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21689_r03 

 

7/13

 

In the third step you select the ending time. The final time 

can  not  be  less  than  initial  time,  selecting  two  coincident 

values  for  initial  time  and  final  time,  the  daily  schedule  is 

not changed. 

 

The  last  item  on  the  “Programming”  menu  allows  you  to 

copy the program day to another day. 

 

 

 

At the top you select the source day in the lower you select 

the  destination  day,  You  can  also  copy  a  program  of  the 

day all week and have the same program every day, to do 

this select as target the "ALL". 

When you press OK, a message confirms your copy of the 

program. 

 

Completed the description of the "Programming menu”, we 

return to describe the sub  menu "SETTING MENU". 

The  “Time  setting”  submenu  on  the  "SETTING  MENU" 

allows adjustment of the current time and day of the week. 

 

 

 

Pushing the 

 and 

 buttons you select the item you want to 

change, while pushing the + and - buttons you change the 

value. 

Pushing the OK button, you confirm the changes. 

 

The “Language” submenu on the "SETTING MENU" allows 

set the language of texts on the chronothermostat. 

 

 

 

As seen above, this setting is required when you first start 

or  after  a  reset  of  the  chronothermostat,  then  it  can  be 

changed at will. 

 

The last item, “Heating Control” of the "SETTING  MENU", 

concerns  the  method  used  by  the  chrothermostat  for 

controlling room temperature. 

It  is a  regulation  that  requires  a  specific knowledge  of  the 

heating  system  installed  and  is  reserved,  therefore,  for 

advanced  users:  make  changes  without  knowledge  of  the 

techniques of temperature control is not recommended. 

 

 

 

The  chronothermostat  allows  you  to  choose  among  four 

methods of temperature control environment: 

 

Proporzional 

 

On/Off 

 

Outside temperature compensation 

 

Outside temperature compensation with mix 

 

Proporzional 

Selecting  proportional  mode,  the  temperature  setpoint  of 

the  system  is  modulated  depending  of  the  difference 

between  the  set  room  temperature  and  measured  room 

temperature. 

The  setpoint  of  circuit  heating,  in  this  case,  it  will  be 

proportional  to  the  difference  of  these  two  temperatures 

according to the following rule: 

 

if 

T

a

 

 T

ap

 - 1  + offset

   then   

T

i

 = max

 

 

if  

T

ap

 – 1 + offset < T

a

 < T

ap

 + 1 + offset

    

then   

T

i

 = ( max / 2 ) x ( T

ap

 – T

a

 + 1 + offset)

 

 

if  

T

a

 

 T

ap

 + 1 + offset 

  then   

T

i

 = 0

  

 

when 

T

i

   circuit heating setpoint. 

T

ap  

room temperature setpoint. 

T

a

   room  temperature  measured 

offset 

correction 

value (settable), 

max

  maximum  circuit  heating  setpoint  (set  by  the 

user). 

 

Is  defined,  in  practice,  a  proportional  band  of  width  2  º  C 

between the temperatures. 

T

ap

 - 1 + offset

   (which corresponds

 T

i

 = max

), 

T

ap

 + 1 + offset

   (which corresponds

 T

i

 = 0

)  

and centered in 

T

ap

 + offset

 

The  offset,  is  set  from  0  to  1  °  C,  the  offset  cent ers  the 

band so that in correspondence of 

Ta = Tap

, you obtain the 

setpoint of circuit heating desideratum. 

With  the default offset  =  0,  the  band  has a  width  of  2  º  C 

and is centered in 

Tap

 

Summary of Contents for OT11

Page 1: ...d the control board of the boiler takes place by means of a two wire cable the data are exchanged with the communication protocol compatible OpenTherm v3 0 Smart Power Mode Medium Power GENERAL TECHNICAL DATA FIAMMA design graphic LCD 128x64 pixel backlight timer 20 seconds LED for diagnostics signaling 7 variable function keys weekly programming 4 temperature levels T0 T1 T2 T3 resolution 0 5 C t...

Page 2: ...t boiler lockout LED with color yellow intermittent anomaly LED with color green continuous the chronothermostat is resuming work after a power failure The most frequently used functions by the user are available in the main menu It is possible to quickly browse through the pages to set for example environment temperature or the domestic hot water temperature The first time or after a reset of the...

Page 3: ...er is in stand by and has no problem Under the indication of the ambient temperature may be present in addition a line of text that provides information to the user in special cases such as the presence of error or the status of additional functions such as management of a system of solar panels integrated with the boiler and managed by the thermoregulation board Here there are the messages that m...

Page 4: ...t thermoregulation The management of the cronothermostat by the user is much simplified The functions are not distinct between the functions relating to boiler and functions relating to thermoregulation Pushing again button you switch to another option This option allows you to turn off the system temperature control environment and demand hot water operation are disabled The first level menu is c...

Page 5: ...u has a frame fixed The options previously seen remain displayed for 20 seconds then the display returns to the main screen which depends on the chosen operation mode manual automatic estate vacation off In this option however if the user does not push ESC or not push or the crhonothermostat continues to show the control panel with its solar collector and accumulation temperatures and pump status ...

Page 6: ... lowest temperature with T0 the chronothermostat meets the following constraint T0 T1 T2 T3 and automatically resizes the temperatures Choosing the option Day program you enter in the following screen At the top of the screen you select the day and at the bottom of the screen displays the day program Pressing the and buttons you can select the day For example suppose you want to program the day Mo...

Page 7: ...emperature It is a regulation that requires a specific knowledge of the heating system installed and is reserved therefore for advanced users make changes without knowledge of the techniques of temperature control is not recommended The chronothermostat allows you to choose among four methods of temperature control environment Proporzional On Off Outside temperature compensation Outside temperatur...

Page 8: ...circuit heating according to the formula Ti Tap Te hc Tap when Ti circuit heating setpoint Tap room temperature setpoint Te external temperature measured hc dispersion coefficient In this formula correspond to the curves shown in Fig 2 Outside temperature compensation with mix This method of temperature control is the same climatic compensation just described with a correction dependent on the amb...

Page 9: ... status flags CH OT S P Control setpoint circuit heating C Solar cfg Solar configuration Solar sta Solar status Storage Solar storage temperature C Collector Solar collector temperature C The values displayed are updated regularly by the chrothermostat every few seconds To force loading you can press the middle button transparent and get an instant update Pushing ESC instead to return to the main ...

Page 10: ...een chronothermostat and thermoregulation board master side In particular next to the data the following symbols appear correct data exchange T timeout RX error R RX error generic error unknown P parity error E syntax error Through the Restart command is possible to reconfigure the chronothermostat after interventions hardware software occurred without disconnecting the power adapter on thermoregu...

Page 11: ...6 8 11 Table 1 Correspondence between the connector pins of the serial cable Figura 3 Position connector J2 on C S for connection with a GSM modem Displaying modem status In the line on central text of LCD display you can check the status of the modem Particularly in the initial phase if the modem is detected if the SIM card is active and the GSM network is present the screen will automatically ap...

Page 12: ...ONNECTION TO THE BOILER INSTALLATION INSTRUCTIONS Respect National and European standards EN 60335 1 pr EN50165 regarding electrical safety Before turning on check the cables incorrect wiring may damage the devices and compromise safety Connect and disconnect the control system only in the absence of voltage Avoid exposing the system to dripping water INSTALLING THE CHROTHERMOSTAT ON THE WALL Firs...

Page 13: ... 370049 Villa Bartolomea VR ITALY Tel 39 0442 659028 Fax 39 0442 659045 http www fiammagiro com E mail info fiammagiro it 22 05 2017 Subject to amendments without notice 140 0 90 0 1 2 30 8 Figure 6 external dimension 9 50 5 00 9 00 2 20 5 00 10 40 9 50 18 25 17 15 ø 3 80 Figure 5 fixing holes of the base back view NOTE FIAMMA OT11 is available in white shown on page 1 or black as the image ...

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