Page 322 - HVAC Pump Handbook

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Basics of Pump Application for HVAC Systems

Basics of Pump Application for HVAC Systems 319

Figure 10.23 Use of control-valve position for differential pressure reset.

All valves 70 percent open: 16 ft
All valves 60 percent open: 14 ft
All valves 50 percent open: 12 ft
3. Return water temperature control. Fortunately, this method of
control is not seen very often. It absolutely will not work! Return

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