How hvac system diagram can Save You Time, Stress, and Money.
WG means Water Gauge. WG is an element with the measurement device with the tension of fan and pump. IN.WG which means inch water gauge would be the Imperial unit for pressure. By way of example, ducts are Generally designed with 0.1 in.wg of pressure decline for each 100 ft of duct size.MFD means Motorized Hearth Damper. MFD can be a variety of da