5. Unscrew and retain the valve caps from the air-purging valve and from the
drain valve.
6. Remove the extension hose from the air-purging tool, if it is connected.
7. Place the drain end of the air-purging tool into a container that can hold at
least 11.4 liters (3 gallons) of water.
Air-purging
valve
Drain
valve
Figure 48. Removing the cap from the air-purging valve and drain valve
Hose
Extension hose
Hose
Extension hose
Figure 49. Air-purging tool
58
Rear Door Heat eXchanger V2: Installation and Maintenance Guide
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