Thermo Technologies USDT 3002 - Manual (Page 12)

USDT 3002
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4.1.14 Tube collector special function
If the controller measures an increase of 4 °Ra compared
to the recorded collector temperature the solar pump is
switched-on to 100 % for about 30 seconds. At this point
the current collector temperature is recorded as the
new reference value. If the measured temperature (new
reference value) is again exceeded by 4 °Ra, the solar pump
again switches-on for 30 seconds. If the switch-on difference
between collector and tank is again exceeded during
runtime of the solar pump or the standstil of the system, the
controller automatically switches over to solar charging.
If the collector temperature drops by 4 °Ra during standstill,
the switch-on value for the special tube collector function
will be recalculated.
O TC:
Tube collector special
function
Adjustment range:
OFF ... ON
Factory setting: OFF
The 2nd relay works independently from the solar ope-
ration and may be used for storage of surplus energy or
after-heating.
• AH O < AH F
the 2nd relay is used for after-heating
• AH O > AH F
the 2nd relay is used for use of surplus energy
On the display is shown if the second relay output is
activated.
4.1.15 Thermostat function
(Arr = 2)
after-heating use of surplus energy
AH O:
2nd relay-switch-on
temperature
Adjustment range:
32 ... 203 °F
Factory setting: 104 °F
AH F:
2nd relay-switch-off tempe-
rature
Adjustment range:
32 ... 203 °F
Factory setting: 113 °F
For control and service work the operating mode of the
controller can be manually adjusted by selecting the adjust-
ment value HAND, in which the following adjustments can
be made:
4.1.16 Operating mode
• HAND
Operating mode
OFF
: relay off (flashing) +
AUTO : relay in automatic operation
ON : relay on (flashing) +
HAND1,HAND2:
Operating mode
Adjustment range:
OFF, AUTO, ON
Factory setting: AUTO
4.1.17 Language
The menu language can be adjusted in this channel.
• dE : German
• En : English
• It : Italiano
• Fr : French
LANG:
Adjustment of language
Adjustment range: dE, En, It
Factory setting: En
4.1.18 Unit
The menu unit can be adjusted:
• °FAH
• °CEL
UNIT:
Adjustment of unit
Adjustment range: FAH, °C
Factory setting: FAH