Honeywell C7007A, C7008A, C7009A Installation Instructions Manual
C7007A, C7008A, C7009A Flame
Rod Holder & Flame Rod
Assemblies
INSTALLATION INSTRUCTIONS
IMPORTANT
The specifications given in this publication do not
include normal manufacturing tolerances. Therefore,
this unit may not match the listed specifications
exactly. Also, this product is tested and calibrated
under closely controlled conditions, and some minor
differences in performance can be expected if those
conditions are changed.
SPECIFICATIONS
Tradeline Models:
C7008A Flame Rod Assembly, straight pattern, with cover
(can be used with or without cover).
The small size of these devices enable their application to
flame detection in installations where space is limited. The
holder and flame rod assemblies facilitate flame proving on
gas burners or gas-ignited oil burners which are controlled by
electronic flame safeguard systems.
• The C7007A, C7008A, and C7009A may be used with
flame safeguard controls utilizing the rectification principle
of flame detection.
• The C7007A is a small, sturdy holder for a 3/16 inch [4.8
mm] diameter flame rod (flame rod ordered separately).
• The holder is externally threaded (1/2-14 NPT) for pipe
mounting.
• A collet chuck and setscrew position a flame rod securely.
If additional support of the flame rod is required, the
C7007A extension assembly is internally threaded (1/8-27
NPT) to accept a 1/8 inch iron support pipe.
• The C7008A is a miniature flame rod assembly with a
threaded (external 1/4-18 NPT) base, snap-on cover, and
flame rod.
• The C7008A can be used without the cover and a
coverless model is available.
• The C7008A is available with several lengths of flame rod.
One end of the flame rod is threaded for insertion into the
C7008A and the other end may be cut to an exact size.
• The C7009A is a smaller diameter flame rod assembly with
an externally threaded (1/8-27 NPT) base and readily
accessible Rajah electrical connection.
• The C7009A has a 12 inch (305mm) flame rod which one
end is threaded and the other capable of being cut to an
exact size.
FLAME RODS
C7008A1174, 12 inch [305 mm] Kanthal A1 C7008A1182, 24
inch [610 mm] Kanthal A1 see also, Accessories.
DIMENSIONS:
See Fig. 2.
ELECTRICAL CONNECTION:
Rajah male with companion connector.
MOUNTING:
Equipped with external 1/4-18 NPT threads.
STANDARD MODELS
C7007A Flame Rod Holder.
C7008A Flame Rod Assembly:
Miniature flame rod assembly.
C7009A Flame Rod Assembly: small diameter flame rod
assembly.
MOUNTING MEANS:
C7007A-external 1/2-14 NPT for pipe mounting.
C7008A-external 1/4-18 NPT for pipe mounting.
C7009A-external 1/8-27 NPT for pipe mounting.
FLAME ROD:
C7007A-Not furnished, refer to ACCESSORIES.
C7008A-Kanthal in 6, 12, 18, 24 inch [152, 305, 457, 610 mm]
lengths.
C7009A-Kanthal in 12 inch [305 mm] lengths.
SIL
Capable
3
60-2024-06
C7007A, C7008A, C7009A FLAME ROD HOLDER & FLAME ROD ASSEMBLIES
1
[28]
3
32
5
8
2 [56]
3
16
1 [49]
15
16
2
[65]
9
16
1
[41]
5
8
[16]
1/2-14 NPT
1/8-27 NPT
M1844
[10]
3
8
2 [56]
3
16
3
16
[5]
1/8 - 27 NPT THREAD
M1839
ELECTRICAL CONNECTION:
C7007A-Terminal screw.
C7008A and C7009A-Rajah male, with companion connector.
SIL 3 Capable:
The C7008 or C7009 when used with a R7847B Ampli-check
amplifier in Relay Module EC7810A, 20A, 30A, 40L, 50A;
RM7800[E,G,L,M], 30A, 38[A,B,C], 40[E,G,L,M] 50A,
90[A,B,C,D], 97[A,C], 98A is SIL 3 Capable in a properly
designed Safety Instrumented System. See form number
65-0312 for Certificate Agreement.
APPROVALS:
Underwriters Laboratories listed: File No. MP268, Canadian
Standards Association Certified: Master File No. LR 95329-1,
Factory Mutual approved: C7008A, C7009A, Swiss Re
(formerly Industrial Risk Insurers): acceptable.
Fig. 1. Dimensions in inches [mm] of C7007A flame rod
ACCESSORIES:
holder.
Table 1. Flame Rods (Kanthal A1, 2200° F [1204° C] MAX.)
Length in
Use With
Part
Number
Inches
[mm] Thread
C7007A 102709A 12 [305] None
102709B 18 [457] None
102709C 24 [610] None
102709D 36 [914] None
102709E 48 [1219] None
C7008A 105478A 6 [152] 6-32 UNS-
2A
105478B 12 [305] 6-32 UNS-
2A
105478C 18 [457] 6-32 UNS-
2A
105478D 24 [610] 6-32 UNS-
2A
C7009A
105644C
a
12 [305] 3-56 NF-2A
9
[22]
[4]
64
7
8
3
3 [79]
32
1/4 - 18 NPT
5
[16]
8
7
[22]
8
M1840
Fig. 2. Dimensions in inches [mm] of C7008A flame rod
assembly.
5
2 [67]
8
1/4 - 18 NPT
5
[16]
8
7
[22]
8
M1841
Fig. 3. Dimensions in inches [mm] of C7008A flame rod
assembly, coverless model
a
105479B electrical terminal and 21107 washer included.
R1061012 Ignition Cable:
For ignition installations in a high temperature environment.
Rated at 350° F [177° C] for continuous duty, and up to
500° F [260° C] for intermittent use. Tested to 15,000 V.
Fig. 4. Dimensions in inches [mm] of C7009A flame rod
assembly.
R1298020 Cable:
For flame detector "F" lead wire installations in a high temper-
ature environment. Rated up to 400° F [204° C] for continuous duty. Tested for operation up to 600 V and breakdown
up to 7500 V.
60-2024—06 2
INSTALLATION
WARNING
CAUTION
C7007A, C7008A, C7009A FLAME ROD HOLDER & FLAME ROD ASSEMBLIES
Wrong position will provide inadequate pilot
flame.
Read these instructions carefully. Failure to follow
them could damage the product or cause a
hazardous condition.
1. Check the ratings given in the instructions and on the
product to make sure the product is suitable for your
application.
2. Installer must be a trained, experienced flame safeguard technician.
3. After installation is complete, check out product operation as provided in these instructions.
MOUNTING
If the manufacturer of the burner has not provided a place for
mounting the flame rod holder, the installer should select a
suitable place on the burner faceplate or a place at the front of
the boiler. See Figs. 6, 7, 8, and 9 for typical mountings on
various burners. When selecting a location:
1. Locate the unit so that the flame rod will only prove a
pilot flame that will safely and quickly light the main
flame.
2. Locate the unit so that it will be clear of the fire door
opening radius.
3. Locate the unit so that drafts will not blow the pilot flame
away from the flame rod.
4. t is preferable to locate the unit so that the flame rod will
be vertical or at least angled downward. A rod so
installed is less likely to sag at high temperatures.
NOTE: For extra electrode support, couple a length of 1/8
inch iron pipe to the extension assembly, which is
already threaded (internal 1/8-27 NPT, C7007A
only).
5. The unit may also be installed so the flame rod is horizontal or angled upward, but extra support is needed for
rods over 12 inches [305 mm] long.
6. If the flame rod will be used to supervise a gas pilot for
an oil burner installation, the rod must be located far
enough from the oil flame to prevent oil spray from
impinging and burning on the surface of the rod.
7. A horizontal or inclined flame rod should enter the pilot
flame from the side. If the rod is located above and parallel to a horizontal or semi-horizontal pilot burner, it
may falsely indicate that a weak or candling pilot flame
is adequate for igniting the main burner. See Fig. 5.
WRONG POSITION OF ROD
ROD
PILOT BURNER
Fig. 5. Positions of flame rod with horizontal type pilot
burner.
TOP
VIEW
BURNER
C7008A
FLAME ROD
ASSEMBLY
PILOT
Fig. 6. Suggested installation of flame rod used to prove
both main and pilot burners.
C7007A
HOLDER
WITH FLAME
ROD
PILOT
M818
M1838
BURNER
TOP
VIEW
M1837
Fig. 7. Suggested installation on tunnel burner.
3 60-2024—06
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