Replacing Pressuretrol and Pressure Gauge

jtonzola

Bob, Thanks. Isn't the bottom vent too low though? And why dial down the vent? Also I do have some others, gorton 4 and 5 available. Would one of these be better?

Abracadabra

jtonzola said:

Bob, Thanks. Isn't the bottom vent too low though? And why dial down the vent? Also I do have some others, gorton 4 and 5 available. Would one of these be better?

No.. the lower one is for a steam vent. The upper one is for a vent to bleed air out of the radiator for a hot water system.

I'd start with the 4 then go to a 5 is you need to.

jtonzola

Thanks

jtonzola

Okay, I know I said I thought the system was cutting out at 1.5 psi however I just realized that it is not cutting out. I have the pressuretrol dialed as low as it will go and the low pressure guage was reading 3psi and the boiler was still burning. This happens when I have to raise the thermometer by 3 or more degrees rather than the system just kicking on when it slips below the desired temp.
I know my pressuretrol is very old. Should I replace the pressuretrol with a new pressuretrol or a vaporstat of just add the vaporstat? Shouldn't the system cut out when the pressure hits a certain psi and am I correct in assuming that the current pressuretrol is not working because the system is not cutting out?

BobC

The pigtail under the pressuretrol might be blocked, remove it and clean out the pigtail. Also mage sure the tiny hole at the base of the pressuretrol brass base is clear.

Bob

jtonzola

I replaced the pigtail with a new one. Under the pigtail is the low water cut off bulb which may need to be cleaned out. So it may not be the actual pressuretrol? I do notice that when I mistakenly unscrewed the screw on the pressuretrol too much where the spring popped out the system did shut so maybe the pressuretrol is working.

BobC

The LWCO should be cleaned every year, they accumulate crud over time.

Bob

jtonzola

Bob and Abracadabra thanks for your help with the radiator that was not heating all the way through. I closed the top hole and put a gorton 6 on the lower one. It is heating evenly all the way through to end. Good for now. Thanks again.

New England SteamWorks

jtonzola said:

With this one it originally had a hole for a vent up at the top left, which I believe is too high.

Something to think about that this radiator's venting does not match your others. Could this radiator have been an add on or a replacement? In this event one would want to scrutinize the installation as far as pitch, pipe, valve size, take-off, etc. You'd want to rule out an improper installation as the cause. If the installation is fine remove the top vent per Bob. The location of the lower one is low enough. It wouldn't be worth it to drill and tap another opening even lower, IMO.

It is normal that your radiator would heat across the top first (steam is lighter than air), and in theory should only heat all the way across on the coldest days of the year if all is in balance.

jtonzola

Thanks RI SteamWorks. Yes I think you are correct that this radiator was installed later. I am in process of calculating total EDR so I can see how the boiler is sized for the current situation.

jtonzola

Hello BobC. I just posted a new discussion Water level continuing to increase. Can you check it out when you get a minute? Thanks!