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Honeywell C7061A Product Data

Dynamic self-check ultraviolet flame detector
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C7061A,F Dynamic Self-Check
Ultraviolet Flame Detector
C7061F

APPLICATION

The C7061A,F are dynamic self-checking flame detectors for
sensing the ultraviolet radiation generated by the combustion
of gas, oil, or other fuels.
C7061A

FEATURES

• Oscillating shutter interrupts ultraviolet radiation
reaching the UV sensor 12 times per minute to provide
the UV sensor tube checking function. Amplifier
circuitry components are checked from the
microprocessor in the 7800 Series Control.
• Detectors can be mounted horizontally, vertically or at
any other angle. The self-checking C7061 models
require faceplate alignment and have integral locating
reference points to assure proper shutter mechanism
operation.
• Ultraviolet radiation sensing tube and quartz viewing
window are field replaceable.
• Threaded conduit fitting and color-coded leadwires
allow rapid electrical installation.
• Models available using Brad Harrison® 41310
connector.
• Two flame detectors can be wired in parallel to reduce
nuisance shutdowns in difficult flame sighting
applications.
• -40°F (-40°C) rated ultraviolet sensing tube.
• Incorporates UV sensor tube checking feature; used
with R7861 Dynamic Self-check Amplifiers.
• Housing meets NEMA 4 enclosure standards (C7061A).
• Protective heat block built into mounting flange.
C7061F
• Housing designed to be explosion-proof and
Underwriters Laboratories Inc. listed for use in
hazardous locations; Class I, groups C and D; and
Class II, groups E, F and G.
• Viewing window rated for 100psi (690 kPa).
Application ........................................................................
Features ...........................................................................
Specifications ...................................................................
Ordering Information ........................................................
Installation ........................................................................
Wiring (Fig. 10) .................................................................
Adjustments and Checkout ..............................................
Troubleshooting ................................................................ 10
SIL
3
Capable
PRODUCT DATA
Contents
1
1
2
2
3
7
8
65-0223-07

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Table of Contents
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  Summary of Contents for Honeywell C7061A

  • Page 1: Table Of Contents

    APPLICATION • Incorporates UV sensor tube checking feature; used with R7861 Dynamic Self-check Amplifiers. The C7061A,F are dynamic self-checking flame detectors for • Housing meets NEMA 4 enclosure standards (C7061A). sensing the ultraviolet radiation generated by the combustion of gas, oil, or other fuels.
  • Page 2: Specifications

    If you have additional questions, need further information, or would like to comment on our products or services, please write or phone: 1. Your local Honeywell Automation and Control Products Sales Office (check white pages of your phone directory). 2. Honeywell Customer Care...
  • Page 3: Installation

    M10167A manufactured controls (primaries, programmers, multiburner systems, and burner management Fig. 1. Dimensions of C7061A in in. (mm). systems). Unsafe conditions could result. 2. All wiring must be NEC Class 1 (line voltage). 3. Voltage and frequency of the power supply connected...
  • Page 4 C7061A,F DYNAMIC SELF-CHECK ULTRAVIOLET FLAME DETECTOR Determine Location High voltage condensers. Before beginning the actual installation, determine the best High voltage coronas. location for mounting the detector. Carefully consider the factors discussed in this section before deciding on the Radioisotopes.
  • Page 5 C7061A,F DYNAMIC SELF-CHECK ULTRAVIOLET FLAME DETECTOR In most installations, the detector needs to respond to the pilot In multiple burner systems, not every detector can be flame alone, then the pilot and main burner flame together, and positioned so its line-of-sight does not intercept flames from finally the main burner flame alone.
  • Page 6 C7061A,F DYNAMIC SELF-CHECK ULTRAVIOLET FLAME DETECTOR Sight Pipe Ventilation BLACK IRON SIGHT It may be necessary to ventilate the sight pipe to cool the PIPE (1-1/2 TO 3 in. REDUCER detector or to clear a viewing path through UV radiation (38 TO 76 mm) DIA.)
  • Page 7: Wiring (Fig. 10)

    (with the detector) over the three screws in the front sec- amplifier. tion, and rotate the detector so the screws hold the When using a C7061A with an R7861 Dynamic flange together. Self-Check Amplifier, be careful not to short the white 5.
  • Page 8: Adjustments And Checkout

    Measure the flame signal as illustrated in IMPORTANT Fig. 10. Be careful to make the proper connections of Voltage and frequency rating of the C7061A must positive (red) meter lead to positive (+) control jack and match the power supply of the flame safeguard negative (black) meter lead to negative (-) or (-Com) jack with control.
  • Page 9 EC7890B; RM7895A,B,C,D; RM7896A,B,C,D; EC7895A,C; EC/RM7885; EC7810; EC7820; EC/RM7830; EC7850. Shutter operation of the C7061A causes fluctuations in the voltage reading. Read the average stable voltage, disregarding the peaks. Shutter operates at 12 cycles per minute. Weld the Sight Pipe 2. Start the burner and run through the Ignition period. Igni-...
  • Page 10: Troubleshooting

    C7061A,F DYNAMIC SELF-CHECK ULTRAVIOLET FLAME DETECTOR TROUBLESHOOTING Removing Detector from Sight Pipe (Refer to Fig. 8) Loosen the three screws holding the mounting flange; rotate WARNING the detector slightly so the screws clear the slots in the back section of the flange; separate the flange; and pull off the back Electrical shock hazard.
  • Page 11 C7061A,F DYNAMIC SELF-CHECK ULTRAVIOLET FLAME DETECTOR Replacing Ultraviolet Sensing Tube IMPORTANT Be very careful not to kink or otherwise damage the (All Models) (Fig. 11) flexible shutter. 7. Insert the three mounting screws into the base of the coil IMPORTANT and shutter assembly and tighten securely.
  • Page 12 C7061A,F DYNAMIC SELF-CHECK ULTRAVIOLET FLAME DETECTOR Replacing Quartz Viewing Window 11. Replace the detector cover and reinstall the detector on the sight pipe. (or Focusing Lens) C7061F (Fig. 15) C7061A (Fig. 14) Open the master switch and remove the detector from the sight pipe (see appropriate section).

This manual is also suitable for:

C7061f