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Gas Valves Burnham Boiler IN12

Lanz
Lanz Member Posts: 3
I have a IN12 burnham steam heating boiler. I noticed that I have 2,  3/4 gas valves, what is the purpose/reasoning behind this ? My old boiler I had just one gas valve, same name and model. 

Comments

  • EBEBRATT-Ed
    EBEBRATT-Ed Member Posts: 13,149
    must be two stage? post some pictures
    Lanz
  • Lanz
    Lanz Member Posts: 3

  • EBEBRATT-Ed
    EBEBRATT-Ed Member Posts: 13,149
    Could be two stage or two valves for higher capacity. You could tell by looking at the wiring and wiring diagram
    Lanz
  • mattmia2
    mattmia2 Member Posts: 7,207
    Could it be something with smooth light off, the valves open at different speeds?
    Lanz
  • ChrisJ
    ChrisJ Member Posts: 13,905
    They have two unions on there.
    "That's ok, the manufacturer put them there making them magically different than if the installer does it".

    Single pipe quasi-vapor system. Typical operating pressure 0.14 - 0.43 oz. EcoSteam ES-20 Advanced Control for Residential Steam boilers. Rectorseal Steamaster water treatment
  • mattmia2
    mattmia2 Member Posts: 7,207
    ChrisJ said:

    They have two unions on there.
    "That's ok, the manufacturer put them there making them magically different than if the installer does it".

    It is a listed assembly.
  • Lanz
    Lanz Member Posts: 3
    Thanks for the help!