This is the North Baltimore Mennonite Church, originally Roland Park Methodist.
The building was built in two sections- first the sanctuary, then the fellowship hall and nursery. Originally the system used indirect radiators, but these were replaced with free-standing radiators as they failed. Our first job here, several years ago, was to upgrade the main vents.
It appeared from the piping that there might have been two boilers originally, but what we found was a Burnham V-907 with the usual leaky welded header. The device in the rear is a heat exchanger for a disused hot-water loop:
The church wanted to switch to gas, so we ran a 2-inch gas line last year and waited and waited for BGE to install a larger gas service and meter.
Well, the Burnham started leaking. When considering a replacement, they said they'd love to be able to separate the two parts of the building to avoid heating the sanctuary when it wasn't needed. Sooooooooo.....................
All Steamed Up, Inc.
"Reducing our country's energy consumption, one system at a time"
Steam, Vapor & Hot-Water Heating Specialists
Oil & Gas Burner Service
Baltimore, MD (USA) and consulting anywhere.https://heatinghelp.com/find-a-contractor/detail/all-steamed-up-inc