FantiniCosmi C820RQ Dual Power Room Thermostat Instruction Manual

FantiniCosmi C820RQ Dual Power Room Thermostat

• Modern and contemporary design with 3 LED digits and 3 buttons
• Universal installation and flexibility of use thanks to a dual battery and 230V power supply, square shape and rectangular base kit
• Suitable for controlling heating or cooling systems and also for hospitality applications
• Energy saving and comfort optimisation through the modulating control (TPI technology)
• Power supply 2 x 1.5V AA alkaline batteries or 220-230Vac@50/60Hz
• Battery life > 1 year
• Relay contact rating 5(3)A 250 Vac
• Temperature adjustment range 2 – 40°C, increase 0.1°C
• Adjustment differential STD, 0.3 – 5 K
• Thermal gradient of reference 4 K/h

REGULATIONS AND APPROVALS

• Compliant with EN 60730-1 and second parts;
• Compliant with Directive 2014/30/EU (EMC); 2014/35/EU (LVD)
• ErP classification (Reg. EU 811/2013 – 813/2013): Class IV; 2%

DIMENSIONS mm

INSTALLATION

• SQUARE BASE: wall-mounting or flush-mounting in 500 and 502 module boxes at a height of approx. 1.5 mt above the floor in a suitable position to correctly detect the room temperature.
• RECTANGULAR BASE: wall-mounting or flushmounting in 503 module box at a height of approx. 1.5 mt above the floor in a suitable position to correctly detect the room temperature.

ELECTRICAL CHARACTERISTICS

• Power supply 2 x 1.5 V AA alkaline batteries or 220-230Vac@50/60Hz
• Maximum input power 1 W
• Relay contact rating 5(3)A 250 Vca
• Type of action 1 B.U. (micro-disconnection)
• Type of output 1 relay for heating/cooling (3 screw terminals, closed + open)
• Software Class A
• Electric insulation Double insulation
• Pulse voltage 4000V

ELECTRICAL CONNECTIONS

GENERAL CHARACTERISTICS

• Temperature adjustment range 2 – 40 °C, increase 0.1°C
• Measurement range/room T display -9 to +50 °C; resolution 0.1 °C
• Adjustment differential STD, 0.3 – 5 K
• Thermal gradient of reference 4 K/h
• Maximum room temperature 45°C
• Adjustment ON/OFF or TPI
• LED switch-off 5 – 10s from last session
• always ON (only with 230V mains supply)
• Temperature sensor type NTC
• Storage temperature -10°C – 60°C
• Protection rating IP32
• Degree of pollution 2
• Temperature display Celsius
• Display lock with password
• Limit temperature range possibility to set the minimum and maximum setpoint
• value in summer/winter

OPERATION

• The C820RQ thermostat has 3 buttons, suitable for managing minimal functions. All the advanced modes can be set from the advanced menu.
• C820RQ thermostat allows 3 operating modes
• COMFORT – for a comfort-oriented regulation.
• Adjustable from 2 to 40°C
• ECONOMY – for an energy-saving regulation.
• Adjustable from 2 to 40°C
• OFF – switched off system (Summer season) or antifreeze mode, adjustable from 2 to 7°C (Winter season)

1. Down key – Decreases
2. Mode button + heating/cooling LED
3. Up key – Increases
4. Temperature and basic functions display

ADVANCED FUNCTIONS
C820RQ is a room thermostat that allows temperature setpoint adjustment in ON/OFF or TPI modes.

OPTIMISATION
When the thermostat is set in ON/OFF, the required setpoint temperature can be achieved by acting on the on/off times of the heating/cooling system according to the type of the installed system and the set differential, minimising the energy consumption of the system itself.

TPI LOGIC (Time Proportional & Integral control)

If the thermostat is power supplied at 230V, the special TPI algorithm can be used. In this control mode, the thermostat reaches the setpoint with accuracy and precision to maintain a more constant level of comfort, while guaranteeing the shortest possible switch-on time. According to several settable parameters, such as the energy class of the flat, the type of emission terminal, the proportional band, the regulation period and the room temperature, the C820RQ optimises the system’s working time with a proportional and integral action.

The output is always a single contact but controlled over time. As soon as the room temperature reaches the setpoint temperature, the thermostat switch-on time decreases in every period. In this way, the TPI control reduces boiler starts and maintains a more constant comfort level around the required setpoint. This allows better comfort and cost savings for the end user.

It is also possible to access two different menus for configuring certain parameters:

USER MENU

• Password setting
• Stand-by time
• Display light intensity
• Offset to correct the temperature
• Season (summer/winter)
• Firmware release version

ADVANCED MENU

• Winter season: minimum and maximum set point value
• Summer season: minimum and maximum set point value
• Antifreeze setting
• Data displayed on the homepage
• ON/OFF – TPI control function
• Optimisation for the ON/OFF function
• Static differential
• Anti-seize pump
• Virtual relay
• Energy class for the TPI function
• Emission terminal for the TPI function
• TPI adjustment period
• TPI proportional band
• Device reset

SPECIFICATIONS

• LED thermostat for room temperature control in heating and cooling systems.
• Equipped with TPI adjustment algorithm for a more precise and accurate control of the generator.
• Thermostat features: white colour; power supply at 220-230Vac or with batteries (not included).
• Operation: Economy, Comfort, Off.
• 1 relay output for boilers/chillers with ON/OFF or TPI adjustment.
• Display lock with password. Setting of minimum and maximum setpoint value in summer/winter; anti-seize function; wall mounting on 500, 502 or 503 module boxes.
• Temperature range 2 – 40 °C; regulation differential STD / 0.3 – 5 °C; reference temperature gradient 4K/h.
• Antifreeze temperature range 2 °C – 7 °C; protection class IP32.
• Compliant with EN 60730-1 and second parts.
• ErP classification: Class IV; 2% (Reg. EU 811/2013 – 813/2013), Compliant with Directive 2014/30/ EU (EMC)
• Directive 2014/35/EU (LVD).

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