Honeywell C7061A1020, C7061A, C7061F1003, C7061F Product Handbook
1 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
EN1C-0015SZ20 R0602 2
DESCRIPTION
The C7061A1020 and C7061F1003 detector models are
identical except for housings.
Model C7061F detector is for use in installations requiring
explosion proof packaging. The housing is conform the EExd
IIC T6 classification. More details for the explosion proof
housing can be found in the chapter Standards and
Approvals.
The C7061F model has a 1-inch NPT tapping for mounting
onto a sight pipe. For allowable mounting positions of model
C7061A and model C7061F, see Page 9.
The terminal block on both models is of wire clamp type with
removable screws and is situated in the compartment of the
C7061. The UV cell contains an ultraviolet sensing tube,
shutter assembly, terminal block and magnifying lens.
The UV sensor can be mounted from the programmer/flame
switch up to a length of 300 m.
FEATURES
• Oscillating shutter interrupts ultraviolet radiation reaching
the UV Sensor 12 times per minute (when used with R7861
amplifier in combination with 7800 SERIES) to provide the
UV Sensor tube checking function. When used with the
R7061 amplifier in combination with R4348 flame switch,
the shutter 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 and quartz viewing
window are field replaceable.
• Two flame detectors can be wired in parallel to reduce
nuisance shutdowns in difficult flame sighting applications.
• A swivel mount is available to facilitate flame sighting.
• -40°C (-40°F) rated ultraviolet sensing tube is available.
• lncorporates UV Sensor tube checking feature; used with
R7061 and R7861 Dynamic Self-Check amplifiers.
• High pressure 50 psi (345 kPa) quartz viewing window,
magnifying lens and antivibration mount are available as
accessories.
• Housing meets IP67 enclosure standards.
• C7061 F only: explosion-proof housing, meets EExd IIC
T6 classification.
• Protective heat block built into mounting flange.
ORDERING INFORMATION
When ordering specify:
• Complete model number.
Order separately:
• R7061 Dynamic Self-Check Ultraviolet Amplifier.
• R7861A Dynamic Self-Check Ultraviolet Amplifier.
• Replacement parts, if desired.
• Accessories, if desired
• Flame safeguard control
GENERAL
3 EN1C-0015SZ20 R0602
TECHNICAL DATA
SPECIFICATION
Specification
Models
C7061A: Self checking UV flame detector in standard
housing.
C7061F: Self checking UV flame detector in explosion proof
housing. Designed for use with either,
R7061 Dynamic Self-Check Ultraviolet amplifier and
• R4348 Flame Switch
or with,
R7861A Dynamic Self-Check Ultraviolet amplifier and,
• 7800 SERIES Burner Programmers
Ambient Operating temperature ratings
C7061A: -40°C to +70°C (-40°F to +160°F)“(derate ambient
1°F for every 13°F of aspirator temperature over
160°F).
C7061F: -20°C to +70°C (-22°F to +160°F)
Storage temperature ratings
• -51°C to +85°C (-60°F to +185°F)
Voltage and Frequency
C7061A1004 120 VAC, 50/60 Hz
C7061A1020 115/230 VAC, 50/60 Hz
C7061F1003 115/230 VAC, 50/60 Hz
The System operates correctly at a nominal voltage (-15%,
+10%), 50/60 Hz.
Flame Signal
Measured at the flame current meter jack.
C7061 Detector: 1.4 to 5.5 micro amps (nominal).
R7061A Amplifier: 2.5 to 5.5 micro amps (nominal).
R7861A Amplifier: 1.25 to 5.0 Volts (On keyboard
display module).
Flame Signal amplifier
R7061A Dynamic Self-Check Ultraviolet amplifier
R7861A Dynamic Self-Check Ultraviolet amplifier
(Order separately)
lnterchangeability
Models C7061A and C7061F are not interchangeable with
other flame detector models.
Shutter frequency
0.2 Hz, nominal (when used in combination with 7800 SERIE). Interrupts the line-of-sight of the detector about 12 times
per minute to provide self-checking. Any malfunction in the
flame detection system results in a safety shutdown. 1Hz
nominal when used with R4348 in combination with R7061
amplifier.
Pressure rating of quarz viewing window
C7061A: 138 kPa (20 psi) 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
are separate to provide heat insulation and seal-Off.
Enclosure
C7061A: Meets IP66 enclosure requirements (indoor,
outdoor protection; rain-tight, dust-tight, hosedirected water). “Optional water jacket available.
C7061F: IP65 according to DIN 40050
Weight
C7061A: 3.3 kg (7.3 Ib)
C7061F: 6.3 kg (13.9 Ib)
Mounting and orientation
C7061A : Mounting flange with 3/4 inch NPT internal threads
for attaching to sight pipe.
C7061F: Mounting flange with 1 inch NPT internal threads
for attaching to sight pipe.
For allowable mounting positions of model C7061A and F,
see Page 9.
Wiring Connections
C7061A1004:
NEC Class 1 color coded leadwire.
Length: 8 ft (2.4m).
C7061A1020:
Terminal block
Threaded leadwire opening in faceplate:
1/2-14 NPSM internal threads for attaching conduit.
One brass cable gland standard with housing.
For C7061F only:
Terminal block:
Terminal block inside the housing, wire clamp type,
removable screws (terminal lugs can be used).
Cable entry holes:
One brass cable gland Ex classification: EExdII C, is
standard provided in the housing.
Inner sheath diameter 6 to 12 mm
Outer sheat diameter 8.5 to 16 mm
Tightening torque:
• cable gland into rear cover plate: 20 Nm
• cap into cable gland: 3 Nm
Serviceability
Field replaceable viewing window and ultraviolet sensing
tube, coil and shutter assembly.
Maximum cable length
300 meter between sensor and amplifier
Design life
Ultraviolet sensing tube: limited life, see sections
Troubleshooting and Service.
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STANDARDS AND APPROVALS
Models C7061A and F
C7061A and F Ultraviolet Flame Detector conform with
following EC-Directives:
• Gas Appliance Directive (90/396/EEC).“according to
European Standard:“EN298 approved with R7861 and
R7061 flame amplifiers.
• Low Voltage Directive (73/23/EEC)“according to European
Standard:“EN60730-2-5
• Electro Magnetic Compatibility Directive (89/336/
EEC)“according European Standards:“EN55011 class B
regarding emission.“EN50082-2 industrial level regarding
immunity.
Model C7061F
In addition to above information, C7061F conforms with:
• Explosive Atmospheres Directive (94/9/EC)“according to
European Standards:“EN50014“EN50018“EN50019
Other approvals (C7061A only)
Underwriters Laboratories Inc. Listed.
Canadian Standards Association Certified: Master File
LR95329-1.
Factory Mutual Approved: 14740.01.
lndustrial Risk Insurers Acceptable.
REPLACEMENT PARTS AND ACCESORIES
Replacement parts for model C7061A and C7061F
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 C7061F
118367A Swivel mount.
118369 Bushing, galvanized iron, with 3/4 inch NPT
internal threads on one end and 1 inch NPT
external threads on the other end. For adapting a
detector with 1 inch NPT internal threads (for
mounting) to a 3/4 inch sight pipe, or to the pipe
nipple and tee for connecting an air supply.
120934 Mounting Flange, aluminum, with 3/4 inch NPT
internal threads for attaching to sight pipe.
124198 Mounting Flange, aluminum, with 1 inch NPT
internal threads for attaching to sight pipe.
123539 Antivibrtation Mount.
124204 Quartz Focusing Lens, rated for 20 Psi (138 kPa);
for increasing the detector-sensed ultraviolet
radiation.
Accessories for model C7061A
122748 Quartz Viewing Window, rated for 50 Psi (345 kPa).
190105 Water Jacket.
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DIMENSIONAL DRAWING
Fig. 1. Dimensional drawing C7061A in inches (mm)
Fig. 2. Dimensional drawing C7061F in mm
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