LA NORDICA TERMOROSA Ready DSA Manuel Utilisateur page 34

HOT WATER TEMPERATURE
The water temperature is shown on the display.
In the event of excess water temperature the device warns the user with an indicator light and an audible signal; the latter may be enabled or
disabled via the BUZZER function in the MENU.
See EXCESS TEMPERATURE ALARM.
NOTE: The circulating pump activation temperature is a factory setting.
FROsT PROTECTION
The frost protection function is always active on the device and acts by starting the pump when the temperature measured by the probe is
less than 5°C / 41°F (fixed threshold).
When the frost protection function is active, LED 1 Danger comes on and the message "FROST PROTECTION" is shown on the display.
ANTI-BLOCkAgE
The ANTI-BLOCKAGE function automatically starts the pumps connected to the controller for 30 seconds after an extended period of inactivity
(~96 hours without power being disconnected).
When the ANTI-BLOCKAGE function is activated, the display shows the message "ANTI-BLOCKAGE".
WARNINg: to ensure the ANTI-BLOCKAGE function is not disabled, always leave the digital controller connected to the power
supply (the display shows OFF).
EXCEss TEMPERATURE ALARM
When the temperature measured by the water probe exceeds 87°C / 188.6°F (fixed threshold set), this alarm is activated, starting the circulating
pumps.
When the alarm is activated, LED 1 Danger comes on and the message "EXCESS TEMPERATURE" is shown on the display.
FAULTy PROBE ALARM
When a probe fault occurs, this alarm is activated, starting the circulating pumps.
When the alarm is activated, LED 1 Danger comes on and the message "FAULTY PROBE" is shown on the display.
AIR VENT
Air inside the water circuit causes noise and may damage the circulating pumps. The presence of air may occur following installation of the
product or any other work on the water circuit.
Vent any air inside the system by operating the digital controller as follows:
• the water in the system must be at room temperature;
• with the digital controller OFF, press buttons T2 and T3 together. The display shows the message "AIR VENT".
EXTRA FUNCTIONs
The sub-menus are accessed from the TECHNICAL sETTINgs menu.
The boiler and puffer settings are accessed by pressing T4 in the sysTEM menu. Press T4 again to scroll the parameters. Press T2 and T3 to
modify the parameters. Press T4 again to confirm the changes and move on to the next parameter in the menu until you return to the SYSTEM
menu.
3-WAy VALVE
The 3-way valve is activated by the controller (if present and connected to the controller, as described in Chapter 7.3) with the device ON and
when the temperature detected by probe I1 exceeds the value set for THRESHOLD OUT1=60°C (PR01) and the boiler is in the demand status. It
is disabled when the temperature detected by probe I1 drops below the value set for THRESHOLD OUT1=60°C less the hysteresis value DELTA
OUT1=5°C (PR02), i.e. below 55 °C or when required. (See diagrams 6).
BOILER ACTIVE
Activate the boiler by setting parameter PR08=ON and connecting probe I3 Optional (L= 2 metres) as described in Chapter 7.3.
The boiler enters the request status (if activated PR08=ON) with the device ON until the temperature detected by probe I3 reaches the SET
BOILER MAX=60°C (PR09) value, at which point the request is fulfilled. The boiler returns to the request status when the temperature detected
by probe I3 drops below the SET BOILER MIN=30°C (PR10) value. (See diagrams
PUFFER ACTIVE
Activate the puffer by setting parameter PR11=ON and connecting probe I2 Optional (L= 2 metres) as described in Chapter 7.3.
The puffer enters request status with the device ON until the difference between the temperature detected by I1 and that detected by probe
I2 is greater than the DT ON=7°C (PR12) value. When the same difference drops below the DT OFF=5°C (PR13) value, the puffer exits from the
request status. (See diagrams
BOILER AND PUFFER ACTIVE
When both the boiler and the puffer are active, the parameters of point
priority to the boiler's request; once complete, it responds to the puffer's request. (See diagrams 6).
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5 and 6).
4 and 6).
7.2.2 7.2.3
and remain active. Via the 3-way valve, the controller gives
ENgLIsH