Thermo Products USDT 2004B - Manual (Page 9)

9
Tank Overheating Protection
In Par Mode, user can customize the temperature range by using max ? and max=. Use the
navigation key ^_ in Par to locate max temperatures and push selection key ò once to make
changes:
max
?1 Pump stops above tank temperature (T2)
max =1 Pump runs again below this set point (T2)
Temperature Differential Adjustment
diff
=1
Pump runs when temperature difference between collector T1 (collector) and T2
(tank) exceeds this value. Factory setting is 15.1
o
F. Consult your collector
manufacturer for the recommended value.
diff
?1 Pump stops when temperature difference between collector T1 (collector) and T2
(tank) reaches this value. Factory setting is 7.0
o
F. Consult your collector
manufacturer for the recommended value.
Manual Operation of Pump
The pump can be manually turned on or off once Par mode has been accessed using Code 32:
AUTO Use the navigation key ^_ in Par to locate the pump window O AUTO. Push
selection key ò once to enter pump operation (ON or OFF). When the manual mode
has been selected, an icon (a small icon symbolizing a right hand image) appears
under the text line.
Automatic mode Manual ON Manual OFF