need ideas for steam to gas hot water heating system using mod-com boiler

fenkel

Hvacnut, id provide a diagram, but this triplex has been hacked by others before this . There's steam pipes in walls, slant fin tubing in a few rooms, cast iron baseboards and cast radiators in this place.. i think the pipe in attic leaks. i saw what appeared to be steam leaking when i stuck my head in to check on the system... the actuators are in the attic as well..
This ones gonna be a challenge..

The owner wants only one heat sourse and each unit as a zone off of that source..

mattmia2

Dividing small steam systems in to multiple zones is very difficult because of the need to match steam production and consumption.

A better idea than trying to zone it per unit would be to put a TRV on each radiator which should be very simple with 2 pipe steam.

Steamhead

fenkel said:

Perry, great idea..but surrounding homes and units have been converted from steam to gas...

Over 1/ 2 of city residents are off the steam line now...

Im.checking into steam boilers now, the first distributor will not carry them, the second said he doesnt carry them,but will check on availability.. both said very small market here..

So up in the air now...

@fenkel , who are your distributors?

fenkel

Owner took a bid to convert to hotwater vs steam...said i was nuts for even mentioning that!!
Lost bid!!!

mattmia2

I would say you can get time and materials to try to get that to work after the other contractor gives up, but you don't want that job.

fenkel

I guess we have to see how bad it is later...