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04-19-2017, 08:10 PM
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#1
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Senior Member
Join Date: Aug 2015
Location: Cincinnati
Posts: 229
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Seneca HJ water tank support
Is the support for the fresh water tank adequate? Mind seem to be sitting on some styrofoam and "bending" in the middle. Seems pretty 1/2 a$$ed to me.
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Mike
2015 Seneca HJ
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04-19-2017, 09:01 PM
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#2
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Member
Join Date: Mar 2017
Location: NAMPA
Posts: 98
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My 2014 ts had a sagging problem also. The floor it was sitting on was actually touching the Trk frame. I took the tank out and put 3/4 plywood under it. Used 2 pieces for instalation ease. While tank was out I installed a 5/8 fill line directly to top of the tank from wet bay. Now fills much faster. I also installed a vent line in the center of the tank and plugged the original vents.
The floor was still sagging so I put a 2x8 (1 1/2 x 7 1/2) between the frame and floor. I screwed into the side of the 2x8 from inside the compartment to hold in position.
I also cut 2ea 4 inch holes so I could see the water level in FW tank.
Sent from my SCH-I545 using Tapatalk
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04-20-2017, 06:16 AM
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#3
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Senior Member
Join Date: Jul 2015
Location: Southern Illinois
Posts: 880
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Great picture of mods for visual inspection of how much water is in your tank. Think we will copy that idea.
We investigated location and found about the same results. Added a couple of pieces of OBS Board to support the full dimensions of the tank. Sloppy installation with failure written in its future, if not addressed and modified.
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Smooth Sailing,
Ric and Jan Golding
Southern Illinois
2016 Jayco Seneca 37FS
2016 Chevrolet Traverse
2018 Cheverolet Silverado
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04-20-2017, 08:23 AM
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#4
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Senior Member
Join Date: Jan 2017
Location: Manchester Center
Posts: 1,519
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Looking at these it appears that the bottom of the tank is exposed. How are these tanks heated as they are claimed to be ?
Sent from my iPhone using Tapatalk
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Paul
2018 37TS
Jeep JL
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04-20-2017, 09:35 AM
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#5
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Senior Member
Join Date: Dec 2014
Location: Akron
Posts: 3,191
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Quote:
Originally Posted by RVermont
Looking at these it appears that the bottom of the tank is exposed. How are these tanks heated as they are claimed to be ?
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The gray ribbed material you are seeing is not the tank, it is the compartment the tank is housed in. The compartment has heat ducted into it from the furnace.
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Rob R.
Akron, OH
2014 Seneca 37TS
Toads: 2019 Ford Edge ST or 2013 Ford Focus ST
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04-20-2017, 09:41 AM
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#6
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Senior Member
Join Date: Jan 2017
Location: Manchester Center
Posts: 1,519
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Great. Thanks. I don't have my rig yet so I am living through all of you for the next couple of months.
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Paul
2018 37TS
Jeep JL
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04-20-2017, 10:07 AM
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#7
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Senior Member
Join Date: Dec 2014
Location: Akron
Posts: 3,191
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I completely understand and I'm happy to help!
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Rob R.
Akron, OH
2014 Seneca 37TS
Toads: 2019 Ford Edge ST or 2013 Ford Focus ST
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04-20-2017, 10:49 AM
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#8
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Senior Member
Join Date: Aug 2015
Location: Apple Valley
Posts: 317
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I cit a slot to view the water tank in my 37TS
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Mnwelsh
Apple Valley MN
2015 Seneca TS, 2019 Seneca TS
Previous RVs: 3 truck campers and 2 fifth wheels
Love the Seneca. Toad 2018 Ford F-150
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04-22-2017, 09:38 PM
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#9
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Member
Join Date: Jul 2016
Location: Percy
Posts: 31
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Mine was sagging bad so I installed 1"X1" square tubes on the bottom side of the sagging plastic compartment. As you can see there is enough room for the square tubes to rest on the channels on each end. I also tac welded each end to secure them from moving or falling out. Simple fix.
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04-22-2017, 09:45 PM
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#10
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Member
Join Date: Jul 2016
Location: Percy
Posts: 31
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I also removed the gray cover hiding the water level on the outside of water tank accessible from the outside door. I removed the gray cover and used it as a pattern to cut out a plexiglas cover. Now I can see exactly how much water I have in the tank. When filling the tank up for dry camping I am able to completely fill the tank no having to rely on what the inside indicators say. Why Jayco can't figure out these simple things I have no idea. J Byrd
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04-26-2017, 10:11 AM
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#11
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Senior Member
Join Date: Apr 2017
Location: Treasure Coast Florida
Posts: 643
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I'm new to the Seneca (pick it up next week). Two questions: Are those panels you all are cutting holes through part of a ventilation barrier to keep furnace heat in so the tank doesn't freeze when camping in freezing weather? Second, where is the drain valve for the fresh water tank? That valve was well hidden on my previous motorhome.
Thanks.
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Rick with Lori and Two Pekes
'16 Jayco Seneca HJ Topaz
'13 Mini Cooper toad : Blackhawk All-Terrain tether
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04-26-2017, 12:54 PM
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#12
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Senior Member
Join Date: Dec 2014
Location: Akron
Posts: 3,191
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Quote:
Originally Posted by Crossingover
I'm new to the Seneca (pick it up next week). Two questions: Are those panels you all are cutting holes through part of a ventilation barrier to keep furnace heat in so the tank doesn't freeze when camping in freezing weather? Second, where is the drain valve for the fresh water tank? That valve was well hidden on my previous motorhome.
Thanks.
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As far as the panel, it does not completely enclose my tank. In the passenger side compartment 2nd from the back, the panel only blocks the top half. If you get down and then peer upwards in that compartment behind the panel you can see the end of the water tank. Does the panel serve to help keep the heat on top (warm air rises)? It might, but not to a great extent IMHO.
My TS water tank drain valve is accessible in that same passenger side compartment on the tank fill/drain line. There is one pipe that comes into the bottom (passenger) side of my water tank, through that line the tank either fills or is sent to the water pump depending on the settings of the valves. Right near where that line enters my tank there is a "tee" and a drain valve with a nipple leading down so it can drain underneath. The valve handle itself is all that is visible inside that compartment and very easy to miss if you are unfamiliar. It is labeled "low point drain" on mine, but even the label is hard to find unless you are looking.
By the way it takes forever to empty the tank via that drain if you have any quantity of water in the tank, if memory serves it is just a 1/2" PEX line. To speed things up I leave the drain closed so the pump can draw water from the tank and open the other drains which are on the pressure side of the water system. Then when the pump sucks air I open that valve to let the rest passively drain. But if time is no concern it will eventually empty just by opening the valve.
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Rob R.
Akron, OH
2014 Seneca 37TS
Toads: 2019 Ford Edge ST or 2013 Ford Focus ST
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04-26-2017, 01:53 PM
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#13
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Senior Member
Join Date: Apr 2016
Location: sherwood park
Posts: 235
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I like this
Quote:
Originally Posted by byrdbody
Attachment 30719 Mine was sagging bad so I installed 1"X1" square tubes on the bottom side of the sagging plastic compartment. As you can see there is enough room for the square tubes to rest on the channels on each end. I also tac welded each end to secure them from moving or falling out. Simple fix.
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So how hard was it to install these tubes ? as I like the stability of welded support
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04-26-2017, 02:03 PM
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#14
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Member
Join Date: Mar 2017
Location: NAMPA
Posts: 98
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Worked on trucks for many years and welding on frame flange was a no-no. As a frame flexed (it will) a Crack will start next to a weld. Small tacks behind rear axle probably not too bad.
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04-26-2017, 02:32 PM
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#15
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Senior Member
Join Date: Apr 2016
Location: sherwood park
Posts: 235
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I would probably weld a strap across all them right next to frame rail on each side to keep them from walking and keep the frame untouched
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04-26-2017, 04:21 PM
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#16
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Member
Join Date: Jul 2016
Location: Percy
Posts: 31
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I cut them longer than just catching the distance from frame to frame. I welded the ends the full inch width of the square tubes. These units are not usually driven day and night like over the road truck so I doubt very much any cracks could every derive from any such welding. I will keep my eye on them as time goes by just to make sure nothing changes.
Bottom line is I don't need my fresh water tank getting a hernia.
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04-26-2017, 05:20 PM
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#17
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Senior Member
Join Date: Jul 2015
Location: Southern Illinois
Posts: 880
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I supported mine with 4 ft x 8 ft sheet of OSB Board cut to allow it to fit in the compartment. It really wasn't very difficult to install with an empty tank. I forget the dimensions I had the OSB cut to, but I wrote it up on this site back when I did it, if you want to search.
The carpet cover board you mentioned has nothing to do with insulation or warmth. Its just cosmetic. On the 37FS, there is a low point drain on each side and marked.
As far as filling, I've connected all 3 of the overflow vents together and ran to the driver's side with a valve right by the fill point. When water runs out there, we are full. It takes on a whole lot of water after the 4 lights are lit.
__________________
Smooth Sailing,
Ric and Jan Golding
Southern Illinois
2016 Jayco Seneca 37FS
2016 Chevrolet Traverse
2018 Cheverolet Silverado
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04-27-2017, 06:29 AM
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#18
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Senior Member
Join Date: Apr 2017
Location: Treasure Coast Florida
Posts: 643
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Quote:
Originally Posted by Robbbyr
By the way it takes forever to empty the tank via that drain
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Previous MH had a fat drain line with big plastic ball valve so I could drain 75 gallons in no time. I like to travel with full freshwater but also drain and refill periodically to keep it 'fresh' with periodic bleach additions in between.
Thanks for the detailed descriptions.
__________________
Rick with Lori and Two Pekes
'16 Jayco Seneca HJ Topaz
'13 Mini Cooper toad : Blackhawk All-Terrain tether
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04-28-2017, 08:20 AM
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#19
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Senior Member
Join Date: Apr 2016
Location: sherwood park
Posts: 235
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Hope to get unit out of storage this weekend, will look at this area. As I installed a 50 gallon water tank in this area??? and then fitted it up to the floor may have taken care of the floor sag issue? Will have to put my boro scope up there and see if I may have fixed this issue. Unless the 37rb model postions their tanks in a different area.
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04-29-2017, 06:58 PM
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#20
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Senior Member
Join Date: Nov 2015
Location: Canon City
Posts: 230
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I have yet to find that hose from the furnace that's supposed to heat the tanks. That's a large area for one hose to heat. I'm more worried about the water and sewer valves in the back compartment! I put a small elect. heater in there when temps drop below 32 degrees. I've checked that compartment with the furnace running and it's the same as ambient!
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Buddy Brown
2016 Seneca HJ
2004 Wrangler
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