Honeywell C7961E User Manual

PRODUCT DATA
65-0267—09
C7961E,F Dynamic Self-Check
Ultraviolet Flame Detector
APPLICATION
The C7961E,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 at a 3 Hz rate to provide the UV
sensor tube checking function. The 7800 Series
Control conducts an additional shutter test every 5
seconds.
• Detectors can be mounted horizontally, vertically or at
any other angle.
• Quartz viewing window is field replaceable.
• Threaded conduit fitting and color-coded leadwires
allow rapid electrical installation.
• 3/4 in. and 1 in. NPT mounting models available.
• Models available with Molex Woodhead
1R5006A20A120 (Formerly Brad Harrison® 41310)
connector.
• A swivel mount is available to facilitate flame sighting.
• -40°F (-40°C) rated ultraviolet sensing tube.
• Incorporates UV sensor tube checking feature; used
with R7851C Dynamic Self-check Amplifiers.
• High pressure 50 psi (345 kPa) quartz viewing window,
magnifying lens and antivibration mount are available
as accessories.
• Housing meets NEMA 4 enclosure standards (C7961E).
• Protective heat block built into mounting flange.
• C7961E, F are immune to x-ray.
C7961F:
• 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).
C7961F
C7961E
Contents
Application ........................................................................ 1
Features ........................................................................... 1
Specifications ................................................................... 2
Ordering Information ........................................................ 2
Installation ........................................................................ 3
Wiring (Fig. 10) ................................................................. 7
Adjustments and Checkout ............................................... 8
Troubleshooting ................................................................ 9
Service ............................................................................. 10

Honeywell C7961E Specifications

General

Brand	Honeywell
Model	C7961E
Category	Security Sensors
Language	English

Summary

Specifications

Installation

Determine Location

Single Burner Sighting

Sight Pipe Installation

Instructions for selecting, preparing, and installing the sight pipe for the detector.

Mount Sight Pipe

Steps for threading, cutting, and positioning the sight pipe for mounting the detector.

Mount the Detector

Procedures for physically mounting the C7961 detector onto the sight pipe or fitting.

Wiring

Adjustments and Checkout

Adjust Detector Sighting

Procedure for adjusting the detector's position for optimal flame signal readings.

Pilot Turndown Test

Ignition Spark Response Test

Test to ensure ignition spark does not falsely trigger the flame relay.

Troubleshooting

Preliminary Inspection

Unsatisfactory Flame Signal

Procedures to follow if a satisfactory flame signal cannot be obtained.

Service

Replacing Quartz Viewing Window

Replacing Quartz Viewing Window (C7961F)