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Honeywell Lr953291 Manual

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    							 1 EN1C-0015SZ20 R0314
    C7061 A/F
    The  C7061A  is  a  dynamic  self-checking flame detector  for 
    sensing  the  ultraviolet  radiation  generated  by  the  combus-
    tion 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 
    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.
    model C7061F
    Description ..................................................................... 2
    Features ......................................................................... 2
    Orderdering information ................................................. 2
    Specification................................................................... 3
    Standards and approvals...............................................4
    Replacement parts and accessories ..............................4
    Dimensional drawing ...................................................... 5
    Planning the installation................................................. 6
    Installation ...................................................................... 8
    Wiring ........................................................................... 10
    Adjustement and checkout ........................................... 12
    Troubleshooting............................................................ 13
    ATEX certificate INERIS 03ATEX0158X......................16 
    model C7061A       
    							EN1C-0015SZ20 R0314 2
    The  C7061Axxxx  and  C7061F1xxx  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 
    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.
    Oscillating shutter interrupts ultraviolet radiation reach-
    ing 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 shut-
    ter 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 applica-
    •  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 
    •  Housing meets IP67 enclosure standards.
    •  C7061 F only: explosion-proof housing, meets EExd IIC 
    T6 classification.
    •  Protective heat block built into mounting flange.
    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 
    							 3 EN1C-0015SZ20 R0314
    C7061A: Self  checking  UV flame detector  in  standard 
    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 / C7061A1079 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 jac k.
    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 
    Flame Signal amplifier
    R7061A  Dynamic Self-Check Ultraviolet amplifier
    R7861A  Dynamic Self-Check Ultraviolet amplifier
    (Order separately)
    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. 
    1  Hz  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
    C7061A:  see figure 1.
    C7061F: see figure 2.
    Construction: cast-aluminum cover. Color: 
    Mounting flange (with  heat  block)  and  faceplate  are  sepa-
    rate to provide heat insulation and seal-Off.
    Meets requirements (explosion-proof): EEx d IIC T6
    Construction: cast-aluminum Cover, Ineris AD4320001 .
    Color: Violet.  Mounting flange (with  heat  block)  and  face-
    plate are separate to provide heat insulation and seal-Off.
    C7061A:  Meets IP66 enclosure requirements (indoor, 
    outdoor protection; rain-tight, dust-tight, 
    hose-directed water). 
    Optional water jacket available.
    C7061F:  IP65 according to DIN 40050
    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
    NEC Class 1 color coded leadwire.
    Length: 8 ft (2.4m).
    C7061A1020 and C7061A1079:
    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, remov-
    able screws (terminal lugs can be used).
    Cable entry holes:
    One brass cab le 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
    Field  replaceable  viewing  window  and  ultraviolet  sensing 
    tube, coil and shutter assembly.
    Maximum cable length
    30-50m between sensor and amplifier, depending on local 
    conditions (presence of noise, parallel cables, etc)
    Design life
    Ultraviolet  sensing  tube:  limited  life,  see  sections Trouble-
    shooting and Service. 
    							EN1C-0015SZ20 R0314 4
    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 ampli-
    •  Low Voltage Directive (73/23/EEC)
    according to European Standard:
    •  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:
    EN50019•  ATEX (INERIS 03ATEX0158X) housing model AD4320001/2 
    Other approvals (C7061A only)
    Underwriters Laboratories Inc. Listed.
    Canadian  Standards  Association  Cer tified: Master  File 
    Factory Mutual Approved: 14740.01.
    lndustrial Risk Insurers Acceptable.
    Replacement parts for model C7061A and C7061F
    129464M  Uttraviolet Sensing Tube.
    129464N  Ultraviolet Sensing Tube; for -40°F (-40°C) opera-
    tion (standard).
    190971B Coil and Shutter Assembly.
    Replacement parts for model C7061A
    114372 Quartz  Viewing  Window;  rated  for  20  Psi  (138 
    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 inter-
    nal 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 ultravio-
    let radiation. Included in C7061A1079 and C7061F1xxx.
    Accessories for model C7061A
    122748 Quartz  Viewing  Window,  rated  for  50  Psi  (345 
    190105  Water Jacket. 
    							 5 EN1C-0015SZ20 R0314
    Fig. 1. Dimensional drawing C7061A in inches (mm)
    Fig. 2. Dimensional drawing C7061F1xxx in mm     
    							EN1C-0015SZ20 R0314 6
    Proper flame detector application is the back of a safe and 
    reliable flame safeguard  installation.  Refer  to  the  burner 
    manufacturer’s instructions as well to those included here.
    Follow all instructions carefully.
    1.  Do  not  connect  these  detectors  to  non-Hon-
    eywell manufactured controls (primaries, pro-
    grammers,  multiburner  systems,  and  burner 
    management  systems).  Unsafe  conditions 
    could result.
    2.  Disconnect  power  supply  before  beginning 
    installation  to  prevent  electrical  chock  and 
    equipment  damage.  More  than  one  discon-
    nect may be involved.
    3.  All  wiring  must  be  NEC  Class  1  (line  volt-
    4.  Voltage  and  frequency  of  the  power  supply-
    connected  to  this  detector  must  agree  with 
    the values marked on the detector.
    5.  Sight  the  detector  so  it  does  not  respond  to 
    ignition spark.
    6.  On  multiburner  installations,  each  detector 
    must respond only to the flame of the burner 
    it is supervising.
    Do  not  connect  more  than  two C7061A/F flame 
    detectors in parallel.
    Basic Requirements
    The  combustion  flames of  most  carbon-based  fuels  emit 
    sufficient ultraviolet radiation to enable the C7061A/F Solid 
    State (Purple Peeper) ultraviolet flame detector to prove the 
    presence  of  a flame in  a  combustion  chamber. The  detec-
    tor mounted outside the combustion chamber. Its mounting 
    flange or union is threaded to one end of a sight pipe inserted 
    through the wall of the combustion chamber. The ultraviolet 
    sensing tube in the flame detector sights the flame through 
    the pipe.
    When  a flame is  present,  the  UV  tube  in  the  C7061A/F 
    senses the ultraviolet radiation emitted. The C7061A/F pro-
    duces a signal that is sent to the amplifier in the flame safe-
    guard control. The amplified signal pulls in the flame relay in 
    the control to allow proper operation of the system.
    Because it is necessary for the UV sensing tube to actually 
    see  the flame,  it  is  best  to  locate  the  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  tempera-
    ture will remain within the specified ambient operating tem-
    perature ratings.
    For  the  C7061A/F,  to  keep  the  detector  temperature  within 
    specifications.  If  the  temperature  rating  is  exceeded,  the 
    introduction of cooling air will be necessary.
    2. Vibrations
    Do  not  install  the  detector  where  it  could  be  subject  of 
    excessive vibration; it shortens the life of the electronic com-
    ponents. Vibrations  with  a  magnitude  greater  than  1g  will 
    require an anti-vibration mount to cushion the detector.
    3. Clearance
    Make sure there will be enough room to remove the cover of 
    the detector for servicing.
    Radiation sour ces other than flame
    Examples  of  radiation  sourses,  other  than  flame,  which 
    could actuate the detection system:
    Ultraviolet sources
    •  Radiant surfaces above 1200°C (2200°F).
    •  Sparks from ignition transformers and welding arcs.
    •  Gas lasers
    •  Sun lamps
    •  Halogen lamps
    •  Germicidal lamps
    •  lncandescent lamps held close to the sensing tube
    •  Filament above 1200°C (2200°F).
    Gamma ray and X-ray sources
    •  Diffraction analyzers
    •  Electron microscopes
    •  Radiographic X-ray machines
    •  High voltage vacuum switches
    •  High voltage condensers
    •  Radioisotopes
    Except under very unusual circumstances, none of these
    sources,  except  a  radiant  surface  or  ignition  spark,  would 
    be  present  in  or  near  the  combustion  chamber. The  detec-
    tor may respond to a radiant surface at a temperature above 
    1200°C (2200°F) if both of the following conditions are pres-
    ent the surface represents a  significant percentage of detec-
    tor’ s field of vie w.
    If  the  temperature  or  a  radiant  surface  causes  the  flame 
    relay  (in  the  flame safeguard  control)  to  pull  in,  re-aim  the 
    sight  pipe  so  the  detector  views  a  cooler  area,  or  the  sen-
    sitivity  of  the  detector  decreases.  lgnition  sparks  is  a  rich 
    source of ultraviolet radiation.   
    							 7 EN1C-0015SZ20 R0314
    When installing the detector, make sure it does 
    not respond to ignition spark.
    Single burner requirements
    The  detector  must  have  an  unobstructed  view  of  the flame 
    it  is  supervising  under  all  firing  conditions. This  implies  a 
    proper  sighting  angle  and  the  minimization  of  screening 
    Sighting angle
    The  first 30  percent  of  a  flame (the  root)  radiates  the  most 
    intense  ultraviolet  energy.  The  low  angle  sighting  permits 
    the detector to view a greater depth of the flame root, thus 
    reducing the effects of irregularities in the flame pattern. The 
    best sighting angle is nearly parallel to the axis of the flame, 
    as shown in Figure 3.
    NOTE:   When possible, it is desirable to tilt the detector and 
    sight pipe downwards to prefent the build up of soot 
    in the pipe or on the viewing lens.
    In  most  installations,  the  detector  will  need  to  respond  to 
    the,  pilot flame alone,  then  to  the  pilot  and  main  burner 
    flame together  and finally to  the  main  burner flame alone. 
    The  detector  must  meet  all  sighting  requirements  which 
    1.  Pilot flame alone - the smallest pilot flame that can be 
    detected must be capable of reliable ignition the main 
    2.  Pilot and main burner flame together 
    - the detector must 
    sight the junction of both flames.
    3.  Main burner flame alone 
    - the detector must sight the most 
    stable part of the flame for all firing rates
    Screening effects
    Smoke,  fuel  mist,  dirt  and  dust  are  masking  agents  that 
    absorb  ultraviolet  radiation  from  the flame.  They  create 
    a  screen  that  reduces  the  amount  of  ultraviolet  radiation 
    reaching the detector and may cause flame signal deteriora-
    tion resulting in a shutdown. The adverse affects of Screen-
    ing may be minimized by proper burner adjustment, increas-
    ing  the  detector  viewing  area  (shorten  sight  pipe  and/or 
    increase its diameter).
    Multifuel requirements
    In addition to meeting the requirements for a single burner, 
    a  multiburner  installation  also  requires flame discrimina-
    Flame  discrimination  may  be defined as  the  location  of  all 
    flame detectors  such  that  each  detector  responds  only  to 
    the flame(s) produced by the burner it is supervising.
    Multiburner requirements
    In multiple burner systems, not every detector can be posi-
    tioned  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 multi-
    level 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 possible view of 
    all other flames.
    Figure  4.  illustrates  a  critical  detector  application  Problem 
    requiring flame discrimination.  Flame  discrimination  is 
    accomplished  by  detector  1  by  reducing  its  sensitivity  until 
    the flame relay  (in  the flame safeguard  control)  does  not 
    respond  to flame 2.  Note  that  detector  1  is  aimed  at  the 
    root of Flame 1 where UV (ultraviolet) energy is most inten-
    sive. Although  it  sights flame 2  is  not  aimed  at  the  root  of 
    flame 2. The  sensitivity  of  detector  1  is  reduced  to  a  point 
    that ensures maximum sensitivity to flame 1 while rejecting 
    flame 2. similarly, detector 2 is adjusted to ensure maximum 
    sensitivity to flame 2 while rejecting flame 1.
    If  the  sensitivity  control  on  a  detector  is  set  at  its  minimum 
    position and flame discrimination cannot be achieved, insert 
    an  orifice plate  in  the  sight  pipe.  An  orifice of  the  proper 
    diameter  will  reduce  the  ultraviolet  radiation  reaching  the 
    detector  so  that  the  sensitivity  can  be  adjusted  to  effect 
    flame discrimination.
    P arallel flame detector s
    Two C7061A/F detectors can be connected in parallel to the 
    same flame signal amplifier and  still  provide  independent 
    sensitivity adjustment. This capability is particular useful for 
    multiburner, multifuel applications.
    Shifting flame patterns, commonly encountered on burners 
    with  wide  turndown  ratios,  may  require  parallel  detectors 
    to  prove  the flame at  the  highest  and  lowest firing  rates. 
    In this case, one detector supervises the pilot (interrupted) 
    and both detectors supervise the main burner flame. During 
    the  main  burner  “run”  period,  either  detector  is  capable  of 
    maintaining system operation.
    In  addition  to  assuring  more  reliable flame detection,  par-
    allel  detectors  facilitate  maintenance  during  burner  opera-
    Each detector can be removed in turn without shutting down 
    the supervised burner. However, a flame simulating failure
    occurring  in  the flame signal amplifier or  in  either  detector 
    will cause a shutdown.Fig. 3. Sighting angle
    Fig. 4. Critical detector application problem      
    							EN1C-0015SZ20 R0314 8
    1. lnstaller must be a trained, experienced flame 
    safeguard control serviceman.
    2.  Disconnect  power  supply  before  beginning 
    installation  to  prevent  electrical  shock  and 
    equipment damage.
    3.  All  wiring  must  comply  with  applicable  local 
    electrical codes, ordinances and regulations.
    4.  Voltage  and  frequency  of  power  supply  con-
    nected  to  this  detector  must  agree  with  the 
    values marked on the detector.
    6.  On  multiburner  installation,  each  detector 
    must respond only to the flame(s) producted 
    by the burner it is supervising.
    7.  Do  not  connect  more  than  two  detectors 
    in  parallel  to  a  single  R7061  or  R7861A 
    Dynamic Self-Check Ultraviolet amplifier.
    8.  Perform  all  required  adjustments  and  check-
    out tests after installation is complete.
    lnstall the Sight Pipe
    After  you  have  determined  the  location  and  sighting  angle, 
    select the sight pipe. A black iron pipe with a diameter of at 
    least 1-1/2 in. (38.1 mm) is recommended. Do not use stain-
    less steel or galvanized pipe because they reflect ultraviolet 
    radiation internally and complicate aiming the pipe.
    Sight pipes with diameters 2 to 3 in. (51 to 76 mm) produce 
    better  results  for  horizontal  rotary  burners,  which  require 
    wide  viewing  angles.  A  wide  viewing  angle  can  also  be 
    obtained by using a short sight pipe.
    Prepare Hole in Wall of Combustion Chamber
    Cut  or  drill  a  hole  of  the  proper  diameter  for  the  sight  pipe 
    in the wall of the combustion chamber at the selected loca-
    Flare  the  hole  to  leave  room  for  small  adjustments  of  the 
    sighting  angle. The  taper  of  the  hole  should  be  about  1  in. 
    for every 3 in. (25 mm for every 76 mm) of Wall thickness.
    Mount Sight Pipe
    Thread  one  end  of  the  pipe  to  fit the  mounting  flange, 
    union,or  required  coupling.  Cut  the  pipe  to  the  desired 
    length (as short 
    as practical) and at an angle so it fits flush  with 
    the  wall  of 
    the  combustion  chamber. Tack  weld  the  pipe  to 
    the wall in a trial position. Do not weld the sight pipe perma-
    nently  in  place  until  after  completing  the  Adjuctments  and 
    lnstall Fittings
    In  some  cases,  the  sight  pipe  does  not  directly  fit the 
    C7061A/F  mounting flange or  union. Also,  it  may  be  desir-
    able  or  necessary  to  ventilate  the  sight  pipe. You  may  also 
    want to use a swivel mount or an antivibration mount. Each 
    of these cases may require additional fittings.
    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  sight  pipe  to  cool  the 
    detector  or  to  clear  a  viewing  path  through  UV  radiation 
    attenuating material.
    For a negative pressure combustion chamber, drilling a few 
    holes in the section of the sight pipe outside of the combus-
    tion  chamber  will  allow  air  at  atmospheric  pressure  to flow 
    through  the  sight  pipe  and  into  the  chamber. A  perforated 
    pipe nipple between the sight pipe and the detector can also 
    be used.
    For  a  positive  pressure  combustion  chamber,  connect  a 
    supply  of  pressurized  air  from  the  burner  blower  to flow 
    through  the  sight  pipe  and  into  the  chamber. The  air  pres-
    sure must be greater than the chamber pressure.
    Swivel Mount (C7061A only)
    To  facilitate  proper  flame sighting,  use  part  no.  118367A 
    Swivel  Mount  (not  supplied). The  swivel  mount  requires  a 
    reducer  of  the  proper  size  to  mount  it  onto  the  sight  pipe. 
    It  also  requires  a  one-inch  close  nipple  for  mounting  to 
    a  C7061  with  a  one-inch  connector.  (For  118367A  Swivel 
    Mount mounting details, refer to form 60-0361).
    Antivibration Mount
    The detector withstands normal burner vibration. If the vibra-
    tion  is  excessive,  part  no.  123539  Antivibration  Mount  is 
    available. (For  mounting  details,  see  form  60-0361). If  you 
    use this mount, install it before positioning and sighting the 
    Mount the Detector 
    Mount the detector onto the sight pipe, reducer, or other  fit-
    ting. The C7061A/F Self-Checking  flame detectors incorpo-
    rate an oscillating shutter mechanism and, therefore, require 
    special consideration for mounting positions other than ver-
    tically sighting downward or upward, as illustrated in Fig. 6. 
    The  C7061A/F  has  notch  and  arrow  indicators  (see  Fig. 7 
    and  9)  on  the  faceplate  to  facilitate  mounting  in  positions 
    other than those shown in Fig. 7. The notch and arrow must 
    be vertically aligned with the notch in the up position and the 
    arrow  pointing  downward  (see  Fig. 7). The  C7061A/F  must 
    be mounted with the conduit opening located approximately 
    45 degrees below the horizontal (see Fig. 7).
    Fig. 5. Typical mounting of C7061A/F    
    							 9 EN1C-0015SZ20 R0314
    The  notch  and  arrow  on  the  faceplate  must  be 
    aligned in a vertical plane with the notch up and 
    the arrow pointing down.
    The housing must be mounted with the conduit 
    opening  approximately  45°  below  horizontal 
    (see Fig. 7)
    To mount a C7061A (Fig. 8):
    A  The mounting flange is in two pieces. Loosen (but do not 
    remove) the three screws holding the flange together. B 
    Slightly  rotate  the  detector  so  the  slots  in  the  back  sec-
    tion  of  the  mounting flange clear  the  screws  in  the  front 
    section; 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.
    The rivit on on the faceplate must be at the top 
    (see figure 9). The C7061F can be mounted with 
    increments of 120°.
    The C7061F has a rivet on the blank alurninium holder. The 
    cell must be positioned so that this rivet is at the top of the
    installed  cell.  In  certain  applications  the  sensor  must  be 
    turned in order accoomplish this.
    To turn the C7061 (Figure 9).
    A  Loose  the  3  screws  between  the  pipe  connection  and 
    bottom part of.
    B  Turn the C7061F in the most favorable position.
    C  Tighten the screws securely.
    Fig. 6. Vertical mounting of C7061A/F
    Fig. 7. C7061A mounting Positions Fig. 8. Mounting the C7061A detector
    Fig. 9. Mounting the C7061F1xxx detector           
    							EN1C-0015SZ20 R031410
    When using a C7061A/F with an R7061 or R7861 
    Dynamic  Self-Check amplifier,  be  careful  not  to 
    short  the  white  shutter  lead  wires  together  (by 
    wiring incorrectly, leaving an incorrect jumper wire, 
    or  stripping  the  insulation  too  muc
    h  so the  bare 
    lead wires can touch).
    If  the  shutter  leadwires  are  shorted  during  the 
    operation,  the amplifier can  be  permanently 
    damaged and nonoperative.
    1.  All  wiring  must  comply  with  applicable  local 
    electrical codes, ordinances, and regulations. 
    Use NEC class 1 wiring.
    2.  Keep the flame signal lead wires as short as 
    possible  from  the flame detector  to  the  ter-
    minal  strip  or  wiring  sub  base.  Capacitance 
    increases with lead wire length, reducing the 
    signal  strength.  The  maximum  permissible 
    lead wire length depends on the type of lead 
    wire and conduit type and diameter. The ulti-
    mate  limiting  factor  in flame signal  lead  wire 
    length is the signal current.
    3.  The  C7061A1004  detector  has  color-coded 
    plastic-insulated, no. 18 lead wires, 8 ft (2.4m) 
    long,  rated  for  105°C  (221°F).  These  wires 
    must be run in a conduit.
    4.  If the lead wires are not long enough to reach 
    the  terminal  strip  or  wiring  sub  base,  make 
    the required splices in a junction box.
    5.  If  splicing  is  necessary,  use  moisture-resis-
    tant  no.  14  wire  suitable  for  at  least  75°C 
    (167°F)  if  the  detector  is  used  with  a flame 
    safeguard  primary  control,  or  at  least  90°C 
    (194°F  )  if  used  with  a flame safeguard  pro-
    gramming control. 
    6.  For  high  temperature  installations,  use  Hon-
    eywell 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 connections
    Do not run the  flame detector wiring in the same 
    conduit  with  high  voltage  ignition  transformer 
    Connecting Detectors in Parallel
    For a  flame  that is  difficult  to sight, using two parallel C7061 
    flame  detectors reduces nuisance shutdowns. If only one of 
    the parallel detectors loses the  flame signal, the other indi-
    cates the presence of the  flame and keeps the burner run-
    ning.  If  two  parallel  C7061A  setectors  are  used,  a  flame-
    simulating  failure  in  either  detector  causes  the  burner  to 
    shut down. Two C7061A setectors can be connected in par-
    allel to the same terminals on 120 volt  flame safeguard con-
    When  using  the  C7061  in  conjunction  with  an 
    R4348 flame relay at 230VAC, parallel sensores 
    can not be used.
    To  avoid  exceeding  the  rating  of  the  solid-state  shutter 
    switch  in  the  R7861 flame signal amplifier,  do  not  connect 
    more than two C7061A detectors in parallel.
    Voltage  and  frequency  rating  of  the  C7061A 
    must match the power supply of the flame safe-
    guard control.
    Fig. 10_1.  Wiring diagram for C7061A1004 detectors with 
    7800 SERIES Flame Safeguard controls with shut-
    ter drive circuitry.
    Fig. 10_2. Wiring diagram for C7061A1004 detector with 
    R4348 Flame Safeguard controls with shutter drive 
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