alfredmay wrote:

Clay L wrote:

The following is info from the Atwood service manual on how to properly establish the air pocket.

Step 1: Turn off water heater
Step 2: Turn off incoming water supply
Step 3: Open the closest hot water faucet in the coach
Step 4: Pull handle of pressure-temperature relief valve straight out and allow water to flow until it stops.
Step 5: Allow pressure-temperature relief valve to snap shut, turn on water supply and close faucet.

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This will not work for my water heater. I have a check valve installed by the RV manufactured at the hot water outlet. This was put there to allow water heater bypass for winterization of the RV using RV antifreeze. My bypass utilizes a single shut of valve for the water heater supply, along with the check valve at the water heater hot water outlet.

As I stated before. Inject air by hooking up a hose that is not filled with water....... This works for me.

Clay L wrote:



I also have the single valve winterization system with a check valve on the hot water outlet and the procedure works fine with my water heater.