Honeywell C554A Bedienungsanleitung
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
near the cell do not affect cell function.
C554A
Cadmium Sulfide Flame Detector
Copyright © 1996 Honeywell Inc. • All Rights Reserved X-XX UL
INSTALLATION INSTRUCTIONS
APPLICATION
The C554A Cadmium Sulfide Flame Detector (cad cell)
is a photoconductive 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 factory-installed
mounting bracket and leadwire. The detector is installed
inside the air tube of the burner where the cell can view
the flame. It is wired to the F-F terminals of the oil
primary control.
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.
Fig. 1. C554A Cadmium Sulfide Flame
Detector (cad cell).
M7854
PLUG-IN-CELL
MOUNTING
BRACKET
SOCKET
LEADWIRE
60-0348-2
60-0348—2 2
C554A CADMIUM SULFIDE FLAME DETECTOR
AIR TUBE
IGNITION
ELECTRODE
IGNITION
TRANSFORMER
CAD CELL
NOZZLE
M7857
Fig. 2. Cad cell location.
The orifice (available on some models) reduces the
amount of light available to the photocell minimizing the
chance that the cell will respond to the glow from the hot
refractory. See Fig. 3 for a cutaway view of the orifice.
ORIFICE WALL
CADMIUM SULFIDE CELL
M7863
Fig. 3. Cutaway view of orifice.
Mounting
Mount the C554A at the rear of the burner. The mounting
bracket can be bent to fit, if necessary.
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. 4 for a typical C554A hookup to the
oil burner primary control.
T
T
F
F
THERMOSTAT
(24V)
C554A
CADMIUM SULFIDE
FLAME DETECTOR
OIL BURNER RELAY
M7858
Fig. 4.Typical hookup for C554A to oil burner
primary control.
CHECKOUT
To check cad cell operation, use the following procedure:
쐃Disconnect cad cell leadwires; then start the
burner. Shortly after the burner starts, place a
temporary jumper between terminals F-F. Connect
an ohmmeter across the cad cell leadwires;
resistance should be less than 1600 ohms.
쐇Stop burner and remove temporary jumper.
쐋With the burner off, check the dark cell resistance
across the 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
plug-in portion of cell, Honeywell part no.
130367 Replacement Cad Cell.
쐏Reconnect cad cell leadwires. Check the
Protectorelay®(burner sequencing relay) control
according to the instructions packed with the
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.
If the C554A is damaged, replace the plug-in portion of
the cell. Order Honeywell part no. 130367 Replacement
Cad Cell.
60-0348—2 J.S. Rev. 2-96
Automation and Control Solutions
Honeywell International Inc. Honeywell Limited—Honeywell Limitée
1985 Douglas Drive North 35 Dynamic Drive
Golden Valley, MN 55422 Scarborough, Ontario M1V 4Z9
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