The new FAN / 503S is a DIN 503 built-in fan-coil regulator, with the main functions of the previous FAN 503, for the management and control of 2 solenoid valves (hot and cold) for 2 or 4 pipe systems. The product has been equipped with a new backlit display and a version designed to control the inverter motors, with consequent energy savings.
Power supply: 230V~/50Hz (+10% -15%)
Power consumption: 3VA
Temperature regulation range: 5°C÷35°C
Minimum temperature adjustment range: 0,1°C
Room temperature display: 0÷40°C (resolution 0,1°C)
Differential: settable: (0,4K factory setting)
Ambient probe on board: NTC 100K @25°C ±1%
Water probe: NTC 10K @25°C ±1% with double insulation
230V fan version outputs: 5 Relays (3 motor speeds + 2 solenoid valves)
0-10V brushless motor version outputs: 2 Relays (2 solenoid valves) / 0-10V modulating fan
Electrical contact capacity: 3 (1) A – 250VAC
Protection rating: IP 20 (with product installed)
Pollution degree: 2
Software class: A
Thermal gradient: 1K/15min.
Maximum operating temperature: 50°C
Humidity limits: 20% .. 80% RH (non condensing)
Storage temperature: 0÷60°C
Operating mode: summer / winter: (heating / air conditioning)
Assembly: in standard 3-module flush-mounting box (DIN503)