Thermo Products USDT 2004B - Manual (Page 8)

8
CHANGING FACTORY SETTINGS:
Temperature differentials and manual operation of pump
Par Mode is USDT 2004's basic program; it uses two sensors to control a simple solar
water heating system. The unit is already factory set with ON/OFF pump temperatures.
However, these temperatures may be altered if required:
Par Using the navigation key
^_ allows you to select the desired parameter while you are in
the program mode. Press the selection key ò once to select the parameter in the window.
Selected parameter blinks allowing you to modify it. You can modify the selected parameter while
the middle window blinks by pressing the
ï or ð key. The unit accepts the new value by pressing
the ñ key once. Please make sure that you are in Par mode.
RUV 3.5 – Displays the software revision number corresponding to this manual.
PR O – Inapplicable
PROGRAMMING THE TEMPERATURE RANGE
USDT 2004 is factory set at approx T2 > 161
o
F PUMP OFF, T2 < 150
o
F PUMP ON. Once Par
mode has been accessed, using Code 32 as illustrated above, the user may program a different
temperature range. There are two temperatures that should be entered: