Indicators on hvac system working principle You Should Know
WG means Drinking water Gauge. WG is part with the measurement unit for that strain of supporter and pump. IN.WG which means inch drinking water gauge would be the Imperial unit for stress. Such as, ducts are Commonly designed with 0.one in.wg of stress loss for every a hundred ft of duct length.IU means Induction Device. IU is a secondary air cond