QD-ENG-68 Rev0 7/12/16
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PROGRAMMING THE CONTROLLER:
The digital controller has many function settings that may or may not be required for your application. However, the controller
has been set at the factory with typical default settings for immediate system operation. Please review the following default
settings.
Cooling Start Temperature
80ºF (27°C)
Heating Start Temperature
50ºF (10°C)
High Temperature Alarm
100ºF (38°C)
Low Temperature Alarm
40ºF (4°C)
Full
Speed
Temperature
98ºF
(37°C)
Visual Alarm
“ON”
Audible Alarm
“ON”
Default Temperature Unit
Fahrenheit
User Pin code Setting
“+” “–“ “Select” “Exit” (1,2,3,4)
Filter
Maintenance
Alarm 0
days-disabled
Communication
Address
1
(not
used)
To change the controller settings, please follow the sequence below to enter the pin code 1234 into the program modification:
“+”
1
“-”
2
“Select”
3
“Exit”
4
Figure
2: Digital Tap Sensitive Controller
After entering the above sequence, three alternating flashing boxes should be shown on the display face, indicating the
code was accepted. If no selection is made within one minute, the system returns to the normal operating mode.
NOTE:
If entering the PIN code fails the first time, please wait until the key icon
disappears and then enter the pin code again.
Press “Exit” to go back to normal mode from the controller programming mode.
Press the “
SELECT”
button to continue programming. and
icons indicate the 'cooling on' set point is shown on the
controller display. The cooling system will begin operation at this temperature and will remain operating until the enclosure
temperature decreases approximately seven degrees Fahrenheit (four degrees Celsius) below the cooling on set point.
Press the
“+”
or “
-”
button until the desired set point is displayed. The range for this adjustment is 70° to 126°F, (21° to
52°C).
Press the “
SELECT”
button to continue programming. When
and
is displayed on the screen, it indicates the 'heating
on' setting. The heating system will begin operation at this temperature and remain operating until the enclosure temperature
increases approximately seven degrees Fahrenheit (four degrees Celsius) above the 'heating on' set point. Press the “
+
”
or “
-
” until the desired set point is displayed within a range of -22°F to 68°F (-30°C to +20°C).
NOTE: Review alarm settings if the ‘cool on’ or ‘heat on’ set points have been changed.
Press “
SELECT
” to continue programming.
and
icons appearing on the screen indicate the setting for high
temperature alarm set point.
The alarm will activate at this temperature and will automatically reset at two
degrees Fahrenheit (one degree Celsius) below this temperature. Press the “
+”
or “
-”
button to change the
alarm set point within a range of 7ºF (or 4ºC) above the 'cooling on' set point, to 140°F (60°C).
