Using the
key, it is possible to change, the operating mode of the thermostat output. The thermostat
MlM
can operate in three different modes:
Access the settings menu by pressing the
key for 4 seconds until
[F01]
appears, wich
SET
corresponds to the first item in the list of functions. Use the
or
keys to select the desired
UPP
DOW
function. By short pressing the
key it is possible to edit its value. Use the
or
keys to
SET
UPP
DOW
change the value, and when ready, briefly press the
key to memorize the set value and return to the
SET
function menu. To exit the menu and return to the normal operation (temperature indication) press the
SET
key (long press) until
[---]
appears.
Note¹: When the MAN (MANUAL) mode is selected, the thermostat will operate in this state for the
length of time set by the
[F08]
function - The maximum length of time the output will remain on in
manual mode. After this, the controller switches to the OFF mode.
5.3 THERMOSTAT OPERATING MODE
MAN = Thermostat in manual mode
AUT = Thermostat in automatic mode operating
according to the sensor temperature
OFF = Circulation
OFF = Thermostat output always off
Short press
Long press 4
seconds
Short press
6. ADVANCED OPERATIONS FOR INSTALLERS
(TECHNICAL USE)
6.2 TABLE OF PARAMETERS
6.1 CHANGING THE CONTROLLER PARAMETERS
6.3 DESCRIPTION OF PARAMETERS
MIN
MAX
UNIT
DEFAULT
DESCRIPTION
FUN
Difference (T1-T2) required to switch off the pump
[F02]
1.0
40.0
°C
4.0
Overheating temperature (T1) required to switch
off the pump
[F04]
0.0
200
°C
90.0
Operating mode
Maximum time for the output to be on in manual
mode
Maximum set value allowed for the desired
temperature (SP)
T2 sensor indication offset
[F06]
[F08]
[F10]
[F12]
[DIF]
Off (0)
F09
-20.0
[REF]
720
105
20.0
-
min.
°C
°C
[DIF]
360
105
0.0
F01 - Differential (T1-T2) to switch on the pump:
It allows configuring the temperature difference between the solar collector and the pool/thermal
reservoir to switch on the circulation pump. As the solar collectors receive energy, the temperature at
sensor T1 increases, and when this temperature is a set value over the temperature of sensor T2, the
pump is switched on and the heated water circulates and is stored in the pool/reservoir.
F02 - Differential (T1-T2) to switch off the pump:
It allows configuring the temperature difference between the solar collector and the thermal reservoir to
switch off the circulation pump. With the pump on, the temperature difference between the collector and
the reservoir (T1-T2) tends to decrease. When this value drops to a set value, the pump is switched off,
stopping the circulation of water.
F03- Defrost temperature (T1) required to switch on the pump:
When the temperature of the collectors (T1) is too low (e.g. winter nights), the pump is turned on,
depending on the set temperature of this parameters, to prevent water from freezing in the solar
collector and damaging it. The hysteresis of this control is fixed and set at 2.0°C. The minimum pump on
time is fixed and set at 2 minutes, to ensure that the water will pass through all the collectors. Even if the
T1 sensor temperature exceeds the defrost temperature (parameter
[F03]
), the controller obeys the
minimum (fixed) time. To disable the defrost function, change he setting to the minimum until OFF is
displayed.
F04- Overheating temperature (T1) required to switch off the pump:
When the temperature in the collectors (T1) is above the value set in this parameter, the pump is turned
off in order to prevent the overheated water from circulating through the pipes and damaging them, if
PVC pipes are used, for example. The hysteresis of this control is fixed and set at 2.0°C.
F05 - Vacuum tube function:
[OFF]
: Vacuum tube function disabled;
[TUP]
: Vacuum tube function for swimming pool;
[TUB]
: Vacuum tube function for bath.
If the
function is enabled, the controller activates the vacuum tube mode with parameters set for
[TUP]
pool. If the
function is enabled, the controller activates the vacuum tube mode with parameters
[TUB]
set for bath. These parameters determine the pump on period and time, in addition to the minimum
collector temperature (T1) and the maximum differential (T1-T2), corresponding to the thermal shock
protection to activate the function. There are some models of vacuum tube collectors where it is not
possible to directly measure the collector temperature, as they do not take readings from immersion
sensors. To accurately measure the water temperature at the outlet of the collector, a minimum amount
of water must be flowing. For this, the solar circuit must activate the pump at regular intervals so that the
water heated in the collector passes over the T1 sensor. When the vacuum tube function is enabled,
thermal shock protection is activated, which prevents the pump being switched on when the
temperature of the collector is much greater than the reservoir.
Note: the controller prioritizes the protection settings (overheating), and if they are engaged, ignores the
vacuum tube function.
F06 - Operating mode:
Allows configuring the operating mode of the controller as differential control (solar heating) or
thermostat for heating or cooling. When configured as differential, sensor T1 is used in the collector and
sensor T2 for the reservoir. When configured as a thermostat, only the T1 sensor is used.
[dIf]
: Differential mode;
[Hot]
: Thermostat heating mode;
[ref]
: Thermostat cooling mode.
F07 - Temperature control hysteresis:
Allows configuring the hysteresis temperature for both differential control and thermostat mode.
Through this function it is possible to set a temperature range within which the output will remain off.
For exemple: If set SP = 30.0 and
[F07]
= 1.0, heating of the pool/thermal reservoir will be turned off
when the temperature of the T2 sensor reaches 30.0°C, and will only switch on again to heat up, when it
falls below 29.0°C (30.0-1.0 = 29.0).
F08 -Maximum time for the output to be on in manual mode:
It is the length of time that the pump or thermostat output will remain on in manual mode. After this
period, the controller in differential operation mode switches to AUT (automatic) mode, and in
thermostat mode it switches OFF.
Note: In differential operating mode, if this parameter is set to OFF, it does not switch the pump on. In
thermostat operating mode, if this parameter is set to OFF, the output will activate until reaching the
desired temperature (SP), after this period, the controller will switch to OFF mode.
F09 - Minimum set value allowed for the desired temperature (SP):
F10 - Maximum set value allowed for the desired temperature (SP):
These parameters serve as lower and upper limits for setting the SP parameter (desired temperature in
the pool/thermal reservoir or thermostat). They are used to block the temperature adjustment in order to
restrict inappropriate configuration, for example. A high value can keep the thermostat output on for a
long time, increasing energy consumption.
F11 - T1 sensor indication offset:
F12 -T2 sensor indication offset
It allows compensating for possible deviations in the reading of sensors T1 (collector or thermostat) and
T2 (reservoir), due to a sensor being replaced or change in cable length.
7. SIGNALS
Reason:
Sensor 1 disconnected or outside the specified range.
Action:
Check sensor connections and operation.
Reason:
Sensor 1 disconnected or outside the specified range.
Action:
Check sensor connections and operation.
Reason:
Sensor 1 temperature below the temperature set in
[F03]
.
Antifreeze protection.
Overheating protection.
Reason:
Sensor 1 temperature above the temperature set in
[F04]
.
Actions:
Contact the technician responsible for the installation.
Actions:
Contact the technician responsible for the installation.
T1 sensor indication offset
[F11]
-20.0
20.0
°C
0.0
Minimum set value allowed for the desired
temperature (SP)
[F09]
-20.0
F10
°C
-20.0
Temperature control hysteresis
[F07]
0.1
20.0
°C
1.0
Vacuum tube function
[F05]
[Off]
[TUb]
-
[Off]
Defrost temperatura (T1) required to switch on
the pump
[F03]
Off (-19)
10.0
°C
8.0
Difference (T1-T2) required to switch on the pump
[F01]
1.0
40.0
°C
8.0
In automatic mode, activates the output when the
temperature is below the desired temperature.
Note²: This operating mode is available when set to
[F06]
-
[Hot]
(Heating Thermostat Mode) or
F06 -
[rEF]
(Cooling Thermostat Mode).
[F06]
=
[Hot]
or
[rEF]