2 More Steamers Retired To Scrap

JUGHNE

Our small 1975 hospital had 2 Kewanee steamers. Steel fire tube design.
80 HP...2650 MBtuh each.
They were alternated weekly.

The building was heated thru a steam/glycol heat exchanger.

Hot water was from a 300 gallon tank heated by steam insert coil.

The only steam that left the boiler room was for humidifiers.

Both had been rebuilt over the years. Finally one was deemed non repairable.

So enter the engineers. They specked 2 Lochinvar FBN 1751 water (glycol) boilers to replace the steamers. That is two 1,750,000 Btuh input for replacing a single steamer of 2,650,000 Btuh input. That is a total of 3,500,000 for what was now a lightly loaded steamer.

Added a SS tube steam Bryan steam boiler for humidifiers.

Now the ME was advised in advance that the 300 gallon WH tank had been replaced by 2 HTP SS water heaters, so that load was discontinued.

Also that one steamer could heat that 300 gallons plus another complete attached existing building about the size of existing hospital.

So, I was told the single running Loch hit a high of 56% firing over this winter.
The return water is 160 degrees....not contusive to condensing.
It might idle on a 50 degree day at 3% firing.

The MC cannot get the second Loch to fire and not lock out.
Many fingers have been in it, including the Lochinvar rep for start up.
The hospital is wisely holding out on $25K in final payment.
(you don't see that on the wall very often?)

As an old, now dead man, told me years ago........
"The local yocal does not know anything....the 200 mile away ME knows what you need. "

Initially I did not understand what he meant, but this statement has been confirmed many times over the last 40 years.

I just want to report that oversizing is still alive and well.

mattmia2

Did any of these people read the manual and make sure they were set up to lead/follow and the appropriate communications cabling was in place?

EBEBRATT-Ed

ENGINEERS

get paid by the % of the job. They don't care if it is oversized, they want to build for any conceivable catastrophe.

The mor $$$$$$$$ the job the more they make.