5 Simple Statements About hvac system cleaning Explained
CHWR stands for Chilled H2o Return. CHWR is commonly found in the chilled drinking water system structure and schematic drawings. It is also typical to possess the CHWR phrase physically painted to the chilled h2o pipe to point the chilled drinking water flow route from the air managing unit on the chiller.BDD means Backdraft Damper. BDD is utilise