Control parts specifications
Default: 2 wire spring return valve or 3 wire SPST
valve
Option: 3 wire SPDT valve (set DPSW13_1 to ON)
2 wire spring return valve (normally OPEN)
3 way mixing valve (2 zone
control)
Default drive time = 60 seconds to 90°
3 wire SPST or SPDT with drive times to 90° between
30 and 240 seconds
Output line specifications
Output enabled when outdoor air
temperature is ≤ -20°C
Output enabled when outdoor air
temperature is ≤ -10°C (output trigger
temperature can be changed using FC23)
Input line specifications
Room thermostat (cooling)
Room thermostat (heating)