resideo C554A Operation manual
PRODUCT DATA
60-2148-05
C554A
Cadmium Sulfide Flame Detector
APPLICATION
The C554A Cadmium Sulfide Flame Detector (cad cell) is a
photoconductive flame detector used with oil primary
controls such as R4166, R4184, R8182, R8184, R8185, R8404
and R8991.
FEATURES
• Cadmium sulfide sensing element provides faster
response than bimetal sensors.
• On flame failure, the cad cell causes the oil primary
control to shut down the main burner.
• Mounting brackets available to fit all applications.
• Entire cell is hermetically sealed (glass to metal) to reduce
cell deterioration by humidity, soot, or oil fumes.
• Plug-in cell for easy replacement.
• Recessed cell provides more accurate flame sighting and
prevents accumulation of dirt and soot on cell face.
C554A CADMIUM SULFIDE FLAME DETECTOR
60-2148—05 2
SPECIFICATIONS
Important
The specifications given in this publication do not
include normal manufacturing tolerances. Therefore,
this unit might not exactly match the listed
specifications. 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.
Models:
C554A Cadmium Sulfide Flame Detector two-wire, two-piece
plug-in cell for use with oil primary controls such as R4166,
R4184, R8182, R8184, R8185, R8404 and R8991.
Electrical:
Maximum voltage 60 Vdc or 60 Vac peak.
Ambient Temperature:
140$F(60$C) at the cell.
Dimensions:
See Fig. 1.
Mounting (see Fig. 1):
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EUDFNHWV
Leadwire:
Yellow, single-molded, dual-cord, number 18 stranded wire.
NEC Class 1. Varied lengths available on request.
Certifications:
Underwriters Laboratories Inc. Listed: File Number
MP268, Guide Number MCCZ.
Canadian Standards Association Component Listed: File
Number LR1620, Guide Number 300-1-0.2.
Replacement Part:
130367 Replacement Cad Cell.
C554A CADMIUM SULFIDE FLAME DETECTOR
360-2148—05
1/4 (6)
1/2 (13)
3/16
(5)
5/8 (16)
15/16 (24)
1/4 (6)
9/16
(14)
1 (25)
1 5/16
(33)
11/32 (9)
1-5/32
(29)
11/16 (18)
1-1/16
(27)
1-5/8 (41)
50°
5/8 (16)
3/4 (19)
1 (25)
1-5/16
(33)
29/32
(23)
1/4 (6)
17/32
(13)
17°
1-1/4
(32)
5/16 (8)
1 (25)
M7864
TYPE A TYPE B TYPE E
TYPE G TYPE J TYPE K
TYPE P TYPE R TYPE S
1SOCKET DIMENSIONS AND PLACEMENT OF BRACKET HOLES ARE THE
SAME AS FOR TYPE A EXCEPT WHERE NOTED.
11 1
1
11
11
1/8
(3)
Fig. 1. Mounting bracket dimensions in in. (mm).
INSTALLATION
When Installing this Product . . .
1. Read these instructions carefully. 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 service
technician.
4. After installation is complete, check out product
operation as provided in these instructions.
CAUTION
Disconnect power supply before beginning installation
to prevent electrical shock or equipment damage.
Location
The burner manufacturer determines the cad cell location
(see Fig. 2). If an alternate location must be used, make sure
that:
쐃The cell has a clear view of the flame.
쐇Ambient light does not reach the cell.
쐋Ambient temperature at the cell location is below 140$F
(60$C).
쐏Movement, shielding, or radiation of metal surfaces
located near the cell do not affect cell operation.
AIR TUBE
IGNITION
ELECTRODE
IGNITION
TRANSFORMER
CAD CELL
NOZZLE
M7857
Fig. 2. Cad cell location.
C554A CADMIUM SULFIDE FLAME DETECTOR
60-2148—05 4
Mounting
Direct Replacement
쐃Select the mounting bracket that most closely matches
the existing mounting bracket or use the bracket
provided.
쐇Remove the cell from the socket.
쐋Insert the mounting bracket into the socket slot (Fig. 3)
as far as it will go.
NOTE: Bend the mounting bracket to fit, if necessary.
쐏While holding the mounting bracket in the slot, insert the
screwdriver in the other end of the slot (Fig. 3). Bend the
screwdriver, first to the left and then to the right, to crimp
the end of the mounting bracket and hold it in position.
쐄Remove the screwdriver and replace the cell.
쐂Mount the new cell and bracket assembly in the
location of the old assembly.
Oil Line Mounting
If desired, mount the C554A on the oil line using the oil line
adapter bracket and the mounting bracket that give the
C554A the best view of the flame oruse the mounting
bracket provided.
BRACKET
SLOT
SOCKET
LEADWIRE
M7853
Fig. 3. Insert mounting bracket into socket slot.
쐃Remove the cell from the socket.
쐇Insert the mounting bracket into the slot on the socket
(Fig. 4) as far as it will go.
NOTE: Bend the mounting bracket to fit, if necessary.
BRACKET
BRACKET
SOCKET
SOCKET
LEADWIRE
SCREWDRIVER
SCREWDRIVER
SLOT
INSERT SCREWDRIVER AND MOVE IN DIRECTION SHOWN BY
ARROWS TO SECURE BRACKET IN SOCKET
M7855
C554A CADMIUM SULFIDE FLAME DETECTOR
560-2148—05
쐋While holding the mounting bracket in the slot, insert the
screwdriver in the other end of the slot (Fig. 4). Bend the
screwdriver, first to the left and then to the right, to crimp
the end of the mounting bracket and hold it in position.
Fig. 6. Typical hookup for C554A to
oil burner primary control.
Wiring
Disconnect power supply before beginning wiring to prevent
electrical shock or equipment damage.
All wiring must comply with local electrical codes and
ordinances. See Fig. 6 for a typical C554A hookup to the oil
burner primary control.
OIL LINE
SCREW
OIL LINE ADAPTER
BRACKET
TO
NOZZLE
MOUNTING
BRACKET
LEADWIRE SOCKET PLUG-IN
CELL
M7856
Fig. 5. Use oil line adapter bracket to
mount C554A on to oil line.
쐏Remove the screwdriver and replace the cell.
쐄Slide the mounting bracket into the sleeve on the oil
line adapter bracket. Push firmly to lock the cell and
the bracket assembly in position.
쐂Mount the oil line adapter bracket on the oil line using
the screw and nut provided (Fig. 5).
T
T
F
F
THERMOSTAT
(24V)
C554A
CADMIUM SULFIDE
FLAME DETECTOR
OIL BURNER RELAY
M7858
OPERATION
The C554A Cadmium Sulfide Flame Detector consists of a
plug-in, light-sensitive cell and a socket with leadwire. The
photocell is a ceramic disk, coated with cadmium sulfide and
overlaid with a conductive grid. The entire cell is hermetically
sealed (glass to metal) to prevent cell deterioration. Electrodes
attached to the ceramic disk transmit an electrical signal to the
primary control, which operates the main burner. In darkness,
cadmium sulfide has a very high resistance to the passage of
electrical current. In visible light, its resistance is very low and
current is allowed to pass to the primary control. Flame failure
causes the cell to stop conducting electricity, resulting in the
primary control shutting off the burner. Fig. 7 shows the
sensitivity range of the cad cell.
Fig. 7. Light response tolerance for C554A cad cell.
300,000
200,000
100.000
60,000
30,000
10,000
6,000
3,000
1,000
600
300
100
.02 .04 .08 .02 0.4 0.8 2 4 8
.03 .06 .10 0.3 0.6 1.0 3 6 10
RESISTANCE (OHMS)
CADMIUM SULFIDE
RESISTANCE RANGE
ILLUMINATION (FT CANDLES)
M7865
C554A CADMIUM SULFIDE FLAME DETECTOR
60-2148—05 6
CHECKOUT
To check cad cell operation, use the following procedure:
쐃Disconnect the cad cell leadwires; then start the burner.
Shortly after the burner starts, place a temporary
jumper between terminals F-F. Connect an ohmmeter
across cad cell leadwires; resistance should be less
than 1600 ohms.
쐇Stop the burner and remove the temporary jumper.
쐋With the burner off, check the dark cell resistance
across cad cell leadwires. Resistance should be greater
than 20,000 ohms.
NOTE: If cell resistances are different than specified,
recheck the wiring and the location of the cell.
If necessary, replace the plug-in part of cell,
5HVLGHRpart no. 130367 ReplacementCad
Cell.
쐏Reconnect cad cell leadwires. Check the
Protectorelay® Burner Sequencing Relay control
according to the instructions packed with the control.
SERVICE AND REPLACEMENT
In normal operating conditions, the C554A does not require
cleaning. If a badly adjusted burner causes heavy
accumulation of dirt and soot on the cell surface, carefully
wipe the cell surface to restore full view of the oil flame.
If the C554A is damaged, replace the plug-in part of the cell.
Order 5HVLGHR part no. 130367 Replacement Cad Cell.
C554A CADMIUM SULFIDE FLAME DETECTOR
760-2148—05
C554A CADMIUM SULFIDE FLAME DETECTOR
© 2021 Resideo Technologies, Inc. All rights reserved.
This product is manufactured by Resideo Technologies, Inc. and its affiliates.
www.resideo.com
Resideo Technologies, Inc.
1985 Douglas Drive North, Golden Valley, MN 55422
1-800-468-1502
60-2148—05 M.S. Rev. 07-21 | Printed in United States
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