40
Instructions for the installer
3.13 Installation and operation with Open Therm Remote Control (optional)
WARNING
Only use original Remote Control Units supplied by the manufacturer.
The correct operation of the Remote Control itself and of the boiler is not guaranteed if non original Remote Control units not
supplied by the manufacturer are used.
The boiler may be connected to an Open Therm Remote Control (non-compulsory optional accessory supplied by manufacturer).
The Remote Control must only be installed by qualified personnel.
To install the Remote Control, refer to the instructions provided with the Remote Control itself.
The Remote Control must be installed on an indoor wall at a height of approximately 1.5 m from the floor and in a suitable location for
measuring ambient temperature: do not install in recess or corners, behind doors or curtains, and install away from heat sources, direct
sunlight, air draughts and water sprays.
The Remote Control cables must be connected to terminals (3) and (4) of the electronic board (see
Wiring diagrams
on page
49
) after having
eliminated the jumper supplied as a standard with the boiler.
The Remote Control connector is protected against inverted polarity, and the connections may be inverted.
WARNING
Do not connect the remote control to mains electrical power 230 V ~ 50 Hz.
The remote control wiring must not be grouped together in the same sheath as the power cables: if the cables are sheathed
together, electrical interference from the power cables may compromise the functions of the Remote Control;
For complete instructions on how to program the Remote Control, refer to the instruction manual included in the Remote Control kit.
Board and Remote Control communicate in each operating mode: OFF, SUMMER, WINTER, CH ONLY.
Boiler display layout corresponds to the setting made from the Remote Control, as for the operating mode.
The remote control may be used to view and set a number of special parameters denominated TSP parameters and reserved solely for
qualified technicians.
TSP0 parameter sets default data table and restores all factory settings, cancelling all preceding modifications on single parameters.
If a single parameter is found to be incorrect, the value given in the default value table is restored.
If the user attempts to set a value not within the permissible range for the parameter, the new value is rejected and the existing value is
maintained.
3.14 Selecting the operating range in heating mode
Heating water temperature adjustment range depends on the selected operating range.:
• standard range:
from 20°C to 78°C (pressing CH +/-);
• reduced range: from 20°C to 45°C (pressing CH +/-).
The standard range is active with curves P10 ≥1, while the reduced range is active with curves P10 <1.
The two ranges can also be selected even with the external probe disconnected.
The waiting time between one boiler ignition and the following one, used to prevent boiler frequent turning on and off is 4 minutes for both
ranges, and can be edited with the parameter P11.
If system water temperature decreases below a certain value, the waiting time is reset and the boiler re-ignited, as shown in the following
table:
Selected range
Re-ignition temperature
Standard range
< 40°C (P27)
Reduced range
< 20°C
Tab. 7 Boiler re-ignition temperature
Operation range selection is to be implemented by a qualified installer or a Service Centre.
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