Usdt 3002 – Thermo Technologies USDT 3002 User Manual

Page 9

USDT 3002

us.ind

4.1.1 Indication of collector temperatures

4.1.2 Indication of tank temperatures

4.1.3 Indication of sensor 3 and sensor 4

4.1.4 Indication of other temperatures

4.1.5 Operating hours counter

Displays the current collector temperature.

• COL : collector temperature (1-collector-system)

COL:
Collector temperature
display range: -40 ... +482 °F

Displays the current tank temperature.

• TST : tank temperature (1 relay)
• TSTL/U: tank temperature (2 relays)

TST:
Tank temperatures
Display range: -40 ... +482 °F

Displays the current temperature of the corresponding
additional sensor (without control function).

• S3

: temperature sensor 3

• S4

: temperature sensor 4

Note:
S3 and S4 are only indicated if the temperature sensors
are connected (shown).

S3, S4:
Sensor temperatures
Display range: -40 ... +482 °F

Displays the current temperature of the connected sensor.

TRF:
other measured
temperatures
Display range: -40 ... +482 °F

h P1, h P2:
Operating hours counter
Display channel

The operating hours counter adds up the solar operating

hours of the respective relay (h P). Completed hours are

shown on the display and may be reset back to 0. Select the

operating hours channel (h P). The center button for approx.

2 seconds in order to get back into the RESET-mode of the

counter. The display-symbol is ﬂashing and the operating

hours will be set to 0. Press the center button again to save

the adjustment.
In order to ﬁnish the RESET-procedure, the button

must

be pressed in order to conﬁrm.
In order to interrupt the RESET-procedure, no button

should be pressed for about 5 seconds. The controller re-

turns automatically into the indicaton mode.

4.1.6 Measuring Collected Energy

OHQM:Energy Collection
Measuring
Adjustment range: OFF ... ON
Factory setting: OFF

The unit may be used in conjunction with a ﬂow meter for
energy collection calculations. This option is activated in the
channel OHQM.

The parameters of the ﬂowmeter (l/min) must be adjusted
in the channel FMAX. Antifreeze type and concentration
of the heat transfer medium are indicated on the channels
MEDT and MED%.

FMAX:
Volume ﬂow in l/min
Adjustment range 0 ... 20
in steps of 0,1
Factory setting 6,0