Manual USDT Revsion 8 - Thermomax Technologies

USDT 2001 OPERATION
ADVANCED MODE
S etting mode – Press the selection key (yellow) for approximately two
seconds to switch into the programming/setting mode. Software for
solar water heating systems is stored in file P0. P1, P2, and P3 are program
files for other applications. This manual covers only the solar water-heating
program.
Advancing – Press the selection key briefly to advance from one setting
value to the next.
Changing – Press Set-Up key once to increase the value. Hold it down to
roll back to the lowest value after reaching the maximum value.
Normal mode – To return to normal operating mode, press the selection
key for two seconds while displaying P0. The system also returns to normal
mode within one minute if no key is pressed.
Software version number sequence
Hysteresis curve for temperature differential control.
H1x is for temperature difference and H2x is for maximum tank
temperature curves with “x” as a corresponding value. Hysteresis
curves (a lagging in the set-point) are variable and are a function of
temperature. For example H14 (actual factory setting) means that the
hysteresis of the maximum temperature is 4 o F at 64 o F (pump is on at
60 o F and off at 64 o F) or 8 o F at 128 o F.
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Thermo Technologies