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CHRONOS KEY Programmable Thermostat User Manual
TECHNICAL SPECIFICATIONS
• Power supply Chronos Key:
– 2 alkaline batteries 1.5 V (AAA type)
– battery life: 1 year
– battery charge level indication
– charge reserve ( for battery replacement): 1 minute
• Power supply Chronos Key 230:
– 230Vac (-15% ÷ +10%) 50/60Hz
– maximum consumption: 6 VA / 230Vac
– charge reserve ( for blackout): 2 days about
• Wall mounting or to coverage three-module in built box
• Terminals Chronos Key:
– 3 terminals for 1.5 mm² cable section for bistable output relay 5A / 250 Vac
– 2 terminals for 1.5 mm
2
cable section for digital input (external probe or on/off
with telephone activator)
• Terminals Chronos Key 230:
– 3 terminals for 1.5 mm
2
cable section for monostable output relay 5A / 250 Vac
– 2 terminals for 1.5 mm
2
cable section for power supply
• Temperature regulation:
– On/off with hysteresis setting between 0,1 °C and 1°C
– Proportional with settable band and period
• Summer/winter operating mode
• Weekly programming (7 programs available for each operating mode)
• Daily resolution: 1 hour (possibility to set delay activation of 15, 30, 45 minutes
independent for each hour)
• 5 settable temperatures:
– T1, T2, T3 in automatic operation
– Tm in manual operation
– Toff in off mode (antifreeze)
• Measured temperature display: 0 ÷ 50 °C
• Measurement precision: ±0.5 °C: ±0.5 °C
• Measured temperature resolution: 0.1°C
• Setpoint range: 2 ÷ 35 °C
• Clock precision: ±1 second/day
• Key lock by password
• Summer/winter time automatic change (excludable)
• Operating temperature: 0 ÷ +50 °C
• Storage temperature: -10 ÷ +65 °C
• Operating humidity: 20÷90% non condensing
• Protection degree: IP40
• Insulation: reinforced among accessible parts (frontal) and all other terminals
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