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how to size replacement compression tank

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[Deleted User]
[Deleted User] Posts: 0
in THE MAIN WALL
and replacing with a closed compression tank, how is the new tank sized when system gallons is an unknown?

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  • John@Reliable
    John@Reliable Member Posts: 379
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    GERRY CHECK OUT

    www.amtrol.com makers of the boiler mate and other tanks. They have #15 extrol tanks all the way to floor standing models. I'm sure they can help you size right the first time. Hope this helps.
  • RB_2
    RB_2 Member Posts: 272
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    expansion tank sizing

    You'll need the following information to get a replacement sized:

    1. Relief valve setting (from boiler safety relief)
    2. Fill valve setting (from Press Reg Valve) or static pressure (vertical distance from location of the relief valve and water level (highest point) in the system)
    3. Coldest fill temperature from fill source and maximum operating temperature from high limit setting
    4. Size of existing tank
    5. Fluid type, ie: 100% Water or other mixture. (This is very important if its glycol!)

    If you have difficulty reaching someone to help you size the new tank, let me know.

    RB



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