Honeywell C7027A Product Data
C7027A, C7035, C7044A, C7927A
Minipeeper® Ultraviolet Flame Detectors
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 R7249A, R7290A, R7749B and R7849A,B
Amplifiers and the appropriate Honeywell controls.
C7035A
C7927A
PRODUCT DATA
• C7044A may also be used with the following 50 Hz
Honeywell combustion controls/amplifiers:
— R4341/R7323
— R4343/R7323
— R4344/R7323
• C7027A 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 their compact size, the C7027A and
C7044A are particularly suitable for blast tube
mounting.
• Properly installed, the C7027A and C7035A 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.
• C7927A is used with only the R7851B Flame Amplifier
and the appropriate Honeywell controls.
• C7927A has an integral collar threaded (internal
1/2-14 NPSM) for mounting on a one-half inch sight
pipe.
® U.S. Registered Trademark
Copyright © 2000 Honeywell • All Rights Reserved
Contents
Application ........................................................................ 1
Features ........................................................................... 1
Specifications ................................................................... 2
Ordering Information ........................................................ 2
Installation ........................................................................ 4
Wiring (All Models—Fig. 10) ............................................. 8
Adjustments and Checkout .............................................. 9
Troubleshooting ................................................................ 12
Maintenance ..................................................................... 12
60- 2026- 10
MINIPEEPER® ULTRAVIOLET FLAME DETECTORS
SPECIFICATIONS
4 (102)
3-1/2 (89)
COLLAR WITH 1/2-14 NPSM
INTERNAL THREADS
1
C7027A1064 HAS 24 FOOT (7.32 METER) LEADWIRES.
C7027A1114 HAS 44 IN. (1.118 M) LEADWIRES WITH
22 IN. (558 MM) FLEXIBLE CONDUIT.
MODELS AVAILABLE WITH SPUD CONNECTOR (1/2-14 NPSM INTERNAL
2
THREADS) INSTEAD OF CLAMP TYPE CONNECTOR.
C7027
Fig. 1. Installation dimensions of C7027A in in. (mm).
C7027A Minipeeper® Ultraviolet Flame Detector:
Ambient Operating Temperature Ratings:
(-18°C to 102°C), or -40°F to 215°F [-40°C to +102°C),
depending on model.
Maximum Pressure Rating:
Mounting:
Collar with 1/2-14 NPSM internal threads for
mounting on a 1/2 in. sight pipe.
Wiring Connections:
NEC Class 1 leadwires, rated for 221°F (105°C).
(C7027A1064 has 24 ft [7.32 m] leadwires.) Rear of
detector has a clamp type connector for 1/2 in. flexible
metallic conduit. (Models are available with 1/2 in.
internally threaded spud connector instead of the
clamp). C7027A1114 has 44 in. (1.118 m) leadwires and
22 in. (558 mm) flexible conduit.
5 psi (34.5 kPa).
Two 6 ft [1.83 m], color-coded,
6 FOOT (1.83 METER)
LEADWIRES (2)
2
1-1/16
(27)
0°F to 215°F
1
M1943D
Dimensions:
Replacement Part:
See Fig. 1.
129685 Flange Gasket.
NOTE: The ultraviolet radiation sensing tube is not field
replaceable.
Accessory:
136733 Heat Block, laminated plastic, insulating the flame
detector from sight pipe tempera tures up to 266°F (130 °C),
1/2-14 NPSM external threads on one end and 1/2-14
NPSM internal threads on the other end (see Fig. 8).
Included with C7027A1080.
390427B Bushing, for mounting to 3/8 in. sight pipe. Included
with C7027A1080.
4-1/8 (105)
31/32
(25)
2
M1945C
COLLAR WITH
1–11-1/2 NPSM
INTERNAL
THREADS
INSERTION DEPTH
1
2
3
1
2-5/8 (67)
DIN APPROVED C7035A1064 HAS 1-11 BSP.P1 INTERNAL MOUNTING THREADS.
DIN APPROVED C7035A1064 HAS 1/2-14 BSP-F INTERNAL MOUNTING THREADS.
C7035A1056 HAS 12 FOOT (3.66 METER) LEADWIRES.
2 (51)
1-3/16
(30)
6 FOOT
[1.83 METER]
LEADWIRES (2)
C7035
1/2-14 NPSM
INTERNAL THREADS
1-1/2
(38)
3
Fig. 2. Installation dimensions of C7035A in in. (mm).
ORDERING INFORMATION
When purchasing replacement and modernization products from your TRADELINE® wholesaler or distributor, refer to the
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 Home and Building Control Sales Office (check white pages of your phone directory).
2.
Home and Building Control Customer Relations
Honeywell, 1885 Douglas Drive North
Minneapolis, Minnesota 55422-4386 (800) 328-5111
In Canada—Honeywell Limited/Honeywell Limitée, 35 Dynamic Drive, Scarborough, Ontario M1V 4Z9.
International Sales and Service Offices in all principal cities of the world. Manufacturing in Australia, Canada, Finland, France,
Germany, Japan, Mexico, Netherlands, Spain, Taiwan, United Kingdom, U.S.A.
60-2026—10 2
MINIPEEPER® ULTRAVIOLET FLAME DETECTORS
C7035A Minipeeper® Ultraviolet Flame Detector:
Flame Detection:
Ambient Operating Temperature Ratings:
(-18°C to +121°C), or -40°F to 250°F (-40°C to +121°C),
depending on model.
Maximum Pressure Rating:
Mounting:
mounting on a 1 in. sight pipe. (The DIN approved
C7035A1064 has 1-11 BSP.P1 threads.)
Wiring Connections:
Class 1 leadwires rated for 302°F (150°C). One model is
available with 12 ft. (3.66 m) leadwires. Rear of detector
has 1/2-14 NPSM internal threads for connecting to a
conduit. The DIN-approved C7035A1064 has 1/2-14
BSP-F threads.
C7035A1056 has 12 ft (3.66 m) leadwires.
C7035A1080 leadwire is rated for 600°F (204°C).
End viewing.
0°F to 250°F
5 psi (34.5 kPa).
Collar with 1-11-1/2 NPSM internal threads for
Two 6 ft. [1.83 m], color-coded NEC
6 FOOT [1.83 METER]
LEADWIRES (2)
Dimensions:
See Fig. 2.
Replacement Parts:
129808 Flange Gasket.
129464M Ultraviolet Sensing Tube, 0°F to 250°F (-18°C to
+121°C).
129464N Ultraviolet Sens in g Tube, -40°F to +250°F (-40°C to
121°C).
C7027A AND C7035A:
Approvals:
Underwriters Laboratories Inc. listed: File No. MP268.
Canadian Standards Association certified: Master Report LR
95329-1.
Factory Mutual approved.
Industrial Risk Insurers acceptable.
DIN approved models: C7027A1056, C7035A1049,
C7035A1064.
Accessory:
118367A Swivel Mount; provides adjustable
positioning of the C7027A or C7035A.
MOUNTING BRACKET
3/8
(10)
7/8
(22)
3-5/8 (92)
Fig. 3. Installation dimensions of C7044A in in. (mm).
C7044A Minipeeper® Ultraviolet Flame Detector:
Flame Detection:
side or end viewing. Side viewing is 1/8 as sensitive as end
viewing.
Mounting:
secured by two 8-32 RHIS (European M-4) screws (not
included).
Wiring Connections:
Class 1 leadwires. Rear of detector has a clamp type
connector for 1/2 in. flexible metallic conduit.
Dimensions:
Housing has two openings to permit either
Bracket (included in 4074BVK Bag Assembly),
Two 6 ft. (1.83 m) color-coded NEC
See Fig. 3.
9/16
(14)
1/2
(13)
C7044
1-27/64
(36)
M1944B
C7927A Minipeeper® Ultraviolet Flame Detector:
Ambient Operating Temperature Ratings:
C7927A1016 (U.S. Version): -40°F to +200°F (-40°C to
+93°C).
C7927A1008 (European Version): -4°F to +140°F
(-20°C to +60°C).
Storage Temperature Rating:
(-28°C to +49°C).
Maximum Pressure Rating:
Mounting:
Collar with 1/2-14 NPSM internal threads for
mounting on a 1/2 in. (13mm) sight pipe.
Wiring Connections:
Two four-foot (1.2 meter) color-coded
NEC Class 1 leadwi res . Rear of detector has a cla mp -type
connector for 1/2 in. (13mm) flexible metal conduit.
Dimensions:
See Fig. 4 and 5.
Approvals:
Underwriters Laboratories Inc. (UL): Pending.
Factory Mutual (FM): Pending.
IAS: Pending.
-20°F to +120°F
5 psi 34.5 kPa).
3 60-2026—10
MINIPEEPER® ULTRAVIOLET FLAME DETECTORS
3-11/16
(94)
1 (25)
6-1/2 FT. (1.98M)
C7927A1008
3-1/4 (82)
C7927A1016
3-3/4 (95)
4 FOOT (1.2 METER)
LEADWIRES (2)
1
(25)
M17783
Fig. 4. Installation dimensions of C7927A1016 (U.S.A. version) and C7927A1008 (European version) in in. (mm).
INSTALLATION
IMPORTANT
Ultraviolet radiation sensing tubes have a life
expectancy of 40,000 ho urs of co ntinuo us use within
When Installing This Product...
1.
Read these instructio ns c aref ull y. Failure to follow them
could damage the product or cause a hazardous
condition.
2.
Check the ratings given in the instructions and on the
product to make sure the product is suitable for your
application.
3.
Installer must be a trained, experienced, flame
safeguard co ntrol technician.
4.
After installation is complete, check out product
operation as provided in these instructions.
Disconnect power supply before beginning installation to
prevent electrical shock and equipment damage. All wiring
must comply with applicable electrical codes, ordinances and
regulations. Use NEC Class 1 wiring.
the flame detector's specified ambient temperature
and voltage ratings. Wearout of an ultraviolet
radiation sensing tube results in failure of the UV
sensor to properly discriminate between flame
conditions.
The C7027A, C7035A and C 7044A F lame De tectors
should only be used on burners that cycle on/off
periodically or, in the absence of cycling, are
periodically checked for proper operation.
Recommended industry standards for the frequency
of sensor checks, either through cycling (employing
safe-start check methods) or periodic maintenance,
vary between once every ten seconds and once
every week, depending on the standard used and
the application needs.
M17784
60-2026—10 4
Consult the equipment manufacturer or the
governing standard for recommendations about
frequency of checks.
Controls incorporating safe-start checks, and
sensors and controls employing constant check
means are available from Honeywell. See your
Honeywell representative for specific information.
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