Freshwater Tank Size

[BradS7535]

I'm looking at a 2006 2720 (two bed model) and the standard option sheet mentions a 20Gal freshwater tank. The TM website lists the 2720 has having a 40Gal freshwater tank.

Can anyone confirm if TM changed the size of the freshwater tank recently, or if possibly the option sheet has a typo and should say 40Gal for a 2006 2720 (Q?

 

[Padgett]

My '06 equipment list says "20 gallon fresh water".

 

[TM Pilot]

20 gal standard

40 gal optional

 

[BradS7535]

20 gal standard

40 gal optional

If this is true, when did it become standard? 40 Gal is the standard now. I'm assuming if it is a 20 Gal, it wouldn't be too difficult to swap in a 40 Gal, probably just expensive to have TM ship a 40Gal tank...

 

[TrailManorMan]

If this is true, when did it become standard? 40 Gal is the standard now. I'm assuming if it is a 20 Gal, it wouldn't be too difficult to swap in a 40 Gal, probably just expensive to have TM ship a 40Gal tank...

My 2720 has the optional 40 gal. 20 was standard in 09'
Looks like the seat frame was installed after the tank and would cause you install
Issues, not prohibitive but more work.

 

[LoveToCamp-TMO]

I believe the 40 gallon tank became standard only within the last couple of years. If I am not mistaken, the 20 gallon tank is located under or near the sink. There is not room there for the 40 gallon tank.

My first 40-gal tank was under a dinette bench, and extended into the rear storage. My current 40 gallon tank is in the back storage area. You would need to find a space, then run water lines, and put the water pump someplace. You may be able to plumb from the new location to the existing pump placement, but I am not sure if that is feasible. Guess it wouldn't matter, though. You have to run the water to that point to tie-in to the existing plumbing.

Not an impossible job, but running a water line after the unit was built will be a bit of a challenge.

Good luck!

 

[inghamm]

2720 with 40 gal fresh tank

We have the original paperwork on our 2007 2720 (we are the 3rd owner) It says 40 gallon tank under "options installed by manufacturer" Our fresh tank is under the dinette seat on the left side.

 

[BradS7535]

The dealer just took a picture of the water tank, and it is located under the left dinette seat as well (not under/near the sink). It definitely looks like a 20 Gal tank though, can anyone post a photo of their 40Gal under the seat? I wonder if the pump/plumbing is different between the two, or if it is just the tank size.

 

[TrailManorMan]

No pics available soon, that is a twenty, the pump, hoses and wiring on a forty are on the left side near the kitchen area, , looks like to get a forty in there you would need to relocate all plumbing, pump and wiring.
My unit is in storage until next week but I am sure of the above information.

 

[Shrimpburrito]

Brad - if you zoom in on that picture, it looks like the dimensions are marked on the sticker as 17 x 22 x 13. That's 4862 cubic inches, which equates to 21 gallons, and probably 20 usable gallons.

Dave

 

[Kidkraz]

Here's pictures of my 40 gallon tank. I highlighted the makes on the size of the water tank for easy reading.

 

[BradS7535]

Here's pictures of my 40 gallon tank. I highlighted the makes on the size of the water tank for easy reading.

Thanks for the photos. Interesting that the inlet for the 20 vs the 40 is different, you would think from a standardization point of view they would keep the inlet/pump/plumbing locations the same and just swap out the tank. Maybe that's what they do now, but from an engineering/cost standpoint, the more standard you can make something, the cheaper it is.

 

[TrailManorMan]

Keep in mind if you decide to change to a forty, the tongue weight with full tank increases by a bunch, all is forward the axle. 160 lbs. extra?

 

[BaconLover]

The guy that had special ordered our 2922KB had asked for a 20 gallon freshwater tank. When we bought it (the original orderer ended up not taking delivery of it), we asked Custom RV to put back the original 40 gallon, and I think it was pretty straight forward. You can see some of my early posts where I was having a little difficulty getting water in the freshwater tank without it spilling out of the opening. I don’t know if that’s because of the swap out, but otherwise, it’s been fine (I figured out a way to sort of close off the opening while filling to fix that leaking problem). Ours was in the dinette seat too like the pictures are showing.

 

[Wavery]

Looks like 17x22x23 to me. That would be 37G

 

[Shane826]

Thanks for the photos. Interesting that the inlet for the 20 vs the 40 is different, you would think from a standardization point of view they would keep the inlet/pump/plumbing locations the same and just swap out the tank. Maybe that's what they do now, but from an engineering/cost standpoint, the more standard you can make something, the cheaper it is.

The bigger tank goes under a couch on the QB/KB models and the smaller tank usually winds up inside a cabinet in the kitchen on the slide models since there can’t be anything in that space where the slide comes in. But yeah I bet if they could standardize the inlet, they would.

If I ever figure out how to convert my 3326 from KS to KB I’ve thought about adding the 40 gallon tank and piggybacking it with the 20 gallon tank that’s already there for some serious capacity.

 

[Wavery]

The bigger tank goes under a couch on the QB/KB models and the smaller tank usually winds up inside a cabinet in the kitchen on the slide models since there can’t be anything in that space where the slide comes in. But yeah I bet if they could standardize the inlet, they would.

If I ever figure out how to convert my 3326 from KS to KB I’ve thought about adding the 40 gallon tank and piggybacking it with the 20 gallon tank that’s already there for some serious capacity.

You would need a bigger grey tank then. Where does it end?

 

[Shane826]

Ha! I had that thought too. That’s where a bigger toter comes into play… Right now I just have the über-basic Thetford 12 gallon toter that’s just big enough to empty the SeaLand toilet.