Product Description
The CM721/CM727 thermostat is designed to provide automatic time and temperature control of heating systems in houses and apartments. It can be used as part of a system in conjunction with combi- boilers, oil-burners and gas fired boilers, circulation pumps, thermal actuators, zone valves and electric heat systems (<10A).
The radio frequency controlled CM721/CM727 system pack consists of a room unit CMT721/CMT727 and a relay box R6660D (HC60NG). No wiring to the room unit is required. The installer only needs to wire the relay box to the controlled device (e.g. boiler) and mount the room unit in a suitable location where RF communication is reliable. The CM727 uses reliable RF communication technology in the 868MHz band.
Technical Properties
| Control functions |
Fuzzy Logic algorithm |
| Heating /Cooling application |
H or C |
| Time setting resolution |
time of day - 1 minute, program - each 10 minutes |
| Holiday mode |
Yes |
| Optimisation |
Yes |
| Temperature setpoints per day |
Up to 4 daily independent time and temperature level changes |
| Manual operation functions |
manual setting and anti-freeze protection |
| Temp. setpoint range |
5 ... 35 oC |
| Switch function/capacity |
24...230V 10A resistive, 3A inductive SPDT relay |
| RF frequency range |
868 ... 868,6 MHz |
| Blocking immunity |
Receiver class 2 (ETSI EN300 220-1 version 1.3.1) |
| Protection class |
IP30 |
| Terminal max. wire size |
2,5 mm2 |
| Power source |
Room unit - battery powered by 2 x AA size (LR6) alkaline cells; Relay box 230 V, 50 Hz |
| Additional Descriptions |
- Aautomatic change summer/winter time
- EEPROM memory holds the user program indefinitely
- Standard room unit and relay box (receiver) are binded in factory
- Installer Set-Up Mode
- Operation temperature: 00C to 400C with load <8A; 00C to 300C with load >8A
|
| Party timer |
Yes |
| Day off function |
Yes |
