Honeywell P906A Pressuretrol Pressure Controller Instructions
- June 13, 2024
- Honeywell
Table of Contents
Honeywell P906A Pressuretrol Pressure Controller
DIFFERENTIAL PRESSURETROL CONTROLLERS
THE P606A AND P906A CONTROLLERS RESPOND TO INCREASES AND DECREASES IN PRESSURE DIFFERENCE BETWEEN HIGH AND LOW SIDE OPERATING PRESSURES IN WATER OR STEAM SYSTEMS. THE P606A PROVIDES 2-POSITION CONTROL IN LINE OR LOW VOLTAGE CIRCUITS. THE P906A PROVIDES PROPORTIONAL CONTROL IN LOW VOLTAGE CIRCUITS AND CAN BE USED TO CONTROL A PROPORTIONAL VALVE TO MAINTAIN DESIRED PRESSURE DIFFERENCE BETWEEN TWO POINTS IN A SYSTEM.
D P606A provides 2-position control through spat contacts.
- P906A provides proportional control us- ing a 135-ohm potentiometer.
- Adjustable main spring determines pressure difference at which controller operates and against which difference in highand low pressure must act.
- P606A has dust-proof, trouble-free mercury switch.
- Three mounting lugs furnished on each device to facilitate installation.
- Blank scale supplied for marking as re- quired
SPECIFICATIONS
MODELS:
ORDERING INFORMATION
WHEN PURCHASING REPLACEMENT AND MODERNIZATION PRODUCTS FROM YOUR TRADELINE WHOLESALER OR YOUR DISTRIBUTOR, REFER TO THE PRICE SHEETS FOR COMPLETE ORDERING NUMBER, OR SPECIFY-
- Model number.
- Operating pressure.
IF YOU HAVE ADDITIONAL QUESTIONS, NEED FURTHER INFORMATION, OR WOULD LIKE TO COMMENT ON OUR
PRODUCTS OR SERVICES, PLEASE WRITE OR PHONE:
- YOUR LOCAL HONEYWELL RESIDENTIAL SALES OFFICE (CHECK WHITE PAGES OF YOUR PHONE DIRECTORY).
- RESIDENTIAL GROUP CUSTOMER SERVICE HONEYWELL INC., 1885 DOULGAS DRIVE NORTH MINNEAPOLIS, MINNESOTA 55422 (612)542-7500
(IN CANADA-HONEYWELL LIMITED/HONEYWELL LIMITEE, 740 ELLESMERE ROAD, SCARBOROUGH, ONTARIO M1P 29). INTERNATIONAL SALES AND SERVICE OFFICES IN ALL PRINCIPAL CITIES OF THE WORLD.
CONTROL ACTION:
P606A-Closes R-B contacts and opens R-W contacts on decrease in pressure
difference. P906A-Single potentiometer wiper contacts B on decrease in
pressure difference.
- ADJUSTMENT MEANS: Screw on top of case.
- BELLOWS CONNECTION: 1/4-18 NPT.
- FINISH: Gray.
- DIMENSIONS: See Fig. 1.
INSTALLATION
WHEN INSTALLING THIS PRODUCT …
- Read these instructions carefully. Failure to follow them could damage the product or cause a hazardous condition.
- Check the ratings given in the instructions and on the product to make sure the product is suitable for your application.
- Installer must be a trained, experienced service technician.
- After installation is complete, check out product operation as provided in these instructions.
CAUTION
Disconnect power supply before beginning installation to prevent electrical
shock and equipment damage.
MOUNTING
Mount the controller on a surface that is free of excessive vibration. Level
the control using the leveling pendulum (Fig. 5). This is necessary for proper
mercury switch operation.
When the control is used in steam applications, it should be mounted above the
level of the steam main. If this cannot be done, provide a trap to prevent
con- densation from collecting above the control’s bellows.
NOTE: To prevent strain on the bellows, use the proper fittings when connecting the tubing or pipe to the bellows connections (see Fig. 2). Use care when running lines so that pipe dope and scale do not get into the internallines.
WIRING
Disconnect power supply before beginning installa-tion to prevent electrical
shock and equipment damage. All wiring must comply with local electrical codes
and ordinances. See Fig. 4 for typical system hookup. Internal schematics of
these controllers are shown in Fia 3
ADJUSTMENTS AND CHECKOUT
PRESSURE DIFFERENCE ADJUSTMENT
Because these controllers have such a wide variety of applications, they are
adjusted on the job with the system in operation.
-IMPORTANT-
The device controls the difference between thepressures exerted upon the 2
bellows, not the gauge oressure.
-
Conenct a pressure gauge with adequate range to each element assembly.
-
Connect the Pressuretrol controller and gauges to the pressure points to be controled, or use a compressed air supply to duplicate actual pressures.
-
Turn the differential adjustment screw and the pressure difference adiustment screw coun- terclockwise (Fig. 5 or 6) until the scale indicators reach the low (minimum) end of the scale.
NOTE: Do not go beyond the point at which the linkage ocols to show siack. -
Apply typical operating pressures in sequence to the left and right elements (high and low pressure sides, respectively). Turn the pressure difference adjustmentscrew clockwise und the mercury switch just makes or breaks the circuit. This is the switch action on a decrease in pressure difference. The proportional Pressuretrol (P906A) must be calibrated with the device it operates. The Pressuretrol is set for the pressure difference between the high and low oressures on the control.
-
Increase the pressure differential applied to the Pressuretrol controller by the amount of the differential
-
Turn the differential adjustment screw clockwise until the mercury switch rotates and then stops at approximately the horizontal position. Continue turning the adjustment screw an additional 2 turns. Manually rotate operating lever clockwise unt the mercury swich makes or oreaks ie circus
Allow the operating lever to slowly return to its original position. If the mercury remakes or rebreaks the circuit, turn the differential adjustment screw clockwise an additional turn. Then repeat the check with the operating lever. Turn the differential adjustment screw terclockwise until the mercury switch just makes or breaks the circuit. This is the switch action on an increase in pressure difference.
Dear Customer,
Plesse send vour comments and suggestions to:
Honeywell Inc,
10400 Yellow
Circie Drive we welcome your comments and suggestions for improving this
public
COOTER
Your assistance is greatiy appreciated and will enable us to provide better
tochnical information for you.
Minnetonka, Minnesota 55343
ATTN:
Publications Supervisor MN38-3247
HONEYWELL MINNEAPOLIS. MN 55408 INTERNA TIONAL Sales Offices in all orincioa
cities of the world. Manufacturing in
Germany, Japan, Mexico, Netherlands, Spain, Taiwan, United Kingdom,
PRINTED: U.s.A.
Documents / Resources
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Honeywell P906A Pressuretrol Pressure
Controller
[pdf] Instructions
P906A Pressuretrol Pressure Controller, P906A, Pressuretrol Pressure
Controller, Pressure Controller, Controller
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References
Read User Manual Online (PDF format)
Read User Manual Online (PDF format) >>