard pump.

[Lloyd]

I don't know what it's for, but if I had to guess, I would agree with Leroy. (post#2)


If it was mine, I would hook a water hose onto it and find out where the water went.

[Timberwolf76]

Likely a blackwater tank flush/rinse. Both of my Blackwater tank flush connections are just below the city water hookup.

[gepaine]

Originally Posted by Timberwolf76

Likely a blackwater tank flush/rinse. Both of my Blackwater tank flush connections are just below the city water hookup.

One of the OP's connections is labeled "Sani-Flush" already. Are you suggesting that he has two black tanks or that he has one with 2 flush ports?

Since you seem to have two, how many black tanks do you have?

[Kenny White]

On our 2015 Rushmore Lincoln the top is the city connection, below that is the fresh water fill. At the bottom right corner is the black water flush connection to the right is the antifreeze winterization hose. The water heater bypass valve is just above the black water flush. I can send a picture if needing a reference photo. Kenny White

[Timberwolf76]

I have 2 black tanks.