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Honeywell C7076D Product Data page 3

Adjustable sensitivity ultraviolet flame detectors
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Interchangeability:
Models C7076A and C7076D are not interchangeable with
other flame detector models; they must be used with either
the R7476A or R7886 Dynamic Self-Check Ultraviolet
Amplifier.
Wiring Connections:
C7076A: Terminal block in front compartment of housing;
wire-clamp type, removable screws (terminal lugs can be
used).
Conduit fitting: 7/8 in. opening in housing to accommodate
1/2 inch flexible conduit; fitting must be water-tight to
meet NEMA 4 standards.
C7076D: Terminal block in front compartment of housing;
wire-clamp type, removable screws (terminal lugs can be
used).
Conduit fitting: 1/2 in. NPT tapped opening in bottom of
housing to accommodate conduit.
Plug-in Electronics Chassis:
Field-replaceable; plugs into octal socket in housing. Contains
ultraviolet sensing tube, shutter assembly, power supply,
solid state circuitry, sensitivity adjustment controls and
flame current meter jack. Keyed to housing to ensure
proper orientation.
Air Flow Requirements (C7076A only):
Purge Air: 0.7 SCFM (3.3 ml/sec) is required to maintain 4 in.
(102 mm) of differential pressure from the aspirator inlet to
the combustion chamber. An air flow of 3 SCFM
(14 ml/sec) is recommended.
Seal-off Air: 5 psig (34.5 kPa) maximum combustion chamber
pressure.
Housing:
C7076A: Meets NEMA 4 standards (water-tight and dust-tight,
indoor and and outdoor).
Construction: Aluminum and cadmium-plated steel.
Color: Light blue.
Front compartment contains terminal block; rear
compartment contains electronic chassis.
C7076D: Meets NEMA 7 requirements (explosion-proof).
Construction: Cast aluminum alloy.
Color: Light blue.
Front compartment contains terminal block; rear
compartment contains electronic chassis.
Mounting:
C7076A: Aspirator has 1-in. NPT tapping for mounting onto
sight pipe, and 3/8 in. NPT tapping for connecting to the air
supply.
Detector mounts on aspirator by means of a removable
piano-type hinge.
C7076A,D ADJUSTABLE SENSITIVITY ULTRAVIOLET FLAME DETECTORS
C7076D: Detector has 1-in. NPT tapping for mounting onto
sight pipe and two 5/16-18 UNC tapped holes for attaching
a bracket for additional security.
For allowable mounting positions, see Fig. 1.
Weight:
C7076A: 6.6 lb (3 kg).
C7076D: 17.6 lb (8 kg).
Dimensions: See Fig. 2.
Accessories:
118367A Swivel Mount.
W136A Test Meter (includes 117053 meter connector plug).
117053 Meter Connector Plug (for older W136A models).
Replacement Parts:
C7076A:
191002B Plug-in Electronics Chassis (without UV sensing
tube).
190971E Coil and Shutter Assembly (for all models except
100V model).
190971F Coil and Shutter Assembly (for 100V model).
190998A Aspirator Assembly.
191205 Pin and Chain.
191055A Cover Assembly for 120 Vac models.
191055B Cover Assembly for 220/240 models.
191203-767 Hinge.
191053 Ultraviolet Sensing Tube.
191050 Viewing Lens.
190999 grommet, silicone rubber for viewing lens.
191054 Gasket, silicone-rubber seal for front and rear
cover plates.
C7076D:
191002R Plug-in Electronics Chassis (without UV sensing
tube).
190971E Coil and Shutter Assembly (for all models except
100V model).
190971F Coil and Shutter Assembly (for 100V model).
191053 Ultraviolet Sensing Tube.
191050 Viewing Lens.
24400152-001 Lens Kit (consists of quartz window gasket
and gasket seal).
Approvals:
C7076A:
Underwriters Laboratories Inc. Listed (120V models only):
File No. MP268, Guide No. MCCZ.
Canadian Standards Association (CSA) Certified (120V
models only): File No. LR1620.
Factory Mutual Approved: Report No. FM26980.
C7076D:
Underwriters Laboratories Inc. Listed: File No. E34649,
Guide No. ZTSZ.
Industrial Risk Insurers Approvable.
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95-8269—1

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