Pressuretrol

RyKB

Summertime!  Boiler doesn't kick on when water temp gets low resulting me going down and "thumping" the pressuretrol, which almost always stimulates the furnace to start cooking my shower water.  Like otyher neophytes I've read about, I cranked up the pressure cut-in on the pressuretrol, which would also signal the boiler to start burning.  Once I have the adjustment screw up to about 7-8 psi, the furnace kicks on.  I understand that this is wayyyyyy too high, so what else is going on?  Boiler is a Burnham V-74-T, not sue about the age.  Thanks for any help!

Rick

Fizz

Try posting on steam site

Try posting your dilemma on steam site here by clicking on Ask questions, then click on steam section.  You will get your problem solved!

Steamhead

Pigtail is probably rusted shut

have it replaced with a brass one. 

gennady

pressuretroll

are you heating the house in the summer? If you are getting hot water from the coils in the boiler, then you have to have aquastat connected in parallel with thermostat . the pressutroll is break on rise, so it should not affect hot water. Get someone qualified to check your aquastat. and pressuretroll too.

Ban

Electric contact vacuum/pressure gauge

What do you guys think about using something like this: http://www.amazon.com/Amico-Electric-Contact-Pressure--0-1-0-16MPa/dp/B00975P8G0/ref=sr_1_4?s=hi&ie=UTF8&qid=1357582075&sr=1-4&keywords=electric+gauge+vacuum



I plan on running my Dunham system in a vacuum and felt like a device like above would benefit me in a few ways all at the same time without the need of: 1. an expensive pressuretrol, 2. a separate vacuum gauge, 3. a low psi gauge and 4. a vacuum controller for a pump in the future.



What do you think?

Jamie Hall

Let me count the ways...

not rated for steam

pressure range way too high for a Dunham

makes on increase -- would need a relay board

unknown reliabiity

you will still need a reliable low pressure gauge

you will still need a vacuum gauge (that thing doesn't go into a vacuum at all)

for starters...



You need a vapourstat.  Yes they are expensive.  Yes they will last decades.  Do it irght, not cheap -- you'll be much happier

Ban

I understand but,

These gauges state they are used for air, vapor, and liquid. It said if was for -.1mpa to +.15mpa which seems to equate to -14psi to +14psi. It would be nice if there were a device like this which went from -22oz to +22oz, I agree. I was going to use this to be connected to a vacuum pump which would turn on with the burners and off at the desired vacuum index set on the gauge. It's not the expense that bothers me as much as the ability to control the vacuum.