Quote:
Originally Posted by hamsterpower
From that picture it looks to me that too much teflon tape was used. That may have kept you from threading the fitting on far enough to get a good connection. you only need 2 to 3 wraps of tape.
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That picture (above) showing the top of nipple does look like it has at least 3 turns.
But, it's the bottom of the nipple, where it screws into the tank, that's leaking badly now..
After drying it up, then re-pressurizing it, I could see nothing on the top,
but the cup around the bottom started to fill with water.. In less than an hour.
Looking at the bottom picture,(above) it seems like I may not have used enough tape.?
When I replace the nipple this time, I won't be using any tape..
What happened with the 2-piece Pex-to-iron adapter, seems like un-screwing.
I'm pretty sure vibration from the ASHP is being transmitted into that nipple.
The Hot side nipple isn't clamped with a U-bolt.. No problem there.
So, after the brass is installed, I'm going to try to isolate the brass from the clamp.
Rubber wrap around the brass and a loose U-bolt might do the trick.?.
Or, maybe not. I think there might be a design problem with the A7.
The over-hang might be pulling up (with the U-bolt) with considerable force.
The
cantilever effect plus the vibration works on that cold water nipple. (bottom pic).
Those two rubber feet that sit on the tank-lid have very hard rubber. Like
rock.
Note: Those little rubber buttons on the rails, help installation they aren't part of any shock absorbing scheme.
Maybe there is a way to take some of the up-loading off that nipple..
Like supporting the A7 in the front maybe?
