Honeywell C7061A User Manual

PRODUCT DATA
65-0223-07
SIL
3
Capable
C7061A,F Dynamic Self-Check
Ultraviolet Flame Detector
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.
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).
C7061F
C7061A
Contents
Application ........................................................................ 1
Features ........................................................................... 1
Specifications ................................................................... 2
Ordering Information ........................................................ 2
Installation ........................................................................ 3
Wiring (Fig. 10) ................................................................. 7
Adjustments and Checkout .............................................. 8
Troubleshooting ................................................................ 10

Honeywell C7061A Specifications

General

Humidity Range	0 to 95% RH, non-condensing
Mounting	Ceiling or wall mount
Current Draw	15 mA
Weight	0.5 lb
Compatibility	Compatible with Honeywell security systems

Summary

Product Data

Application

Describes the use of C7061A,F detectors for sensing ultraviolet radiation from combustion.

Features

Installation

Basic Requirements

Determine Location

Factors to consider when selecting the best mounting location for the detector.

Flame Discrimination

Install the Sight Pipe

Guidance on selecting and installing the sight pipe for proper detector alignment and view.

Prepare Hole in Combustion Chamber Wall

Mount Sight Pipe

Mount the Detector

Instructions for mounting the C7061 detector onto the sight pipe or fitting.

Wiring

Wiring Connections

Details on wiring the C7061A,F detectors, including precautions and wire length considerations.

Connecting Detectors in Parallel

Adjustments and Checkout

UV Sensor Tube Test

Adjust Detector Sighting

Instructions for adjusting the detector's sighting position for an optimum flame signal.

Pilot Turndown Test

Ultraviolet Response Tests Ignition Spark

Final Checkout

Procedure to verify correct operation after installation and adjustment.

Troubleshooting

Removing Detector from Sight Pipe

Procedure for Zero Meter Reading

Troubleshooting steps to address a zero flame signal reading.

Unsatisfactory Flame Signal

Procedures for addressing issues when a satisfactory flame signal cannot be obtained.

Preliminary Inspection

Service

Removing Detector Cover

Replacing Ultraviolet Sensing Tube

Detailed steps for replacing the ultraviolet sensing tube in the detector.

Replacing Coil and Shutter Assembly

Instructions for replacing the coil and shutter assembly with a new unit.

Replacing Quartz Viewing Window (C7061A)

Steps for replacing the quartz viewing window or focusing lens on the C7061A model.

Replacing Quartz Viewing Window (C7061F)

Steps for replacing the quartz viewing window on the C7061F model.