: Features automatic summer-winter changeover and supports "Free Cooling" and "Free Heating" modes to optimize energy efficiency. Technical Specifications Inputs/Outputs :
| Terminal | Function | Typical Connection | | :--- | :--- | :--- | | 1 | Probe 1 (PTC/NTC) – Common | Brown wire of NTC probe | | 2 | Probe 1 (PTC/NTC) – Input | Blue wire of NTC probe | | 3 | Probe 2 (Evaporator) – Input | Second probe wire | | 4 | Probe 2 Common (linked to terminal 1) | Link wire to terminal 1 | | 5 | Digital Input (Door switch) | Door switch (NO/NC) | | 6 | Alarm Relay (NO) | External buzzer/light | | 7 | Alarm Relay (Common) | Neutral for alarm | | 8 | Compressor Relay (NO) | Compressor contactor coil | | 9 | Compressor Relay (Common) | Main power neutral (to compressor) | | 10 | Defrost Relay (NO) | Heater or solenoid valve | | 11 | Defrost Relay (Common) | Neutral for defrost | | 12 | Power Supply (Neutral) | Mains Neutral (N) | | 13 | Power Supply (Live) | Mains Live (L) | eliwell sb655 c manual
Whether you're managing a centralized air-conditioning unit or a complex chiller system, the Eliwell SB655/C the Eliwell SB655/C