The 2-Minute Rule for hvac system design
WG means Drinking water Gauge. WG is part of the measurement unit with the stress of enthusiast and pump. IN.WG which stands for inch water gauge may be the Imperial unit for tension. For instance, ducts are Typically designed with 0.1 in.wg of stress decline for every a hundred ft of duct duration.BDD means Backdraft Damper. BDD is used to be cert