OK, so the new toilet arrived in one piece and the old Dometic/Sealand VacuFlush toilet and lines have been removed.
Sorry we missed pics of the removal. That was the ugly part as the original sanitary hose from the old toilet to the vacuum tank (part of the vacuflush system) went from the vanity area under the shower stall emerging in the forward holy place where you can almost reach.
And of course it wouldn't budge. This was after trying to release it from the vacuum tank as it, the hose, was secured with 5200. OMG, only way the get it out was to cut/saw the tube. Mind you the toilet and hose were still full of "product", so cutting the hose was met with a fair amount of trepidation. OK, a fear of a face wash!?
From the previous blog post here's the vacuum tank showing the remains of the black sanitation hose connected to the tank with 5200.
Well the cutting had no fluids or even drips because it was totally blocked with calcified material hard as a rock. Prodding it with a long thin stick opened up a 3/4 inch opening for all the fluid to drain out. As I said the hose would not budge so in came a come-along winch ratcheting it and stretching it 6 inches before it let go with a snap, which then separated it from the new hose attached to pull thru the confined area.
Almost able to reach where the hose comes forward under the shower stall
View of the holy place from the master stateroom and some of the pieces needed for the project with Rick in his "pretzel" mode!
With the old hose out a new hole in the boat was needed to fish in the new hose. This was in a void behind the shower stall seat and revealed where the old hose has been secured with a heavy tie strap. Maybe good idea for install but horrible for replacement. But hey, it lasted 28 years!
New hose above my head in pic
Note the coupling to connect the new flex hose with the PVC piping. This let me make the barbed hose connection where I could reach it while then using the threaded connection to mate the lines. Thinking better for replacement as needed. The dark marks on the hull are where the old vacuum tank was installed behind the water maker pump and filters (removed to get access for this project).
Hoses and some wiring under the vanity
Hose and new water line under platform on which the toilet sits to make the plumbing connection. The fitting at hose end connects at the back of the new toilet
So with the new hose installed and connected to a new hard PVC line to the holding tank, the toilet install fun was ready to begin.
Here she sits on her side to pre-wire the electrical in the back and prep the plumbing connections
Now, how to set the toilet and make the connection in the back. How about a mirror and flashlight and nut driver to tighten the hoses in place.
and ready for service !
This is a Dometic model MF 8120 vitreous china electric macerator toilet with specifications saying it will deliver the "product" some 98 feet horizontally. Our holding tank is 15 feet away on a level run so thinking the product should easily make it to the tank.
To answer an anticipated question; why not keep the vacuflush system with the new sanitary hose installation? Well first it's a 1994 system making it 28 years old and second, kept in service by numerous replacement parts and repair work over the years. And third, the needed replacement parts now needed added up to nearly half the new toilet cost with fewer parts and a straight line to the holding tank. Kind of a no-brainer for us. And it is amazingly quieter. Now lets hope for trouble free service.
Now to re-install all the items and wiring removed to make the install possible. Picture from last post with the water maker pump and filter
Oh, one last note on this install. The vent for the holding tank was a 3/4 inch; line that goes through a charcoal filter and then exists the boat through a hull vent connection restricting the air flow to a 3/8 inch fitting. That never made sense to me, so while working on this project installed a 1 inch line venting to the exterior through a 1 inch through hull fitting and then covered with a Vetus UFO deck vent as shown below.
This will help in the pump out and proper venting / air flow from the holding tank.
Not exactly what I was thinking of for a boat project but it goes with the territory. Nice job MacGyver!
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