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Start-up - initial settings and functions
8.2.15 Unit input signal settings
MENU > FOR SERVICEMAN > 15. INPUT DEFINE
This function is used to adjust and set the unit input signal and probe functions according to the require-
ments of the system.
The parameters that can be set for this function are:
M1M2 (standard: 0 - settable: 0/1/2)
Defines what the potential-free contact M1M2 should control (0 = remote ON/OFF; 1 = boiler electric heater
(TBH); 2 = backup boiler).
SMART GRID (standard: NO - settable: YES/NO)
Enables/disables the Smart Grid function (see paragraph ”7.8 Dip-switch setting” on page 64
Tw2 (standard: NO - settable: YES/NO)
Enables/disables reception of the signal from the secondary circuit supply water temperature probe (Tw2).
Tbt1 (standard: NO - settable: YES/NO)
Enables/disables reception of the signal from the inertial storage tank temperature probe Tbt1.
Tbt2 (standard: NO - settable: YES/NO)
Reserved parameter, do not change.
Ta (standard: NO - settable: YES/NO)
Enables/disables reception of the signal from the room air temperature probe in the HMI (Ta).
Ta-adj (standard: -2 - settable: -10/10)
Sets a correction value to be considered on the value detected by the Ta probe.
SOLAR INPUT (standard: 0 - settable: 0/1/2)
In the presence of a solar thermal system, it defines how this should be managed by the unit.
• 0 = disabled
• 1 = the unit detects the temperature of the water in the solar circuit (Tsolar) and controls the solar pump
according to its own logic
• 2 = the unit receives an external ON/OFF signal (contacts SL1 / SL2, e.g. from the solar controller) and
controls the solar pump
F-PIPE LENGTH (standard: 0 - settable: 0/1)
Reserved, do not use.
RT/Ta_PCB (standard: 0 - settable: 0/1)
Reserved, do not use.
Pump_i silent mode (standard: NO - settable: YES/NO)
Enables/disables the silent function for the unit's pump, which reduces the pump output by 5% to make the
unit quieter.
DFT1/DFT2 (standard: 0 - settable: 0/1)
Defines what type of signal contacts DFT1/DFT2 should manage (0 = defrosting; 1 = alarm state).
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