Vimar 2906 User manual

Instructions manual
02906 GSM thermostat
Installer Manual

1
Table of Contents
1. GSM thermostat 02906 …………………………………………………………………………………………… 2
2. Field of application ……………………………………………………………………………………………… 2
3. Installation ………………………………………………………………………………………………………… 2
4. Connections………………………………………………………………………………………………………… 4
4.1 Relay connection ……………………………………………………………………………………………… 4
4.2 External temperature probe …………………………………………………………………………………… 5
5. GSM function ……………………………………………………………………………………………………… 7
4.1 Fitting and replacing the SIM card …………………………………………………………………………… 7
6. Switching on a resetting parameters…………………………………………………………………………… 9
7. Display …………………………………………………………………………………………………………… 10
7.1 Functions of the buttons …………………………………………………………………………………… 11
7.2 Symbols ……………………………………………………………………………………………………… 11
7.3 Ecometer …………………………………………………………………………………………………… 12
7.4 Locking the interface via PIN ……………………………………………………………………………… 12
8. Operating mode ………………………………………………………………………………………………… 13
8.1 Switched off (OFF) ………………………………………………………………………………………… 13
8.2 Manual………………………………………………………………………………………………………… 14
8.3 Away ………………………………………………………………………………………………………… 15
8.4 Nighttime reduction ………………………………………………………………………………………… 16
8.5 Antifreeze …………………………………………………………………………………………………… 17
9. Settings menu …………………………………………………………………………………………………… 18
9.1 Operating mode setting …………………………………………………………………………………… 18
9.2 Heating/air-conditioning setting …………………………………………………………………………… 19
9.3 Temperature set point setting ……………………………………………………………………………… 19
9.3.1 Comfort temperature …………………………………………………………………………………………… 19
9.3.2 Away temperature ……………………………………………………………………………………………… 20
9.3.3 Antifreeze temperature ………………………………………………………………………………………… 20
9.3.4 Nighttime reduction thermal delta …………………………………………………………………………… 20
9.3.5 User settable thermal delta …………………………………………………………………………………… 20
9.3.6 Hysteresis of the device………………………………………………………………………………………… 20
9.4 Unit of measurement setting ……………………………………………………………………………… 20
9.5 Calibration setting …………………………………………………………………………………………… 21
9.6 External probe setting ……………………………………………………………………………………… 21
9.7 OnOff/PID setting …………………………………………………………………………………………… 21
9.8 Buzzer setting ……………………………………………………………………………………………… 22
9.9 Standby brightness level setting …………………………………………………………………………… 22
9.10 GSM settings ………………………………………………………………………………………………… 23
9.11 Info……………………………………………………………………………………………………………… 23
9.12 Lock/unlock PIN setting …………………………………………………………………………………… 23
10. Summary table of thermostat parameters ………………………………………………………………… 24
11. Cleaning the device ……………………………………………………………………………………………… 25
12. Installation rules ………………………………………………………………………………………………… 25
13. Regulatory compliance ……………………………………………………………………………………… 25

2
MADE IN ITALY
02906
–T40
5(2)A
230V~
230V~
50/60Hz
1.C C N LNC NO
6 mm
1. 02906 GSM thermostat
Mains powered wall-mounted thermostat with interface with capacitive keys, with GSM remote control func-
tion. Equipped with user-friendly functions to facilitate energy saving. Designed to control heating and air-con-
ditioning via C, NC, NO relay output. Input for management of an external temperature probe (e.g. art. 02965).
2. Field of application
This device is designed to control room temperature by acting on the control circuit of the burner or circulation
pump (heating) or on the control circuit of the air conditioner (air conditioning), ensuring an ideal temperature.
The graphical user interface, thanks to special views, facilitates system management helping the user to oper-
ate while maintaining a state of energy saving.
The thermostat has a GSM communicator for remote control, making it ideal for installation in second homes.
3. Installation
The appliance must be installed on a wall at a height of 1.5 m off the floor in a suitable position for correctly
detecting the ambient temperature. It must not be installed in niches, behind doors and curtains or in areas
affected by sources of heat or atmospheric factors.
It can be installed directly on a wall or on 2 and 3 module back boxes (see figures 1 to 7).
It should be used in dry, dust-free places at a temperature between 0 °C and +40 °C
1 2

3
MADE IN ITALY
02906
–T40
5(2)A
230V~
230V~
50/60Hz
1.C C N LNC NO
6 mm
V I M A R S pA
e
2
Pb
MADE IN ITALY
02906
–T40
5(2)A
230V~
230V~
50/60Hz
1.C C N LNC NO
6 mm
V I M A R S p A
e
2
Pb
MADE IN ITALY
02906
–T40
5(2)A
230V~
230V~
50/60Hz
1.C C N LNC NO
6 mm
V I M A R S pA
e
2
Pb
3 4
5 6
7
V I M A R S p A
e
2
Pb
MADE IN ITALY
02906
–T40
5(2)A
230V~
230V~
50/60Hz
1.C C N LNC NO
6 mm
2
click
1

4
4. Connections
4.1 Relay connection
L
N
U1
art. 02965
N
T
C
V I M A R SpA
e2Pb
CNC NO N L
Fig. 1 - Connections with circulation pumps, burners and solenoid valves
L
N
art. 02965
N
T
C
U1
V I M A R SpA
e2Pb
CNC NO N L
CHIUDE-CLOSES
FERMÉE-SCHLIESSEN
CERRAR-ΚΛΕΙΣΙΜΟ
APRE-OPENS
OUVERTE-ÖFFNEN
ABRIR-ΑΝΟΙΓΜΑ
Fig. 2 - Connections with motorized valves

5
4.2 External temperature probe
Depending on how it is configured, the external temperature probe can be used to accomplish several
functions (see par. 9.6); it does NOT have polarity so you can connect the 2 wires in the 2 terminals
without any particular order.
It is recommended to use the NTC 10k beta 3900 probe (art. 02965-20432-19432-14432).
The typical wiring diagram is the following:
Fig. 3: Connecting the external temperature probe
4.2.1 Installation examples:
02695 used to display the outside temperature
art. 02965
N
T
C
V I M A R SpA
e2Pb
CNC NO N L
V I M A R SpA
e2Pb
CNC NO N L
art. 20432
art. 19432
art. 14432

6
02695 used for adjustment (of a remote environment)
02695 used for limiting the temperature of underfloor heating
IMPORTANT: During installation, take care not to damage the insulation of the probe while
laying the screed. Perform the installation in such a way that the probe is accessible for any
maintenance work.

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5. GSM function
By sending and receiving SMSs with the appropriate encryption, the thermostat can be switched on, off and
queried for viewing data on the room and it can perform various other functions; interaction with the device for
remote control is via the By-clima smartphone app that automatically creates the encrypted SMSs.
Using these features you can then:
• Set the operating parameters of the thermostat.
• Send commands.
• Query the thermostat to know the current operating status.
• Receive previously configured and enabled alarm notifications.
• Receive from the thermostat any SMSs that have not been recognized as command SMSs. Command
and monitoring SMSs are generated by the By-clima App while voice calls, reading and therefore interpreting
incoming SMSs must be managed manually by the user with the standard smartphone functions.
More in detail, the functions associated with GSM mode via SMS or via voice calls are:
• Thermostat management = setting the operating mode (Off, Antifreeze, Away, Manual, Nighttime reduction).
• Thermostat configuration = programming all the temperature control parameters that can also be set
locally by the thermostat and configuration of all the functions of the GSM module that instead cannot be
programmed locally.
• Requesting the current operating status of the thermostat (for all the various types).
• Notification of alarms for power supply voltage failure/restoration (only if configured and paired with users
saved in the contacts list).
• Notification of technical alarms for exceeding the temperature thresholds (only if configured, enabled and
paired with users saved in the contacts list).
• Receiving SMSs sent by the thermostat as they are not recognized as being in compliance with the commu-
nication protocol (only if configured and paired with users saved in the contacts list).
Generally, the configuration commands do not require confirmation SMSs as instead is the case for the mon-
itoring commands; so, in order to have confirmation on successfully setting a parameter, you need to query
the thermostat about its status.
Otherwise, all the command operations that, for example, change the active temperature control mode, will
generate an SMS for notification and confirmation of the operation.
Using the "phone call" function, which generates a voice call from a recorded user, you can obtain information
on the general status of the device. Associated to the voice call, you can also switch the operating state, in
the following way:
• In heating mode:
- from Manual to Antifreeze
- from any other mode to Manual
• In air-conditioning mode:
- from Manual to OFF
- from any other mode to Manual
Also in this case a report of the general status of the GSM device is sent to the caller number.

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5.1 Fitting and replacing the SIM card
The thermostat can be used with a traditional SIM card (ID-000 format) for voice / SMS traffic; data SIMs
cannot be used for operating the device .
To install the SIM card:
• Disable the PIN code from the SIM card (install the SIM in a mobile phone and when switching on disable
the PIN code prompt).
• Turn off the power supply to the thermostat 02906.
• Remove the front panel by inserting a screwdriver into the slot in the bottom and pushing the release tab
upwards and, at the same time, pull out the front of the product.
• Insert the SIM card into the SIM holder in the rear of the front panel you have just removed.
• Fit the front panel back into its original position by hooking it onto the mounting tabs located on the upper
side of the part on the wall and then closing the lower part. Finally, power up the thermostat.
• The icon will show the correct installation and the quality of the GSM network:
blinking: switch-on phase (if the icon is still flashing after a few minutes, it means that there is an ERROR so it is
necessary to check the SIM card)
: GSM signal not present or insufficient
: GSM signal barely sufficient (up to 20%)
: GSM signal from 20% up to 50%
: GSM signal from 50% up to 80%
: optimum GSM signal (over 80%)
OPEN
LOCK
3 4
OPEN
LOCK
OPEN
LOCK
1 2

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6. Switching on and resetting parameters
When switching on, in the first 3 seconds of power-up the thermostat displays the firmware version.
Fig. 4: Start up screen
If in this phase you touch the icon, a screen appears on the display where you can reset the device
parameters:
Fig. 5: Parameter reset screen
By confirming with , ALL the device parameters (temperature setpoint, heating/air-conditioning mode,
unit of measurement, etc.) and ALL GSM function settings (phone numbers, SMS, etc.) will be restored to
the default values.
WARNING This operation is not undoable.
If you wish to reset only the GSM settings, refer to paragraph 9.10.2.

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7. Display
The touchscreen display allows you to control the system using the following buttons and icons:
I H G F E D C
A B
L
Fig. 6: Graphical interface and buttons
A: GSM network signal
B: Operating mode
C: Away
D: Confirm
E-F: Menu navigation and setting parameters
G: Back
H: Nighttime reduction
I: Settings menu
L: Ring indicating consumption level and energy savings indicator

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7.1 Functions of the buttons
: increases the numerical values. When it "disappears" from the display it means that the value
cannot be increased any more.
: decreases the numerical values. When it "disappears" from the display it means that the value
cannot be decreased any more.
: during navigation, it scrolls through the available menus to the right. If it "disappears" then
you have arrived at the last of the items that can be scrolled.
: during navigation, it scrolls through the available menus to the left. If it "disappears" then you
have arrived at the last of the elements that can be scrolled.
: confirms the selected option (activates the submenu if there is one or displays the next
parameter/digit).
After each confirmation, the display shows the icon for approximately 1 s.
: back (or cancel) exits the current screen/menu and returns to the previous one without sav-
ing any changes. In menus with changes to multiple digits it lets you go back to change the
previous digit.
N.B. The field/value being edited is highlighted by the field/value itself flashing.
7.2 Symbols
Depending on the different operating modes, the following icons could also be displayed:
: GSM network signal status
: Calibration
: Away
: Manual (ON)
: Nighttime reduction
: Antifreeze
: Switched off (OFF)
: Air conditioning
: Heating
: Confirm
: Eco (saving)

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7.3 Ecometer
Fig. 7: Set of ECOMETER icons
On the left-hand side of the display there is a set of icons called the "ECOMETER" that provide an overview
of the expected consumption as an aid to energy saving.
The information displayed is based on a consumption forecast obtained by comparing the currently set
temperature setpoint and the estimated average consumption (which therefore has nothing to do with the
current room temperature).
• The consumption level ring graphically indicates the expected level of consumption.
If this level is less than half, it means that there will be a saving compared to the conventional average
consumption; vice versa, if the level exceeds half, the expected consumption will be higher than the
conventional average.
• The energy saving indicator indicates whether the currently set setpoint will allow obtaining savings
with respect to the conventional average consumption.
7.4 Locking the interface via PIN
The thermostat lets you set a password (see par. 9.12) which inhibits any change to the operating mode
(eg switching from Manual to OFF), limits setting the temperature values and, more generally, blocks
access to the configuration menu.
This feature is useful to prevent the thermostat being used by unauthorized persons: the device prompts
you to enter the PIN.
Fig. 8: Locking with PIN
Ring for the level of consumption
Energy saving
indicator

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8. Operating mode
The thermostat 02906 is able to adjust the temperature according to the following operating modes:
• Switched off (OFF): switches the system off without making any adjustments
• Manual (ON): lets you set the required temperature set-point manually
• Away: is a mode that lets you set the set-point in order to achieve significant energy savings during periods
when the user is away
• Nighttime reduction: this mode, which can be activated locally, is useful for changing the manual adjust-
ment set point in the hours of nighttime operation.
• Antifreeze: used to set a minimum temperature level to avoid damage to pipework or prevent the temper-
ature from falling below a safety level.
The operating mode is selected via the SETTINGS menu (see chap. 9).
8.1 Switched off (OFF)
With this mode on, the thermostat is turned off and you cannot make any adjustments; in this case, the
icon is displayed above the temperature indicator.
When the thermostat is OFF, you cannot perform any operations other than accessing the configuration
menu.
Fig. 9: Typical screen for OFF mode
For heating-only systems this mode is typically used in the summer.

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8.2 Manual (ON)
This is the "traditional" operating mode. The thermostat controls the room temperature and takes it to the
value set by the user (manual adjustment setpoint).
Fig. 10: Typical screen for Manual mode
The set point can always be changed via or .
In the course of setting, the set point flashes and the circular ring fills up accordingly; this gives an indica-
tion of the expected consumption as a function of the set point you are setting:
Fig. 11: Manual set point setting
The selection is confirmed by touching .
The and icons in the lower right corner indicate whether the system is operating in heating or
air-conditioning mode respectively (icon illuminated = system on).

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8.3 Away
This mode is useful to achieve energy savings quickly and effectively whenever the user leaves the reg-
ulated room.
In "Away" mode the system makes the adjustment according to the "away temperature" setpoint (see
para. 9.3.1).
The Away mode can only be activated in manual mode by touching .
The display will show the "away temperature" setpoint for approximately 2 seconds:
Fig. 12: Input in away mode showing the away temperature
Activation of this mode is identified by the icon above the temperature indicator:
Fig. 13: Away Mode
To exit and return to Manual mode touch the button again.

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8.4 Nighttime reduction
This is the typical mode to use at night to reduce system consumption significantly.
In "Nighttime reduction" mode the device reduces the consumption of the system, taking the room tem-
perature to a lower value (or higher, if on air-conditioning) than the Manual mode by degrees (see
par. 9.3.3).
The "Nighttime reduction" function is done from Manual mode by touching .
The display will show the "nighttime reduction" setpoint for approximately 2 seconds:
Fig. 14: Input in Nighttime Reduction mode showing the reduction set point
Activation of this mode is identified by the icon above the temperature indicator:
Fig. 15: Nighttime reduction mode
To exit and return to Manual mode touch again.

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8.5 Antifreeze
This mode, which can only be activated when the system is operating in heating mode, lets you set a
minimum temperature value ( setpoint) to avoid damage to the pipework or to keep it from falling below
a certain safety level when you are away for lengthy periods in the winter.
The "antifreeze" mode is activated directly from the Settings menu (see par. 9.1).
Once activated, antifreeze mode is identified by the icon above the temperature indicator.
Fig. 16: Antifreeze mode

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9. Settings menu
From the settings menu you can configure all the features of the thermostat.
On the main screen (see Fig. 6) tap the icon.
From the main menu, using and will display the following (flashing) symbols in succession,
which provide access to the corresponding submenus:
1. operating mode setting
2. and air-conditioning/heating setting
3. temperature setpoint setting
4. unit of measurement setting
5. calibration setting
6. external temperature probe setting (shown only when the probe is connected)
7. OnOff/PID temperature control algorithm setting
8. buzzer setting
9. brightness of the display on Standby setting
10. GSM function setting
11. device info
12. lock/unlock PIN setting
Touching opens the submenu and then the flashing highlights the parameters of the submenu.
9.1 Operating mode setting
This menu is used to select the operating mode of the device:
• Manual
• Off
• Antifreeze (only if the thermostat is set on "heating")
Using and select the required mode and confirm with .