!
Press and hold the
Up
Key or
Down
Key to change the value continuously (auto repeat function).
General Note:
!
During the program mode, each time
SET
key is pressed, the data will be saved into the EEPROM and advance to the next setting(parameter). If no change of
value is required, just press
SET
key once to go to the next step (parameter).
Quickset allows the user to change the setpoint temperature instantly without entering the program mode. Simply press
UP
(increase) or
Down
(decrease) key
during the normal operating mode. When the
Up/Down
key is pressed, the setpoint is flashing to indicate that the setpoint value can be changed. Press the
UP/Down
k
ey again to adjust the setpoint (press and hold for auto repeat function). Press
SET
key when finish or just walk away and it will return to normal mode after 30
seconds.
!
To return to normal operating mode from the program mode, press and hold the
SET
key for 3 seconds. However, the system also return to normal operating
mode if no key is pressed for 30 seconds.
QuickSet Feature:
SETTING THE CONTROLS
Program Mode:
Steps
Step1
Step 2
Step 4
Step 5
Step 3
Procedures
To start programming, press the
SET
key for 3 seconds to access the
Fahrenheit/Celsius mode. The lower LCD display will show the current status,
either
F
for degrees Fahrenheit or
C
for degrees Celsius. This annunciator will be
flashing. Then press either
Up
or
Down
key to toggle between the
F
or
C
scales.
** Please note that this value as well as all the temperature related value are
in degree Fahrenheit as set in step 1.
Press
SET
key again to access the differential mode. The lower LCD will display
the current differential (blinking) and the upper LCD will display
dF1
annunciator.
Then press either the
Up
key to increase or the
Down
key to decrease the
differential to the desired setting.
Press
SET
key again to access the heating or cooling mode. The upper LCD will
display the current mode, with flashing annunciator, either
H1
for heating or
C1
for cooling. Then press either the
Up
key or the
Down
key to toggle between the
C1
or
H1
operation.
Press
SET
key again to access the setpoint mode. The lower LCD will display the
current setpoint (flashing) and the upper LCD will display
S1
annunciator. Then
press either the
Up
key to increase or the
Down
key to decrease the setpoint to
the desired setting.
Press
SET
key again to access the Anti-Short Cycle time delay. The lower LCD
will display the current time delay(blinking), in minute and the upper LCD will
display
AC1
. Then press either the
Up
key to increase or the
Down
key to
decrease the delay to the desired setting. The increment is in 1 minute. Press
SET
key again to go back to normal operating mode.
The default value is
F
Description
Anti-Short Cycle time delay
Differential Temperature
Cooling or Heating
Fahrenheit or Celsius Scale
Default setting is:
75F
Setpoint Temperature
Default setting is:
1F
Default setting is:
H1
Default is: minutes
0
LCD Display
0
75
f
S i
8f i
I
f
H i
Ac i
S1 S1
PWM
ON
OFF
240V COM 120V
RELAY 1
NO C NC
SENSOR INPUTS
AC INPUT
93
Down Key
Up Key
Reset Key
Backlit Switch
Setpoint
Temperature
Sensor
Temperature
Fuse
Relay Output
Status
Indicator LED
SET Key
PWM Switch
120 VAC
(HOT)
(COM)
LOAD
SENSOR
PROBE
(P-01)
Figure 5: Typical Wiring Diagram for DST-777D
with 120Vac Loads
WIRING THE CONTROL
Refer to Figure 4 for
typical wiring connections
for DST-777S and Figure
5 for DST-777D . Do not
use wire larger than 12
AWG as jumper between
terminal blocks (eg.
“120V” and “C”)
Note: Set PWM slide switch to OFF
Programming Steps for Normal Control Mode (ON/OFF Control)
All the slide switches (Backlit and PWM) should be set before the control is powered up (so the desired switch settings are scanned by the microprocessor).
However if the settings on the slide switches are changed after power is supplied, press the
RESET
key so that the switch settings can be updated.
POWER ON
When the control is powered up, the model ID - “1SP.S” or “1SP.d” is displayed. Then the control will run Anti-short cycle delay(if any) and goes into normal
operating mode in which the Upper LCD will display the current sensor temperature and the Lower LCD will display the setpoint temperature.
Figure 4: Typical Wiring Diagram for DST-777S
with 120Vac Load
Terminal Representations:
240V is the hot of the 240Vac line voltage
COM is the neutral or ground of the line voltage
SENSOR INPUT
NC is Normally Close of SPDT switch and opens
when the relay is energized
120V is the hot of the 120Vac line voltage
C is Common of the SPDT switch
S1 S1 are the input terminals for sensor probe P-01
NO is Normally Open of the SPDT switch and closes
when the relay is energized
RELAY 1/RELAY 2
S1 S1
PWM
ON
OFF
240V COM 120V
RELAY 1
NO C NC
SENSOR INPUTS
AC INPUT
120 VAC
(HOT)
(COM)
LOAD
SENSOR
PROBE
(P-01)
RELAY 2
NO C NC
LOAD
!
Before power is applied to the
control, make sure that the
installation and wiring
connections are done correctly.
Also, ensure that the wires
connecting to COM and 120V
are not touching each other.
Checkout
!
Ensure that wires of the senor
probe are not touching each
other
