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Honeywell Pressuretrol P7810A Product Data

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P7810C, D
APPLICATION
The P7810 Pressuretrol® Controller is a line voltage pressure
controller for pressure systems up to 300 psi (2069 kPa). Four
models are available:
• P7810A—On/Off Control
• P7810B—On/Off Control with 4 to 20 mA modulation.
• P7810C—On/Off Control, High Limit and 4 to 20 mA
modulation.
• P7810D—On/Off Control with High Limit.
® U.S. Registered Trademark
Copyright © 2002 Honeywell • All Rights Reserved
Pressuretrol® Controller
P7810A, B
FEATURES
• Use only with steam, air or noncombustible gases that
do not corrode the pressure sensing element.
• Models available with on-off control function, on-off
control and modulate, high limit and modulate, and
on-off control and safety high limit functions.
• Models available in 15, 150 and 300 psi (103, 1034 and
2069 kPa) maximum setpoints.
• LED indicators show power, call for heat function and
lockout status.
• Clear cover allows setpoint and differential to be read,
but not adjusted, without opening cover, (Cover
optional for P7810A,B models.)
• Manual reset possible without opening cover.
• Electronic maximum fixed stop limit.
Application ........................................................................
Features ...........................................................................
Specifications ...................................................................
Ordering Information ........................................................
Installation ........................................................................
Wiring ...............................................................................
Operation ..........................................................................
Checkout .......................................................................... 11
Troubleshooting ................................................................ 12
Service Information .......................................................... 12
P7810A-D
PRODUCT DATA
Contents
1
1
2
2
3
5
7
65-0268-1

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  Summary of Contents for Honeywell Pressuretrol P7810A

  • Page 1 • P7810D—On/Off Control with High Limit. Features ................Specifications ..............Ordering Information ............Installation ................ Wiring ................Operation ................Checkout ................11 Troubleshooting ..............12 Service Information ............12 ® U.S. Registered Trademark Copyright © 2002 Honeywell • All Rights Reserved 65-0268-1...
  • Page 2: Specifications

    Honeywell, 1885 Douglas Drive North Minneapolis, Minnesota 55422-4386 In Canada—Honeywell Limited/Honeywell Limitée, 35 Dynamic Drive, Scarborough, Ontario M1V 4Z9. International Sales and Service Offices in all principal cities of the world. Manufacturing in Australia, Canada, Finland, France, Germany, Japan, Mexico, Netherlands, Spain, Taiwan, United Kingdom, U.S.A.
  • Page 3: Installation

    P7810A-D PRESSURETROL® CONTROLLER Table 3. Pressure Ratings (psig). Pressure Range Maximum Setpoint Differential Overpressure Burst Pressure 0 to 15 2 to 10 22.5 0 to 150 5 to 20 0 to 300 15 to 50 1200 4-21/32 (119) 1/4 (6) 2x1-5/8 (41) 2x27/32 (22) DIAMETER...
  • Page 4 P7810A-D PRESSURETROL® CONTROLLER Controller next to the pressure gauge in the manufacturer-provided fitting on the boiler. See Fig. 2 and 4. PRESSURE Mount at a remote location to avoid excessive vibration, or GAUGE PRESSURE mount in a special mounting on a low water cutoff. CONTROLLER IMPORTANT 1.
  • Page 5: Wiring

    P7810A-D PRESSURETROL® CONTROLLER 3. Mount the P7810 Controller and pressure gauge on the All P7810 Pressuretrol® Controllers have terminal screws and end of the tee. 27/32 in. (22 mm) holes in both sides for conduit, cables and 4. If not convenient to mount the P7810 Controller next to wiring.
  • Page 6 P7810A-D PRESSURETROL® CONTROLLER SERIES 70 MODUTROL ® P7810 PRESSURETROL ® 7800 SERIES (M7284) PROGRAMMER MOTOR CONTROLLER 7800 SERIES MODUTROL IV CONTROLLER HIGH PROGRAMMER MOTOR P7810 (4-2O mA) HIGH FIRE COMMON COMMON – MODULATION – 66.5 MODULATE 4 TO 20mA – LOW FIRE 2K1 1K1 OUTPUT...
  • Page 7: Operation

    P7810A-D PRESSURETROL® CONTROLLER OPERATION Modulate Control Function (P7810B,C Only) The P7810 uses integral electronic pressure sensors to sense pressure at the inlet through an internal manifold. The control When the pressure decreases to or below the modulation sensor connects to the internal manifold with 1/4 inch NPT setpoint, the current is 20 mA.
  • Page 8 P7810A-D PRESSURETROL® CONTROLLER The High Limit Setpoint can be set above the internal stored The P7810C,D remains in this condition until the manual reset Maximum Fixed Stop Limit Value but it will have no functional button (see Fig. 1) is pressed. The Alarm (3K1) relay contacts effect.
  • Page 9 P7810A-D PRESSURETROL® CONTROLLER Table 5. Reset Switch Function, P7810C,D. P7810C,D Modes of Operation Power-up Power-up Reset Switch (Run) Normal (Configuration (Configuration Action Lockout Unconfigured Operation Time Expired) Time Not Expired) Press and Blink existing fault Both LEDs turn on The green LED Both LEDs turn on.
  • Page 10 P7810A-D PRESSURETROL® CONTROLLER 1. Record the original location of the Limit setpoint knob. Yellow light emitting diode (LED) ON constantly indicates Make sure that the Limit setpoint knob is set (moved to) power applied; green LED On indicates closed contact or call a lower value than the Maximum Fixed Stop Limit Value for heat.
  • Page 11: Checkout

    P7810A-D PRESSURETROL® CONTROLLER Table 8. LED Fault Codes and Recommended Troubleshooting. Fault Code System Failure Recommended Troubleshooting High Limit Setpoint Exceeded. When pressure in vessel returns to normal, P7810 can be reset. 12-32, Internal fault Reset P7810; if same fault occurs again, replace P7810. 71-90, 92 51, 54, 61 Internal fault—internal relays...
  • Page 12: Troubleshooting

    Line voltage is present at the P7810 and in all entire system during routine maintenance checks. controller circuits. Use extreme care when troubleshooting. Automation and Control Solutions Honeywell International Honeywell Europe S.A. Honeywell Latin American Region Honeywell Honeywell Limited-Honeywell Limitée Control Products...