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boiler swap
![drjohn](https://secure.gravatar.com/avatar/ed9f400290879c5230e2f8ab796204f2/?default=https%3A%2F%2Fvanillicon.com%2Fe771952457a28e25b4e0a1d43c1c48d9_200.png&rating=g&size=200)
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
John
0
Comments
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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.0
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