Immergas SMARTECH PLUS Installation Instructions And Warnings page 2

Chrono-thermostat wall-mounting (Fig. 4):
install the mount (2) fixing it to the wall with expansion
plugs (1) and the supplied screws (3).
N.B.: pay attention to correctly position the spirit level
(5) downwards.
Release the body of the Chrono-thermostat (4) from the ta-
ble base by pulling it, then insert the 2 LR03 (AAA) batteries
supplied in the specific compartment (Fig. 5), then press-
couple the Chrono-thermostat on the mount (2). To replace
the batteries, release the Chrono-thermostat (4) from the
wall mount (2) by pulling it and repeat the above operations.
At the end of the installation, remove the protective film
from the display of the chrono-thermostat.
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1.8 Gateway - Chrono-thermostat coupling.
After having powered the generator, the Gateway and
the Chrono-thermostat, wait 30 seconds before perfor-
ming any setting on the system so that communication
between the Gateway, generator and Chrono-thermostat
is properly established.
N.B.: all "Smartech Plus" chrono-thermostats are already
configured to work correctly with your Gateway, so they
do not need any additional configuration to make them
work.
In case of a malfunction, the Gateway and Thermostat
can be re-coupled by proceeding as follows:
- make sure you have turned on the Gateway for at least
5 minutes;
- Keep the "Reset" button on the Gateway pressed until
the indication on the "BLE" LED switches from 5 quick
blinks a second to one blink a second;
- with Chrono-thermostat set on the main window, press
and hold the same key for 3 seconds until the "Mode"
or "Program" menu appears, then rotate the Chrono-
thermostat to display the "Settings" menu. At this point
again press and hold the key to select the "Diagnostic"
menu and press to confirm and to enter the menu;
- press the Chrono-thermostat again, the message "Pai-
ring" will appear on the display. When "Disconnected"
appears, the Chrono-thermostat is paired to the Gate-
way;
- press and hold the Chrono-thermostat to go back to
the main menu;
- switch off (removing power) and switch the Gateway
back on.
1.9 Application download and installation on mobile
devices (smartphone).
Using the mobile device on which to install the appli-
cation, connect to the App store of reference: App Store
(Apple) or Play Store (Android) and type in "Immergas
Smartech" in the search field. The app works with IOS 12
operating system or higher (Apple) and Android 10 or
higher. Select the free "Smartech" application and wait for
its download and installation on the mobile device used.
Open the "Smartech" App and download the instruction
manual by pressing "Download Instructions and war-
nings". Follow its instructions to register and pair it with
the installed Smartech Plus system.
The manual can be downloaded from the website www.
immergas.com.
N.B: the encryption method of the Wi-Fi network must be
WPA2 PSK; otherwise malfunctions could occur.
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1.10 Type of system configuration without Wi-
.
Fi connection
The Smartech Plus system is paired to the type of generator
connected by completing the user registration procedure
on the "Smartech" app (paragraph 1.9). If there is no Wi-
Fi connection available when first starting the system
(and therefore the above-mentioned procedure cannot
be performed), the type of generator connected can be
selected temporarily as follows:
- make the electrical connections on the Gateway as
described in Paragraph 1.5, then power the device;
- insert the batteries in the Chrono-thermostat;
- once the Immergas logo is displayed, keep the
Chrono-thermostat pressed until a dot is shown and
then press again until the list of the type of generators
appears;
- rotate the Chrono-thermostat to the desired type of
generator;
- press the Chrono-thermostat to confirm.
4. WIRING DIAGRAMS
GATEWAY CONNECTION WIRING DIAGRAM
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A30
5
CONNECTION TO BOILER VIA COMMUNICATION BUS (IMG BUS)
A30
2
CONNECTION TO BOILER VIA ROOM THERMOSTAT CONTACT (On/Off), from models without communication bus
A30
N.B: the selection described above is temporary and will
be lost when the batteries of the Chrono-thermostat are
removed. In this case, the default setting value ('IMG BUS'
generator) is restored.
2. SAFETY MODE
SMARTECH PLUS
The Smartech Plus system activates the 'Safety mode' if
Bluetooth communication fails between Gateway and
Chrono-thermostat.
Basically this could occur if the two devices are further
away than the maximum allowed distance for the specific
installation (in this case the message ' Disconnected'
appears on the Chrono-thermostat display), or if the
Chrono-thermostat batteries are dead.
In 'Safety mode' the Gateway keeps the last status received
from the Chrono-thermostat for 30 minutes, after which
the generator only guarantees production of domestic
hot water with a setpoint of 50°C. If communication with
the Chrono-thermostat is reset, the system resumes its
normal functioning.
Key:
A30 - Smartech Plus Gateway
G4 - Gateway DC power supply unit
X3 - Modbus RS485
X4 - Potential-free contact Max. 0.5 A - 230 Vac
(generator operation request)
L/N - 230 Vac / 50 Hz power supply
X1 - +5 Vdc power supply
X2 - IMG BUS
BR - Brown
BL - Blue
W - White
Y - Yellow
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N.B.: this mode is not activated if the generator is con-
trolled by the Gateway only via the operation request con-
tact (in this case, if communication with the Chrono-ther-
mostat fails, the Gateway removes the operation request
and any system antifreeze protections are fully controlled
by the generator).
N.B.: in this mode, room antifreeze protection is no
longer available; only that of the generator remains active.
3. TECHNICAL CHARACTERISTICS
CHRONO-THERMOSTAT:
• Dimensions: ... diameter 71,5 mm, thickness 35,5 mm
• Wireless technology: ....................... Bluetooth 4.1 BLE
• Thermostat / Gateway
communication distance: ......................Max. 10mt (**)
• Reading range: ....................................from 0°C to 40°C
• Reading accuracy: ............................................+/- 0.1°C
• Setting range: ...................................from 4.5°C to 30°C
• Temperature increase range: ................................. 0.5°C
• Power Supply: ........2 LR03 (AAA) 1.5V batteries (not
rechargeable) battery life about 1 and a half years (*).
N.B.: IMG BUS is a communication protocol only used by
certain Immergas appliances,
(see the instruction booklet of the appliance);
N.B.: ModBus RS485 is a communication protocol only
used by certain Immergas appliances,
(see the instruction booklet of the appliance);
N.B.: the X2 (IMG BUS) and X3 (ModBus RS485) connec-
tors must be connected to SELV devices.
N.B.: the cables to be used for X2 and X3 connections must
have an adequate cross-section and minimum isolation
of 300V;
N.B.: use the two wire sleeves supplied with the power
supply unit, inserting them on the White (W) and Yellow
(Y) wires on the side of the terminal block (X4), to further
isolate them from the Gateway inside;
N.B.: For connection via ModBus RS485, apply the 120
Ohm resistance supplied on the relative terminals of the
appliance in parallel with the Modbus connection, (see the
instruction booklet of the appliance).
Key:
A30 - Smartech Plus Gateway
G4 - Gateway DC power supply unit
1 - Boiler
2 - Cable not supplied by Immergas
BR - Brown
BL - Blue
W - White
Y - Yellow
N.B.: connect the X2 terminals to the IMG BUS boiler
terminals normally provided for CAR X2 communication,
indicated as 44 (or 40) and 41. (See the instruction booklet
of the appliance);
N.B.: the Gateway can be powered by being connected to
terminals A (L line) and B (N Neutral) (230 Vac / 50 Hz
auxiliary boiler power supply) if available,
(see the instruction booklet of the appliance).
Key:
A30 - Smartech Plus Gateway
G4 - Gateway DC power supply unit
1 - Boiler
BR - Brown
BL - Blue
W - White
Y - Yellow
N.B.: connect the terminals X4 of the Gateway to the boiler
terminals provided for connection of the Room Thermostat,
indicated as 40 and 41,
(see the instruction booklet of the appliance);
N.B.: the Gateway can be powered by being connected to
terminals A (L line) and B (N Neutral) (230 Vac / 50 Hz
auxiliary boiler power supply) if available,
(see the instruction booklet of the appliance).
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