Air must be purged out of the pilot tubing to ensure proper functioning. Here is a step-by-step guide on how to do it:
* Locate the bleed valve and open it.
* Connect an air hose from a pressurized air source to the bleed valve.
* Open the pressurized air source and allow compressed air into the pilot tubing until all water is pushed out.
* Close both valves when complete, checking for any leaks in between steps. Purging the pilot tubing with compressed air ensures that no moisture remains inside, preventing malfunctioning or corrosion damage caused by water vapor buildup over time due to condensation effects.