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Gas Valves Burnham Boiler IN12

Lanz
Lanz Member Posts: 3
in Gas Heating
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: 16,479
    must be two stage? post some pictures
    Lanz
  • Lanz
    Lanz Member Posts: 3

  • EBEBRATT-Ed
    EBEBRATT-Ed Member Posts: 16,479
    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: 10,933
    Could it be something with smooth light off, the valves open at different speeds?
    Lanz
  • ChrisJ
    ChrisJ Member Posts: 16,316
    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 392sqft system with an EG-40 rated for 325sqft and it's silent and balanced at all times.

  • mattmia2
    mattmia2 Member Posts: 10,933
    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! 

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