Product Overview

ManualsBrandsHoneywell ManualsGas and Oil Burner AccessoriesDynamic Self-Check Ultraviolet Flame Detector w/ Brad Harrison Connector (115/230V)

Table Of Contents

PRODUCT DATA

65-0223-07

SIL

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

Summary of content (12 pages)

PAGE 1
C7061A,F Dynamic Self-Check Ultraviolet Flame Detector PRODUCT DATA FEATURES C7061A • 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.
PAGE 2
C7061A,F DYNAMIC SELF-CHECK ULTRAVIOLET FLAME DETECTOR SPECIFICATIONS Mounting: C7061A: Mounting flange with 3/4 NPT internal threads for attaching to sight pipe. C7061A1046: Mounting flange with 1 inch NPT internal threads for attaching to sight pipe. C7061F: Pipe union with 1 inch NPT internal threads for attaching to sight pipe. IMPORTANT The specifications in this publication do not include normal manufacturing tolerances. Therefore, this unit may not exactly match the specifications listed.
PAGE 3
C7061A,F DYNAMIC SELF-CHECK ULTRAVIOLET FLAME DETECTOR 114465 Gasket, silicone rubber; for installing viewing window (three required). 190971B Coil and Shutter Assembly. C7061A: 114372 Quartz Viewing Window; rated for 20 psi (138 kPa). 120739 Gasket, fiber-neoprene; heat insulation and seal-off for mounting flange. C7061F: 122037 Quartz Viewing Window; rated for 100 psi (690 kPa). 2. 3. 4. CAUTION Equipment damage hazard. Sensing tube can fail to discriminate between flame conditions.
PAGE 4
C7061A,F DYNAMIC SELF-CHECK ULTRAVIOLET FLAME DETECTOR Determine Location High voltage condensers. Before beginning the actual installation, determine the best location for mounting the detector. Carefully consider the factors discussed in this section before deciding on the location. High voltage coronas. Radioisotopes. Except under unusual circumstances, none of these sources except hot refractory and ignition spark would be present in or near the combustion chamber.
PAGE 5
C7061A,F DYNAMIC SELF-CHECK ULTRAVIOLET FLAME DETECTOR In multiple burner systems, not every detector can be positioned so its line-of-sight does not intercept flames from other burners. For example, this situation occurs in front-fired boiler-furnaces having more than one row of burners, or in multilevel opposed-fired furnaces where the burners face each other.
PAGE 6
C7061A,F DYNAMIC SELF-CHECK ULTRAVIOLET FLAME DETECTOR Sight Pipe Ventilation BLACK IRON SIGHT PIPE (1-1/2 TO 3 in. (38 TO 76 mm) DIA.) It may be necessary to ventilate the sight pipe to cool the detector or to clear a viewing path through UV radiation attenuating material.
PAGE 7
C7061A,F DYNAMIC SELF-CHECK ULTRAVIOLET FLAME DETECTOR NOTCH IN FACE PLATE 124198 (1 IN.
PAGE 8
C7061A,F DYNAMIC SELF-CHECK ULTRAVIOLET FLAME DETECTOR 3. 4. 5. 6. 7. conduit type and diameter. The ultimate limiting factor in flame signal leadwire length is the signal current. Refer to Table 1. The detector has color-coded plastic-insulated, no. 18 leadwires, 8 ft (2.4m) long, rated for 221°F (105°C). These wires must be run in a conduit. If the leadwires are not long enough to reach the terminal strip or wiring subbase, make the required splices in a junction box.
PAGE 9
C7061A,F DYNAMIC SELF-CHECK ULTRAVIOLET FLAME DETECTOR 1. Measure the flame signal for the pilot alone, the main burner flame alone, and both together (unless monitoring only the pilot flame when using an intermittent pilot, or only the main burner flame when using direct spark ignition). Also measure the flame signal at low and high firing rates and while modulating in between (as applicable).
PAGE 10
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 the detector slightly so the screws clear the slots in the back section of the flange; separate the flange; and pull off the back section (with the UV sensor). WARNING Electrical shock hazard. Can cause serious injury or death.
PAGE 11
C7061A,F DYNAMIC SELF-CHECK ULTRAVIOLET FLAME DETECTOR Replacing Ultraviolet Sensing Tube (All Models) (Fig. 11) IMPORTANT Be very careful not to kink or otherwise damage the flexible shutter. 7. IMPORTANT Be very careful not to kink or otherwise damage the flexible shutter. 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 8. Open the master switch and remove the cover from the detector (see instructions above). Locate the UV sensing tube. Gently bend the alignment guide just enough to free the tip of the tube.
PAGE 12
C7061A,F DYNAMIC SELF-CHECK ULTRAVIOLET FLAME DETECTOR Replacing Quartz Viewing Window (or Focusing Lens) Open the master switch and remove the detector from the sight pipe (see appropriate section). IMPORTANT Use quartz window or lens. Ordinary glass absorbs or filters out ultraviolet radiation. 2. 3. Replace the detector cover and reinstall the detector on the sight pipe. C7061F (Fig. 15) C7061A (Fig. 14) 1. 11.