Razzler wrote:Oddsneds4u Where dose this line go to? Is this a feed to one of your zones? If so I haven't seen it done like that before.
You had the gate valve turned off and the presure still went up?ODDSNENDS4U wrote:That is a cold water line to feed the boiler
ODDSNENDS4U wrote:Question on this valve. Should this be turned on or off and what is it for?
Razzler wrote:You had the gate valve turned off and the presure still went up? ?ODDSNENDS4U wrote:That is a cold water line to feed the boiler
whistlenut wrote:I have never installed the pressure tank in a horizontal plane like yours is. I've done then hanging and upside down only. I've had remote floor mounted units for large systems, but never the way yours is. I'm not saying it is wrong, just looking over the layout. Many of the old style galvie tanks up in the floor joists were horizontal, but they never had a bladder inside them.
I've never seen a well Xtrol tank in a horizontal configuration either. Let's see what others notice, but that one slaps me up side the noggin' immediately. If all else fails, do you have access to any C-4? That could permanently resolve this dilema. Just kidding, you are very near a solution. The damned trouble all started when you called it a furnace!! It's a Hex on a fine BOILER!
e.alleg wrote:OK it seems you need to do some tests to find your problem. I guarantee you will find it in less than 3 days. Here we go: Step 1: Shut off your boiler and let it cool. Step 2: drain off any excess water/pressure until your gauge reads 12 psi at 120 degrees. Step 3: leave the domestic water coil and the boiler feed lines open like normal and keep the boiler TURNED OFF. Step 4: Check the pressure in 24 hours.
Diagnosis: If your pressure rises then you have a problem with excess water getting into your boiler.
Diagnosis #2: If your pressure remains the same your fill valve and HW coil are good, you have an expansion tank issue.
Shortcuts will lead to confusion so I would just live without your EFM for a day or so and find the trouble. It's easy to restart.