In my previous house I also had a Miele CSO XXL installed under the counter in my island. It was next to the sink in my island so I could have the water/drain for the CSO connected easily.

For the new house I installed the CSO a bit higher off the floor with a Miele coffee machine above. CSO placement was based on how high the coffee machine could be for comfortable use.

Not sure where you are getting this 30" measurement from?

Is this the spec that you are referring to?

No minimum distance from floor appears to be specified:

• Fisher Paykel OS30NPX1 30" Electric Single Wall Steam Oven with Convection
• Fisher Paykel OM30NPX1 30" Electric Single Wall Speed Oven with Convection

@User - yes, thats the spec I am looking at.

That sheet says "More installation drawings are available on the Miele website" and I just looked and they are there and show other options! Looks like someone edited the main user manual and removed a whole bunch of pages.

Thanks everyone. I called the appliance dealer as well to check on this. He mentioned that there is no reason why it should be installed 36" above the floor. In fact the CSO is installed at a lower height at his showroom. I have asked him to check with Miele and confirm... Hopefully this is just a documentation error.

I just heard back from the appliance dealer - Miele says a plumbed model cannot be installed below 36” due to the drain and water connection. It will not pass inspection if installed below 36". (I forgot to mention earlier, I have the plumbed version of the CSO. I am guessing the 36" requirement is because of the pluming code.

I am torn between my two options:

• Forget about the inspection and stack the speed oven above the CSO ( though i may regret it later). I am going to check with my plumber if he is aware of this code.
• Install the speed oven below the CSO. This is not my favorite setup - speed oven is going to be my primary over/microwave and I am going to have to bend down every time i put or take out food from the oven.

Which one would you pick.. any advice would be helpful.

Thanks for the quick reply @User. This make so much sense now.

If only the dealers knew these nuances with the appliance they sell....I wouldn't have to deal with these curve balls at the last minute.

The plumbed Miele CSO in my previous house was installed under the counter and connected to the water and drain of the sink to the right of it. Never had a problem and everything worked as designed.

Mine passed inspection and that was in Los Angeles county where they regularly create codes for problems that do not exist!

My new plumbed CSO in FL is 17.5" off the floor and again, no issues in the 10 months we have been using it. This time we accessed the plumbing/drain from the sink in the laundry room on the other side of the kitchen wall. Also passed code here.

Thanks @chispa. Its reassuring to know that you installed it under counter and havent had issues with it. The plumbing for my installation will go in the slab (eeeeksss). I will talk to the plumber and see if he would recommend against it.

> You cannot install the plumbed one below counter as it does not have a drain pump to pump excess water. It relies on gravity flow.

I'm 100% certain you can install below counter top if the drain line goes into a basement or other room below the kitchen, and the drain hose and "air gap" is connected below the floor and not to a kitchen sink's drain pipes. I've seen it done multiple times and passed code inspections with no issues whatsoever. Of course it depends on local codes.

IMO some of the Miele Plumbed CSO install drawings are not 100% inclusive of all the possibilities. Look at the installation specifications, not the drawings because the drawings may not cover all possibilities. And on top of this the drawings vary by model-series, e.g., the 6000 (a few years old now) vs the (now current) 7000 series.

One point I see consistent in Miele specs always (always = in every CSO model I've looked at) is a 19-11/16 inch maximum elevation difference between the bottom of a kitchen sink trap ( also called a sewer gas trap or an "S" trap). If you were to position a plumbed CSO below counter top in many cases you could not satisfy this 19-11/16 in limit (because you'd need more than 19 11/16 in. to connect into the sink drain pipe). However if you were to run the CST drain hose through the floor and into an indirect drain in a basement, (example, drain ends with an air gap into a utility sink/tub) you will have meet this requirement.

Suggest you get a competent plumber involved, he/she will have no trouble figuring this out from Miele's specs and local codes in a few minutes.

S Shr you mentioned asking the appliance dealer this question. IMO and IME this is not a good source, the dealers are not licensed plumbers nor are they very knowledgeable with plumbing codes (there are rare, very rare, exceptions). Do you think the dealer will be present when you have plumbing code inspections done? No, for anyone who has any doubt. Show the specs to a plumber, or better yet, point him to the miele website and give him the model number, and ask him your question.