Adding Antifeeze - he-ruide
Go into the PUP, open the access way to the water heater and look for the bypass valve.  Turn it to bypass the heater.  You can purchase or make a bypass kit if needed.  Note the bypass line eliminates filling up an empty heater with Anti-freeze.

Go into the PUP, open the access way to the water heater and look for the bypass valve. Turn it to bypass the heater. You can purchase or make a bypass kit if needed. Note the bypass line eliminates filling up an empty heater with Anti-freeze.

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