Steffes Transmitter - Manual (Page 7)

D IP S WITCH S ETTINGS C ONTINUED ….
DIP SWITCH 6: NOT USED IN PLC TRANSMITTER
FACTORY DEFAULT SETTING = OFF
DIP SWITCH 7: NEGATIVE OUTDOOR TEMPERATURE
CALIBRATION
This dip switch is used to calibrate the outdoor temperature sensor
information DOWNWARD if it is reading HIGHER than the actual
outdoor temperature.
FACTORY DEFAULT SETTING = OFF
Off = Standard operating position.
On = A negative 5 o F (-5 o F) outdoor temperature calibration will be applied.
DIP SWITCH 8: POSITIVE OUTDOOR TEMPERATURE
CALIBRATION
This dip switch is used to calibrate the outdoor temperature sensor
information UPWARD if it is reading LOWER than the actual outdoor
temperature.
FACTORY DEFAULT SETTING = OFF
Off = Standard operating position.
On = A positive 5 o F (+5 o F) outdoor temperature calibration will be applied.
I NSTALLATION C ONTINUED …
Outdoor Temperature Sensor
The outdoor sensor provides outdoor temperature information to the
transmitter which in turn sends these signals, wireless, to the microprocessor
based heating systems. The heater’ s brick core temperature target level
adjusts automatically in relation to outdoor temperature.
A temperature sensing thermistor is connected to the two “OS” positions of
the low voltage terminal strips for automatic charge control of ETS heaters.
This sensor can be utilized if the transmitter is mounted in a location where it
can accurately sense the outdoor temperature and will not be affected by
direct sunlight or other sources of heat and cold. The temperature sensor may
be affected by heat generation from inside the enclosure. However, in most
applications, it provides suitable outdoor temperature sensing.
If the transmitter is installed indoors and automatic charge control
is desired, a remote outdoor sensor is required. This outdoor
sensor connects to the two "OS" positions of the low voltage
terminal strip in the transmitter. The existing thermistor MUST
be removed before connecting a remote mounted outdoor sensor.
Indicator Light
When the circuit board is energized, the indicator light should always
illuminate, either in a flashing mode or in a continuous illumination mode, to
indicate the microprocessor is processing information. The various
illuminations of this light are described below:
No Illumination: The microprocessor is unable to process information.
Check for proper system wiring.
Continuous Illumination: Will occur anytime a peak control signal is
being received.
Slow Flash (4 second duration): Will occur during off-peak times.
The illumination time of the light is in direct relation to the temperature
information the transmitter is receiving from the outdoor temperature
sensor. A long illumination time indicates warmer temperatures and a
short illumination time indicates colder temperatures.
Room Temperature Set Back
If using the PLC transmitter with the Steffes microprocessor based heating
equipment and utilizing the automatic room temperature set back option, the
addition of a signaling device is required to initiate the set back time. This
signaling device connects to the “R” and “E” input positions of the terminal
strip in the transmitter. When the transmitter receives the set back signal, it
sends that signal, wireless, to the heater(s). The heater(s) respond by
maintaining the set back temperature programmed into them. A closed
switch indicates room temperature set back is enabled.
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