Fresh water tanks

[vmtz93]

Sorry if this is a repetitive question. We just bought a used 2018 momentum 349M and a few of my gauges aren’t working on the one control system. Black tank shows 100% full and gray tanks showing 33%. My fresh water isn’t showing anything but when I first filled up the tank with fresh water it didn’t show anything until the next morning it was showing 66%. Not sure how the tanks work if there is just one fresh water tank or two tanks. I went to fill it up today and the over fill tube in the back water was coming out of that one but not the one in front. Any help with any of these issues I talked about would be greatly appreciated.

[livinthelife]

Sorry if this is a repetitive question. We just bought a used 2018 momentum 349M and a few of my gauges aren’t working on the one control system. Black tank shows 100% full and gray tanks showing 33%. My fresh water isn’t showing anything but when I first filled up the tank with fresh water it didn’t show anything until the next morning it was showing 66%. Not sure how the tanks work if there is just one fresh water tank or two tanks. I went to fill it up today and the over fill tube in the back water was coming out of that one but not the one in front. Any help with any of these issues I talked about would be greatly appreciated.

I can't address whether there's one or two fresh water tanks, but I can tell you that the sensors/monitors on tanks a notoriously inaccurate. After a while you'll learn how much/how full your tanks are. I believe there are typically one fresh, two grey, and one black tank on most rigs.

[John612]

Bit of a scare with our fresh water tank. At a full hookup site, came back to the rig after being gone all day and water was coming out of the fresh water overflow.
Turned out when I switched the Kant leak valve to city fixtures, I didn't exactly center it, so it diverted water into the fresh tank.
Zip tied a spare hose to the fresh dump valve and drained it.

Am I correct that the grey & black water tanks have no over flow valve, the blue and red low point drain lines are fresh water only?

Thanks,

John

[Dan the man]

Yes, that is correct John.

[offtohavasu]

Bit of a scare with our fresh water tank. At a full hookup site, came back to the rig after being gone all day and water was coming out of the fresh water overflow.
Turned out when I switched the Kant leak valve to city fixtures, I didn't exactly center it, so it diverted water into the fresh tank.
Zip tied a spare hose to the fresh dump valve and drained it.

Am I correct that the grey & black water tanks have no over flow valve, the blue and red low point drain lines are fresh water only?

Thanks,

John

The black and grey will vent through roof.

[John612]

Curtis - Fumes vent through the roof, but not fluids, correct?

[FT4NOW]

Curtis - Fumes vent through the roof, but not fluids, correct?

If you overfill the gray tank it will just back up the sink or shower and fill that. If you overfill the black tank, it will back up to the toilet and give you a surprise when you flush next or if that doesnt happen it can eventually fill up the vent line and out the top. That's also assuming the vent pipe is secured well to the tank and it doesnt start leaking at that connection and then spilling into the underbelly.

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