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stal

stal

Joined on November 13, 2011

Last Post on December 1, 2012

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I had

@ December 1, 2012 10:41 AM in Interesting dilema

the same problem when I bought my house a couple years ago.  The first floor convectors are piped via a monoflo system.  I had converted from oil to gas heat and when the plumber replaced the boiler, he didn't notice that there were two sections that was capped.  I happened to notice it while doing some electrical work in the basement.  I shorted out the t's myself with half inch pipe, but to my disappointment  the pipe i had installed remained cold when i turned the boiler on.  I had a hunch that air was trapped in the pipe, so i re-piped it and added a coin vent so I could vent the air out.  That worked and the pipe gets hot when the boiler runs and my boiler does not short cycle like it use to.  If the pipes to the shorted out t's that you installed remain cold when the boiler is on, I suggest you add a coin vent.

Perfect!

@ November 16, 2011 12:32 PM in Connect Monoflo Tees

To confirm, the vent goes on the return side?

Not

@ November 16, 2011 9:33 AM in Connect Monoflo Tees

that I want something to be there, I just want it to be right.

i believe they are

@ November 15, 2011 9:39 PM in Connect Monoflo Tees

they are the same t's that are on each of my radiators.  If there is an air vent at each radiator, then why not at the piped t's?  Isn't the pipe basically a radiator without the the fins?

monoflo's:

@ November 15, 2011 9:36 PM in Connect Monoflo Tees

It did "work" with my old oil fired boiler. I recently replaced the oil fired boiler with a gas fired condensing boiler and the system does "work". The plumber must of not noticed the capped tee's (on the opposite end of the house from the boiler). I understand that not piping the tee's restricts the flow. I was hoping that the system would run even more efficiently than it is now. I believe my boiler short cycles (burner turns off and on every few minutes when t-stat calling for heat) and was hoping to minimize the short cycles by piping the tee's.

Connect Monoflo Tees

@ November 15, 2011 4:59 PM in Connect Monoflo Tees

I had this question originally on the the radiant heat forums but haven't got any replies.  Thought here would get more views.
I have a monoflo system that heats my first floor. I've noticed that a set of tees were capped. I've removed the caps and connected the tees with pipe (i've read that this should be done). I then filled the system back up and purged the radiators. But for some reason, the pipe connecting the tees remains cool when the boiler is running, which tells me that water is not flowing in through newly installed pipe. Do any of you have a solution to this? Should I have added an air valve on the pipe? The water pressure is currently set to 17psi. Should I try increasing the pressure? Any help would be greatly appreciated. Thanks.

Connect tees on Monoflo

@ November 13, 2011 11:13 PM in Connect tees on Monoflo

I have a monoflo system that heats my first floor.  I've noticed that a set of tees were capped.  I've removed the caps and connected the tees with pipe (i've read that this should be done).  I then filled the system back up and purged the radiators.  But for some reason, the pipe connecting the tees remains cool when the boiler is running, which tells me that water is not flowing in through newly installed pipe.  Do any of you have a solution to this?  Should I have added an air valve on the pipe?  The water pressure is currently set to 17psi.  Should I try increasing the pressure?  Any help would be greatly appreciated.  Thanks.