low water cutoff installation?

louie_2

steam boiler,approx 60 yrs old,coal was the medium back then but was since converted to oil.it has no low water cutoff.i want to install electronic probe type with feeder.next to the gauge glass ports,there are two other ports that are plugged.one is next to and slightly lower than the upper port,the other is next to and slightly higher than the lower port.is this the port i would use(lower one)to mount the probe type water cutoff?i would prefer to use the electronic probe rather than the mechanical type feeder.thank you .i see no other place to mount it

Steamhead

Those ports were for \"try cocks\"

which were used to verify the sight glass reading in the old days. Once in a while I still see boilers that have these try-cocks.

I've never heard of putting a probe-type LWCO in a lower try-cock port though. It would probably work, but before installing it I'd check with the boiler manufacturer (if still in business) and the control manufacturer, and also the local Code authority for their input.

If the boiler is that old, I would prefer a float-type cutoff. These were originally designed for use with boilers of this vintage. Plus, I'd want someone visiting the boiler room every week anyway, and a weekly blow-down is a good way to make this happen.

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[Deleted User]

I would think

your best bet is to utilize the existing gage glass ports. 60 years is a lot of time to set the old plugs in place. The McDonnell #67 is made to mount w/ the gage glass on the same openings. It is not electronic, but, w/ regular flushing, should prove satisfactory.

Good luck.