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37

FAQ

Thermostat

47. Is it possible to have a Boost function to supplement the 

heating? And will this make it possible to determine the 

3 speeds of the fan coil?

The section of the parameters referred to as "2

nd

 HEATING/

COOLING STAGE” illustrates how the thermostat is able to 

activate an additional system, which will only be on/off, or 

a control of a proportional valve 0-100% by means of the 

objects Nos. 36 and 37 which will appear by activating this 

Boost function. The thermostat is not able to manage the 

Boost function by determining the speeds with 3 relays so 

either it will be on/off or proportional 0-100% (whose possi-

ble value is either 0% for power-off or 100% for fully open).

48. Is it possible to operate an on/off head in winter and a 

3-speed fan coil in summer?

Yes, it is possible to control the underfloor heating and fan 

coil air-conditioning simply by setting the system type to 4 

pipes; the communication object no. 35 will then be dis-

played for the on/off control of the heating valve and object 

no. 34 for the on/off control of the cooling valve (in winter 

the fan coil valve-relay is not activated, as it is controlled 

by object no. 34 of the thermostat, so the fan coil will not 

switch on).

49. Is it possible to have the thermostat 02952 send a 1 

bit ON message when the thermostat turns off all the 

speeds?

Yes, and this function is required by some temperature con-

trol gateways to manage the Off of the fan coils when the 

thermostat has switched off the speeds: the communication 

object is No. 45 (No. 92 for Thermostat B) called "OFF - Fan 

outputs" and the thermostat automatically sends a bit=1 

when the fans are turned off and bit=0 when they are turned 

back on.

50. If the speeds of the fan coils are forced to OFF, will the 

thermostat reset to AUTO when it changes mode or 

simply when Well-contact Suite queries the room pock-

et to know whether the guest is present in the room?

When Well-contact Suite queries a pocket it responds with 

a bit equal to 0/1 on the same control group as the CMF/

STBY mode of the thermostat causing the mode control to 

be sent again. The thermostat is designed to reset forcing 

when it receives a mode control so it eliminates the forc-

ing-OFF of the fans; to work around this problem, in the ETS 

project you can remove the "U" flag of the object of CMF/

STBY and reprogram the thermostat so that the response 

sent from the pocket to the Well-contact Suite software is 

ignored.

51. Is it possible for the icon not to appear on the bottom 

left that allows viewing and controlling thermostat B?

Yes. For the icon not to be displayed it is sufficient to set 

the "Enable user interface" parameter of thermostat B to 

DISABLE.

52. How does the "Neutral Zone" mode function for a 4-pipe 

system?

If the "Enable Summer/Winter" object of thermostat A and/

or thermostat B is not paired with any ETS group, the 

thermostat in question will function in Neutral Zone mode; 

in this mode it will be the thermostat that activates the Air-

Conditioning or Heating circuit depending on the room tem-

perature, the Summer and Winter setpoints for the currently 

selected mode (CMF/STBY/etc.) with a room temperature 

range, called Neutral Zone, within which neither circuit will 

be activated. If the end user increases or decreases the 

setpoint by using the thermostat it will not change the two 

summer/winter setpoints but will change a setpoint that is 

halfway between those two values which is the central ref-

erence of the neutral zone; raising or lowering this value will 

also automatically increase or decrease the two setpoints 

related to summer/winter for the active mode (CMF/STBY) 

so as to keep the neutral zone unchanged. The thermostat 

activates the heating or air-conditioning according to the 

two summer/winter setpoints so, if the room temperature 

is not in the neutral zone, the thermostat will take as refer-

ence the setpoint that is closest to the current temperature 

(summer/winter) resulting in the activation of the heating or 

air-conditioning circuit.

53. What is the difference between firmware version 2.00 

and 2.01?

Firmware version 2.01 features improved neutral zone func-

tionality and checks have been added to prevent incorrect 

configurations of the thermostat. The "Don't display tem-

perature" view has been replaced by the "Current Setpoint” 

view. The "Reduced menu" feature has been added which 

limits the local mode change to only between comfort and 

protected. Lastly, the "Reset Setpoint Shift in Economy 

Mode” parameter has been added to enable or disable 

resetting the setpoint shift when the thermostat goes into 

energy saving mode.

FA

Q

Summary of Contents for 02952

Page 1: ...Installer manual BUILDING AUTOMATION 02952 KNX touch thermostat ...

Page 2: ...Index ...

Page 3: ...GENERAL CHARACTERISTICS AND FUNCTIONS from page 5 COMMUNICATION OBJECTS AND ETS PARAMETERS from page 7 FAQ from page 31 COMMUNICATION OBJECTS GENERAL CHARACTERISTICS AND FUNCTIONS FAQ ...

Page 4: ...4 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 ...

Page 5: ...t and the speed of the fan coil the configuration of the operating modes and the selection of thermostat A or B to view control it has an RGB backlit display whose colours can be adjusted via parameters with ETS Display icons Note In 4 pipe systems the display may show errors E1 E2 E3 E4 as illustrated on the next page Behaviour after bus power on off Bus power off Bus power on the status will be ...

Page 6: ...oint 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 s...

Page 7: ...0 11 should be used 2 byte C W U Low 8 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 9 External Temperature 8 KNX probe temperature on bus To see the temperature read by a KNX sensor con nected...

Page 8: ...Winter Standby setpoint 2 byte C R W T U Low 27 Winter Energy Saving A Setpoint status control To read and set the Winter Economy setpoint 2 byte C R W T U Low 28 Winter Protected A Setpoint status control To read and set the Winter Antifreeze setpoint 2 byte C R W T U Low 29 Summer Comfort A Setpoint status control To read and set the Summer Comfort setpoint 2 byte C R W T U Low 30 Summer Standby...

Page 9: ...TO if the selected fan has 3 speeds 1 bit C W U Low 44 Proportional 0 100 A Fan Outputs Used to read the proportional speed of the fan coil fan if the selected fan is proportional with 3 speeds with the 8 Bit Object Proportional 0 100 This object is used for controlling proportional actuators 1 byte C R T Low 45 Off A Fan Outputs Used to read the deactivation status of all 3 speeds if the selected...

Page 10: ...rating 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 64 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 b...

Page 11: ...R T Low 81 Cooling Heating Valve B Valve If the Valve parameter is set for 2 pipe proportional systems for proportional valve management to be used to control the head of a radiating system or for the proportional valve of a fan coil 1 byte C R T Low 81 Cooling Valve B Valve If the Valve parameter is set for 4 pipe proportional systems for Summer valve management to be used to control the head of ...

Page 12: ...V2 speed B Fan Disable To disable speed V2 if the selected fan has 3 speeds 1 bit C R W T U Low 98 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 99 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...

Page 13: ...by a KNX probe connected to the bus 2 byte C W U Low 115 Setpoint shift increase Setpoint To control an increase equivalent to setpoint shift step of the current current setpoint setpoint set by ETS on the thermostat for the various operating modes CMF STBY etc The temperature shift permitted is limited to the range set by the parameter Guest Control Permitted 1 bit C W U Low 116 Setpoint shift de...

Page 14: ...y of disa bling 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 units 0 Celsius Only for the display 1 Fahrenheit 0 Enable Menu 0 Disable If enabled the thermostat operating mode can be changed Th...

Page 15: ... Disable Button Activation Enable Display Current Temperature Setpoint Current Display Off View Difference Setpoint Note In View Setpoint Difference mode the difference between the Setpoint set via configuration by ETS and the Setpoint modified locally by the user is displayed When the set Setpoint is the design Setpoint the thermostat displays 0 0 COMMUNICATION OBJECTS ...

Page 16: ...ar Colour customisation Ecometer Mode 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...

Page 17: ...Vimar wired NTC probe if present and the KNX probes this determines the relative importance for calcu lating the weighted average of the measured temperatures 0 Cyclic Send Time 0 Off Sets the frequency in minutes with which the ther mostat A B must send the measured temperature value or the weighted average of the probes over the bus to a supervisor Activates cyclic send of object no 10 and 11 Cu...

Page 18: ... 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 ...

Page 19: ...hermostat 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 On Sensor parameters Temp C 5 6 7 8 9 10 11 12 13 14 15 Temp C 16 17 18 19 20 21 22 23 24 25 26 Temp C 27 28 29 30 31 32 33 34 35 36 37 Temp C 38 39 40 41 42 43 44 45 Setpoint range Note In the case of a ...

Page 20: ...S text Values available Comment Default value Temperature Control 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 Proportional Cooling Value 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...

Page 21: ...f thermal insulation and vice versa Integrative time used to calculate the coefficient Ki Kp Ti and corresponds to the time passed which when equal to the deviation from the setpoint error the integrative component generates a contribution equal to that generated by the proportional component The integral contribution reduces the error on full operation if thermal energy is lost in the room to be ...

Page 22: ...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...

Page 23: ...nd 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 2 Pipe Circuit On Off A B Valve parameters Proportional 2 Pipe Circuit A B Proportional 4 Pipe Circuit A B M M Installation of 2 pipe fan coil solenoid valve Installation ...

Page 24: ...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 w...

Page 25: ...ilable Comment Default value 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...

Page 26: ...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...

Page 27: ... 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 proport...

Page 28: ...rio 16 0 disabled To define the operating mode when the scenario is called up 1 Comfort 2 Standby 3 Energy saving 4 Protected 0 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 A B Scen...

Page 29: ...ature 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 Temper ature 1 The External Tem perature 1 is used for temperature limitation 4 External Temper ature 2 The External Tem perature 2 is used for temperature limitation 5 External Temper ature 3 The ...

Page 30: ...ep step Timed one position stable 1 Timed 0 On Delay 0 60min Mode Normal 10 sec Off Delay 0 60min 10 sec Duration 0 60min Mode Timed 10 sec Relay 0 Normally open Status of thermostat output at rest 1 Normally closed 1 N B The relay can be paired with the speed of the fan coil only in the case of 3 speed fan coils or proportional 3 speed fan coils but NOT in the case of proportional fan coils Relay...

Page 31: ...e other hand also inhibits Too Hot and Antifreeze and should never be used in normal installations The Off Mode object turns off the thermostat even if the temperature falls below zero i e it does not activate Heating Air conditioning It is advisable to use the Protected object which switches the thermostat to Off or protected Antifreeze depending on how the relevant parameters are set summer or w...

Page 32: ... one when it is closed If an N C contact is used it will be necessary to set Off for the falling edge opening of window and contact and On for the rising edge closing of the window and contact If the contact is an N O type the two parameters must be set respectively to On and Off when the window is opened the contact is closed and vice versa If you set the input as Window Sensor opening the window...

Page 33: ...Suite software what communication objects need to be set YOU have to set to Read the relevant flags of objects from 25 to 32 and from 72 to 79 for each 02952 thermostat 17 What is the parameter Time in Manual Fan Mode used for It is a time indicated in the parameters for which the ther mostat remains in Manual forcing if the guest has manually forced the temperatures or speed of the fan coil when ...

Page 34: ... of the temperatures that can be associated are used to read respectively the current temperatures of thermostats A B and not objects 0 and 9 of the device which are the precise measurement data for the individual internal external probes 25 Is it possible to eliminate the adjustment range in Comfort mode which can be expanded at the most to 5 C It is possible by setting the parameter Guest Contro...

Page 35: ...heating head and then another group with object no 18 summer winter status of the associated thermostat together with the object Logic 1 of relay 01523 In functional terms in winter the logic 1 of 01523 group is activated so when the other group i e that of object no 38 46 of the thermo stat relay On Off control also goes to 1 the relay 01523 will switch towards the head In summer the first of the...

Page 36: ...e set setpoint and the room temperature so it will activate the heating cooling or remain in the neutral zone depending on the heating and air conditioning setpoints of the current mode 42 You cannot change the thermostat mode from the Well Contact Suite software neither from supervision nor from the Master thermostat What can be done To send mode messages to the thermostats the Well contact Suite...

Page 37: ...ing OFF of the fans to work around this problem in the ETS project you can remove the U flag of the object of CMF STBY and reprogram the thermostat so that the response sent from the pocket to the Well contact Suite software is ignored 51 Is it possible for the icon not to appear on the bottom left that allows viewing and controlling thermostat B Yes For the icon not to be displayed it is sufficie...

Page 38: ...Viale Vicenza 14 36063 Marostica VI Italy www vimar com 02952IEN 01 2010 ...

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