Fantini cosmi C820RQ Dual Power Room Thermostat Instruction Manual
| General | Details |
|---|---|
| Name | Fantini cosmi C820RQ Dual Power Room Thermostat Instruction Manual |
| Make | Fantini Cosmi |
| Language | English |
| Filetype | PDF (Download) |
| File size | 3.33 MB |






Fantini Cosmi C820RQ Power Manual: Questions and Answers
Fantini Cosmi C820RQ Power specifications
| Power supply | 230 V - 50 Hz |
| Battery life | > 1 year |
| Setpoint range | 2 ÷ 40 °C; increments of 0.1 °C |
| Storage temperature | -10 ÷ +60 °C |
| IP rating | IP32 |
| Dimensions | 98 x 98 x 20 mm (square base) |
| Weight | 0.100 kg |
| Power consumption | 1 W |
What does the Static differential setting do on the Fantini Cosmi C820RQ Power?
It manages the temperature difference between OFF and ON modes when using ON/OFF adjustment. Instruction Manual, p. 34
How do I enable the Pump Anti-seizure function on the Fantini Cosmi C820RQ Power?
Configure the activation minutes of the circulating pump to a value between 1 and 10 minutes.
- Access the Pump Anti-seizure setting.
- Enter a value from 1 to 10 minutes for pump activation time.
- The function activates automatically and remains active even when the thermostat is off. Instruction Manual, p. 34
What is the default TPI proportional band for Fantini Cosmi?
0.5°C, adjustable from 0.5°C to 2.0°C for TPI adjustment mode. Instruction Manual, p. 33
Can the Fantini Cosmi C820RQ Power operate on batteries alone without mains power?
Yes, use 2 AA 1.5V alkaline batteries inserted in the rear compartment. Several advanced functions won't be available in battery mode. Instruction Manual, p. 26
What does fast flashing mean on the Fantini Cosmi C820RQ Power display in Stand-by mode?
The batteries are completely flat. The device can no longer be operated and will enter OFF mode. Instruction Manual, p. 26
Difference between COMFORT and ECONOMY modes on the Fantini Cosmi C820RQ Power?
COMFORT suits times you're home. ECONOMY provides energy savings for nights or brief absences. Instruction Manual, p. 27
What comes inside the Fantini Cosmi C820RQ box?
Thermostat C820RQ, rectangular base, and manual. Instruction Manual, p. 20
Fantini Cosmi C820RQ Power compared with other room thermostats
| Specification | Fantini Cosmi C820RQ Power | BECA BHP-8000 C | BEOK TDR89 | BEOK TGW60 |
|---|---|---|---|---|
| Power supply | 230 V - 50 Hz | 24VDC/AC +10% | 100 ~ 240V | 100 ~ 240V |
| Setpoint range | 2 ÷ 40 °C; increments of 0.1 °C | 42-122 ℉ (5~50℃) | 5-95℃ | 5-95℃ |
| Storage temperature | -10 ÷ +60 °C | 23~113℉ (-5~45℃) | -5~55℃ | -5~55℃ |
| Power consumption | 1 W | <1.5W | <1W | <1W |




















































