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boiler swap

drjohn
drjohn Member Posts: 1
replacing a 1,000,000 btu boiler with 3 wall hung units.The old boiler has only 1 isolation valve on the return line but none on the supply.Any tricks on getting a new isolation valve on the supply with out draining or freezing the 2'' black iron pipe



John

Comments

  • KevinCorr
    KevinCorr Member Posts: 106
    edited January 2010
    test water

    Have you tested the water in the system? Maybe you want to change it. You can use a simple ph strip. If you are in a freezing area you may want to put antifreeze in anyway. New water can't hurt in a one time change.
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