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Steam problem

Twon1977 Member Posts: 1
These are pics of a recent boiler install by a co worker. I do not have pics of original boiler as I did not install this boiler. I am no expert on steam but I do find it interesting and want to learn. This was oil to gas. Radiators were measured for cfs so boiler is correct size or close to it. After install it's been a nightmare. Hammer, noises and cold rooms. Pressure is at 1 psi. Differential at 1. There was injtially 2 risers off header but water hammer was so bad. My co worker wound up making 1 riser and for some reason it worked better so this is how it's been. You can see the plugged tee on header. This is dry return with highest point being farthest away from boiler and condensate draining back from both sides. Pics aren't perfect but I'm hoping there's a obvious problem to somebody.


  • Steamhead
    Steamhead Member Posts: 16,840
    edited March 2014
    The problem is the piping

    it's not high enough to separate the steam from any water trying to leave the boiler along with the steam. Also, each steam main needs its own takeoff from the header.

    That looks like a small Peerless boiler. Here's one we installed- see the difference?
    All Steamed Up, Inc.
    Towson, MD, USA
    Steam, Vapor & Hot-Water Heating Specialists
    Oil & Gas Burner Service
    STEAM DOCTOR Member Posts: 1,971

    Header seems to be low. Its a drop header so maybe there is some leeway. Initially, there was steam approaching the main takeoff from two direction. After the elimination of one of the boiler risers, there is steam approaching only from one direction. That might explain why the banging has gone away.
    STEAM DOCTOR Member Posts: 1,971

    Was that plugged T connected to the boiler or to the steam main. If the latter, then you can disregard my analysis.

    Time for sleep.