What is the difference between this and a standard Series 16 control

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Compact Footprint: Large capacity flow characteristics in a small frame

always ensure the blower speed taps and jumpers are set to match the specific CFM requirements of the furnace being serviced to prevent premature heat exchanger fatigue

Johnson Controls VG7251NT Valve 322838-752 What is the difference betweenThe Johnson Controls VG7251NT is a heavy duty 1 inch globe valve engineered for precision fluid control in commercial HVAC systems. This 2 way normally open valve features a cast bronze body and brass trim, ensuring reliable performance in hot water, chilled water, or 15 psig saturated steam applications. With an 11. 6 Cv rating and equal percentage flow characteristics, the VG7251NT provides stable modulating control, preventing hunting in high