For all the details about the Well-contact Plus system, refer to the installer manual that can be downloaded from the Software Product Software Well-contact Plus section of the website: www.vimar.com.
Touch screen thermostat for room temperature control (heating and air conditioning), KNX standard home automation system, class I temperature control device (contribution 1%) in ON/OFF mode, class IV (contribution 2%) in PID mode, can be interfaced with an actuator with proportional analog outputs 01466.1 to make a class V modulating room thermostat (contribution 3%), 1 input for electronic temperature sensor 20432, 19432 or 14432 or wired temperature sensor 02965.1, 1 programmable digital input, RGB LED backlighting – 2 modules.
General characteristics
The thermostat is suitable for controlling room temperature (heating/air-conditioning) in 2 or 4-pipe systems and neutral zone (only in 4-pipe systems), with the “boost” function to activate a second source that makes it possible to reach the desired thermal comfort faster. It can interact with other thermostats and with a monitoring unit (PC with Well-contact Suite software). It can manage 2 climate zones completely independently (equivalent to two thermostats A and B). For each zone, the heating/air-conditioning modes are managed according to the related reference temperature. It has a programmable digital input that can be used for other applications, such as .detecting an open window. The thermostat has an RGB back-lit display with 4 keys to control the temperature set point, to turn the temperature control system on/off and, depending on the type of device (.F or .S or .H) for the specific function that identifies it.
Display icons
Front view
Thermostat OFF Protection mode
Thermostat ON Comfort mode
Behavior after bus power on/off
Bus power off: -.
Bus power on the status will be set based on the setting of the parameters and the corresponding telegrams sent over the Bus.
Behavior after reset
As for Bus power-on.
N.B. The thermostat saves the comfort and standby setpoints set manually by the user; if you wish to reset them, set the ETS parameter “Reset Setpoint Shift in Economy Mode=YES”. When switched to “Economy” mode, the thermostat will reset the STBY and CNF values.
Neutral zone
The “Neutral Zone” is an operating mode of the thermostat (only for 4-pipe systems) in which the device keeps the temperature within a temperature range preset by the Winter Setpoint and Summer Setpoint (basically, there is no longer the usual Summer/Winter mode). If the measured temperature is below the Winter Setpoint, the thermostat switches on the heating valve and heats the room until the temperature exceeds the set value (e.g. 20°C for Comfort mode or 18°C for Standby mode). If the measured temperature exceeds the Summer Setpoint then the thermostat switches on the cooling valve and keeps it on until the temperature falls below the set Summer Setpoint value. Within the Neutral Zone, the thermostat does not switch on any valves and the temperature can vary freely; this zone is, therefore, nothing more than the difference between the Summer and Winter Setpoints when the room temperature is between the winter setpoint and the summer one. To avoid excessive temperature fluctuations, set a limited range (≤ 2°C) as shown in the figure below.
Setpoint displayed in Neutral Zone operation
When the thermostat is working in the neutral zone, the setpoint used for the adjustment is always the Current Setpoint, namely the one relating to the last heating/cooling mode that came into operation; the value displayed is instead a new setpoint named “Neutral Zone Setpoint”, which is the average value between the current summer and winter setpoints. Changing the temperature of the “Neutral Zone Setpoint” (with the “+” and “-” buttons on the thermostat) will also cause a change to the value of the “Shift Setpoint” resulting in a shift of the two current summer/winter setpoint values; the room temperature will therefore not become the one set by the guest but that of the summer/winter setpoint which at that moment is closest to the value of the current temperature in the room. Between the two summer/winter setpoints, there is the neutral zone in which the system is not activated.
Mid Season
This function is available from the supervisor only for systems configured with primary and secondary output; when active, it exchanges the 2 main and secondary outputs (and the related parameters too). It is recommended for making minor adjustments (such as +/-2 °C) during mid-season periods where it may be more convenient to operate only the secondary circuit (for instance Split).
Configuration
The KNX 21814 thermostat is configured in Neutral Zone mode if the following object is NOT connected: “Enable A: Summer – Winter – control” or “Enable B: Summer – Winter – control”. The thermostat can operate in Neutral Zone IF:
Types of errors at the time of configuration
| Error No. | Description |
| E1 | Selected 2-pipe system instead of 4-pipe system |
| E2 | Winter Comfort Setpoint ≥ Summer Comfort Setpoint |
| E3 | Winter Standby Setpoint ≥ Summer Standby Setpoint |
| E4 | Winter Economy Setpoint ≥ Summer Economy Setpoint |
| E5 | Antifreeze ≥ Too Hot |
N.B. Errors E2, E3, E4, and E5 may also be displayed if the thermostat is programmed in “4-pipe system” mode without the neutral zone according to the type of Setpoint shown in the table.
List of existing communication objects and standard settings
| No. | ETS name | Function | Description | Type | Flag 1 | Priority | |||||||
| C | R | W | T | U | I | ||||||||
| 1 | Internal sensor | Internal probe temperature | To see the temperature read by the thermostat sensor (to see the temperatures measured by thermostats A/B with Well-Contact Suite software, objects nos. 10/11 should be used) | 2 byte | C | R | – | T | – | – | Low | ||
| 2 | External sensor | External NTC probe temper- ature | To see the temperature read by the wired NTC probe connected to the thermostat (to see the temperatures measured by thermostats A/B with Well-Contact Suite software, objects nos. 10/11 should be used) | 2 byte | C | R | – | T | – | – | Low | ||
| 3 | External Temperature 1 | KNX probe temperature on bus | To see the temperature read by a KNX sensor con- nected to the bus (to see the temperatures measured by thermostats A/B with Well-Contact Suite software, objects nos. 10/11 should be used) | 2 byte | C | – | W | – | U | – | Low | ||
| 4 | External Temperature 2 | KNX probe temperature on bus | To see the temperature read by a KNX sensor con- nected to the bus (to see the temperatures measured by thermostats A/B with Well-Contact Suite software, objects nos. 10/11 should be used) | 2 byte | C | – | W | – | U | – | Low | ||
| 5 | External Temperature 3 | KNX probe temperature on bus | To see the temperature read by a KNX sensor con- nected to the bus (to see the temperatures measured by thermostats A/B with Well-Contact Suite software, objects nos. 10/11 should be used) | 2 byte | C | – | W | – | U | – | Low | ||
| 6 | External Temperature 4 | KNX probe temperature on bus | To see the temperature read by a KNX sensor con- nected to the bus (to see the temperatures measured by thermostats A/B with Well-Contact Suite software, objects nos. 10/11 should be used) | 2 byte | C | – | W | – | U | – | Low | ||
| 7 | External Temperature 5 | KNX probe temperature on bus | To see the temperature read by a KNX sensor con- nected to the bus (to see the temperatures measured by thermostats A/B with Well-Contact Suite software, objects nos. 10/11 should be used) | 2 byte | C | – | W | – | U | – | Low | ||
| COMMUNICATION OBJECTS | |||||||||||||
| 8 | External Temperature 6 | KNX probe temperature on bus | To see the temperature read by a KNX sensor con- nected to the bus (to see the temperatures measured by thermostats A/B with Well-Contact Suite software, objects nos. 10/11 should be used) | 2 byte | C | – | W | – | U | – | Low | ||
| 9 | External Temperature 7 | KNX probe temperature on bus | To see the temperature read by a KNX sensor con- nected to the bus (to see the temperatures measured by thermostats A/B with Well-Contact Suite software, objects nos. 10/11 should be used) | 2 byte | C | – | W | – | U | – | Low | ||
| 10 | External Temperature 8 | KNX probe temperature on bus | To see the temperature read by a KNX sensor con- nected to the bus (to see the temperatures measured by thermostats A/B with Well-Contact Suite software, objects nos. 10/11 should be used) | 2 byte | C | – | W | – | U | – | Low | ||
| 11 | Current Temperature | A: Temperature | To see the current temperature associated with ther- mostat-A (weighted average of the various associated probes): this object is used with Well-Contact Suite software to see the temperature measured by thermo- stat A | 2 byte | C | R | – | T | – | – | Low | ||
| 12 | Current Temperature | B: Temperature | To see the current temperature associated with ther- mostat-B (weighted average of the various associated probes): this object is used with Well-Contact Suite software to see the temperature measured by thermo- stat B | 2 byte | C | R | – | T | – | – | Low | ||
| THERMOSTAT A: | |||||||||||||
| 13 | Comfort | A: Mode – control | To select COMFORT operating mode by sending a 1 bit or to set the thermostat to STANDBY by sending a 0 bit | 1 bit | C | – | W | – | U | – | Low | ||
| 14 | Energy Saving | A: Mode – control | To select ECONOMY operating mode by sending a 1 bit (a 0 bit is ignored) | 1 bit | C | – | W | – | U | – | Low | ||
| 15 | Protected | A: Mode – control | To select OFF-ANTIFREEZE operating mode (or Too Hot in the case of air conditioning) by sending a 1 bit. | 1 bit | C | – | W | – | U | – | Low | ||
| 16 | Off | A: Mode – control | To select OFF operating mode by sending a 1 bit (a 0 bit is ignored) | 1 bit | C | R | W | – | U | – | Low | ||
| 17 | Thermostat Mode | A: Mode – control | To select operating mode by sending a Byte (1 = Comfort, 2 = StandBy, 3 = Economy, 4 = Protection). If you use supervision with Well Contact Suite this object must be associated with a group. | 1 byte | C | – | W | – | U | – | Low | ||
|
18 |
Thermostat Mode |
A: Mode – status | To read the set operating mode by sending a Byte (1 = Comfort, 2 = StandBy, 3 = Economy, 4 = Protection). If you use supervision with Well Contact Suite this object must be associated with a group. |
1 byte |
C |
R |
– |
T |
– |
– |
Low | ||
| No. | ETS name | Function | Description | Type | Flag 1 | Priority | |||||
| C | R | W | T | U | I | ||||||
| 19 | Status | A: Mid season – status | To read the seasonal mode set on the thermostat (0 = MS Not Active, 1 = MS Active) | 1 bit | C | R | – | T | – | – | Low |
| 20 | Enable | A: Mid season – control | To select the seasonal mode set on the thermostat (0 = MS Not active, 1 = MS Active) | 1 bit | C | – | W | – | U | – | Low |
| 21 | Status | A: Summer – Winter – status | To read the seasonal mode set on the thermostat (0 = Summer, 1 = Winter) | 1 bit | C | R | – | T | – | – | Low |
| 22 | Enable | A: Summer – Winter – control | To set the seasonal mode on the thermostat (1 = Winter, 0 = Summer). If it is NOT associated with a group then thermostat A will function in Neutral Zone mode. | 1 bit | C | – | W | – | U | – | Low |
| 23 | Thermostat Off | A: OFF communication – bus – control | This function is useful in the event of faults on the heat- ing system to disable the valves with a 1 bit. | 1 bit | C | – | W | – | U | – | Low |
|
24 |
Dewpoint |
A: Thermostat – control | If a 1 bit is sent to this object, the thermostat will show the specific icon on the display, turn OFF and stop the air conditioner (this works only in air conditioning mode and serves for example to avoid condensation on the floor) – Note: The thermostat requires a cyclical send to this object, with a time that can be set in the parameter “Dewpoint Supervision Time” |
1 bit |
C |
– |
W |
– |
U |
– |
Low |
| 25 | NOT USED | ||||||||||
| 26 | Current Setpoint | A: Setpoint – status | To read the temperature setpoint set on the thermostat. If you want Well-contact Suite to know the setpoint cur- rently set on the thermostats, this object must be linked to a group | 2 byte | C | R | – | T | – | – | Low |
|
27 |
Setpoint Shift |
A: Setpoint – status, control | To read and control a temperature shift with respect to the current setpoint (setpoint set by ETS on the thermo- stat for the various operating modes CMF, STBY, etc.). The temperature shift permitted is limited to the range set by the parameter: Guest Control Permitted. If parameter Guest Control Permitted is set to Off the “Setpoint Shift” object does not shift the active setpoint. |
2 byte |
C |
R |
W |
T |
– |
– |
Low |
| 28 | Winter Comfort | A: Setpoint – status, control | To read and set the Winter Comfort setpoint. | 2 byte | C | R | W | T | U | – | Low |
| 29 | Winter Standby | A: Setpoint – status, control | To read and set the Winter Standby setpoint | 2 byte | C | R | W | T | U | – | Low |
| 30 | Winter Energy Saving | A: Setpoint – status, control | To read and set the Winter Economy setpoint | 2 byte | C | R | W | T | U | – | Low |
| 31 | Winter Protected | A: Setpoint – status, control | To read and set the Winter Antifreeze setpoint | 2 byte | C | R | W | T | U | – | Low |
| 32 | Summer Comfort | A: Setpoint – status, control | To read and set the Summer Comfort setpoint | 2 byte | C | R | W | T | U | – | Low |
| 33 | Summer Standby | A: Setpoint – status, control | To read and set the Summer Standby setpoint | 2 byte | C | R | W | T | U | – | Low |
| 34 | Summer Energy Saving | A: Setpoint – status, control | To read and set the Summer Economy setpoint | 2 byte | C | R | W | T | U | – | Low |
| 35 | Summer Protected | A: Setpoint – status, control | To read and set the Summer Too Hot setpoint (power-off of climate control if the window is opened, for instance) | 2 byte | C | R | W | T | U | – | Low |
| 36 | NOT USED | ||||||||||
| 37 | NOT USED | ||||||||||
| 38 | NOT USED | ||||||||||
| Thermostat A: Valves | |||||||||||
| 39 | Cooling/Heating Valve | A: Valve | If the “Valve” parameter is set for 2-pipe systems for valve management: to be used to control the head of a radiating system or the On/Off valve of a fan coil | 1 bit | C | R | – | T | – | – | Low |
| 40 | NOT USED | ||||||||||
| 41 | NOT USED | ||||||||||
| 42 | NOT USED | ||||||||||
| Thermostat A: Fan | |||||||||||
| 43 | Proportional (0-100%) | A: Fan Inputs | Used to set a proportional speed for the fan coil fan (if the selected fan is proportional with 3 speeds) via a su- pervisor (e.g., touch screen) | 1 byte | C | – | W | – | U | – | Low |
| No. | ETS name | Function | Description | Type | Flag 1 | Priority | |||||||
| C | R | W | T | U | I | ||||||||
| 44 | NOT USED | ||||||||||||
| 45 | V1 speed | A: Fan Inputs | Used to force activation of fan coil speed V1 (if the selected fan has 3 speeds) | 1 bit | C | – | W | – | U | – | Low | ||
| 46 | V2 speed | A: Fan Inputs | Used to force activation of fan coil speed V2 (if the selected fan has 3 speeds) | 1 bit | C | – | W | – | U | – | Low | ||
| 47 | V3 speed | A: Fan Inputs | Used to force activation of fan coil speed V3 (if the selected fan has 3 speeds) | 1 bit | C | – | W | – | U | – | Low | ||
| 48 | Automatic | A: Fan Inputs | Used to force activation of fan coil speed AUTO (if the selected fan has 3 speeds) | 1 bit | C | – | W | – | U | – | Low | ||
| 49 | NOT USED | ||||||||||||
| 50 | Off | A: Fan Outputs | Used to read the deactivation status of all 3 speeds (if the selected fan has 3 speeds). The thermostat sends a 1 bit when the fan is off (fan coil speed 0). | 1 bit | C | R | – | T | – | – | Low | ||
| 51 | V1 speed | A: Fan Outputs | This is the object to pair with the relay of speed 1 of the fan coil (to read the status of speed V1 of the fan coil, this object can be polled by the bus) | 1 bit | C | R | – | T | – | – | Low | ||
| 52 | V2 speed | A: Fan Outputs | This is the object to pair with the relay of speed 2 of the fan coil (to read the status of speed V2 of the fan coil, this object can be polled by the bus) | 1 bit | C | R | – | T | – | – | Low | ||
| 53 | V3 speed | A: Fan Outputs | This is the object to pair with the relay of speed 3 of the fan coil (to read the status of speed V3 of the fan coil, this object can be polled by the bus) | 1 bit | C | R | – | T | – | – | Low | ||
| COMMUNICATION OBJECTS | |||||||||||||
| 54 | V1 speed | A: Fan Disable | To disable speed V1 (if the selected fan has 3 speeds) | 1 bit | C | R | W | T | U | – | Low | ||
| 55 | V2 speed | A: Fan Disable | To disable speed V2 (if the selected fan has 3 speeds) | 1 bit | C | R | W | T | U | – | Low | ||
| 56 | V3 speed | A: Fan Disable | To disable speed V3 (if the selected fan has 3 speeds) | 1 bit | C | R | W | T | U | – | Low | ||
| Thermostat A: Window | |||||||||||||
| 57 | Window Sensor | A: Window | Object to be paired with the input to which a win- dow-contact is connected so that the thermostat switches to OFF-PROTECTED when the window is opened, depending on whether the mode is Air Condi- tioning or Heating | 1 bit | C | – | W | – | U | – | Low | ||
| Thermostat A: Scenario | |||||||||||||
| 58 | Scenario | A: Scenario | To activate a scenario with a 1 Byte message | 1 byte | C | – | W | – | U | – | Low | ||
| Thermostat A: Auto/Man | |||||||||||||
| 59 | Temperature: Automatic/Manual | A: Manual operation | To see whether the guest has altered the thermostat temperature setpoint with respect to the default setting | 1 bit | C | R | – | T | – | – | Low | ||
| 60 | Fan coil: Automatic/Manual | A: Manual operation | To see whether the guest has altered the fan coil speed with respect to the default setting | 1 bit | C | R | – | T | – | – | Low | ||
| 61 | Temperature: Disable Local operation | A: Manual operation | Activating this object prevents the guest from altering the setpoint temperature by means of the thermostat buttons with respect to the value set by the bus | 1 bit | C | – | W | – | U | – | Low | ||
| 62 | Fan coil: Disable Local Operation | A: Manual operation | Activating this object prevents the guest from altering the fan coil speed by means of the thermostat buttons with respect to the value set by the bus | 1 bit | C | – | W | – | U | – | Low | ||
| Thermostat A: Floor Probe Alarm | |||||||||||||
| 63 | Temperature Floor | A: Alarm | If the temperature limitation is active an alarm is sent when the temperature exceeds the set threshold | 1 bit | C | R | – | T | – | – | Low | ||
| THERMOSTAT B: | |||||||||||||
| 64 | Comfort | B: Mode – control | To select COMFORT operating mode by sending a 1 bit or to set the thermostat to STANDBY by sending a 0 bit | 1 bit | C | – | W | – | U | – | Low | ||
| 65 | Energy Saving | B: Mode – control | To select ECONOMY operating mode by sending a 1 bit (a 0 bit is ignored) | 1 bit | C | – | W | – | U | – | Low | ||
| No. | ETS name | Function | Description | Type | Flag 1 | Priority | |||||
| C | R | W | T | U | I | ||||||
| 66 | Protected | B: Mode – control | To select ANTIFREEZE operating mode (or Too Hot in the case of air conditioning) by sending a 1 bit. | 1 bit | C | – | W | – | U | – | Low |
| 67 | Off | B: Mode – control | To select OFF operating mode by sending a 1 bit (a 0 bit is ignored) | 1 bit | C | R | W | – | U | – | Low |
| 68 | Thermostat Mode | B: Mode – control | To select operating mode by sending a Byte (1 = Comfort, 2 = StandBy, 3 = Economy, 4 = Protection). If you use supervision with Well Contact Suite this object must be associated with a group. | 1 byte | C | – | W | – | U | – | Low |
|
69 |
Thermostat Mode |
B: Mode – status | To read the set operating mode by sending a Byte (1 = Comfort, 2 = StandBy, 3 = Economy, 4 = Protection). If you use supervision with Well Contact Suite this object must be associated with a group. |
1 byte |
C |
R |
– |
T |
– |
– |
Low |
| 70 | Status | B: Mid season – status | To read the seasonal mode set on the thermostat (0 = MS Not Active, 1 = MS Active) | ||||||||
| 71 | Enable | B: Mid season – control | To select the seasonal mode set on the thermostat (0 = MS Not active, 1 = MS Active) | ||||||||
| 72 | Status | B: Summer – Winter – status | To read the seasonal mode set on the thermostat (0 = Summer, 1 = Winter) | 1 bit | C | R | – | T | – | – | Low |
| 73 | Enable | B: Summer – Winter – control | To set the seasonal mode on the thermostat (1 = Winter, 0 = Summer). If it is NOT associated with a group then thermostat B will function in Neutral Zone mode. | 1 bit | C | – | W | – | U | – | Low |
| 74 | Thermostat Off | B: OFF communication – bus – control | This function is useful in the event of faults on the heat- ing system to disable the valves with a 1 bit. | 1 bit | C | – | W | – | U | – | Low |
|
75 |
Dewpoint |
B: Thermostat – control | If a 1 bit is sent to this object, the thermostat will show the specific icon on the display, turn OFF and stop the air conditioner (this works only in air conditioning mode and serves for example to avoid condensation on the floor) – Note: The thermostat requires a cyclical send to this object, with a time that can be set in the parameter “Dewpoint Supervision Time” |
1 bit |
C |
– |
W |
– |
U |
– |
Low |
| 76 | NOT USED | ||||||||||
| 77 | Current Setpoint | B: Setpoint – status | To read the temperature setpoint set on the thermostat. If you want Well-contact Suite to know the setpoint cur- rently set on the thermostats, this object must be linked to a group | 2 byte | C | R | – | T | – | – | Low |
|
78 |
Setpoint Shift |
B: Setpoint – status, control | To read and control a temperature shift with respect to the current setpoint (setpoint set by ETS on the thermo- stat for the various operating modes CMF, STBY, etc.). The temperature shift permitted is limited to the range set by the parameter: Guest Control Permitted. If param- eter Guest Control Permitted is set to Off the “Setpoint Shift” object does not shift the active setpoint. |
2 byte |
C |
R |
W |
T |
– |
– |
Low |
| 79 | Winter Comfort | B: Setpoint – status, control | To read and set the Winter Comfort setpoint. | 2 byte | C | R | W | T | U | – | Low |
| 80 | Winter Standby | B: Setpoint – status, control | To read and set the Winter Standby setpoint | 2 byte | C | R | W | T | U | – | Low |
| 81 | Winter Energy Saving | B: Setpoint – status, control | To read and set the Winter Economy setpoint | 2 byte | C | R | W | T | U | – | Low |
| 82 | Winter Protected | B: Setpoint – status, control | To read and set the Winter Antifreeze setpoint | 2 byte | C | R | W | T | U | – | Low |
| 83 | Summer Comfort | B: Setpoint – status, control | To read and set the Summer Comfort setpoint | 2 byte | C | R | W | T | U | – | Low |
| 84 | Summer Standby | B: Setpoint – status, control | To read and set the Summer Standby setpoint | 2 byte | C | R | W | T | U | – | Low |
| 85 | Summer Energy Saving | B: Setpoint – status, control | To read and set the Summer Economy setpoint | 2 byte | C | R | W | T | U | – | Low |
| 86 | Summer Protected | B: Setpoint – status, control | To read and set the Summer Too Hot setpoint (power-off of climate control if the window is opened, for instance) | 2 byte | C | R | W | T | U | – | Low |
| 87 | NOT USED | ||||||||||
| Thermostat B: Valves | |||||||||||
| 90 | Cooling/Heating Valve | B: Valve | If the “Valve” parameter is set for 2-pipe systems for valve management: to be used to control the head of a radiating system or the On/Off valve of a fan coil | 1 bit | C | R | – | T | – | – | Low |
| No. | ETS name | Function | Description | Type | Flag 1 | Priority | |||||||
| C | R | W | T | U | I | ||||||||
| Thermostat B: Fan | |||||||||||||
| 94 | Proportional (0-100%) | B: Fan Inputs | Used to set a proportional speed for the fan coil fan (if the selected fan is proportional or 8-bit with 3 speeds) via a supervisor (e.g., touch screen) | 1 byte | C | – | W | – | U | – | Low | ||
| 95 | NOT USED | ||||||||||||
| 96 | V1 speed | B: Fan Inputs | Used to force activation of fan coil speed V1 (if the selected fan has 3 speeds) | 1 bit | C | – | W | – | U | – | Low | ||
| 97 | V2 speed | B: Fan Inputs | Used to force activation of fan coil speed V2 (if the selected fan has 3 speeds) | 1 bit | C | – | W | – | U | – | Low | ||
| 98 | V3 speed | B: Fan Inputs | Used to force activation of fan coil speed V3 (if the selected fan has 3 speeds) | 1 bit | C | – | W | – | U | – | Low | ||
| 99 | Automatic | B: Fan Inputs | Used to force activation of fan coil speed AUTO (if the selected fan has 3 speeds) | 1 bit | C | – | W | – | U | – | Low | ||
| 100 | Proportional (0-100%) | B: Fan Outputs | Used to read the proportional speed of the fan coil fan (if the selected fan is proportional or 8-bit with 3 speeds). This object is used for controlling proportional actuators. | 1 byte | C | R | – | T | – | – | Low | ||
| 101 | Off | B: Fan Outputs | Used to read the deactivation status of all 3 speeds (if the selected fan has 3 speeds). The thermostat sends a 1 bit when the fan is off (fan coil speed 0). | 1 bit | C | R | – | T | – | – | Low | ||
| COMMUNICATION OBJECTS | |||||||||||||
| 102 | V1 speed | B: Fan Outputs | This is the object to pair with the relay of speed 1 of the fan coil (to read the status of speed V1 of the fan coil, this object can be polled by the bus) | 1 bit | C | R | – | T | – | – | Low | ||
| 103 | V2 speed | B: Fan Outputs | This is the object to pair with the relay of speed 2 of the fan coil (to read the status of speed V2 of the fan coil, this object can be polled by the bus) | 1 bit | C | R | – | T | – | – | Low | ||
| 104 | V3 speed | B: Fan Outputs | This is the object to pair with the relay of speed 3 of the fan coil (to read the status of speed V3 of the fan coil, this object can be polled by the bus) | 1 bit | C | R | – | T | – | – | Low | ||
| 105 | V1 speed | B: Fan Disable | To disable speed V1 (if the selected fan has 3 speeds) | 1 bit | C | R | W | T | U | – | Low | ||
| 106 | V2 speed | B: Fan Disable | To disable speed V2 (if the selected fan has 3 speeds) | 1 bit | C | R | W | T | U | – | Low | ||
| 107 | V3 speed | B: Fan Disable | To disable speed V3 (if the selected fan has 3 speeds) | 1 bit | C | R | W | T | U | – | Low | ||
| Thermostat B: window | |||||||||||||
|
108 |
Window Sensor |
B: Window | Object to be paired with the input to which a win- dow-contact is connected so that the thermostat switches to OFF-PROTECTED when the window is opened, depending on whether the mode is Air Condi- tioning or Heating |
1 bit |
C |
– |
W |
– |
U |
– |
Low | ||
| Thermostat B: scenario | |||||||||||||
| 109 | Scenario | B: Scenario | To activate a scenario with a 1 Byte message | 1 byte | C | – | W | – | U | – | Low | ||
| Thermostat B: Auto/Man | |||||||||||||
| 110 | Temperature: Automatic/Manual | B: Manual operation | To see whether the guest has altered the thermostat temperature setpoint with respect to the default setting | 1 bit | C | R | – | T | – | – | Low | ||
| 111 | Fan coil: Automatic/Manual | B: Manual operation | To see whether the guest has altered the fan coil speed with respect to the default setting | 1 bit | C | R | – | T | – | – | Low | ||
| 112 | Temperature: Disable Local operation | B: Manual operation | Activating this object prevents the guest from altering the setpoint temperature by means of the thermostat buttons with respect to the value set by the bus | 1 bit | C | – | W | – | U | – | Low | ||
| 113 | Fan coil: Disable Local Operation | B: Manual operation | Activating this object prevents the guest from altering the fan coil speed by means of the thermostat buttons with respect to the value set by the bus | 1 bit | C | – | W | – | U | – | Low | ||
| No. | ETS name | Function | Description | Type | Flag 1 | Priority | |||||
| C | R | W | T | U | I | ||||||
| Thermostat B: Floor Probe Alarm | |||||||||||
| 114 | Temperature Floor | B: Alarm | If the temperature limitation is active an alarm is sent when the temperature exceeds the set threshold | 1 bit | C | R | – | T | – | – | Low |
| GLOBAL | |||||||||||
| 107 | NOT USED | ||||||||||
| 108 | NOT USED | ||||||||||
| 121 | Value | Humidity | To know and view the humidity read by a KNX probe connected to the bus | 1 byte | C | – | W | – | U | – | Low |
| 121 | Value | Humidity | To know and view the humidity read by a KNX probe connected to the bus (*) | 2 byte | C | – | W | – | U | – | Low |
| 122 | Make up room (MUR) | 1 bit | C | – | W | – | U | – | Low | ||
| 123 | Do not disturb (DND) | 1 bit | C | – | W | – | U | – | Low | ||
| 124 | Scenario (Star version) | 1 bit | C | – | W | – | U | – | Low | ||
| Number of communication objects | Max. number of group addresses | Max. number of associations |
| 109 | 254 | 255 |
| ETS text | Values available | Comment |
| [Default value] | ||
|
Type of thermostat | You can choose be- tween the .F, .S and .H articles that can be recognised by the icon on the top left of the device | |
|
Value shown on the display | 0 = Show Room tem- perature | You can choose whether to view on the display: the tem- perature measured, the fan coil speed and the valve status, no information, the temperature delta compared to the Setpoint set by the project |
| 1 = Current setpoint | ||
| 2 = Display Off | ||
| 3 = View Setpoint Dif- ference | ||
| [0] | ||
| Visibility of operating modes | Yes | Possibility of disabling the operating mode setting button on the display |
| No | ||
| [Yes] | ||
|
Heating icon visible | Yes | Possibility of disabling the heating icon on the display |
| No | ||
| [Yes] | ||
|
Cooling icon visible | Yes | Possibility of disabling the air conditioning icon on the display |
| No | ||
| [Yes] | ||
| Button Activation | 0 = Enable | You can choose whether to make the thermostat buttons operative |
| 1 = Disable | ||
| [0] | ||
| Temperature Unit of meas- ure | 0 = Celsius | Only for the display |
| 1 = Fahrenheit | ||
| [0] | ||
| Percentage displayed | 0 = None | To view the humidity on the display as a percentage or a 2 Byte value |
| 1 = Humidity | ||
| 2 = Percentage | ||
| [1] | ||
| Mid Season Management | 0 = Enable | To invert primary and secondary |
| 1 = Disable | ||
| [0] | ||
| External Temperature Sensor | Yes | To enable a possible external temperature sensor |
| No | ||
| [Yes] | ||
|
Brightness control | 0 = Manual | You can choose between Automatic control, based on the brightness sensor on the thermostat, or Manual, for which we recommend you set the Brightness level OFF < than the Brightness level ON. |
| 1 = Automatic | ||
| [0] |
Backlighting
Backlighting Parameters
| ETS text | Values available [Default value] | Comment |
|
Background colour | 0 = Default Colours | To choose whether to use default colours or to cus- tomise them by setting RGB values |
| 1 = Customised Colours | ||
| [0] | ||
| Colour | To set the colour |
Digital Input
Digital Input Parameters
| ETS text | Values available | Comment |
| [Default value] | ||
| Input Function | 0 = General Use | If set as “General use”, it also sends 0/1 over the bus towards a supervisor |
| 1 = Window Sensor | ||
| [0] | ||
|
Function (for gener- al use) | 0 = Switching on Rising Edge | Rising edge = close contact |
| 1 = Toggle on Rising Edge | Falling edge = open contact | |
| 2 = Switching on Falling Edge | Switching = sends a 1 bit value (On/Off) on opening and the opposite on closing | |
| 3 = Toggle on Falling Edge | Toggle = on every defined edge (opening or closure), On and then Off is sent to the cycle | |
| 4 = Status Send | To send the contact status upon each switching and also cyclically. | |
| [0] | ||
| Window Sensor Mode (for thermo- stat-A and thermo- stat-B) | 0 = Deactivated | Defines whether the window sensor is normally open or closed. |
| 1 = Normally Open | ||
| 2 = Normally Closed | ||
| [0] | ||
Internal/External Temperature Sensor (Thermostat-A, Thermostat-B)
Sensor parameters
| Thermostat-B) Sensor parameters | ETS text | Values available | Comment | ||||
| [Default value] | |||||||
|
Send on Change |
0.. 1.0 °C |
Sets the minimum measured tem- perature change with respect to the setpoint that will cause the thermostat to send the current value over the bus to a supervisor. | |||||
| ETS text | Values available | Comment | |||||
| [Default value] | |||||||
| Temperature Offset | -2 °C…. +2 °C | Calibration of thermo- stat reading (or of average of probes) | |||||
| [0] |
[0 = Off] | ||||||
|
Cyclic Send Time | 0…30 min. | 0=Off. Activates cyclic send of object no. 0 “In- ternal Sensor” or no. 1 “External Sen- sor” (both for the thermostat A and for thermostat B) | |||||
| [0 = Off] | |||||||
Continued
Note: If you use the Well Contact Suite supervision system to update the value displayed by the supervision station of the “A/B Current Temperature” linked to objects nos. 10 and 11, you must enable cyclic send or send on change. In the event of a conjunction of a high number of thermostats, it is not advisable to enable numerous cyclic sends with timing that is too low to avoid overloading the BUS communications.
Thermostat (A/B) Guest control permitted
| ETS text | Values available | Comment | ETS text | Values available | Comment | ||
| [Default value] | [Default value] | ||||||
| 0 = Off | 0.1, 0.2….1 | For thermostat, A setpoint shift step upon receipt of control on objects 115 and 116 | |||||
| 1 = 1.0 °C | Setpoint shift step | ||||||
| 2 = 2.0 °C | [1] | ||||||
| Determine how much the | |||||||
| 3 = 3.0 °C | |||||||
| Guest control per- | guest can change the set- | ||||||
| mitted | 4 = 4.0 °C | point from the value set on | |||||
| the thermostat (up/down) | |||||||
| 5 = 5.0 °C | |||||||
| 6 = None Limitation | |||||||
| [3] | |||||||
Current Temperature (A/B)
| ETS text | Values available | Comment |
| [Default value] | ||
|
Temperature sen- sor weightings | 0… 100 | For the thermostat’s internal sensor, the Vimar wired NTC probe (if present) and the KNX probes, this determines the relative importance for calculating the weighted av- erage of the measured tem- peratures |
| [0] | ||
|
Cyclic Send Time | 0 = Off | Sets the frequency in minutes with which the thermostat (A/B) must send the measured tem- perature value (or the weighted average of the probes) over the bus to a supervisor. Activates cyclic send of object no. 10 and 11 “Current Temperature” of thermostat A/B |
| 11 = 30 min. | ||
| [0 = Off] | ||
|
Send on Change | 0 = Off | Sets the temperature difference measured by the thermostat (A/B) that results in the read val- ue (or the weighted average of the probes) being sent over the bus towards a supervisor. Acti- vates cyclic send of object no. 10 and 11 “Current Tempera- ture” of thermostat A/B |
| 1.0 = 1.0 °C | ||
| [0 = Off] |
| ETS text | Values available | Comment |
| [Default value] | ||
|
Mode at bus power on | 1 = Comfort |
Thermostat operating mode at bus power on |
| 2 = Standby | ||
| 3 = Energy saving | ||
| 4 = Protect | ||
| 255 = Last Mode Selected | ||
| [255] | ||
|
Time between Heating and Cooling | 1 min. |
To avoid the formation of condensation with radiating systems during changes of season |
| 10 min. | ||
| 15 min. | ||
| 20 min. | ||
| 25 min. | ||
| 30 min. | ||
| 45 min. | ||
| 60 min. | ||
| [30] | ||
|
Dewpoint Supervision Time | 0 = Off | Sets the time within which the thermostat must receive a message to the “Dewpoint” object from a device connected to a humidistat. A bit set to “1” will stop heating/air conditioning and set to “0” will cause it to restart. If messages have not arrived, when this time has elapsed heating/air con- ditioning will restart |
| 30 sec | ||
| 1 min. | ||
| 2 min. | ||
| 3 min. | ||
| 4 min. | ||
| 5 min. | ||
| 10 min. | ||
| 15 min. | ||
| 20 min. | ||
| 25 min. | ||
| 30 min. | ||
| [0 = Off] | ||
|
Cyclic Send Time | 0 = Off |
Sets the time for cyclic sending of temperature setpoint over bus towards a supervisor |
| 30 sec. | ||
| 1 min. | ||
| 2 min. | ||
| 3 min. | ||
| 4 min. | ||
| 5 min. | ||
| 10 min. | ||
| 15 min. | ||
| 20 min. | ||
| 25 min. | ||
| 30 min. | ||
| [0 = Off] | ||
|
Send on Change | 0 = Off |
Sets the minimum temper- ature change made by the guest with respect to the setpoint that results in the current setpoint being sent over the bus towards a supervisor |
| 0.1 °C | ||
| 0.2 °C | ||
| 0.3 °C | ||
| 0.4 °C | ||
| 0.5 °C | ||
| 0.6 °C | ||
| 0.7 °C | ||
| 0.8 °C | ||
| 0.9 °C | ||
| 1.0 °C | ||
| [0 = Off] | ||
|
Reset Setpoint Shift in Economy Mode | Yes | By selecting “Yes”, when the thermostat goes into Energy Saving (Economy) mode, the setpoint set by the user in Comfort and Standby mode is reset to the design default value. This function is useful for hotel appli- cations and with the Well Contact Suite supervision software. |
| No | ||
| [Yes] |
Important: The “Time between Heating and Cooling” parameter is the wait time it takes for the thermostat to switch from summer-winter and vice versa. This parameter is especially useful in some underfloor radiant systems where you set a high time value to prevent the formation of condensation; this applies especially when the thermostats work with a neutral zone and so there could be multiple seasonal changes in a single day. If instead, depending on the type of system, you want a faster response of the thermostat, it is necessary to reduce the value of this parameter.
Temperature Setpoint (A/B) Sensor parameters
| ETS text | Values available | Comment |
| [Default value] | ||
| Winter Comfort Setpoint | [20] | See “Range” table |
| Winter Standby Setpoint | [18] | See “Range” table |
| Winter Energy Saving Setpoint | [15] | See “Range” table |
|
Antifreeze | 0 = Control Off | If you set “On” you can set the temperature the thermostat goes to in “Protected” mode; if you set “Off”, when the thermostat is in “Protected” mode it will turn off tempera- ture control and will not send the current setpoint temperature |
| 1 = Control On | ||
| [1 = 011] | ||
| Summer Comfort Setpoint | [25] | See “Range” table |
| Summer Standby Setpoint | [28] | See “Range” table |
| Summer Energy Saving Setpoint | [30] | See “Range” table |
Setpoint range
| Temp. °C | Temp. °C | Temp. °C | Temp. °C |
| 5 | 16 | 27 | 38 |
| 6 | 17 | 28 | 39 |
| 7 | 18 | 29 | 40 |
| 8 | 19 | 30 | 41 |
| 9 | 20 | 31 | 42 |
| 10 | 21 | 32 | 43 |
| 11 | 22 | 33 | 44 |
| 12 | 23 | 34 | 45 |
| 13 | 24 | 35 | |
| 14 | 25 | 36 | |
| 15 | 26 | 37 |
CAUTION: When the thermostat is in Neutral Zone mode, the breadth of this must be progressively increasing for the different operating modes of Comfort (minimum neutral zone breadth), Standby, Energy Saving, and Protected. This setting made with ETS ensures that, when the thermostat changes operating mode, the active setpoint is always at a suitable value and the thermostat does not start cooling if it was heating before or vice versa, causing considerable energy consumption.
| ETS text | Values available | Comment | |
| [Default value] | |||
| If you set “On” | |||
| 0 = Control Off | you can set the temperature the | ||
| thermostat goes to in | |||
| “Protected” mode; if | |||
| Too hot | 1 = Control On | you set “Off”, when the thermostat is in | |
| “Protected” mode it | |||
| will turn off tempera- | |||
| [1 = On] | ture control and will not send the current | ||
| setpoint temperature |
Note: In the case of a 4-pipe system, the winter setpoint cannot take a higher value than the summer setpoint.
| ETS text | Values available | Comment |
| [Default value] | ||
| Window sensor delay | 0 = Off | Sets the time delay that heating/air conditioning stops after window open detection |
| 8 = 120 sec. | ||
| [4 = 30] |
| ETS text | Values available | Comment |
| [Default value] | ||
| Control Temperature | 0 = Control On/Off | Set according to the type of control required for the heat- ing/air conditioning system |
| 1 = Integral Band | ||
| 2 = Proportional/Integral Band | ||
| [0] | ||
|
Value Proportional Cooling | 1.0 °C |
To be set according to the characteristics of the system and the room (consult a heating engineer) |
| 1.1 °C | ||
| 1.2 °C | ||
| 1.3 °C | ||
| 1.4 °C | ||
| 1.5 °C | ||
| 1.6 °C | ||
| 1.7 °C | ||
| 1.8 °C | ||
| 2.0 °C | ||
| 2.2 °C | ||
| 2.5 °C | ||
| 3.0 °C | ||
| 3.5 °C | ||
| 4.0 °C | ||
| 4.5 °C | ||
| 5.0 °C | ||
| [3.0 °C] |
Continuous integral proportional: PI control with proportional valve
The parameters of the proportional and integral coefficients Kp and Ki are set using the ETS software: the proportional coefficient Kp for heating corresponds to the “Heating Proportional Value” parameter while the coefficient for cooling is set using the “Cooling Proportional Value” parameter. The integral time Ti is set with the “Heating Integral Value” and “Cooling Integral Value” parameters for heating and cooling, respectively. The PI control parameters should be set according to the type of heating or cooling system used, the size of the room and its thermal insulation.
IMPORTANT: Generally, when using fan coils, PI control is not used. The valve is typically managed with On/Off control and an On/Off valve or proportional valve (0%-100%); the fine adjustment is then made using the fan speed.
Proportional integral PWM: PI control with On/Off valve
Communication objects and ETS parameters
| ETS text | Values available | Comment |
| [Default value] | ||
|
Integral Cooling Value | 5 min. |
To be set according to the characteristics of the system and the room (consult a heating engineer) |
| 6 min. | ||
| 7 min. | ||
| 8 min. | ||
| 9 min. | ||
| 10 min. | ||
| 12 min. | ||
| 15 min. | ||
| 17 min. | ||
| 20 min. | ||
| 25 min. | ||
| 30 min. | ||
| 40 min. | ||
| 50 min. | ||
| 60 min. | ||
| 90 min. | ||
| 120 min. | ||
| [20 min.] | ||
|
Proportional Heating Value | 0 = Off | |
| 1.0 °C | ||
| 1.1 °C | ||
| 1.2 °C | ||
| 1.3 °C | ||
| 1.4 °C | ||
| 1.5 °C | ||
| 1.6 °C | ||
| 1.7 °C | ||
| 1.8 °C | ||
| 2.0 °C | ||
| 2.2 °C | ||
| 2.5 °C | ||
| 3.0 °C | ||
| 3.5 °C | ||
| 4.0 °C | ||
| 4.5 °C | ||
| 5.0 °C | ||
| [3.0 °C] | ||
|
Integral Heating Value | 0=Off | |
| 5 min. | ||
| 6 min. | ||
| 7 min. | ||
| 8 min. | ||
| 9 min. | ||
| 10 min. | ||
| 12 min. | ||
| 15 min. | ||
| 17 min. | ||
| 20 min. | ||
| 25 min. | ||
| 30 min. | ||
| 40 min. | ||
| 50 min. | ||
| 60 min. | ||
| 90 min. | ||
| 120 min. | ||
| [20 min.] | ||
|
Differential Coefficient | 0.1… 1.0 °C | For On/Off type control: set the thermostat (A/B) hysteresis that determines activation/deactivation of the system with reference to the difference between the setpoint and the measured temperature |
| [1=0.2] |
Valve (A/B) Valve parameters
| ETS text | Values available | Comment |
| [Default value] | ||
|
System Layout | 0 = 2-Pipe Circuit On/ Off |
Select according to the type of installed system |
| 1 = 4-Pipe Circuit On/ Off | ||
| 2 = 2 Pipes Proportional | ||
| 3 = 4 Pipes Proportional | ||
| [0] | ||
| Cyclic Send Time in Cooling | 0 = Off.. 30 min. | Sets the valve status send time to the associated actu- ators (parameter required for certain types of valves, for example Theben proportion- al valves, etc.) |
| [0] | ||
| Cyclic Send Time in Heating | 0 = Off.. 30 min. | |
| [0] |
2nd Heating/Cooling Stage (A/B) “Boost”
The second stage is used to control a second heating or cooling source that allows the “boost” function. The “boost” function enables the second auxiliary source when the current temperature differs from the current setpoint by more than the set threshold. In this way, the main heating/cooling stage is assisted by the auxiliary source to reach the desired setpoint value faster. This feature is particularly useful for improving comfort in dynamic lens systems such as underfloor systems.
2nd Stage Parameters
| ETS text | Values available | Comment |
| [Default value] | ||
|
2nd Stage Cooling Valve | Disabled | Second cooling stage off |
| Enable 2-point On-Off Control | Control with object that sends on/off for valve status | |
| Enable 2-point Control 0-100% | Control with object that sends 0% for valve off status and 100% for valve on status | |
| Cooling Threshold: – 0.5°C – 1.0°C – 1.5°C – 2.0°C – 2.5°C – 3.0°C – 3.5°C – 4.0°C – 4.5°C – 5.0°C |
Value of the trigger threshold in cooling mode | |
|
2nd Stage Heating Valve | Disabled | Second heating stage off. |
| Enable 2-point On-Off Control | Control with object that sends on/off for valve status | |
| Enable 2-point Control 0-100% | Control with object that sends 0% for valve off status and 100% for valve on status | |
| Heating Threshold: – 0.5°C – 1.0°C – 1.5°C – 2.0°C – 2.5°C – 3.0°C – 3.5°C – 4.0°C – 4.5°C – 5.0°C |
Value of the trigger threshold in heating mode |
Fan (A/B)
Fan parameters
| ETS text | Values available | Comment | ETS text | Values available | Comment | ||
| [Default value] | [Default value] | ||||||
|
Type |
0 = Off | No thermostat controlled fan coil. Disables the graphics for the fan on the thermostat too. Useful when controlling only the solenoid valve for a radiator system |
Time in Fan Man. Mode (min.) |
0…255 |
Duration of “Manual Forcing” for the fan speed if the guest has forced the speed; after this time the thermostat returns to automatic mode. If the parameter is set to “0” it is interpreted as “Time = infinite” and the fan speed, set manually, stays on. To restore automatic opera- tion the guest must return the fan speed to AUTO by manually operating on the thermostat display. | ||
| 1 = Three Speeds Fan coil | Fan coil with 3 speeds | ||||||
| 2 = Proportional (0 – 100%) | Proportional-speed fan coil |
[0] | |||||
| [1] | |||||||
| Maximum Fan Speed | 0 | Sets maximum fan coil speed. Set “0” to control only the solenoid valve for a radiator system | |||||
| 1 | |||||||
| 2 | |||||||
| 3 | |||||||
| [3] | |||||||
| Objects | 0 = 1-bit object | Select type of object (1 bit for On/Off, 8 bits for propor- tional 1-100%) | |||||
|
Threshold for Fan Speed. 2 | 0.2 °C |
Sets the difference between the current temperature and the setpoint that triggers start of speed V-2 | |||||
| 1 = 8-bit object (1-100%) | |||||||
| 0.3 °C | |||||||
| 0.5 °C | |||||||
| [0] | |||||||
| 1.0°C | |||||||
| Cyclic Send Time | 0 = Off | Set cyclical sending over the bus for the fans | |||||
| 1.5°C | |||||||
| 11 = 30 min. | |||||||
| 2.0 °C | |||||||
| [0 = Off] | |||||||
| 2.5 °C | |||||||
| Threshold for Speed at 100% | 0 = 2 °C | Absolute difference between setpoint and current tem- perature above which the speed goes to 100% | |||||
| 3.0 °C | |||||||
| 1 = 3 °C | |||||||
| 3.5 °C | |||||||
| 2 = 4 °C | |||||||
| 4.0 °C | |||||||
| 4 = 5 °C | |||||||
| [1.0] | |||||||
| [4] | |||||||
|
Threshold for Fan Speed. 3 | 0.2 °C |
Sets the difference between the current temperature and the setpoint that triggers start of speed V-3 | |||||
|
Minimum Fan Speed | 0 = 10% |
Minimum operating speed on fan activation | |||||
| 0.3 °C | |||||||
| 1 = 20% | |||||||
| 0.5 °C | |||||||
| 2 = 30% | |||||||
| 1.0°C | |||||||
| 3 = 40% | |||||||
| 1.5°C | |||||||
| 4 = 50% | |||||||
| 2.0 °C | |||||||
| [0] | |||||||
| 2.5 °C | |||||||
| Fans independent of the valve | Yes | Possibility of controlling the fans even with the valve off | |||||
| 3.0 °C | |||||||
| 3.5 °C | No | ||||||
| 4.0 °C | |||||||
| [No] | |||||||
| [2.0] | |||||||
| Automatic speed disabling | Yes | Possibility of disabling the fan button on the display and objects 43 and 90 (Au- tomatic) | |||||
|
Fan Speed Hysteresis | 0.1 °C |
Hysteresis for the above-mentioned speed values | |||||
| 0.2 °C | No | ||||||
| 0.3 °C | |||||||
| [No] | |||||||
| 0.4 °C | |||||||
| 0.5 °C | |||||||
| 0.6 °C | |||||||
| 0.7 °C | |||||||
| 0.8 °C | |||||||
| 0.9 °C | |||||||
| 1.0 °C | |||||||
| [1=0.1] | |||||||
| Switching Time between Speeds (min) | 0…255 | Time, in minutes, it takes to switch from one speed to another. | |||||
| [2] | |||||||
Continued
IMPORTANT: If you set “Switching Time between Speeds (min)” to 0 and leave a low value of “Fan Speed Hysteresis” (<0.5°C) there may be, near the speed change threshold temperatures, continual and repeated switching of the fan coil speeds that could damage it.
Communication objects and ETS parameters
Manual operation of the fans
The user selects the speed used by the thermostat only when the valve is on; if the valve is off at the time of selection, the thermostat saves the setting and uses it again the next time the valve is on. On the display, the fan speed changes from “AUTO” to “OFF”. The selection made by the user remains active until the end of the time (in minutes) set by the “Time in Manual Fan Mode (min)” parameter or the fan speed is set manually onto
Caution: If the “Time in Manual Fan Mode (min)” parameter is equal to 0 it means that the manual operation of the fan is never turned off by time.
In the case of a three-speed fan coil in “AUTO” mode, the fan coil speed is controlled automatically by the thermostat. The speed automatically goes from the higher to the lower speed gradually as the measured temperature approaches the value set as the setpoint. The threshold to determine the speed to set is linked to the following parameters: “Threshold for the Speed of Fan 2” and “Threshold for the Speed of Fan 3” while speed 1 is active when the valve is turned on and the “Switching time between speeds (min)“ has passed. An example of operation is shown in the following figure where SV2 and SV3 are respectively “Threshold for the Speed of Fan 2” and “Threshold for the Speed of Fan 3”; ΔTR is instead the “Differential Coefficient” of the on/off setting.
Note: In the example shown in the figure, the effect of the “Fan Speed Hysteresis” parameter was overlooked and the “Switching time between speeds” parameter was set = 0.
When the measured temperature reaches the setpoint the thermostat switches off the fan, sends a 1 bit on the Bus for object no. 45 or no. 92 “Off – Fan Outputs” (V0), switches on V0 and switches off V1. When the temperature deviates from the desired value, the valve is turned on and the speed V1, after the value of “Switching time between speeds”, is activated. In the following example figures, this parameter is set to 0.
N.B.: Fore reasons tied to the safety of systems, if the valve is active the user will be unable to set “OFF” from the thermostat. It will therefore be necessary to turn off the valve by setting the thermostat to another mode or by modifying its setpoint.
Switching Time Between Speeds
This is the time you need to wait for the activation of the speed after switching on the valve (allows the fan coil battery to reach the correct temperature before circulating the air). This parameter is also used between one-speed change and another to avoid continual speed switching near the thresholds.
Proportional fan coil operation
Proportional fan operation is similar to that of the three-speed fan coil. When the valve is OFF the proportional speed is equal to 0%; when the valve is ON the value of the proportional speed depends on the difference between the setpoint and the temperature measured in the room. The greater the difference, the higher the set proportional value of the speed. When this difference exceeds the value of the “Threshold for Speed at 100%” the proportional output of the fan is set to the highest possible speed that is 100%; when the difference is minimal the proportional speed is set to “Minimum Fan Speed”. The operation of the proportional fan, as for the three speeds, can be set automatically or, in manual mode, to the value invoked by the thermostat button or set by the object “Proportional (0-100%) – Fan Inputs”
N.B.: Fore reasons tied to the safety of systems, if the valve is active the user will be unable to set “OFF” from the thermostat. It will therefore be necessary to turn off the valve by setting the thermostat to another mode or by modifying its setpoint.
Scenario (A/B)
16 scenarios are available. 16 different scenarios can therefore be saved on the device output. With Enable Scenario Learning you can also set the status of the output for the desired scenario with a message from the bus (scene learn).
Scenario parameters
| ETS text | Values available | Comment |
| [Default value] | ||
| Scenario Learning | 0 = disable | To enable scenario thermo- stat learning |
| 1 = enable | ||
| [0] | ||
|
Scenario | 0=disabled | To define the operating mode when the scenario is called up. |
| 1=Comfort | ||
| 2=Standby | ||
| 3=Energy saving | ||
| 4=Protected | ||
| [0] | ||
|
…Scenario 16 | 0=disabled | To define the operating mode when the scenario is called up. |
| 1=Comfort | ||
| 2=Standby | ||
| 3=Energy saving | ||
| 4=Protected | ||
| [0] |
Temperature Protection (A/B)
This function is used to limit the temperature of the area controlled by the thermostat
Temperature Protection Parameters
With the “Temperature Channel” parameter you select the temperature to be monitored; when, in heating, it exceeds the value selected with the “Temperature Limit” parameter, the thermostat changes its operating mode and switches OFF sending an alarm signal with the object Floor Temperature Alarm. The thermostat comes out of the alarm condition when the temperature drops below the set threshold and the user changes the thermostat operating mode. The typical application for this function is that of limiting the maximum temperature of the floor.
| ETS text | Values available | Comment |
| [Default value] | ||
|
Temperature Channel | 0 = Disabled | Limitation disabled |
| 1 = Internal Sensor | The internal sensor is used for temperature limitation | |
| 2 = External Sensor | The external sensor is used for tempera- ture limitation | |
| 3 = External Temperature 1 | The External Tem- perature 1 is used for temperature limitation | |
| 4 = External Temperature 2 | The External Tem- perature 2 is used for temperature limitation | |
| 5 = External Temperature 3 | The External Tem- perature 3 is used for temperature limitation | |
| 6 = External Temperature 4 | The External Tem- perature 4 is used for temperature limitation | |
| 7 = External Temperature 5 | The External Tem- perature 5 is used for temperature limitation | |
| 8 = External Temperature 6 | The External Tem- perature 6 is used for temperature limitation | |
| 9 = External Temperature 7 | The External Tem- perature 7 is used for temperature limitation | |
| 10=External Temperature 8 | The External Tem- perature 8 is used for temperature limitation | |
| [0] | ||
|
Temperature Limit | 10…70 °C | Limit of the tempera- ture channel beyond which the limitation trips |
| [35] | ||
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