As I mentioned earlier  there is a rating plate on the  right-hand side of the unit if you’re  ever calling tech services or talking to  anybody from Bosch the first thing that  they’re going to ask for is a model and  serial number that’s located on the  right-hand side of the unit you’ll  notice here on the rating plate it’ll  have your minimum and maximum BTU range  in the upper right hand corner here  you’ll notice an FD number that’s  actually a serial number and you can see  it in fine print right there some of the  newer models don’t have this silver tape  and it’ll just be written out with ink  this particular barcode here is the  serial number as well another thing .

You’ll want to notice if you have any  inspectors who are asking you questions  about certifications those are also  located on this label at the very bottom  any CSA or any other certifications that  they’re looking for will be located on  this rating plate and as I mentioned  before and I can’t stress it enough when  you’re putting on your valve kit the  best thing to use and the only thing  that you should really use is teflon  tape this should go on the bottom  threads and you’ll be able to thread up  the unions on the valve kit itself  straight up to it but once again pipe  dope and sealant not a good idea  whenever you’re doing this it’s a good  idea to go with the actual threading of  the thread itself so put it on to the  right just like you were tightening up a  fitting to it and you won’t rule it out  so I have my valve kit.

I’ve already put  the tape on the bottom of my fittings  and the first thing that you can do with  these most of them do have unions this  particular one is threaded by sweat you  can get them threaded by threaded as  well and all you have to do is break the  union at the top of it take that piece  off and thread it up to the bottom of  the unit itself  pair of channellocks would do just fine  I would suggest Hawley that you don’t  use a large pipe wrench especially when  you’re doing the gas line connection as  this is aluminum.

I’ll just take these  after you’ve connected the two tops of  the unions to the water in and the water  out the next thing that you’re going to  want to do is you’re going to want to  take your gas type teflon tape which is  yellow and you’re also going to want to  get yourself made up a drip leg section  one of the biggest things that I ever  see when I’m out in the field is that  the guys will not install a full port  3/4 ball valve for the gas line now if  you’re using track pipe Ward flex or any  of the other corrugated type stainless  steel gas lines make sure that you use  their rating and their gas sizing  whenever you’re installing one of these  tankless water heaters um but if you’re  using black iron that’s going to be  located in the install guide that came  with the unit that I showed you earlier  so one of the more important things as  well is that you’re going to want to use  a drip leg minimum three inches this  should be made out of black iron and  then you can connect your Ward flex  track pipe or whatever it is that you’re  using up to that particular drip leg  section one of the things.

I would avoid  highly against is using a corrugated CSS  tee unless the actual rating plate is  rated for the maximum BTUs of the  particular unit that you’re actually  installing so this is definitely  critical you’re going to want this 3/4  full port gas valve  whenever you’re installing this so I  will thread these up and as I mentioned  earlier you’ll want the trap to be a  minimum of 3 inches this is what your  drip legs should look like  full port 3/4 inch gas valve in its open  position closed position now let’s put  in the valve kit  pressure relief valve and your blue tape  rather than the gas type and there it is  now in this particular install will be  coming out of the wall and nineteen up  it’s not really a typical install most  of the time you’re either replacing a  forty or fifty gallon water heater if  they have a half-inch line can’t stress  it enough you have to refer to the gas  pipe sizing chart that’s in the manual  but in this particular install we’ll be  coming out of the wall and nine digging  up into our fittings here if you are  replacing a forty or a fifty gallon  water heater you may have to come down  you may have to come over but the  easiest way to do any of the piping on  the water side is to put your gas line  in first.

So we’ll hook up the water  lines now that we’ve got our copper  water lines hooked up to our unit on our  inlet side and our outlet side it’d be a  great idea if you insulated these  particular pipes it definitely helps out  with the efficiency of the system itself  the other thing that we installed was  the pressure relief valve which is going  down to our drain you want to get as  close as possible to it at least within  six inches now that we have the water  lines in the next thing that we  installed was our condensate drain as I  had mentioned before we don’t want to  glue up to that particular fitting on  the outlet of the unit we want a quarter  inch air gap for the condensate line to  drain into as it drains down  and comes across and back we’re going  into a neutralizer this is available at  your wholesaler.

The other thing whenever  you do install this neutralizer you’re  going to want to put a little slope on  it towards the back and then of course  coming out we want to go into a drain by  no means do you ever pipe one of these  things in copper there are no copper  fittings that should be piped to this  out of this whatever it may be no copper  whatsoever  I took the cover off to install the  venting so I wouldn’t scratch the cover  but the venting that we installed was a  twin pipe configuration there are six  different types of venting  configurations that you can run with a  Bosch water heater reviews condensing tankless water heater  exhausting horizontal or vertical using  room air for combustion concentric  horizontal concentric vertical twin pipe  horizontal twin pipe vertical and  outdoor in climates that do not drop  below 32 degrees Fahrenheit single vent  to the outside as possible.