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Honeywell C7024E - User Manual

Honeywell C7024E
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1 65-0156—1
C7024E,F 24 Vdc
Solid State Purple Peeper
Ultraviolet Flame Detectors
L.Z. • Rev. 4-94 • ©Honeywell Inc. 1994 • Form Number 65-0156—1
CONTENTS
Specifications ................................................. 2
Ordering Information ..................................... 2
Installation ..................................................... 3
Adjustments and Checkout ............................. 9
Troubleshooting ........................................... 10
Service ..........................................................11
The C7204E,F 24 Vdc Flame Detectors are
solid-state electronic devices for sensing the
ultraviolet radiation emitted by the combustion
of most carbon containing fuels such as natu-
ral gas, LP gases, and oil.
C7024E,F:
Solid-state electronic circuitry provides low power
consumption and high reliability.
Detectors can be mounted horizontally, vertically or
at any angle in between. The self-checking models
require faceplate alignment and have integral lo-
cating reference points to assure proper operation
of the shutter mechanism.
Ultraviolet radiation sensing tube and quartz view-
ing window are field replaceable.
Threaded conduit fitting and color-coded lead-
wires allow rapid electrical installation.
Two flame detectors can be wired in parallel to
reduce nuisance shutdowns in difficult flame sight-
ing applications.
A swivel mount is available to facilitate flame
sighting.
Models are available with a -40° F [-40° C] rating.
Incorporates UV sensor tube checking feature
used with Honeywell dynamic self-check R7824C
Flame Signal Amplifiers.
Oscillating shutter interrupts ultraviolet radiation
reaching UV sensor 12 times per minute to provide
the UV sensor checking function. Amplifier cir-
cuitry components are checked from the micro-
processor in the RM7824.
C7024E:
Housing meets NEMA 4 enclosure standards (in-
door, outdoor protection: rain-tight, dust-tight, hose
directed water).
Protective heat block built into the mounting flange.
High pressure (50 psi) [345 kPa] quartz viewing
window, focusing lens and antivibration mount-
ing accessories available.
C7024F:
Housing designed to be explosion-proof and Un-
derwriters Laboratories Inc. Component Recognized
for use in hazardous locations: Class 1, groups C
and D, and Class 2, groups E, F and G.
Viewing window rated for 100 psi [690 kPa].

Questions and Answers:

Honeywell C7024E Specifications

General IconGeneral
BrandHoneywell
ModelC7024E
CategorySecurity Sensors
LanguageEnglish

Summary

C7024 E,F Ultraviolet Flame Detectors Overview

C7024 E,F Key Features

Highlights solid-state circuitry, flexible mounting, and replaceable components.

C7024 E Housing and Window

Details NEMA 4 enclosure and high-pressure viewing window options.

C7024 F Housing

Focuses on explosion-proof design and hazardous location compliance.

Specifications

Models, Ratings, and Housing

Covers model types, electrical, temperature, and housing specifications.

Window Pressure, Mounting, and Wiring

Details viewing window pressure, mounting, and wiring connections.

Replacement Parts and Accessories

Lists available replacement components and accessories for the detectors.

Ordering Information

Product Ordering Guidance

Provides instructions for purchasing products and obtaining further information.

Installation Procedures

Pre-Installation Checks and Cautions

Critical steps, safety warnings, and precautions before starting installation.

Installation Site Selection

Basic Requirements and Location

Explains detector operation and choosing the best mounting site.

Temperature, Vibration, and Clearance

Addresses managing ambient temperature, vibration, and space.

UV Radiation Sources

Lists non-flame sources that can cause false UV signals.

Flame Sighting and Discrimination

Single Burner Sighting and Screening

Guidance on sighting angle, and mitigating screening effects.

Multiburner Flame Discrimination

Ensuring detectors respond only to their designated flame.

Sight Pipe Installation

Recommendations for sight pipe material and diameter.

Sight Pipe and Fitting Installation

Chamber Hole Prep and Sight Pipe Mounting

Steps for preparing the mounting hole and mounting the sight pipe.

Fittings, Ventilation, and Mounts

Covers reducers, ventilation, swivel, and antivibration mounts.

Detector Mounting Basics

Initial guidance on attaching the detector to the sight pipe.

Detector Mounting Positions

Vertical Mounting and Faceplate Indicators

Illustrates vertical positions and uses of faceplate indicators.

C7024 E and C7024 F Mounting Steps

Detailed procedures for mounting the C7024E and C7024F detectors.

Wiring the Flame Detectors

Wiring Safety and Best Practices

Emphasizes safety, proper leadwire use, and conduit requirements.

Parallel Detector Connections

Guidance on connecting multiple detectors in parallel.

Voltage Matching Requirement

Stresses matching detector voltage to the power supply.

Adjustments and Checkout

UV Sensor Tube and Pilot Tests

Procedures for testing the UV sensor and pilot flame response.

Detector Sighting Adjustment

How to adjust the detector for optimal flame signal.

Ignition Spark Response Test

Verifies that ignition spark does not trigger the flame relay.

Troubleshooting Procedures

Troubleshooting Safety and Equipment

Critical safety warnings and required tools for troubleshooting.

Unsatisfactory Flame Signal Diagnosis

Steps for diagnosing low or zero flame signals.

General Troubleshooting Steps

General procedures for identifying and resolving issues.

Service and Maintenance

Service Safety and Periodic Checks

Safety precautions and routine maintenance for the detector.

Detector Cover Removal

Steps for safely removing the detector's protective cover.

Replacing the UV Sensing Tube

Detailed instructions for replacing the ultraviolet sensing tube.

Component Replacement

Replacing Coil and Shutter Assembly

Instructions for replacing the coil and shutter mechanism.

Replacing Quartz Viewing Window

Guide for replacing the viewing window or focusing lens.

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