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Old 02-20-2016, 08:37 AM   #1
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Filling water tank

We recently purchased a new 29IK Silverback. I have read all the books they give me, and there is a lack of info on the Campers systems. I just signed up for this forum and this is the first of many questions. My first question is when filling the fresh water tank, there is a hard connection where you screw your hose on. Is there a overflow (vent) somewhere when the tank is full? Nothing to open or close before or after filling?

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Old 02-20-2016, 08:47 AM   #2
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We have a different model. There are two (2) water connections. The screw on one is for the city water and on our model this does not fill the fresh water tank. Our's has a second fill location for the fresh water tank, and it is not screw on. Our's does have an overflow. To use the water in the fresh water tank there is a 12v pump that you need to turn on, that's it. The pump will turn on briefly to pump water and pressurize the system, and then whenever water is used.

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Old 02-20-2016, 08:54 AM   #3
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Not the same unit.
The water hose connects to the left side for city water and tank fill, is yours like this?

I must set the two valves to the system I wish to use.

There should be a tube under your SB that does not have a cap or a valve on it, that should be the over flow.
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Old 02-20-2016, 08:59 AM   #4
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every camper I have owned had a overflow
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Old 02-20-2016, 09:08 AM   #5
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Welcome to the forum. You may want to post your question under the thread for 5th wheels. You will get more replys to any questions you may have. Enjoy Later RJD
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Old 02-20-2016, 09:08 AM   #6
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Yea should be a city water connection that you use when hooked to water at the site. The other is used when dry camping to fill the fresh water holding tank when camping without hookups or as we call(dry camping) then you have to use the water pump so it will pump water from tank to faucets, toilet and shower area. Our water tank fill just has a cap to take off and you use a hose to fill but I'm sure the newer ones might have a screw on to fill unless the second is a black tank flush system. Then you would have the cap outside near the rear of camper to fill fresh water tank.
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Old 02-20-2016, 10:05 AM   #7
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I've attached a PDF of typical plumbing systems. They have evolved over the last few years. The as-shown system is how they were for many years, with a screw-in hose connections for city water and a flip open funnel-like connection for the fresh water tank fill. Then they added a screw-in connection for the anti-freeze fill line. In this case, you had a valve in each feed line to the pump, one in the antifreeze line and one in the FW tank line. Using these, you could actually fill the FW tank with the city water hose attached to the antifreeze fill connection. However, in the upper left is the next evolution (brown ovals), which was to eliminate the two suction valves and replace them with a 3-way valve. This typically prevents you from filling the FW tank from the antifreeze connection. The 2nd evolution is shown in the lower right (purple ovals). They've added another 3-way valve in the city water line that goes to the FW tank and they've eliminated the flip open FW tank fill. Some people are concerned that someone will pour something nasty down the flip-open fill, so this arrangement eliminates that concern. This arrangement seems to be prevalent on new 5'vers, based on my forum browsing, anyway. Your plumbing may be any combination of these arrangements.

Also pay attention to the 3 valves at the water heater. Many folks forget to close the bypass valve. This causes them to get about a minutes worth of hot water, then it turns cold.

Hopes this helps.
Attached Files
File Type: pdf RV Plumbing pic.pdf (117.9 KB, 24 views)

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