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Honeywell Minipeeper C7027A Product Data

Ultraviolet flame detectors
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Minipeeper® Ultraviolet Flame Detectors
C7027A
C7044A

APPLICATION

The C7027A, C7035A, C7044A and C7927A Minipeeper®
Ultraviolet Flame Detectors detect the ultraviolet radiation
emitted by combustion flames. The flame detectors are used
with Honeywell flame safeguard controls to provide flame
supervision for gas, oil, or combination gas-oil burners.

FEATURES

• C7027A, C7035A, and C7044A Flame Detectors are
used with R7249A, R7290A, R7749B and R7849A,B
Amplifiers and the appropriate Honeywell controls.
® U.S. Registered Trademark
Copyright © 2000 Honeywell • All Rights Reserved
C7027A, C7035, C7044A, C7927A
C7035A
C7927A
• C7044A may also be used with the following 50 Hz
Honeywell combustion controls/amplifiers:
- R4341/R7323
- R4343/R7323
- R4344/R7323
• C7027A has an integral collar threaded (internal
1/2-14 NPSM) for mounting on a one-half-inch sight
pipe.
• C7035A has an integral collar threaded (internal
1-11-1/2 NPSM) for mounting on a one-inch sight pipe.
• C7035A housing meets Underwriters Laboratories Inc.
requirements for rain tightness and complies with
NEMA enclosure standards, types 4 and 4X.
• C7044A mounts with a two screw bracket. The UV
sensor tube is enclosed in a stainless steel housing.
• C7044A has the capability of side or end viewing in
flame monitoring applications.
• Because of their compact size, the C7027A and
C7044A are particularly suitable for blast tube
mounting.
• Properly installed, the C7027A and C7035A are
pressure rated for 5 psi.
• C7035A ultraviolet radiation sensor tube is field
replaceable.
• Two C7027A, C7035A or C7044A Flame Detectors can
be wired in parallel for difficult flame sighting
installations.
• C7927A is used with only the R7851B Flame Amplifier
and the appropriate Honeywell controls.
• C7927A has an integral collar threaded (internal
1/2-14 NPSM) for mounting on a one-half inch sight
pipe.
Application ........................................................................
Features ...........................................................................
Specifications ...................................................................
Ordering Information ........................................................
Installation ........................................................................
Wiring (All Models-Fig. 10) .............................................
Adjustments and Checkout ..............................................
Troubleshooting ................................................................ 12
Maintenance ..................................................................... 12
PRODUCT DATA
Contents
1
1
2
2
4
8
9
60- 2026- 10

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Table of Contents
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  Summary of Contents for Honeywell Minipeeper C7027A

  • Page 1: Table Of Contents

    Ultraviolet Flame Detectors detect the ultraviolet radiation pressure rated for 5 psi. emitted by combustion flames. The flame detectors are used with Honeywell flame safeguard controls to provide flame • C7035A ultraviolet radiation sensor tube is field supervision for gas, oil, or combination gas-oil burners.
  • Page 2: Specifications

    Honeywell, 1885 Douglas Drive North Minneapolis, Minnesota 55422-4386 (800) 328-5111 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 MINIPEEPER® ULTRAVIOLET FLAME DETECTORS C7035A Minipeeper® Ultraviolet Dimensions: See Fig. 2. Flame Detector: Replacement Parts: 129808 Flange Gasket. Flame Detection: End viewing. 129464M Ultraviolet Sensing Tube, 0°F to 250°F (-18°C to +121°C). Ambient Operating Temperature Ratings: 0°F to 250°F 129464N Ultraviolet Sensing Tube, -40°F to +250°F (-40°C to (-18°C to +121°C), or -40°F to 250°F (-40°C to +121°C), 121°C).
  • Page 4: Installation

    Consult the equipment manufacturer or the governing standard for recommendations about frequency of checks. Controls incorporating safe-start checks, and sensors and controls employing constant check means are available from Honeywell. See your Honeywell representative for specific information. 60-2026—10...
  • Page 5 1. Ultraviolet Sources: 1. The C7027A, C7035A , C7044A and C7927 Flame a. Hot refractory above 2800°F (1371°C). Detectors must be used with Honeywell flame b. Spark. safeguard controls (primaries, programmers, c. ignition transformers. multiburner systems, and burner management d.
  • Page 6 MINIPEEPER® ULTRAVIOLET FLAME DETECTORS Mounting a C7027A, C7927 or C7035A Mounting The Sight Pipe (Fig. 6) Thread one end of the pipe to fit the mounting collar on the detector. Cut the pipe to the desired length (as short as Locate the Sight Pipe practicable), and at an angle so it fits flush with the wall of the The location of the sight pipe is the most critical part of the...
  • Page 7 MINIPEEPER® ULTRAVIOLET FLAME DETECTORS Swivel Mount To facilitate proper sighting of the flame, a swivel mount (part no. 118367A) is available. The swivel mount will require a 3/4 C7027A (OR C7035A) to 1/2 in. reducer and a 1/2 in. close nipple to mount a C7027A, or a 1 in.
  • Page 8: Wiring (All Models-Fig. 10)

    [90°C] if used with a flame safeguard programming DETECTOR control. 4.For high temperature installations, use Honeywell Specification no. R1298020 or equivalent for the F leadwire. (This wire is rated up to 400°F [204°C] for continuous duty. It is tested for operation up to 600V and breakdown up to 7500V.) For the other leadwires,...
  • Page 9: Adjustments And Checkout

    The flame signal can be measured with a volt-ohmmeter ground connection at the mounting bracket. such as the Honeywell W136A. To measure the flame current (signal), use a cable connector (part number 196146, included with the W136A) in conjunction with the meter. With the...
  • Page 10 The R7749B and R7849A,B Amplifiers used with the must be steady with a current/voltage value as indicated in Honeywell BCS 7700 and 7800 SERIES controls, Table 1. If the minimum signal cannot be obtained or is respectively, have a dc voltage flame signal output.
  • Page 11 Table 1. Flame Signal. Honeywell Flame Minimum Acceptable Maximum Current Minimum Maximum Flame Plug-in Safeguard Steady Current Expected Acceptable Voltage Detector Amplifier Control (microamps) (microamps) Voltage (Vdc) (Vdc) C7027A, R7249A BC7000 + PM720 3.5 — — C7035A, R7749B BCS7700A —...
  • Page 12: Troubleshooting

    1. Clean the viewing window and sight pipe (if used) when are encountered in the system, refer to Troubleshooting in the necessary. Remove the detector and use a soft, clean Instructions for the appropriate Honeywell flame safeguard cloth to remove accumulated contaminants from the control.

This manual is also suitable for:

Minipeeper c7035Minipeeper c7927aMinipeeper c7044a