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P906C 

Proportional 

Differential Pressure Controllers

 

 

PRODUCT DATA 

 
 

FEATURES 

 

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Proportional control 

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4 – 20 mA current output 

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Control range: 0 – 70 psi (0 – 483 kPa) 

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Adjustable throttling range

 

 
 
 
 
 
 
 

 
 

APPLICATION 

 
The P906C differential pressure controller 
provides proportional control to maintain 
the desired pressure difference between 
two points in a water system. It is suitable 
for use with modulating control valves to 
regulate the by-pass differential pressure of 
water chillers. 
 
 
 
 

Summary of Contents for P906C

Page 1: ...ge 0 70 psi 0 483 kPa Adjustable throttling range APPLICATION The P906C differential pressure controller provides proportional control to maintain the desired pressure difference between two points in a water system It is suitable for use with modulating control valves to regulate the by pass differential pressure of water chillers ...

Page 2: ...e product to make sure the product is suitable for your application 3 Installer must be a trained experienced service technician 4 After installation is complete check out product operation as provided in these instructions IMPORTANT All wiring must agree with applicable codes ordinances and regulations CAUTION Electrical Shock or Equipment Hazard Can shock individuals or short equipment circuitry...

Page 3: ...crew counterclockwise until the scale indicators reach the low minimum end of the scale Fig 5 4 Turn the throttling range adjustment screw until the throttling range indicator is midway between C and D on the throttling scale plate NOTE Do not go beyond the point at which the linkage begins to show slack 5 Apply typical operating pressures in sequence to the left and right elements high and low pr...

Page 4: ...ng in system Fig 5 Internal View of the P906C Differential Pressure Controller Honeywell Limited 25 F Honeywell Tower Olympia Plaza 255 King s Road North Point Hong Kong 0804 Pressure Difference Adjustment Screw Throttling Range Adjustment Screw Throttling Range Scale Plate Pressure Difference Scale Plate mA Output Terminals Power Supply Terminals Right Element Assembly Low Pressure Side Left Elem...

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