SELENA
Multifunctional LED Clock
USER MANUAL V32D
KERA TECHNOLOGIES INC. 2013
www.ledclocks.com
47
Fn 75
OUT 25 C ( or 77 F ) ( also see Fn 0 , Fn 1 and Fn 15 )
Fn 76
IN 25 C ( or 77 F ) ( also see Fn 0, Fn 1 and Fn 15 )
Fn 77
TEMP 25 C ( or 77 F ) ( also see Fn 0, Fn 1 and Fn 15, 27 )
Selecting INTERNAL or EXTERNAL probe
Either the
INTERNAL
or the
EXTERNAL
temperature
PROBE
may be selected for control by enabling (INTERNAL selected)
or disabling (EXTERNAL selected) of the function
Fn 27
.
If one or both probes are not used, the probes must still be connected to the back panel screw terminals.
Alternately, a 50 kohm to 100 kohm resistor may be connected instead.
PROGRAMMABLE MULTI—EVENT HEAT / COOL THERMOSTAT
( Optional Feature )
In all temperature monitoring or control configurations the function
Fn 61
must be enabled.
The Programmable, Multi-Event Thermostat is enabled by enabling the function
Fn 52.
The
option # 714B
is for either Heating
or
Cooling control and incorporates only one probe and one internal relay. The relay
is usually SPDT type with both, the Normally Open and Normally Closed contacts, available at the back panel terminal.
The
option # 714C
is for Heating
and
Cooling control and incorporates two probes and two internal relays. This option
includes the auto change-over function for Heat—Cool.
Models with two probes can be ordered either with one probe installed in the clock housing or optionally, with both probes
connected externally to the terminal block on the back panel .
Models with two relays can be ordered with either
two Normally Open or two Normally Closed SPST
contacts or with
two
SPDT
contacts, or any combination thereof.
The Programmable Thermostat may be preset for up to
32 events, separately for each of the 7 days of the week,
repeated each week . Total of up to 224 events per week.
The Programmable Thermostat mode allows for programming of the time instances (hours and minutes of the day and
weekday) and the Target Temperature for each event.
All programmed data is stored in the internal, non-volatile memory which is retained even without the supply power.
Programming of THERMOSTAT EVENTS
When the function
Fn 52
is enabled, the thermostat may be programmed at any time during the regular clock operation and
DOES NOT
require invoking of the programming mode.
1.
Press the
SET
key at any time during the normal clock operation.
The display will show “MANU” or “AUTO” text momentarily.
A) If in the “AUTO” mode, this will be followed by the Weekday and the Event number for that day.
NOTE: Pressing the “STOP” key at this time will invoke the MANUAL mode of operation.
B) If in the “MANU”al mode, the current preset temperature will follow.
NOTE: Pressing the “STRT” key at this time will invoke the AUTO mode of operation.
2.
A) If in the “AUTO” mode, the event number will flash to indicate that it is active for selection. Use
UP
and
DN
keys
to select the event number for that day.
B) If in the “MANU” mode, the preset temperature will flash to indicate that it is active for selection. Use
UP
and
DN
keys to change the setting.
3.
A) If in the “AUTO” mode, to move the cursor to Weekdays press the
NXT
key. Use
UP
and
DN
keys to select the
day and then press the
NXT
key. The display will show the current Target Temperature for this event. Note: If this
value was never stored before, it may be either very low or very high. Pressing the UP or DN key in the next step
will put the value within the correct range.
B) If in the “MANU” mode, GO TO STEP 4.
4.
Using the
UP
and
DN
keys, set the required Target (Preset) Temperature.
