5 Simple Statements About hvac system diagram Explained
GRD stands for Grille, Sign-up and Diffuser. GRD implies a element is both a grille, a sign-up or even a diffuser. It is just a generic time period used to explain anything that’s provide/return and exhaust/consumption air.MFD stands for Motorized Fire Damper. MFD is a kind of damper that is each motorized and resistant to hearth. It uses an actu