Fiamma OT11 User manual

21689_r03 1/13
),AMMA OT11
WEEKLY PROGRAMMING DIGITAL
CHRONOTHERMOSTAT WITH
REMOTE BOILER CONTROL
(OpenTherm® compatible) AND REMOTE
MANAGEMENT VIA GSM
APPLICATION
The digital chronothermostat FIAMMA OT11 series
integrates the functions of room temperature control and
remote control of home heating system in a single
interface, specially designed to make available all its
functionalities in intuitive mode.
Control of the heating system is complete, allowing to
manage advanced features such as solar thermal panels (if
supported by the thermoregulation board).
It is possible to choose beetween different modes of
thermoregulation, even using an external probe (connected
to the boiler) for climatic compensation.
Weekly programmation is particularly versatile because it
provides 4 temperature levels settable and no restriction
number of time slots per day, consisting of individual
intervals equal to a quarter of an hour and can be viewed
on the appropriate graph of the daily program.
The communication between the thermostat and 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 temperature set)
• resolution (0,1°C temperature read)
• minimum interval programming: 15 minutes
• SELV insulation (Safety Extra Low Voltage)
• Bipolar connection, non-polarized
• OpenTherm™ protocol v3.0 Smart Power Mode –
Medium Power
• serial interface RS-232 (5 wires) for external GSM
modem
TECHNICAL DATA OF THE CHRONOTHERMOSTAT
Operating temperature: -0°C +50°C
Humidity: 95% maximum at 40°C
Power supply: low voltage (3V), obtained from
communication with the boiler control board
Protection degree: IP30
Dimensions: 140x90x32 mm
Compliance: directive 2004/108/CE (EMC), directive
2006/95/CE (LVD).
Temperature controls classes in accordance with the
delegated regulation (EU) No 811/2013:
Class 1, FIAMMA OT11 used in ON/OFF operation.
Class 5, FIAMMA OT11 used in modulating operation.
Class 6, FIAMMA OT11 used with outside temperature
compensation.
Weight: 170 g

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INSTRUCTION FOR USE
The FIAMMA OT11 provides the user with a graphic LCD
dot-matrix, a series of buttons in silicon rubber, and an LED
indicator located below a button plastic transparent to
display the parameters and interact with the heating
system. Figure 1.
The buttons have any versatile utilization depending on the
selected menu.
The use of buttons is facilitated by the indications with text,
icons and other graphics that appear on the display.
The vertical buttons on the left of the display are typically
used to navigate the setup menu or to select the
parameters.
The vertical buttons on the right of the display are used to
vary temperature and the classical function increase /
decrease (+ / -).
To facilitate the change of set values, the long press of
these buttons accelerates the increase or decrease.
The horizontal buttons at the bottom serve to confirm or
cancel the settings, or to enter and exit the submenus.
The center button to used for special functions as the
unlock of the boiler.
Under the center button there is an LED:
• LED with color red continuous: error or no
communication with the boiler;
• LED with color red intermittent: 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 OT11, appears the
language menu, as shown in the figure below.
Pushing buttton OK, you confirm the selection.
This choice can be changed later, if necessary, through the
"SETTING MENU".
Then the current time can be entered.
Also in this case the buttons to the left allow you to select
the various menu items, while the right buttons are used to
change the values, the OK button stores the settings while
the ESC button allows you to continue without changing the
data time.
If you press ESC, the subsequent reconnection of the
cronothermostat (for example power down) you will again
be prompted to select the language and set the current
time.
Figure 1: description of the remote control unit
graphic display (LCD)
hole for
access to the
reset button
function buttons
(the active command is indicated on the graphic display)
multifunction button with LED
buttons to
increase and
decrease
temperatures and
parameters
buttons to select
or change the
function
parameters

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BASE FUNCTION
FIRST LEVEL MENU
When the chronothermostat is connected to a
thermoregulation board, the following screen appears on
the display.
If the thermoregulation board is not compatible, you will
receive an error message.
In the figure the main screen. Above are shown the day of
the week and the current time, these indications are
intermittent if they are not updated.
Below there is an indication of the temperature measured
(measurement every 10 seconds);
Beside, an icon indicates the function of thermoregulation
currently active: in this case the image of a clock indicating
the automatic operation.
Corrispondence between icons and operation modes:
Automatic
Temperature control environment
according to the weekly program
set by the user.
Program seen as a graph of the
current day.
Domestic hot water operation
enabled.
Manual
Temperature control environment
in accordance with a user-selected
temperature (thermostat function).
Domestic hot water operation
enabled.
Vacation
Temperature control at a fixed
temperature for a number of days
set by the user.
Domestic hot water operation
enabled.
Summer
Temperature control environment
disable.
Summer ventilation can be
activated manually.
Domestic hot water operation
enabled.
Standby
Temperature control environment
disable.
Demand hot water operation
disabled.
In “automatic mode”, the cronothermostat performs the
temperature control program was set for the current day,
the graph is visible at the bottom of the display.
The graph is divided into time intervals of 15 minutes,
corresponding to a pixel horizontally, and in the four
programmable temperature levels.
Near the icon of the operation mode other icons may
appear. If the boiler is turned on appears flame symbol,
different sizes depending on the modulation level of the
flame ( ). If it present a lockout or a fault appear
symbols ( , ) respectively and if it is not present the
connection icon appears symbol ( ). No icon appears in
the visualization if the boiler 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 may appear, alongside
with their meanings:
Starting… OT11 is in the process of connection to the
boiler.
Modem connected OT11 correctly connected to the GSM modem.
Solare: standby Solar thermal system active and working correctly
in the standby state.
Solar: active Solar thermal system active and working correctly
with solar pump active.
Solar: boiler Solar thermal system active and working correctly,
integrated with the boiler.
Solar: disinf. Solar thermal system active and working correctly
with the tank disinfection procedure active.
Ambient probe error Room temperature sensor on OT11 damaged.
Solar: fault There is an anomaly in the solar thermal or part of
the boiler that manages the solar thermal system.
Modem error Communication error between OT11 and the
GSM modem
Fault code xxx There is an anomaly or a lockout on the boiler.
Code xxx .
Comm. error Communication error between OT11 and boiler.
Error ID xx The OT11 fails to correctly interpret of
information sent from the boiler.
Note: Please refer to the thermoregulation board's documentation for
detailed description of the fault codes and error codes.
The buttons on the right, marked with + and -, allow to vary
the temperatures required for the automatic program (T0,
T1, T2, T3). Instead, in “manual mode” (icon ) allow to
vary the corresponding temperature.
Pushing the buttons on the left, marked with arrows, you
can browse the pages of first level menu.
Pushing the button ▼, the following display appears.
Pushing the buttons +/- you can vary the temperature and
pushing the button you activate the “manual mode”.
Another option selectable by the first level menu is the
“vacation mode”, which allows to maintain the desired
temperature for a configurable number of days, so as to
optimize power consumption in case of absence of the
users.

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In the same view to activate the “vacation mode” you can
enter the desired temperature, the temperature value can
also be changed later when the “vacation mode” is active.
Pushing button OK you can select the number of days you
want up to the maximum value of 99.
Pushing ESC or OK buttons without selecting the number
of days, "vacantion mode" will not be active, and the
cronothermostat will return to the previous operating mode.
The “vacation mode” has a timer function and the day
counter decrements by one at midnight, the number of
days remaining is shown on the display when the mode is
active.
At the end of this time, when the counter is cleared, the
cronothermostat switches to "automatic mode" and follow
the weekly program has been set.
Pushing again button ▼, you can activate the "summer
mode", which is active demand hot water but not
environment 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 circular, all the screens described
above are accessible by pushing the reverse button ▲.
Pushing again button ▼ is proposed the sub-menu
“SETTING MENU”
In "SETTING MENU" are set the calendar, the mode of
thermoregulation and a weekly schedule. The "SETTING
MENU" is described in a separate paragraph below.
Pushing again button ▼ you enter the menu for setting the
sepoint temperature of the domestic water.
This menu page is only available if the boiler operates the
domestic water. Below, the page shows the minimum and
maximum limits, set on the thermoregulation board.
Pushing again button ▼ you enter the menu for setting the
setpoint temperature of the circuit heating:

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Below, the page shows the minimum and maximum limits
set on the thermoregulation board.
The temperature represents the maximum value that the
heating set-point can be taken in termoregulation
proportional mode and compensation mode. For more
details see the following paragraph, in particular the
description of the submenu "Heating control".
Pushing again button ▼ is proposed the submenu
“PARAMETERS MENU”
The submenu "PARAMETERS MENU" (described in the
relevant section) allows you to see the parameters of the
boiler and allows you to manage advanced functions, such
as transparent parameters (TSP), unlock and water filling
(if provided).
If the boiler supports the integration of solar panels, the
next screen is relative to the operation of solar thermal.
(If the solar function is not active is displayed, however, the
boiler panel described below.)
This menu 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.
Similar applies to the next screen, the control panel of the
boiler.
This screen displays the main information on the boiler.
In the first line appears the system pressure, the flame
symbol , if the boiler is turn on, and the percentage of
flame modulation. In case of lockout or anomaly appears
the symbols ( o ) and the error code for diagnostic.
In the second line appears the circuit heating temperatures
(left) and return temperature (right).
In the last line appears the DHW temperature and the DHW
flow rate in liters per minute.
Pushing again the button ▼ you return to the first option.
In case it is already active the automatic mode, it is
indifferent push NO or OK.

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MANAGEMENT CHRONOTHERMOSTAT
SETTING MENU
This section describes the submenu “SETTING MENU”
This submenu allows you to manage temperature control
environment, the weekly program, the time setting and the
language choosing.
Selecting the option “Programming” you enter in weekly
program dedicated submenu.
Choosing the option "Temperature" you enter in the screen
setting of the four temperature levels T0, T1, T2 and T3.
To select the temperature level is necessary to push the
buttons ↓ e ↑, instead to vary the temperature value it is
necessary to push + e –.
On the right side of the screen is shown the relative
position of the current setpoint temperature value with
respect to minimum values (5 °C) and maximum value (30
°C).
The higher temperature is associated with T3 and the
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
"Monday", pressing OK button you enter the scheduling of
time slots.
The time slots are programmed in three steps: initial time,
temperature and final time.
In the first step is set the starting time by pushing the + and
- buttons at intervals of at least 15 minutes and you confirm
pushing OK.
However, if you want to quit the programming of the
selected day, push ESC.
In the second step, pushing the ◄ and ► you select
which of the four programmed temperatures will be
associated to the time slot. Pushing OK you confirm the
level of temperature and pushing ESC you return in the first
step.

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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 Ta ≤ Tap - 1 + offset then Ti = max
if Tap – 1 + offset < Ta < Tap + 1 + offset
then Ti = ( max / 2 ) x ( Tap – Ta + 1 + offset)
if Ta ≥ Tap + 1 + offset then Ti = 0
when
Ti circuit heating setpoint.
Tap room temperature setpoint.
Ta 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.
Tap - 1 + offset (which corresponds Ti = max),
Tap + 1 + offset (which corresponds Ti = 0)
and centered in Tap + 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.

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On/Off
This mode is similar to that used by the thermostats with
clean contact.
Set the hysteresis value, between 0 and 1 ° C (defau lt 0.2 °
C), the temperature control takes place according to the
following rule:
if Ta ≤ Tap - hysteresis then Ti = max
if Ta ≥ Tap + hysteresis then Ti = 0
when
Ti circuit heating setpoint.
Tap room temperature setpoint.
Ta room temperature measured.
offset correction value (settable),
max maximum circuit heating setpoint (set by the
user).
Outside temperature compensation
If the boiler is equipped for measuring the outside
temperature (Tout), you can choose the weather
compensation as a mode of thermoregulation.
In this case you can set the coefficient of dispersion hc
(heating curves) for external temperature compensation:
the range is 0.5 to 3.5.
The chronothermostat calculates the setpoint temperature
of the 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 ambient temperature.
The ambient temperature acts as a "feedback" to improve
environmental comfort.
To avoid that the ambient temperature deviates too much
from the desired value, it is possible to set the differential d,
in a range between 0 and 5 ° C so that:
if Tap – Ta > d then Ti = max
when
Ti circuit heating setpoint.
Tap room temperature setpoint.
Ta room temperature measured.
max maximum circuit heating setpoint (set by the
user).
d differential (set by the user).
20
30
40
50
60
70
80
-
20
-
15
-
10
-
5
0
5
10
15
20
3
,
5
3 2,5 2
1,5
1
0,8
0
,
5
Te
Ti
[°C]
[°C]
Figure 2
Graph relative to the external temperature
compensation for various values of HC, with Tap=20ºC

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MANAGEMENT SYSTEM
PARAMETERS MENU
The submenu "PARAMETERS MENU" allows you to
remotely manage the boiler.
Pushing the ↓ and ↑ buttons, you scroll through the various
items.
First page:
Second page:
The first item "Read" allows you to read the parameters of
the system remotely.
Pushing the OK button is activated the first page of reading
parameters.
The parameters are active if the thermoregulation board
manages the corresponding parameters.
The parameters are specific of OpenTherm protocol and to
understand the meaning is necessary to know the protocol
OpenTherm.
The parameters available, in different pages, are the
following:
CH Temp. Circuit heating temperature (°C)
Ret. Temp. Return water temperature (°C)
DHW Temp. DHW temperature (°C)
Out Temp. Outside temperature (°C)
Exhaust T. Boiler exhaust temperature (°C)
Mod. level Relative modulation level (%)
CH Press. Water pressure in CH circuit (bar)
DHW Flow Water flow rate in DHW circuit. (l/m)
Fault flgs Fault flags
Fault code OEM fault code
TSP max Number of transparent-slave-parameters
FHB max Max. dimension fault-history buffer
Slave cfg. Slave configuration flags
Slave sta. Slave status flags
Master sta. Master 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 menu.
The second item on the "PARAMETERS MENU" allows
you to send commands to the boiler.
As shown in screen above, pushing the "Water filling" you
can load the hydraulic system, monitoring the pressure, if
the thermoregulation board manage it.
In case of lockout of the boiler, in addition, you can send a
request for remote reset, choosing the "Reset" and press
ENTER.
The remote reset is a safety function, the actual reset of the
boiler is subject to the control of the safety logic board.
You can also unlock the boiler from the main screen
(automatic mode, manual mode, etc..), Pressing the
transparent button.
The third item concerns of the transparent parameters
(TSP).
This function depends on the board connected to the
chrothermostat, therefore, please refer to the board's
documentation for detailed description and the use of these
parameters. The number of TSP depends of the
thermoregulation board, the chronothermostat supports a
maximum of 255 TSP (idx 001 to 255).

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The chronothermostat provides the functions of reading
and writing of the TSP, as shown above.
Pushing the ↑ and ↓ buttons, you can move the index "idx"
and pushing SET button the next page appears.
On this page using the + and - buttons, you can enter the
desired value of the TSP.
If the thermoregulation board does not provide the writing
of this TSP (read only) changes will not take effect.
The fourth items in the "PARAMETERS MENU" allows the
consultation of the "Fault History Buffer" (FHB) of the boiler,
i.e. the storage the lock codes which may be useful for
diagnostics.
This function cannot be managed of the thermoregulation
board.
The values are displayed in groups of four per page and
you can scroll through pages with ↑ and ↓ buttons.
The chronothermostat also provides in this case the
maximum number of parameters 255, with idx ranging from
000 to 254.
The last items of the "PARAMETERS MENU", contained in
the second menu page, are typically used for technical
work on the chronothermostat.
In particular, "OT monitor" is dedicated to the diagnosis of
OpenTherm communication, as it makes visible the data
exchanged between 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 thermoregulation.
Pushing the button "Restart" is equivalent to disconnect
the connector of communication.
The submenu "RS232 Monitor" is shown in the following
section, remote management via GSM-SMS.
REMOTE MANAGEMENT VIA GSM-SMS
Connecting a GSM modem
The FIAMMA OT11 chronothermostat allows the user to
remotely manage some functions of the heating system by
sending and receiving SMS messages.
The boiler responds at the set number in case of anomaly
status and lockout status. In order to use the GSM network
is necessary to connect external GSM modem;
The GSM modem must have its own power supply and
must be connected to FIAMMA OT11 with a dedicated cable.
To install the GSM modem, refer to the instructions
provided by the manufacturer of the modem itself.
WARNING!
To avoid connecting the signal ground GND of the
serial cable!
Necessary to isolate the casing of the GSM modem, if
this is connected electrically to the signal GND.

21689_r03 11/13
WARNING!
The GSM modem must be equipped with a SIM card
active and able to send and receive SMS; before
inserting the SIM in the modem, you must disable any
PIN code request,
You can only send SMS from numbers with
international prefix Italian ("+39").
At this date, the GSM function is only for Italy.
On request, the GSM function can be implemented to
operate in other states.
TECHNICAL DATA SERIAL COMMUNICATION
- protocol RS-232
- baud-rate 2400 bit/s
- use of AT commands according to standard GSM
07.07 and 07.05
- use of 5 conductors (TX, RX, GND, DSR, CTS)
CRONO (DTE) MODEM (DCE)
D-SUB 15
SIGNAL CON. 8 POLES
Tiye Molex
90327-0308
(J2 on pcb)
CONN. DB9 CONN. 15
POLES
TX (CT103) 7 3 2
RX (CT104) 8 2 6
GND 2 5 9
DSR 5 6 7
CTS 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" appears as follows:
in addition to the usual information, there is shown the
GSM signal level (0 to 5 "levels") and the name of the
operator.
More information on communication with the modem can
be viewed by entering the submenu "RS232 Monitor"
located in "Menu parameters".
In the first page shows the status of the modem, the serial
communication (right), the name of the GSM operator and
the level of the signal.
Pushing the "Buffer" you can view the data exchanged
between the chronothermostat and modem, for diagnostic
operations.

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INTERNAL ENERGY STORE AND USE OF BATTERIES
The chronothermostat is provided with an internal energy
store which can compensate for a power cut-off for a few
hours; in this way the user will not have to set the current
time, room temperatures and week program again.
However, the internal energy store consumption time varies
depending on the room temperature and humidity, as well
as on the ageing of components. In order for the internal
energy store to be fully effective, the chronothermostat
must have been correctly energized for a couple of days at
least without interruption.
Please note that on restoration of the power supply (and of
serial communication), the boiler control board takes on the
heating and DHW set-point values: any modification of
these parameters should therefore be stored by the boiler
control board itself. If frequent and/or long cut-offs of the
boiler power supply are expected, it is possible to avoid
losing chronothermostat data by installing two alkaline
batteries type AAA LR03 1,5V into the appropriate slot on
the fixing base. In this way, the additional internal energy
store, made by new batteries, enables to preserve data for
a period even longer than one year under no power supply
conditions. It is advisable not to keep batteries inside the
chronothermostat for a long time during normal operation
(power supply presence) to prevent any battery liquid
leakage from damaging the chronothermostat itself. Finally,
please note that FIAMMA OT11 does not provide any
information about the presence of batteries or their
charging status.
WARNINGS ABOUT THE BACKLIGHT
The display backlight is obtained from the reserve
described in the previous paragraph. It is possible,
therefore, that in case of newly connected
chronothermostat the brightness is minimal or absent
because of insufficient internal charge: this must not alarm
as they are just a few hours of connection, because the
backlight to begin to be efficient.
You can, if desired, to remedy this temporary lack of
backlighting installing alkaline batteries, making sure the
polarity and following the instructions in the previous
paragraph.
OPENTHERM CONNECTION 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
First step, remove the cover containing the electronic board
by pushing the appropriate button trapezoid, that says
"PUSH", located on the lower unit and rotating the cover
itself up, until it is fully removed, as shown in figure 4.
For the fixing on the wall is possible to use many holes
provided on the bottom of the base, in this case, see figure
5. Then is possible to wire the circuit board unit using the
appropriate terminal, regardless of the polarity (the two
conductors can be exchanged). It is recommended to use a
twisted pair cable (example H03RR-F o H03VV-F) size
between 0,5 mm2 and 2,5 mm2, , the length should not
exceed 50m. The resistance of each conductor, in any
case, should not exceed 5 Ω.
In environments with electromagnetic interference it is
recommended to use a shielded twisted pair cable.
DEFINITION OF TEMPERATURE CONTROLS CLASSES
IN ACCORDANCE WITH THE DELEGATED
REGULATION EU No 811/2013
In accordance with the delegated regulation (EU) No
811/2013 supplementing Directive 2010/30/EU of the
European Parliament and of the Council with regard to the
energy labelling; for FIAMMA OT11 the following
temperature control classes are definited.
Class I: Setting the method of temperature control
ON/OFF. The class I assigns a percentage value equal to
1% as a contribution to seasonal space heating energy
efficiency.
Class V: Setting the method of temperature control
PROPORTIONAL. The class V assigns a percentage value
equal to 3% as a contribution to seasonal space heating
energy efficiency.
Class VI: Setting the method of temperature control with
OUTSIDE TEMPERATURE COMPENSATION or
OUTSIDE TEMPERATURE COMPENSATION WITH MIX.
The class VI assigns a percentage value equal to 4% as a
contribution to seasonal space heating energy efficiency.
NOTES CONCERNING DISPOSAL OPERATIONS
The device contains electronic components and must not
be disposed of as a domestic waste. For the disposal
operation refer to the local rules concerning special waste.

21689_r03 13/13
DIMENSIONS FIXINGS
ATTENTION: The FIAMMA GIRO srl takes no responsibility for any damage resulting from Customer's tampering with the device.
FIAMMA GIRO s.r.l.
Via P. Bettini, 31
370049 Villa Bartolomea (VR) - ITALY
Tel. [phone] - Fax [phone]
http://www.fiammagiro.com
E-mail: [e-mail]
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.