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Minipeeper
Detectors
C7027A, C7035A, C7044A, C7927A
C7027A
C7044A
APPLICATION
The C7027A, C7035A, C7044A and C7927A Minipeeper
Ultraviolet Flame Detectors detect the ultraviolet radiation
emitted by combustion flames. The flame detectors are used
with Honeywell flame safeguard controls to provide flame
supervision for gas, oil, or combination gas-oil burners.
FEATURES
• C7027A, C7035A, and C7044A Flame Detectors are used
with RA890G devices or R7249A, R7290A, R7749B and
R7849A,B Amplifiers and the appropriate Honeywell
controls.
• C7927A is used with only the R7851B Flame Amplifier and
the 7800 SERIES controls.
Ultraviolet Flame
®
C7035A
C7927A
M33825
®
• C7044A may also be used with the following 50 Hz
Honeywell combustion controls/amplifiers:
- R4341/R7323
- R4343/R7323
- R4344/R7323
• C7027A/C7927A has an integral collar threaded (internal
1/2-14 NPSM) for mounting on a one-half-inch sight pipe.
• C7035A has an integral collar threaded (internal
1-11-1/2 NPSM) for mounting on a one-inch sight pipe.
• C7035A housing meets Underwriters Laboratories Inc.
requirements for rain tightness and complies with NEMA
enclosure standards, types 4 and 4X.
• C7044A mounts with a two screw bracket. The UV sensor
tube is enclosed in a stainless steel housing.
• C7044A has the capability of side or end viewing in flame
monitoring applications.
• Because of its compact size, the C7044A is particularly
suitable for blast tube mounting.
• Properly installed, the C7027A, C7035A and C7927 are
pressure rated for 5 psi.
• C7035A ultraviolet radiation sensor tube is field
replaceable.
• Two C7027A, C7035A or C7044A Flame Detectors can be
wired in parallel for difficult flame sighting installations.
(C7927cannot be used in parallel.)
• C7927A1016, C7027A1049, C7027A1064, C7027A1072
come with 1/2-in. spud connection for electrical wiring.
• C7927 is immune to x-ray testing.
Application ........................................................................
Features ...........................................................................
Specifications ...................................................................
Ordering Information ........................................................
Wiring (All Models-Fig. 9) ...............................................
Adjustments and Checkout ...............................................
Troubleshooting ................................................................ 12
Maintenance ..................................................................... 12
PRODUCT DATA
Contents
1
1
2
2
8
9
60-2026-16
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Summary of Contents for Honeywell Minipeeper C7035A
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Page 1: Table Of Contents
• Properly installed, the C7027A, C7035A and C7927 are emitted by combustion flames. The flame detectors are used pressure rated for 5 psi. with Honeywell flame safeguard controls to provide flame supervision for gas, oil, or combination gas-oil burners. • C7035A ultraviolet radiation sensor tube is field replaceable. -
Page 2: Specifications
TRADELINE® Catalog or price sheets for complete ordering number. If you have additional questions, need further information, or would like to comment on our products or services, please write or phone: 1. Your local Honeywell Environmental and Combustion Controls Sales Office (check white pages of your phone directory). 2. Honeywell Customer Care... - Page 3 ® MINIPEEPER ULTRAVIOLET FLAME DETECTORS ® C7035A Minipeeper Ultraviolet C7035A1080 has 10 foot (3 Meter) leadwire rated for 600°F (316°C). Flame Detector: Replacement Parts: 129464M Ultraviolet Sensing Tube, 0°F to 250°F Flame Detection:End viewing. (-18°C to +121°C). Ambient Operating Temperature Ratings: 0°F to 250°F 129464N Ultraviolet Sensing Tube, -40°F to +250°F (-18°C to +121°C), or -40°F to 250°F (-40°C to +121°C), (-40°C to 121°C).
- Page 4 Controls incorporating safe-start checks, and sensors leakage or diaphragm failure. and controls employing constant check means are available from Honeywell. See your Honeywell repre- sentative for specific information. 60-2026-16...
- Page 5 Examples of radiation sources (other than flame) that could 1. The C7027A, C7035A, C7044A and C7927 Flame actuate the detection system are: Detectors must be used with Honeywell flame safeguard controls (primaries, programmers, and 1. Ultraviolet Sources: burner management systems). Using with controls a.
- Page 6 ® MINIPEEPER ULTRAVIOLET FLAME DETECTORS Mounting a C7027A, C7927 or C7035A Mounting The Sight Pipe (Fig. 5) Thread one end of the pipe to fit the mounting collar on the Locate the Sight Pipe detector. Cut the pipe to the desired length (as short as practicable), and at an angle so it fits flush with the wall of the The location of the sight pipe is the most critical part of the combustion chamber.
- Page 7 ® MINIPEEPER ULTRAVIOLET FLAME DETECTORS Swivel Mount To facilitate proper sighting of the flame, a swivel mount C7027A, C7927 (OR C7035A) (part no. 118367A) is available. The swivel mount will require a 3/4 to 1/2 in. reducer and a 1/2 in. close nipple to mount a C7027A or C7927, or a 1 in.
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Page 8: Wiring (All Models-Fig. 9)
® MINIPEEPER ULTRAVIOLET FLAME DETECTORS WIRING (ALL MODELS—FIG. 9) CAUTION Equipment Damage Hazard. Can cause improper operation. 8-32 RHIS (EUROPEAN M-4) The blue leadwire must be connected to the F terminal SCREW (2) of the flame safeguard control subbase or terminal strip and the white to the G terminal (see Fig. -
Page 9: Adjustments And Checkout
The flame signal can be measured with a volt-ohmmeter can not be used in parallel.) such as the Honeywell W136A. To measure the flame current (signal), use a cable connector (part number 196146, included When using detectors rated for a minimum of 0°F (-18°C), limit with the W136A) in conjunction with the meter. - Page 10 The R7749B and R7849A,B; R7851B Amplifiers used with the stabilize. A maximum steady microamp or voltage reading is Honeywell BCS 7700 and 7800 SERIES controls, respectively, desirable. The flame signal must be above the minimum have a dc voltage flame signal output.
- Page 11 ® MINIPEEPER ULTRAVIOLET FLAME DETECTORS Table 1. Flame Signal. Minimum Acceptable Maximum Current Minimum Maximum Flame Plug-in Honeywell Flame Steady Current Expected Acceptable Voltage Detector Amplifier Safeguard Control (microamps) (microamps) Voltage (Vdc) (Vdc) C7027A, R7249A BC7000 + PM720 3.5 —...
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Page 12: Troubleshooting
1. Clean the viewing window and sight pipe (if used) when are encountered in the system, refer to Troubleshooting in the necessary. Remove the detector and use a soft, clean Instructions for the appropriate Honeywell flame safeguard cloth to remove accumulated contaminants from the control.