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steam boiler losing water - no apparent leaks
I am new to this site but have seen a few older posts on this topic and wanted to glean a little more insight into this problem.
I have a Weil Mclean boiler and every few days, I was putting in about 2 gallons of water.. I eventually put in a VXT automatic feed device to automatically feed the boiler on Low Water Cutoff because when I came home in the winter after a week away the house was cold because the LWCO was on thus shutting the boiler off.
I know that adding water to a boiler is bad but I felt I had no choice. I know that the VXT device is only a band-aid and does not get to the crux of the problem.
So this is what I did.
1) Checked all the returns - all are above ground and no apparent leaks
2) Shut off the boiler and overfilled it so no water line in sight glass. No apparent leaks
3) Checked the chimney exhaust from outside the house while the boiler was on and did not notice any
4) Checked under the radiators - no signs of water
5) Checked the spot where the water returns from the radiator after making steam and no signs of rust or
evaporation leaking .
I have lived in the house for around 20 years and do not have any signs of water leaks on bedroom ceilings or other spaces.
In my poking around, I did notice that the house has 2 mains and both of them are tapped with a 1/8 nipple to accept GORTON D valves which are radiator valves!! WOW. However somehow since we are getting heat I do not think that this has to be resolved immediately?
I would think that this would slow the heat to the radiators of which some also have Gorton D air valves but in the end, we still do have heat...
If I change to putting in a 1/8 to 3/8 coupler and then putting in a 3/8 female elbow and then putting in a Gorton #1
3/8 air eliminator valve, would this help to resolve this water loss problem?
I'm wondering if perhaps steam is too slow to circulate the system and it is somehow boiling some water away causing the water loss?
Any suggestions on this issue would be greatly appreciated..