02/26/2026
π€Purging the heat exchanger on a 5 ton natural gas RTU. It is so imperative to purge the heat exchanger of any residual oil from the factory so it does not go into the space and set of the fire alarms π¨ .
We jumped out the controls circuit at the roof to fire up the unit for the first time. Look at how much smoke comes off the HX! π