Hot Water on Demand not heating up

Hot water on demand system that I just tried to operate, but it did not really heat up. Anyone think of any reason why not? It is a brand new unit.

Mybe you didn't demand it loud enough? I have no clue, but was thinking about buying one of those so i will be

If it's the first time let it run a gallon or so through it and see if it lights. Mine took awile the first time -- don't remember exactly why.

You are talking about a tankless water heater right?

Airborne LT wrote:

Hot water on demand system that I just tried to operate, but it did not really heat up. Anyone think of any reason why not? It is a brand new unit.

Lt , i have a friend that had one of those systems.
and to be honist. he never could get it to work right...

Chris, is it the Coleman one? If so on mine once it starts clicking I turn it QUICKLY to the hottest setting and it always lights that way.

He's talking about one of these. I'm guessing for his enclosed/toy hauler. I have one and it works well.

Coleman Hot Water on Demand

http://www.cabelas.com/cabelas/en/templates/links/link.jsp;jsessionid=JNK5WCU1THGFTLAQBBISCOFMCAEFEIWE?id=0024908516349a&type=product&cmCat=froogle&cm_ven=data_feed&cm_cat=froogle&cm_pla=0470303&cm_ite=0024908516349a&_requestid=65743

I have one as well, and never had a problem with it. For the problem is the battery charged? May not light if battery not charged. Something simple that may be overlooked.

yep thats the one I have, one other thing is if it is plugged in it wont work. You have to run it off the battery.

I think the battery was too low to light the propane. After I charged it, it heated the water almost instantaneously. Very hot water too! I am impressed. I got my water tank in today, and I got the closet for the tank and heater almost done. I just need to build the door. I wish I were a better carpenter.

lets see some pics!

Well, I will try and get some pics tomorrow. I had a holy hell of a time this evening and I was just not satisfied at all with the way the door was looking so I took it down. I am going back to the drawing board. I am headed to Lowes in the morning to see about some supports for my shelves, and also wanting to look at water hose and fittings. The water tank has 4 fittings, 3 of which are the same, 1 which is bigger. I am sure they are standard type sizes, but the HWOD system (the end where the pump screws into the collapsible water jug) has a very large size, and I am wondering if I can find somethig to match up to it. My plan is this.........water tank down low (due to the heavy weight), flow thru a pump and up to the HWOD, then out to the shower head. I have it all figured out except for the link between the water pump and the HWOD. I am fairly confident I can get the rest of it worked out.

Question..........all over the box and in the owners manual it says not to use inside a camper. WTF? I use my Black Cat heater and it runs of the same fuel. You think they just put that on there from a liability standpoint?

I bet that black cat says not to use indoors too. Its a CYA warning. If you were to leave it in there a long time it could put out a lot of carbon dioxide. No more than you will be using it you will be fine. I have one in mine. I also have a CO2/smoke detector LOL.

Your water takes fittings are standard. The large one is the water input, the one on the same side is for a vent line (think about a gas can without a vent, doesn't flow well) the other two are for the pick up to a water pump and the last is a drain. I think the smaller fittings are 3/8. Take one of the caps that came with it to the store with you to make sure. I ended up using a 12 volt water pump from an RV to transfer my water from the take to the sink and to the Coleman. I didn't want to cut a larger hole in the tank for the pickup to fit.

Exactly. I plan on using a 12v water pump and a cheaper car battery. Do you need to groud the wiring from the battery to the pump or just hook it direct. I am thinking of some sort of switch, but I am really unclear of how it will all work out. I am really green when it comes to this sort of stuff.

You can use the negative on the battery but you really should wire a switch and a fuse inline with it. The pump will have a red and black wire, you COULD just wire them straight but then it would be on all the time. The switch will allow you to easily cut the pump off/on and the fuse will just protect the pump.

I ended up plumbing a spigot into mine (like what a garden hose hooks to) the Coleman has an input for a garden hose, connect a short run of hose from the spigot to the Coleman and its that simple. Plus it gives you a quick and easy disconnect for winterizing and just in case you need to remove the water heater quickly.

Got any pics of your setup?

no but I may be able to get a few tomorrow, I will try.

Here are a few pics of the trailer and the water closet.

coming together. Now looking for something to pull the beast.

Here you go Chris, if you aren't hooking up a sink or a street fill you can just delete those connections and go straight from the pump the the spigot.




Oh and here is how I did my 12 volt, my 110 is in the gray panel to the right.

Good Pics Daryl. I gotta pay more attention to your Toyhauler -- you really have done it right! I like the spigot inside.

Exactly! I just need to figure out the fittings and all. I plan on possibly trying to tackle it next weekend. I have the water tank, just need to order a pump.

where did you get that shower pan? I have only been able to find them at HD and Lowes for $100ish. Did you find a deal or was that what you ended up going with?

The shower pan cost me 69.00 plus shipping off ebay. I think total it was like 82.00.