HVAC Abbreviations - archtoolbox.com
www.archtoolbox.com › representation › abbreviationsSep 05, 2019 · Mechanical: MIN: Minimum: MU: Make-Up Water: MUA: Make-Up Air: NC: Noise Criteria or Normally Closed: NO: Normally Open: NOM: Nominal: OA: Outside Air: OAI: Outside Air Intake: OC: On Center: OD: Outside Diameter: ODP: Open Drip Proof: OV: Outlet Velocity: PCF: Pounds per Cubic Foot: PD: Pressure Drop: PH: Phase: PRV: Pressure Reducing Valve: PSI: Pounds per Square Inch: PSIA: Pounds per Square Inch - Absolute: PSID