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35

FAQ

Thermostat

mode because the guest cannot decide this directly. For 

example, the guest can force the thermostat to Off only by 

opening the window or can set it to standby only by leav-

ing the room (removing the card from the pocket reader).

33. If a 1-bit thermostat comfort/stby object is associated 

with the “Guest in room” pocket object, when the Well-

contact Suite software is started up, the thermostats 

that were in "Economy" or "Protected/Off" mode return 

automatically to STBY with higher setpoints.

  The “U” flag must be disabled in ETS for the thermostat 

object. If the "Guest in room" pocket object is associated 

with the 1bit "Stby/Comfort" thermostat object, when a guest 

enters the room goes to "Comfort" mode. If within the same 

group the "R" read flag is enabled on the pocket object to 

allow the presence of a guest in the room to be interrogated 

by the WCS software, when it starts, the software performs 

interrogation polling on this group and the pocket responds 

with a "0" bit for the "Guest in room" object. If the flag "U" is 

active in that thermostat object, it takes the pocket response 

as an update for its operating mode and goes to Stby when 

perhaps it had been set to "Economy" mode or "Protected/

Off" mode for an extended period of non-use of the room.

34. How can I update the thermostat setpoints and meas-

ured temperatures on a supervisor (e.g. Well-contact 

Suite)?

  To have the new setpoint status once a new setpoint has 

been set on the supervisor (regardless of the mode currently 

being used) you must go to the "SETPOINT" and "SENSOR 

PARAMETERS" parameters of the thermostat and set the 

values of "Send on Change" and "Cyclic Send Time" as 

preferred: if the system is very large you should perhaps set 

the send on difference to 0.3-0.5°C and not set the periodic 

send every x minutes so as not to overload the Bus with 

messages.

35. Is it possible to operate a thermostat in such a way that 

in the summer it controls a 0-100% proportional valve 

and in the winter a simple head in On/Off mode?

 

Yes, this can be done by means of special programming of 

the thermostat and relay device that we will now look at in 

greater detail, provided the On/Off head is not controlled by 

the relay on the thermostat (which does not have the logic 

function described below) but by a relay of other devices 

such as an 01523 or a 14457, etc.. YOU have to set the 

thermostat VALVE parameter to "4 pipe proportional with 

proportional/integral control" mode. This way you have 2 

separate "1 byte proportional valve" objects for each season 

and will use only the one for the summer - object no. 34 - 

(whereas for the winter you will not use the corresponding 

1 byte object). For winter mode, set the thermostat FAN 

parameters as "Maximum speed 1", in other words use the 

corresponding object no. 46 of "Speed-1" given that when 

the winter valve is activated by a thermostat heating request, 

this object will certainly also be activated. Given that the ther-

mostat's season change object (object no. 18) goes to "1" 

in winter status and "0" if you set the summer season, you 

can then work with a relay, for example a 01523 on which 

you can activate the parameter "1 OBJECT LOGIC function" 

(setting it in "AND" mode). You can then create a first group 

with the "On/Off control" of the relay together with object no. 

38/46 "Speed 1" of the thermostat (this serves to control the 

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 two 

groups will be constantly at "0", so the On/Off messages 

reaching the 2

nd

 group from thermostat object no. 38/46 will 

not cause the relay to move.

36. Is it possible to operate a temperature control system 

with a 0-100% proportional speed fan coil in both sum-

mer and winter and an on/off head for the underfloor 

system only in winter?

 

YES, it is possible. The guest will see the room temperature 

on the display and will use the buttons to operate the fan 

coil system, to activate the temperature in Comfort mode, 

or to stop the system with Economy/STBY/Off-Antifreeze 

mode. To operate the underfloor system in winter (with 

a constant temperature throughout the day), the guest 

must control “thermostat-B” via the respective menu that 

is selected by pressing the button 

; the display will 

show the icon 

. From the thermostat parameters in 

ETS, the “Thermostat-B split” mode is activated and, like 

“Thermostat-A”, it is set to consider the device probe with a 

100% weighting. For "Thermostat-A" of the proportional fan 

coil you need to set the "4 pipes On/Off" parameters for the 

valve, the type of adjustment in "On/Off Control" while the 

type of fan can be chosen from the proportional fan coil with 

continuous control (0% - 100%) or the 3-speed proportional 

fan coil (0% - 33% - 67% - 100%). In ETS there will be the 

objects nos. 34, 35 for the two hot and cold valves On/

Off and object no. 44 for proportional control of the fan coil 

speed. For "Thermostat-B" for the floor you need to set the 

parameters as "4 pipes with On/Off control" and the ETS 

objects nos. 81, 82 for control of the hot-valve and cold-

valve: object no. 78/82 will be paired with the floor relay 

leaving object no. 77/81 unused so in the summer it will not 

operate. The season change is performed via bus by means 

of communication object no. 66 for thermostat 02952 of 

“thermostat-B”. 

 

Note.

 In winter, when leaving home for an extended period, 

the customer may activate an “Exit” scenario that uses ETS 

parameters to set both “Thermostat-A” and “Thermostat-B” 

in ECONOMY. On returning, he can use another scenario to 

return them to COMFORT mode (the thermostat will retain 

in its memory the last CMF setpoint that the customer had 

selected for both). Obviously the system will require two but-

tons or a supervisor to allow the customer to call up the two 

scenarios.

37. Is it possible to control a fan coil by using any free relays 

of the various devices without using the 4 I/O device (art. 

01522) or the relay actuator (art. 01523)?

 

Yes, it is possible; however, to prevent the user via supervi-

sion from mistakenly activating a speed relay while a similar 

relay is also activated by the thermostat, it is necessary in the 

ETS project to avoid pairing the force–speed objects nos. 39, 

40, 41 and 42.

38. What is the difference between firmware version 1.00 

and 2.00?

Firmware version 2.00 has been updated with datapoint 114 

Humidity Value at 2 bytes type 9.007 that is activated by 

setting the parameter for Percentage displayed = Humidity.

Furthermore, by setting the parameter Enable Menu = 

Disable this excludes only the change of operating mode of 

the Thermostat A. In the case of the firmware version 1.00, 

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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