15
3.2
Environment thermostat
In case you need to connect the room thermostat, use for the IN9 connection, clamps 50-51. (See electrical
diagram on page 14) Then, through the System –Settings Menu, configure input 9 with environment thermostat
logic, setting the P70 parameter to 4.
By setting the parameter A01 in the System Menu, you can work with different logics the Environment
Thermostat according to the needs of the user.
If A01 = 0
Environment Probe/Thermostat not reached: The System passes in the Check-Up state.
Probe/Environment Thermostat Reached: The Exceed System in the Shutdown state.
If A01 = 1 (default setting)
Probe/Environment Thermostat not reached: The System goes in the Normal state. Probe/Environment
Thermostat Reached: The Exceed System in the Modulation State.
If A01 = 2
Environment Probe/Thermostat not reached: the System goes in the normal state.
Probe/Environment Thermostat Reached: The System goes in the State of Standby Environment
if A01 = 3
Probe/Environment Thermostat not reached: The system reactivates Pump 1.
Probe/Environment Thermostat reached: If the temperature of the water in the boiler exceeds the value
of the thermostat Th19 (50 degrees C) the system blocks Pump 1 until the thermostat Th21 (80 degrees
Celsius) is reached.
If A01 = 4
Probe/Environment Thermostat not reached: the System reactivates the Plant Pump and brings it in
Normal.
Probe/Environment Thermostat reached: If the temperature of the water in the boiler exceeds the value
of the thermostat Th19 (50 degrees C) the system blocks Pump 1 until the thermostat Th21 (80 degrees
Celsius) is reached.
If A01 = 4
Space/Environment Thermostat not reached: the System reactivates the Plant Pump and exceeds it in
Normal. Probe/Environment Thermostat reached: the System exceeds in the state of Standby and blocks
Pump 1 as in case 3.
If A01 = 5
Probe/Environment Thermostat not reached: Heating fan working regularly.
Probe/Environment Thermostat Reached: If A11-0 The Heating Fan is turned off, if A11-1 goes to Power
1.
