5 column 5 section Corto with strange steam fill

Daniel_3

Hey guys,

I had to briefly remove this rad for some renovations a while back. It's fed by a 1"inch supply which is no big deal because of it's size and location on the 2nd floor. There is no problem with pitch or hammer or heating before I removed it. Regarding it's supply piping size of 1" before the removal and re-installation unless I had throttled the other rads this one wouldn't heat up fast enough. I am not willing to dig up the floor or the walls to increase to 1 1/4" though. Without opening any plugs just yet the steam fills just the bottom nipples with the middle column. The top nipples don't get hot first and barely at that until the end of the t-stat being satisfied. Steam comes out of the vent when removed. I'm thinking something is blocking the columns at the supply side or some scale is blocking the upper nipples. Whaddya think?

Steamhead (in transit)

Try a slower vent

velocity is probably carrying steam across the bottom of the rad and up to the vent.

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Daniel_3

I'll try that but in the meantime it did solve the problem by throttling some of the rads on the same main nearby.

BTW: remember my old Delco boiler? Well, this thing is crying for me to let her go to a better place. After the lower wet returns started leaking the site glass is now very messed up and the lower nipple to the sight glass is leaking as well. It only drips every few seconds on the returns and the sight glass nipple but the sight glass now gives an improper water level too. At one point during the day the sight glass will show water just about a mm into the glass and then during fire up the site glass will fill completely. I have been monitoring the level as best as I can by waiting for any hammer when it cycles up to cut-out and nothing so far. The LWC is working and it doesn't shut the boiler off when said sight glass at normal will show only a mm of water. I may have to open up the return end and use a dip stick

Steamhead (in transit)

Two words

new boiler!

Two more: Mega-Steam, if it's oil-fired.

Two more: new returns.

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Daniel_3

Those four words were already at the top of my vocabulary usage for the past two months It'll be an Independance, one word making 5.