Honeywell Pressuretrol P7810C Quick Start Manual
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Honeywell Pressuretrol P7810C Quick Start Manual

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Table of Contents

APPLICATION

The P7810 Pressuretrol® Controller is a line voltage pressure
controller that provides automatic operating control, automatic
safety high limit protection, and optional modulating firing rate
control for pressure systems up to 300 psi.
® U.S. Registered Trademark
Copyright © 1998 Honeywell Inc. • All Rights Reserved
Pressuretrol

FEATURES

• Use only with steam, air or noncombustible gases that
do not corrode the pressure sensing element.
• Models available with on-off control function, safety
high limit and modulate, and on-off control and safety
high limit functions.
• Models available in 15, 150, and 300 psi maximum
setpoints.
• LED indicators show power and call for heat function
and lockout status.
• Clear cover allows setpoint and differentials to be
read, but not adjusted, without opening cover.
• Manual reset possible without opening cover.
• P7810C contains on/off Control, High Limit and
4 to 20 mA Firing Rate Control.
• P7810D contains on/off Control and High Limit
Control.
Application ........................................................................... 1
Features .............................................................................. 1
Specifications ...................................................................... 2
Ordering Information ........................................................... 2
Installation ........................................................................... 3
Operation ............................................................................ 4
Checkout and Troubleshooting ............................................ 7
Troubleshooting ................................................................... 8
Service Information ............................................................. 8
P7810C,D
Controller
®
PRODUCT DATA
Contents
65-0235-1
Table of Contents
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Summary of Contents for Honeywell Pressuretrol P7810C

  • Page 1: Table Of Contents

    Features ................1 Specifications ..............2 Ordering Information ............2 Installation ................3 Operation ................4 Checkout and Troubleshooting ..........7 Troubleshooting ..............8 Service Information ............. 8 ® U.S. Registered Trademark Copyright © 1998 Honeywell Inc. • All Rights Reserved 65-0235-1...

  • 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

    ® P7810C,D PRESSURETROL CONTROLLER 4-21/32 (119) 1/4 (6) 2x1-5/8 (41) 2x27/32 (22) DIAMETER PRESSURETROL ® 2-5/8 (67) (102) 5-1/4 4-3/4 (133) (120) 4-23/32 RESET (120) 3-3/16 (10) 7/8 (81) (22) 2-1/8 (55) 2-17/32 2-5/8 (67) 1-5/8 (41) (82) 2x5-1/4 (133) 5-29/32 (150) 3-7/32 (82) 3-3/8 (86)
  • Page 4 ® P7810C,D PRESSURETROL CONTROLLER Remote Location Mounting P7810C,D GAUGE Excessive vibration at the boiler can damage P7810C,D Pressuretrol® Controller electronics. 1. Mount the P7810C,D Pressuretrol® Controller at a remote location to eliminate vibration problems. 2. Make sure that all piping from the boiler is suitable to the application and solidly mounted.

  • Page 5: Operation

    ® P7810C,D PRESSURETROL CONTROLLER MODUTROL ® P7810 PRESSURETROL ® 7800 SERIES Replace the front cover after completing the wiring. PROGRAMMER MOTOR CONTROLLER HIGH Wiring for the 4 to 20 mA operation is shown in Fig. 5. COMMON OPERATION MODULATION – The P7810C,D uses integral electronic pressure sensors to 66.5 sense pressure at the inlet.
  • Page 6 ® P7810C,D PRESSURETROL CONTROLLER The upper operating point is determined by the control setpoint, while the lower operating point is determined by the LINE VOLTAGE control range setting (control setpoint minus the differential setting). See Fig. 8. 1/4 IN. NPT (MODULATE) N.O.

  • Page 7: Checkout And Troubleshooting

    ® P7810C,D PRESSURETROL CONTROLLER Check the make and break points of the P7810 Pressuretrol® LED Display Controller. If they do not agree with a separate, accurately The yellow light emitting diode (LED) is always lighted with calibrated pressure gauge, make a slight adjustment power applied to the P7810 Pressuretrol®...

  • Page 8: Troubleshooting

    Checkout section. functioning properly by performing an operational check of the entire system during routine maintenance checks. Home and Building Control Home and Building Control Honeywell Asia Pacific Inc. Honeywell Honeywell Limited/Honeywell Limitée Room 3213-3225 1985 Douglas Drive North...

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