One aspect of RVing that some people just never get used to is the amount of hot water that you have for taking showers washing dishes and so on most RVs have a six gallon hot water tank and a lot have ten gallons some have twelve gallon but no matter what you have you’re going to run out eventually so you know what you know most of the people who like take long showers well especially if your wife has really long thick hair six gallon just doesn’t stretch very much does it go very far so an alternative to having limitations in the hot water is to go with a demand tankless water heater and that’s just like this one right here which is made by gerard now these have been out for quite a few years.
Now the gerard is relatively new to the market this is designed to retrofit to almost any hot water tank that’s design yeah so essentially if you as long as you have propane and water pressure you’re going to have hot water right and probably what’s going to happen is if you’re not hooked up you’re going to run out of water first if you are hooked up hey you just stand into the shower from now until you get sick of being under the shower so bill let’s go and stall us okay don’t want to do it okay bill I guess the first part of this install is to get this puppy out the old one out well get this one out so you turn the gas off I did waters off turn the water off who gets to drain the idea because I’m closer really so means your feet are gonna get wet no yours are because I’m running fast okay go for it okay.
We’re gonna do we’re gonna drain the water out of this thing first then we’re gonna release the gas line and then we’re just gonna just take the screws out in and get this just guy ready for remover alright ok so looks like here ok get it but just I thought you someone in your open a pressure relief out for me and I thought you turn the pump off nice work Billy Joe to you we’re gonna get wet oh we’re gonna release the pressure release of the valve here so yeah as you can see it really won’t even come out of there very well until you open air pressure release valve so your feet getting wet yeah wouldn’t be the first time well it’s gonna take a few minutes before we get started to be moving the rest of it it won’t take long I see let’s see how good you are do you think you can release the gas line while the water’s coming out I think you know what I might be able yeah without getting wet I should have bought my waders this job is actually suitable for do-it-yourselfers but you know it’s good to have a pretty good command of how these things do these the hot water tanks work and you have to take.
You know to take it slow methodically read the directions will 6 gallons on the ground yeah we got more that came from all right listen okay I’m going to take out the 24 screws hold missing in Oh boy thank God for cordless drills our no kid are doing this by hand I think I’d have carpal tunnel before the day is over take the door off of this thing here did I get them all oh it looks like it all right let’s know now the fun part fun part getting this thing to come loose good old putty tape and silicone rubber man they put this thing in with a vengeance well it’s designed to stay there for a while I guess it has to does another do I do that side I can do this on set the suit down just about ready to come out just about okay we got it loose okay now we’ll just have to go inside and it’s connected actually why don’t we pull it it let’s see can we get to the wires first no we can let’s do that it’d be nice yeah okay.
Let your listener get a color coded here in white – white or Lulu yep I think we’re okay I think we are when you do this make sure you turn to switch to the water here off because it is hot so you’ll have a hot a negative if you don’t turn it off until the short blow the fuse I think we hope one other to the relay here that we have two no ice with the water here so water yeah that’s that yellow relay whatever your choice okay so okay we got to go bu we’re done here now we have to go inside pull the lines off the back and pull the gas line loose and it’ll come out of there ma’am fortunately there’s a Lewbert access panel right here in the back of this really makes it easy to get to the back of the water here – but some of these things can really be buried make it miserable to get them out so it looks like we have a gas-electric model here the gas line is already loose I’m gonna get a hold of these water lines get them loose there’s always got to be one stubborn one that’s the rules so we do have an electric line here I’m gonna get it loose if I can get that to stay out of my way now we’re not gonna reuse this electric line because the instantaneous is gas only.
So before I’m done after I pull this up before we finish up I want to tape these up really well make sure they don’t ever have any chance of getting shorted out okay gasps I’m loose water lines loose Bob go ahead and pull it out we’re free okay well we’re not free but we’re cheap okay we’re out when I let the big hole in there yep big hole okay so we’re going to clean up the rest of this thing and then once we get this cleaned up and we’re going to have to go into a structure and what it is is that this this opening here is larger than the size of the of the demand tankless water heater that we’re going to put in here and so therefore we’re going to have to build a frame and really all that amounts to is putting in a vertical piece of wood right here so we’ll have something to attach the new flange to in it really tells you that in instructions where to cut it and you know from what edge and so it’s really not it’s not that difficult.
So what we’re going to do is we’re going to go use a couple of angle brackets and some screws and and a piece of lumber and we’re gonna get to put together in a relatively quick fashion here you got this thing cleaned up yeah okay yep finally all right let’s what do you think look okay you well looks really good okay so what we want to do is we want to go 12 and 3/4 inches from from this edge here to this so right about where it bills at now so he’s going to measure this distance first so we know how much to cut we want 12 12 and 7/8 filmer senator so we’re going to cut this piece of lumber here 12 and 7/8 mat age Lexi looks somewhat score yeah that’s pretty close so you want to hold it over there clear why not 12-12-12 and 7/8 let me use this as a straightedge so one of these days bill we’re gonna buy a straightedge so instead of having to use you know pieces of our are the parts to make lines okay.
We got our slided wood here we go perfect perfect hold that down though just a little bit let’s see if this thing is gonna fit bill perfect fit perfect fit okay okay hold it there hold on let me get let me measure the 12 and 3/4 like they’re calling Horry in the directions so you’re moving off let’s see 12 and 3/4 where is it right about there I’ll just put a mark here good you’re not gonna see that once it goes back together so all we need to do is put these at the 12 and 3/4 mark here will so we’ll nail it it will peel it down probably right in the middle yeah we’ll have to do that we’ll have to measure so we may have to move to move it over a little bit the wood itself will be over a little bit that’s okay no I mean I’ve gotten even of leeway so I’m gonna go ahead and just nail that right there okay yeah that’s perfect no this will work great okay and it’s yeah it’s way solid if you could hold this one in place I’ll see if I get these started in the middle.
I’m gonna see I can can’t see it right here so I actually I’ve been thinking you got it pretty good okay let me no bullshit right straight yeah looks good okay okay good okay let me get in here okay all right now we’re good shape here perfect you got that yeah I do I just have to get my head around the corner okay looks like we have a frame and it’s solid – yeah I know I love it let’s see so we we’re going to utilize the hot wire and a negative wire that are from the existing water now if you don’t have a direct spark ignition model you’re not going to have 12 volts here so you’re going to have to get it somewhere and plumb it in what’s going to happen here is that you have a switch in the tank in the the system itself and so which could which is supposed to come outside turn on off now you can turn on leave it leave it on for the season it doesn’t draw that much but just leave it on hook it up into the same switch that operated the previous hot water tank and then you can turn on and off right from the panel that’s on the wall.