Thermo Technologies USDT 3000 - Manual (Page 7)

6
OPERATION
djustment keys: The USDT 3000 user interface is accessible via the three
pushbuttons. The forward key (1) is used for scrolling forward through the indication
menu or to increase the adjustment values. The backwards key (2) is accordingly used for the
reverse function.
To enter the parameter adjustment mode hold the forward key for 2 sec while HO is displayed.
The “SEt” icon will be displayed on upper corner of LCD once
you are in the adjustment mode. Now, you can select the
parameter you wish to adjust by using the forward and
backwards keys. Press the key “SEt” (3) in order to change the
selected parameter:
•
Select a parameter by keys 1 and 2
•
Shortly press key 3, so that “SEt” flashes
•
Adjust the value by keys 1 and 2
•
Press key 3, so that “SEt” permanently appears, the adjusted value is now saved
Please note: The circulation pump (A1) stops at tank temperature of 90 °C to avoid tank
overheating.
Parameter List
TC Collector temperature
TS Tank (return) temperature
TT Thermostat temperature (control temperature for R2 relay)
HO Solar operating hours (to be used for energy calculation)
DO Pump starting temperature difference
DF Pump switch off temperature difference
SX Maximum tank temperature
CL Collector limiting temperature
CX Maximum collector temperature
CN Minimum collector temperature
TO Thermostat (R2) switch on temperature
TF Thermostat (R2) switch off temperature
FN Function:
0 : Maximum tank temperature disable
1 : Maximum tank temperature enable
2 : Maximum tank temperature disable, cooling function enable
3 : Maximum tank temperature enable, cooling function enable
MM Manual operation mode:
0 : relays R1 and R2 are deactivated
1 : relay R1 is activated, relay R2 is deactivated
2 : relay R1 is deactivated, relay R2 is activated
3 : relays R1 and R2 are activated
4 : automatic operation
PG Program number
VN Version number
A