Honeywell Smoke Alarm C554A User Manual

C554A  
Cadmium Sulfide Flame Detector  
INSTALLATION INSTRUCTIONS  
APPLICATION  
CAUTION  
Disconnect power supply before beginning  
installation to prevent electrical shock or equipment  
damage.  
The C554A Cadmium Sulfide Flame Detector (cad cell) is  
a photo conductive flame detector (see Fig. 1) used with  
oil primary controls such as R4166, R4184, R8182,  
R8184, R8185, R8404 and R8991. It consists of a plug-in,  
light sensitive cell and a socket with Type E mounting  
bracket, factory-installed leadwire and an oil line adapter  
bracket. Leadwire length is 60 in. (1520 mm). The detector  
is installed inside the air tube of the burner where the cell  
can view the flame and is wired to the F-F terminals of the  
oil primary control.  
Location  
The burner manufacturer determines the cad cell location  
(see Fig. 2). If an alternate location must be used, make  
sure that:  
³
·
»
The cell has a clear view of the flame.  
Ambient light does not reach the cell.  
Ambient temperature at the cell location is below  
140°F (60°C).  
Movement, shielding, or radiation of metal surfaces  
near the cell do not affect cell function.  
The photocell is a ceramic disk coated with cadmium  
sulfide and overlaid with a conductive grid. Electrodes  
attached to the ceramic disk transmit an electrical signal to  
the primary control. 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. The entire cell is hermetically sealed  
(glass to metal) to prevent cell deterioration.  
¿
IGNITION  
TRANSFORMER  
CAD CELL  
IGNITION  
ELECTRODE  
AIR TUBE  
SOCKET  
LEADWIRE  
NOZZLE  
MOUNTING  
BRACKET  
M7854  
PLUG-IN-CELL  
Fig. 1. C554A Cadmium Sulfide Flame  
Detector (cad cell).  
M7857  
INSTALLATION  
Fig. 2. Cad cell location.  
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.  
Mounting  
Direct Replacement  
³
·
Remove the cell from the socket.  
Insert the mounting bracket into the socket slot  
(Fig. 3) as far as it will go.  
NOTE: Bend the mounting bracket to fit, if  
necessary.  
3. Installer must be a trained, experienced service  
technician.  
4. After installation is complete, check out product  
operation as provided in these instructions.  
®U.S. Registered Trademark  
Copyright © 1996 Honeywell Inc. • All Rights Reserved  
60-0164-1  
 
C554A CADMIUM SULFIDE FLAME DETECTOR  
SCREW  
OIL LINE ADAPTER  
BRACKET  
CHECKOUT  
To check cad cell operation, use the following procedure:  
OIL LINE  
TO  
NOZZLE  
³
Disconnect cad cell leadwires; then start burner.  
Shortly after burner starts, place a temporary jumper  
between terminals F-F. Connect an ohmmeter  
across cad cell leadwires; resistance should be less  
than 1600 ohms.  
MOUNTING  
BRACKET  
·
»
Stop burner and remove temporary jumper.  
With burner off, check dark cell resistance across  
cad cell leadwires. Resistance should be greater  
than 20,000 ohms.  
PLUG-IN  
CELL  
SOCKET  
M7856  
LEADWIRE  
NOTE: If cell resistances are different than  
specified, recheck wiring and location of  
cell. If necessary, replace plug-in portion of  
cell, Honeywell part no. 130367 Replace-  
ment Cad Cell.  
Fig. 5. Use oil line adapter bracket to mount  
C554A on oil line.  
Wiring  
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Reconnect cad cell leadwires. Check the  
Protectorelay(burner sequencing relay) control  
according to the instructions packed with the control.  
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.  
SERVICE AND REPLACEMENT  
Under 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.  
OIL BURNER RELAY  
THERMOSTAT  
(24 VOLT)  
T
T
F
F
If the C554A is damaged, replace the plug-in portion of the  
cell. Order Honeywell part no. 130367 Replacement Cad  
Cell.  
C554A  
CAD CELL  
M7858  
Fig. 6. Typical hookup for C554A to oil  
burner primary control.  
3
60-01641  
 
Automation and Control Solutions  
Honeywell Inc.  
1985 Douglas Drive North  
Golden Valley, MN 55422  
Honeywell Limited-Honeywell Limitée  
35 Dynamic Drive  
Scarborough, Ontario  
M1V 4Z9  
60-01641 J.S. Rev. 2-96  
 

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