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3.2.11. Selecting the heating operation range
The heating water temperature adjustment range depends on the operating range selected:
- standard range: from 20°C to 80°C;
- low range:
from 20°C to 47°C.
Use the parameter P04 to select the climatic curve (only for operation with external probe). Use the parameter P21 to change the heating
circuit operating range. The range can be selected also in the absence of an external probe.
The standard range is active with P21 = 0, while the low range with P21 = 1.
The waiting time between one start-up and the next of the boiler, meant to avoid frequent switching on and off of the boiler during heating
operation, equals 3 minutes for both ranges, and can be change using the parameter P05.
The operation range must be selected by the installer or by an Authorized Service Centre.
3.2.12. Connection to a room thermostat (option)
The boiler can be connected to a room thermostat (option, not mandatory).
The contacts of the room thermostat must withstand 5 mA at 24 VDC.
The cables of the room thermostat must be connected to the terminals
1
and
2
of the terminal board (fig. 16).
The thermostat cables must not be sheathed together with the power supply wires.
3.2.13. Installation and operation with Open Therm Remote Control (option)
The boiler can be paired to an Open Therm remote control (option not mandatory, supplied by the manufacturer).
The Remote Control must be installed exclusively by qualified personnel.
Use exclusively original Remote Controls provided by the manufacturer.
Using Remote Controls other than originals, not supplied by the manufacturer, decreases the performances
of the remote as well as those of the boiler.
The cables of the Remote Control must be connected to the terminals
A
and
B
of the terminal board (fig. 16).
For the installation of the remote control follow the instructions enclosed to the remote control.
Find below some recommendations on the installation of the remote control:
-
the Remote Control cables must not be sheathed together with the power supply wires
; otherwise, any interference due to other
power cables may cause malfunctions of the Remote Control;
- place the remote control on an inner wall indoors, at a height of about 1.5 m from the floor, in a suitable position to correctly detect the
environment temperature; avoid installing it in niches, behind doors or curtains, near heat sources, exposed to direct sun light, air cur-
rents or water spray.
The connection of the Remote Control is protected against false-polarity, this means the connections can be switched.
The remote control must not be connected to the power supply 230 V ~ 50 Hz.
For the complete programming of the Remote Control refer to the instruction manual contained in its installation kit.
The communication between board and Remote Control works in any operation mode of the boiler: OFF/SUMMER/WINTER; as regards
the operation mode, the boiler display shows the settings made remotely.
By using the Remote Control the user is able to read and set a series of parameters, named TSP, reserved to qualified personnel (Table 9
e Table 10).
The settings of the parameters TSP02 and TSP15 configure the default data table and restores all original data.
If the one parameter value is wrong, it will be restored by picking it up from the default data table.
If the value to be set is outside the permitted range, the new value is rejected and the existing one will be preserved.
