To get email notification when someone adds to a thread you're following, click on the star in the thread's header and it will turn yellow; click again to turn it off. To edit your profile, click on the gear.
The Wall has a powerful search engine that will go all the way back to 2002. Use "quotation marks" around multiple-word searches. RIGHT-CLICK on the results and choose Open Link In New Window so you'll be able to get back to your results. Happy searching!
In fairness to all, we don't discuss pricing on the Wall. Thanks for your cooperation.
Creeping pressure on boiler
Hi fellow contractors! I've been at his p&h business over 30 yrs. Got a Vaillant 80% eff. 25yr. old boiler driving me crazy. New #30 amtrol exp. tank and new pressure reducing valve still get pressure creeping up to relief valve leakage. Boiler sounds a bit limed up when it gets to temp. about 170-180. Exp. tank hooked to bottom of air scoop and has clear passage thru. I even put an additional #30 tank on return side off boiler drain just to try SOMETHING. Worked for 2 wks. got a call again relief leaking. House is only 1600sqft. ranch. Also has 40 gal indirect fired water heater. What am I missing here? Is it the liming up? Even with 2 tanks? I appreciate anyones input.