The CM927 thermostat is designed to provide automatic time and temperature control of heating or cooling systems in villas 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 values and electric heating systems (<10A). In combination with other CM927 room units and HC60NG receivers it can be used to control multi-zone applications (up to 4 zones).
The radio frequency-controlled CM927 system pack consists
of a room unit CMT927A 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 CM927 uses reliable RF communication technology in the 868MHz band.
The CM927 extra large LCD display, dynamic text display and
controls layout are identical to the CM907 ‘wired’ thermostat.
The unit is ideal for consumers who want reliable and precise temperature control from a modern looking, simple to program and easy-to-use product.
Room Unit Layout:
ELECTRICAL
RF
ENVIRONMENTAL & STANDARDS
TEMPERATURE CONTROL
TIME SETTING/PROGRAMMING
To enter the installer set-up mode:
In the Installer set-up we can:
Specific Applications | Setting | What do you need to change? | ||
Cycle/ Hour | Minimum ON time (in minutes) | Note : All parameters listed below belong to category 2 – System Parameters (see Installer Parameters Table) | ||
Heating | Gas Boilers (<30KW) | 6 | 1 | No changes required |
Oil Boiler | 3 | 4 | 1. Set Minimum ON Time to 4 minutes. 2. Set Cycle/Hour to 3. | |
Thermal Actuator | 12 | 1 | Set Cycle/Hour to 12. | |
Zone valve | 6 | 1 | No changes required. | |
Air conditioning | 1. Configure the thermostat to allow switching between heating and cooling modes (set parameter n.4:HC to 1) 2. Set the thermostat accordingly to the required mode of operation (heating or cooling) by pressing the TEMP or buttons together for 5 seconds. Modify the cooling program as required. | |||
Heat Pump/ Air conditioner | 3 | 4 | 1. Set Minimum ON Time to 4 minutes. 2. Set Cycle/Hour to 3. | |
Fan coil | 6 | 1 | No changes required. |
Special Features | Description | Setting | |
Optimisation (Variable Start Time) | The thermostat will adjust the start time in the morning/afternoon so the desired temperature is reached by the start of the program period. The system will restrict the start time to a max of 2 hours. | To enable: Set parameter 8:OP (category 1) to 1. | |
Heating or Cooling Operation | This product can be used for heating or cooling applications. If you select cooling mode the control algorithm and factory default program will be modified. You can independently modify the heating and cooling profile. | To enable: Set parameter 4:HC (category 2) to 1. | |
Summer/Winter Auto time change | This feature moves time automatically on the last Sunday of March and the last Sunday of October. The feature is factory enabled. | To enable: Set parameter 3:tC (category 1) to 1. | |
Temperature Offset | If the thermostat is located in a particularly hot/cold location for reliable signal transmission reasons then the measured/displayed temperature can be adjusted by +/- 3°C. This is useful if the homeowner wants the reading to match another appliance temperature display. | Set parameter 12:tO (category 1) to the required offset value. | |
Upper/Lower Temperature Limit | The normal upper temperature limit of 35°C can be reduced to 21°C to save the homeowner energy. The normal lower limit of 5°C can be increased up to 21°C to protect inhabitants from cold. | Set parameter 6:uL (category 1) to the desired upper limit. Set parameter 7:LL (category 1) to the desired lower limit. |
INSTALLER PARAMETER TABLES
Parameter | Installer Set- Up Number / Abbreviation (Press + or – keys to select) | Factory Setting | Optional Setting | ||
Category 1 Parameters – Room Thermostat Settings | |||||
Display | Description | Display | Description | ||
AM-PM / 24hr Display | 1:Cl | 24 | 24 hr clock display | 12 | 12 hr AM / PM clock display |
RESET Time / Temperature Program | 2:rP | 1 | Time / Temperature profile set to factory default Changes to 0 when one of the time/temp profiles are changed | 0
1 | Time / Temperature are as programmed To restore the factory profile set to 1 |
Automatic Summer/Winter Time Change | 3:tC | 1 | Automatic Summer/Winter Time Change Enabled | 0 | Automatic Summer/Winter Time Change Disabled |
LCD Backlighting | 5:bL | 1 | Backlighting Enabled | 0 | Backlighting Disabled |
Upper Temperature Limit | 6:uL | 35 | 35°C Upper Temp. Limit | 21 to 34 | 21°C to 34°C adjustment in 1°C steps |
Lower Temperature Limit | 7:LL | 5 | 5°C Lower Temp. Limit | 6 to 21 | 6°C to 21°C adjustment in 1°C steps |
Optimisation | 8:0P | 0 | Optimisation disabled | 1 | Optimisation enabled |
Temperature Offset | 12:tO | 0 | No offset | -3 to +3 | -3°C to +3°C adjustment in 0.1°C steps |
Proportional Band Width | 13:Pb | 1.5 | 1.5°C Proportional Band | 1.6 to 3.0 | 1.6°C to 3.0°C adjustment in 0.1°C steps |
Reset Parameters to Factory Defaults | 19:FS | 1 | All settings held are the factory defaults. Changes to 0 when one of the parameter values are changed | 0
1 | Settings are as modified above
To restore the factory profile set to 1 |
Parameter | Installer Set- Up Number / Abbreviation (Press + or – keys to select) | Factory Setting | Optional Setting | ||
Category 2 Parameters – System Settings (press the > button to access this category) | |||||
Display | Description | Display | Description | ||
Minimum boiler ON Time | 1:Ot | 1 | 1 minute minimum ON time | 2 to 5 | Selection of 2,3,4 or 5 minutes minimum ON time |
Cycle Rate | 2:Cr | 6 | 6 cycles per hour (cph) | 3, 9 or12 | Selection of 3,9 or 12 cph |
Heat / Cool Change | 4:HC | 0 | Disabled | 1 | Enabled |
Pump Exercise | 5:PE | 0 | Pump Exercise Disabled | 1 | Pump Exercise Enabled |
System Synchronisation | 6:Sn | 0 | Standard operation of the Room Unit | 1 | Room unit configured as Synchroniser |
Loss of Communication Instruction | 7:LC | 0 | Relay Off | 1 | Relay 20% on / 80% off |
The following parameters are for the control of other Honeywell Wireless products such as Wireless Underfloor Heating controls and Wireless Radiator controls. For more information please contact Honeywell sales. | |||||
Room Temperature Sensor Use | 8:Su | 0 | HC60 Control | 1,2,3 or 4 | 1 – HR80/HM80 control with own/remote sensor (no temperature displayed)
2 – Hr80/HM80/HCE80 control with CM Sensor
3 – HC60 control and HR80/HM80/ HCE80 control with own/remote sensor
4 – Hr80/HM80/HCE80 control with own/ remote sensor (temperature displayed) |
HR80 Window-Open Function | 9:HO | 0 | Disabled | 1 | Enabled |
HR80 Local Override | 10:HL | 1 | Enabled | 0 | Disabled |
Maximum Flow Setpoint | 11:uF | 55 | 55°C Maximum Flow Temp. | 0 to 99 | 0°C to 99°C adjustments in 1°C steps |
Minimum Flow Setpoint | 12:LF | 15 | 15°C Minimum Flow Temp. | 0 to 50 | 0°C to 50°C adjustments in 1°C steps |
Mixing Value Run Time | 13:Ar | 150 | 150 seconds | 0 to 240 | 0 to 240 sec. adjustments in 1sec steps |
Pump Overrun Run | 14:Pr | 15 | 15 minutes | 0 to 99 | 0 to 99 mins adjustments in 1min steps |
The R6660D relay box is designed for fixed wiring only and must be installed in accordance with latest l.E.E. regulations.
Ensure the wiring connection to the supply is via a fuse rated at no more than 10 amps and a Class “A” switch (having contact separation of at least 3 mm in all poles).
IMPORTANT
Description | Model | Logo | Literature | Availability | Spec Sheet |
7-day RF system pack (includes HC60) | CMT927A1015 | Honeywell | French & Dutch. | Sep 06 | ENOH8556 |
7-day RF system pack (includes HC60) | CMT927A1023 | Honeywell | French | Oct 06 | ENOH8556 |
7-day RF system pack (includes HC60) | CMT927A1031 | Honeywell | Spanish | Feb 07 | ENOH8556 |
7-day RF system pack (includes HC60) | CMT927A1049 | Honeywell | English (UK) | Oct 06 | ENOH8556 |
7-day RF system pack (includes HC60) | CMT927A1056 | Honeywell | Italian. | Sep 06 | ENOH8556 |
7-day RF system pack (includes HC60) | CMT927A1064 | Honeywell | HUN / GER | Mar 07 | ENOH8556 |
7-day RF system pack (includes HC60) | CMT927A1072 | Honeywell | CZ / SK / POL | Mar 07 | ENOH8556 |
7-day room unit spare | CMS927B1015 | Honeywell | French & Dutch. | Sep 06 | ENOH8556 |
7-day room unit spare | CMS927B1023 | Honeywell | French | Oct 06 | ENOH8556 |
7-day room unit spare | CMS927B1031 | Honeywell | Spanish | Feb 07 | ENOH8556 |
7-day room unit spare | CMS927B1049 | Honeywell | English (UK) | Oct 06 | ENOH8556 |
7-day room unit spare | CMS927B1056 | Honeywell | Italian. | Sep 06 | ENOH8556 |
7-day room unit spare | CMS927B1064 | Honeywell | HUN / GER | Feb 07 | ENOH8556 |
7-day room unit spare | CMS927B1072 | Honeywell | CZ / SK / POL. | Mar 07 | ENOH8556 |
HC60 Spare | R6660D1017 | Honeywell | French & Dutch. | Sep 06 | ENOH8556 |
HC60 Spare | R6660D1025 | Honeywell | French | Sep 06 | ENOH8556 |
HC60 Spare | R6660D1033 | Honeywell | Spanish | Sep 06 | ENOH8556 |
HC60 Spare | R6660D1041 | Honeywell | English (UK) | Sep 06 | ENOH8556 |
HC60 Spare | R6660D1058 | Honeywell | Italian. | Sep 06 | ENOH8556 |
HC60 Spare | R6660D1009 | Honeywell | Eng / Ger | Sep 06 | ENOH8556 |
Honeywell Control Systems Limited http://europe.hbc.honeywell.com
Newhouse Industrial Estate Motherwell ML1 5SB United Kingdom
Download Manual:
Honeywell Home CM927 Programmable Thermostat Product Specification Sheet
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