Usdt 3002 – Thermo Technologies USDT 3002 User Manual

Page 12

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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

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