Today billn figured out how to make the dip tube work. Even though Ergomax is the best water heater ever, they are not perfect. Their plan for the dip tube for the user to purchase a double tap bushing and have a straight pipe down to act as the return connection for the heating system (if you don't understand, don't worry). First of all, nobody seems to sell a double tap bushing and secondly, a straight pipe hits the internal coils of the unit. Billn solved this by drilling out the 3/4" sweat by 1" MPT adaptor and sweating a short length of tubing in. To solve the straight shot problem, billn used a short length of PEX with a recycled hunk of male adaptor to act as a weight.
This method threaded into the return tapping and should be just fine. 
Here is the finished (boiler-water only) water heater. Billn still has to connect the domestic hot and cold water lines, but this is good progress. 
Here is the supply manifold. Billn still has to connect all the distribution lines out. A prize goes to the reader who notices the problem with the pressure gages.
The wires will all bundle together into a loom, then will be butt spliced onto longer wires to go to the control panel.
8 comments:
Hello, is the center for inquiry? I would like to inquire about butt splicing? Do you need a medical degree for that?
Just wondering?
No, just a lot of butt. I figure you can help in this part of the project.
quoting Fezzy "Rude, Rude and RUDE"
Kids, play nicely...
Brooklyn Barrister
BB, can you mediate?
problem with the gages? ... well, from a design perspective, they are practical yet not very complimentary of each other. there is not a 'zen' feel about them. that troubles me. other than that - what?
Gage problem = they are just sitting in the bulls of those tees. Look closely, the gages are 1/4" MPT and that tee is 1/2" sweat by 1/2" FPT.
Today I have 1/2" x 1/4" bushings.
No Zen, just it is nice to know the differential pressure across the heating zones.
Prior to purchasing a new hot water heater, be sure your existing space will accommodate outfitting for a larger tank.
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