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Wiring External Controls
It is recommended that the boiler is controlled by an external control such as a time clock or room thermostat or a
combined programmable room thermostat such as the Gabarrónmodel CTP-10.
CAUTION: The switching connection of this control should be VOLT FREE and connected to the terminals
indicated 'TA' on the PCB. The factory fitted link across these terminals must be removed.
The boiler's automatic power modulation feature is activated by the initial interruption of this switching link.
4.11 ROOM THERMOSTAT CONNECTION
A 'volt free' room thermostat can be connected to regulate heating installation. To take advantage of the modulation
feature of MAS Boiler, the use of a room thermostat is required.
Connect the room thermostat across the terminals marked 'TA' on the PCB. See "12 WIRING DIAGRAMS".
4.12 OUTDOOR NTC TEMPERATURE SENSOR CONNECTION
An outdoor temperature sensor must be fitted to the boiler to activate the auto heating regulation depending on the
outdoors temperature.
Connect a NTC sensor (10kΩ - 25ºC) across the terminals marked T.EXT on the PDC. See "12 WIRING DIAGRAMS".
5 COMISSIONING
5.1 INSTALLATION PARAMETERS
These parameters must be adjusted by the installer to match the requirements of the installation.
To access to installation parameters menu – with front display OFF, press and hold the
and
buttons together for at
least 5 seconds.
To move forward or backward through the menu use the
and
buttons respectively.
To modify a parameter, press the
button to display the current setting, modify the setting as required using the
and
buttons. To confirm the new setting, press the
button once.
After setting the various parameters it is necessary to validate by pressing the
button for 3 seconds. If none of the
buttons are pressed for 30 seconds, the installation parameter menu will be automatically closed without validating/saving any
changes.
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