Fantini Cosmi C820RQ LED Thermostat User Manual
- June 13, 2024
- Fantini Cosmi
Table of Contents
C820RQ
LED THERMOSTAT
PROGRAMMABLE THERMOSTATS, THERMOSTATS
AND THERMOREGULATION
C820RQ LED Thermostat
- Modern and contemporary design with 3 LED digits and 3 buttons
- Universal installation and flexibility of use thanks to dual battery and 230V power supply, square shape and rectangular base kit
- Suitable for controlling heating or cooling systems 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@50Hz |
|---|---|
| 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@50Hz |
|---|---|
| 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
Note: if the device is supplied at 230V, batteries are not required.
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 ranges | possibility to set the minimum and maximum setpoint |
value in summer/winter
OPERATION
- C820RQ thermostat has 3 buttons, suitable to manage the 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, adjustble from 2 to 7°C (Winter season).
- Down key – Decreases
- Mode button + heating/cooling LED
- Up key – Increases
- Temperature and basic functions display
ADVANCED FUNCTIONS
C820RQ is a room thermostat that allows the 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 a number of 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 the 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 a 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).