12
#
Mnemonic
Name
Meaning
Unit
Preset
min
max
1
DT
Temperature
Difference
If this value is attained the pump
is switched on.
°C
10
1 20
2
HS
Hysteresis
How many degrees must the
temperature difference be
decreased below DT to switch
off the pump.
°C
2
1
10
3
DEL
Time Delay
The time between the DT
attainment to the switch on of
the pump.
Λεπτά
1
1
5
4
Cme
Collector Minimum
Temperature Option
If the pump activation must be
done only above a temperature
limit.
YES/NO
yes
- -
5
CMN
Collector Minimum
Thermostat
The temperature limit when
CME=YES.
°C
10
10 50
6
cht
Highest Collector
Temperature
Medium of highest temperature
must not run through the store
and the piping.
°C
150
100 150
7
AFE
Anti-ice option
Activates the anti-ice protection.
YES/NO
YES
- -
8
AFT
Anti-ice temperature
When AFE=YES defines the
anti-ice activation temperature.
°C
3
-10 10
9
SMX
Complete Charge
Store Temperature
Temperature limit beyond of
which the store is considered
completely charged and the
pumps from collectors or burner
are deactivated.
°C
65
30 95
10
Cce
Collector Cooling
Option
An option allowing the collector
cooling to the store when SMX
temperature is attained.
YES/NO
YES
-
-
11
CMt
Maximum Collector
Temperature
When CCE=YES means the
collector temperature limit above
which the collector must be
discharged to the store no mater
if the SMX temperature is
already achieved and the store
is fully charged.
°C
100
95 150
12
rSE
Reverse Cooling
Option
When selected allows the
reverse cooling of the store to
the collectors and the piping
during the night. The reverse
cooling continues running as low
as the SMX temperature.
YES/NO
YES
-
-
Table 4
Submenu:
Thermo
#
Mnemonic
Name
Meaning
Unit
Preset
min
max
1
Dhw
Desirable Domestic
Hot Water
Temperature
Defines the temperature set
point that the single thermostat
maintains.
°C
50
20 60
2
dwh
Domestic Hot Water
Temperature
Hysteresis
How many degrees below DHW
the temperature must fall to
switch on again the relay.
°C
5
1
10
Table 5
Submenu:
Logic
#
Mnemonic
Name
Meaning
Preset
min
max
1
sel
Priority selection
In some configuration modes (6,9) the stores
can be charged in a sequential or
contemporary manner.
1
1
2
Table 6
Submenu:
Cal.
#
Mnemonic
Name
Meaning
Preset
min
max
1
Tr1
Offset of Probe 1
This value is permanently added or subtracted
from the temperature reading to compensate
against possible errors.
0
-5 +5
2
Tr2
Offset of Probe 2
The same for probe 2.
0
-5 +5
3
Tr3
Offset of Probe 3
The same for probe 3.
0
-5 +5
4
Tr4
Offset of Probe 4
The same for probe 3.
0
-5 +5
Submenu Config
This submenu contains SEL parameter named which defines the operating configuration and corresponds
to one of the figures of section “Operating Configurations”. The correct value in SEL parameter forces
ULTRA controller to comprise the respective set of virtual controllers to operate according to the plan.
Parameters Se1…Se4 define the respective sensor type for each input.
Parameters FR1…FR3 define the output relay state during sensor failure (failsafe).
Submenu DT no1 to DT no3
These submenus consists of the parameters of Table 3 for each one of the virtual differential thermostats.
If the selected configuration in submenu Config does exclude some of the existing 3 virtual differential
thermostats there is no need to enter values for them. A brief explanation of the available functions of the
differential thermostats can be found below.
Differential Function
Each one of the differential thermostats controls the operation of a pump. When for example the
temperature of a collector exceeds the temperature of the store at least at DT the device counts the
predefined time delay (DEL). If during this period the temperature difference remains >DT when the
time delay elapsed the controller activates the corresponding relay. The relay is deactivated when the
temperature difference fall below (DT-HS).
Minimum Collector Temperature Function
This function can be selected by setting CME=YES. When the collector temperature is <CMN the
relay remains inactive. This function gains huge importance when in low solar action and
simultaneously low environmental temperature conditions the controller can spend most of the
auxiliary burner energy as loses in the collector piping. In low temperature geographic locations the
activation of this function is suggested.
Anti-ice protection
When AFE=YES the anti ice function is enabled. In this case when the collector temperature falls
below AFT the corresponding pump is activated to minimize the risk of freezing. The pump switch off
again when collector temperature overrun the AFT limit.
Store High Temperature Protection
The collector and burner pumps operate normally when the store temperature is below the SMX limit.
If the store temperature is exceeded the SMX limit the store is considered as fully charged and the
pumps are deactivated. No matter what the SMX setting is the collector and burner pump stop
functioning when the store temperature reach the 95°C limit.
Collector Cooling Function
