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EN1C-0015SZ20 R0602

C7061 A/F

DYNAMIC SELF CHECK ULTRAVIOLET FLAME DETECTOR

APPLICATION

The C7061A is a dynamic self-checking flame detector for
sensing the ultraviolet radiation generated by the combustion
of gas, oil, or other fuels.
This flame detector is available in two versions:
model C7061A for use in Standard applications, and model
C7061F for use in installations requiring explosion-proof
packaging. The flame detector is designed for use with either,

R7061 Dynamic Self-Check Ultraviolet amplifier and
• R4348 Flame Switch or,

or with,

R7861A Dynamic Self-Check Ultraviolet amplifier and,
• 7800 SERIES Burner Programmers

These configurations provide a closed-loop, self-checking
circuit which insures the integrity of both amplifier and flame
detector. Improper response simulated flame loss results in
a safety shutdown and/or alarm.

CONTENTS

GENERAL

Description .................................................................... 2
Features ......................................................................... 2
Orderdering information ................................................ 2

TECHNICAL DATA

Specification .................................................................. 3
Standards and approvals .............................................. 4
Replacement parts and accessories ............................. 4
Dimensional drawing ..................................................... 5

INSTALLATION AND OPERATION

Planning the installation ................................................ 6
Installation ..................................................................... 8
Wiring .......................................................................... 10
Adjustement and checkout ......................................... 12

VARIOUS

Troubleshooting .......................................................... 13
Service ......................................................................... 14

model C7061F

model C7061A

PRODUCT HANDBOOK

Summary of Contents for C7061A

Page 1: ...ier and R4348 Flame Switch or or with R7861A Dynamic Self Check Ultraviolet amplifier and 7800 SERIES Burner Programmers These configurations provide a closed loop self checking circuit which insures the integrity of both amplifier and flame detector Improper response simulated flame loss results in a safety shutdown and or alarm CONTENTS GENERAL Description 2 Features 2 Orderdering information 2 ...

Page 2: ...utter frequency is 60 times per minute Amplifier circuitry components are checked from the microprocessor in the 7800 SERIES Control Detectors can be mounted horizontally vertically or at any angle in between The self checking C7061 models require faceplate alignment and have integral locating reference points to assure proper operation of the shutter mechanism Ultraviolet radiation sensing tube a...

Page 3: ...i maximum C7061F 690 kPa 100 psi maximum Dimensions C7061A see figure 1 C7061F see figure 2 Housing C7061A Construction cast aluminum cover Color Violet Mounting flange with heat block and faceplate are separate to provide heat insulation and seal Off C7061F Meets requirements explosion proof EEx d IIC T6 Construction cast aluminum Cover Color Violet Mounting flange with heat block and faceplate a...

Page 4: ...F 129464M Uttraviolet Sensing Tube 129464N Ultraviolet Sensing Tube for 40 F 40 C operation 190971B Coil and Shutter Assembly Replacement parts for model C7061A 114372 Quartz Viewing Window rated for 20 Psi 138 kPa 114465 Gasket Silicone rubber for installing viewing window three required 120739 Gasket fiber neoprene heat insulation and seal off for mounting flange Accessories for model C7061A and...

Page 5: ...5 EN1C 0015SZ20 R0602 DIMENSIONAL DRAWING Fig 1 Dimensional drawing C7061A in inches mm Fig 2 Dimensional drawing C7061F in mm ...

Page 6: ...detector as close to flame as physical arrangement temperature and other restrictions permit These restrictions are described in detail in the following paragraphs Determine the location Before beginning the actual installation estimate the best location for mounting the detector based upon these factors 1 Temperature Install the flame detector where the surrounding temperature will remain within ...

Page 7: ...positioned so its line of sight does not intercept flames from other burners 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 When planning such an installation locate each flame detector so that it has the best possible view of the root of the flame s it is supervising and the worse p...

Page 8: ...t pipe You may also want to use a swivel mount or an antivibration mount Each of these cases may require additional fittings Reducer For sight pipes of larger diameter than the mounting flange connector or union install a reducer as illustrated in Fig 5 The reducer will require a close nipple with these external threads 3 4 or 1 inch NPT Sight Pipe Ventilation It may be necessary to ventilate the ...

Page 9: ...then separate the two sections C Screw the front section of the mounting flange onto the sight pipe reducer or other fitting D Fit the slots in the back section of the mounting flange with the detector over the three screws in the front section and rotate the detector so the screws hold the flange together E Tighten the screws securely IMPORTANT The rivit on on the faceplate must be at the top see...

Page 10: ...installations use Honey well specification no R1298020 wire or equivalent for the F lead wire This wire is rated up to 204 C 400 F for continuous duty It is tested for operation up to 600 volts and for breakdown up to 7500 volts For the other lead wires use moisture resistant no 14 wire selected for a temperature rating above the maximum operating temperature 7 Refer to Fig 10 for wiring connectio...

Page 11: ... diagram for C7061A1020 C7061F1003 detector with 7800 SERIES Flame Safeguard controls with shutter drive circuitry Fig 10_4 Wiring diagram for C7061A1020 C7061F1003 detector with R4348B Flame Safeguard controls with shutter drive circuitry ...

Page 12: ...relay in the flame safeguard control A Close the pilot and main burner manual shutoff valves B Start the burner and run through the lgnition period lgnition spark should occur but the flame LED must not light The flame signal should not be greater than 0 25 Vdc C If the flame relay does pull in reposition the detector farther from the spark or relocate resight the detector to eliminate reduce the ...

Page 13: ... the position of the detector If you complete all of the procedures and still cannot obtain a proper flame signal replace the detector Preliminary lnspection A Check for the proper line voltage Make sure the master switch is closed connections are correct and power supply is of the correct voltage and frequency B Check the detector wiring for defects a lncorrect connections b Wrong type or size of...

Page 14: ...be out of its socket F Insert the new tube through the openings in the shutter assembly G Align the three pins on the new tube with the holes in the socket H Carefully push the new tube firmly into the socket the alignment guide will snap into place around the tip of the tube I Make sure the new UV sensor tube is seated securely J Replace the detector cover Replacing the Coil and Shutter Assembly ...

Page 15: ...viewing window or focusing lens G Insert two rubber mounting gaskets only one gasket when replacing a focusing lens into the aperture H Put the back section of the mounting flange rubber was her and asbestos neoprene gasket in place on the faceplate and securely tighten the three mounting screws NOTE Make sure the red rubber washer between the gray fiber neoprene gasket and the back section of the...

Page 16: ...16 EN1C 0015SZ20 R0602 ...

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