Well, I am also a bad boy who didnt take pictures!!
I wanted to share some things I learned on my 35U installation.
Before I get started, you should get a Technical service bulletin with you unit telling you about some things to be aware of. Such as mounting to close to a metal panel or bracket and how you should use masking tape to temporarily place the sensor until you make sure that is the right location. If you dont get a tech bulleting, print one from their site.
You want to read that whole bulletin and understand it!!!!
The readings that I will be giving are with the coach about as perfectly level as you could get it.
First of all, I installed the inside monitor in the wall just below the One Place management panel. I did not cover up the old monitoring unit but did disconnect it in the back and used the existing wiring. I also installed an outside monitor in the water/sewer bay by cutting out a hole in the metal panel right above the outside shower on/off valves.
The fresh tank on my rig has the drain valve on the side of the tank. I found that the water pump will stop pumping when the water level is just below the top part of that drain valve. Therefore I did not want the sensor to be mounted below that drain valve. Otherwise, the sensor would think there was water there when the pump would start sucking air. So I mounted it with the top about 1/4" from the top and the bottom was about level with the top part of the drain valve tubing. The bottom of the sensor sort of lines up with where the old 1/3 indicator was. So that shows how accurate that old unit was!!
I actually have about 7 gallons of usuable water in the tank after the monitor says I have zero. So that is a nice cushion. It will read 100% when you could probably add about 4-7 more gallons before it would start out the over flow.I mounted the sensor about 2-3"'s from the drain valve so that I would be away from the tank mounting bracket and the drain valve as much as possible per the tech bulletin.
I mounted the black tank sensor to the left of the existing sensors inside the sewer/water bay behind that metal panel that holds the shower and fresh fill valve. This one had to be mounted closer to 1/8 from the top rather than their recommended 1/4-3/4" inorder to get the longest sensor possible and keep it from wrapping around the bottom of the tank where it curves under. It first reads 10% when you have about 4 gallons in it and reads 80 percent when you have 31 gallons in there. I did not go up to 100% but presume it should be about the 37 gallon mark on a 40 gallon tank.
The grey tank was another matter. I originally mounted it where the existing sensors are on the passenger side sort of above and in front of the rear wheels. That tank is a slopped tank. it is 6" high on that side and close to 7 1/2-8" on the drivers side. By mounting it on the shallow side, it did not read water until it was probably 14 gallons full. This is on a 54 gallon tank. Then for some reason, after it reached 50% full, it shortly showed full when I still had about 15-16 gallons of usuable space left. We think part of this problem was a faulty sensor which they replaced free.
This is one section of that tech bulletin that is incorrect. It states that you should put the sensor on the shallow side of a slopped tank if possible. I talked to Corrie at Garnet and he said it should be the deep end if possible without getting near any metal strapping etc.
So I decided I wanted to be able to see the level sooner than having 14 gallons already in it. I moved the living slide out and back in the right hand corner of the chassis frame, there are two removable panels each having about 12 screws. One sits along the frame rail and the other adjoing one is 90 degrees to it in front of the rear wheels. I removed the one that runs along the frame rail entirely. The one in front of the wheel well was hard to remove on the reight side of that panel due to caulking etc. So I removed all the screws and pulled the left side of it back out of the way. the panel is a thin metal and will bend back. I held it back with some string so that I wouldnt bend it back too far. The tank at that location has a section about 6" long that forms an "L" in the tank. On the other side of that "L" is where the drain pipe comes out. I placed the sensor on the "L" facing me. You have to be
VERY carefull that where you mount it is at least 2-3" from any metal brackets
INCLUDING that removable panel. Othersie you will get a false reading. So tape it one and check you readings, then close up that panel temporarily to make sure the readings, including empty readings, is correct. Then stick the sensor on.
The readins showed 25% with 13 gallons of water on a 54 gallon tank and 100% at 48 gallons.
So I am happy with all that.
I hope you can follow all this!!
Mike
. I'm glad you found this site and find useful topics on it.
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