Originally Posted by no roots
Just purchased 2019 Flying Cloud and want to install NH or AH, curious as to how your install went.
Hello no roots,
Yes, there are other threads on composting toilets but I'll try to answer your specific question (something that can be hard to find on this forum sometimes).
We installed a NH. We chose the NH because the fan is mounted on the toilet which we thought would work better for how we wanted to vent, because of the design that I think better separates liquids from solids, and because you don't have to use a "coffee filter" to poop on. Also, the owner (Larry) answers the phone and answers questions (I think I am still waiting on an answer to a question I emailed to AH a long time ago). We decided to have Airstream install it at Jackson Center, which was expensive, but we wanted an elegant installation that looked like it was an original installation. I'm not thrilled with the way they plumbed the vent into the black water tank vent stack and intend to redo that, but otherwise we are happy with the installation. There is no way I could have done the installation myself the way they were able to, since they know how to get into spaces. I'll go into detail below.
As Peter points out, there are a lot of threads on composting toilets and you may want to read through several of them. Many of these threads are full of unwanted opinions, as the idea of these toilets is for some reason threatening to "the old guard". These toilets are definitely not for everyone. It's a question of "how you roll". Look for my posts in this thread:
I specifically discuss who the toilet might not be suitable for. Also look for the posts from TheGreatleys in this thread. In this thread someone was asking about odor and it turned into a "why a composting toilet" discussion. So you may find it interesting. Lots of pro and con.
For our installation, Airstream did the following:
1. Black water tank rinsed clean. It was already pretty clean, as we were constant users of the black water tank flush feature. For our last use of the black water tank we camped at a KOA and used their dump station for an hour flushing and flushing.
2. Water line disconnected, cut somewhere underneath the trailer and capped off.
3. Old toilet removed. Toilet flange removed. Black water tank sealed. Hole for flange covered with sheet metal (that I assume is aluminum, what else would Airstream have?).
4. Power for the vent fan was tapped into the wiring harness beneath the lavatory, using the power line that goes to the Polk Audio unit. Power line for the vent fan was run through the cabinet opening that was used originally for the water line.
5. Toilet mounted at slight angle towards the door. Vent hose runs from the right side of the toilet, around behind the toilet.
6. Opened the black tank vent stack and installed a "T", and connected the vent hose to the pipe. So our toilet vents out this stack to the top of the trailer.
7. Using a Valterra valve mounted to the black/gray water discharge, we have combined our gray and black water tanks, which doubles our gray water capacity.
Hope this helps. Feel free to reply to this or send me a PM if you have any questions.