HT SMART Plus User manual

“SMART Plus”
Rev.3 agosto 2020
Electronic control for towel radiators
SMART Plus is an electronic thermostat for the automatic control of electric
towel radiators. By means of an external sensor it is capable of keeping the
ambient temperature to a desired value.
Ten different electric resistances are available in a range between 100W and
1000W.
Operative modes: Comfort, Boost, Standby/Antifreeze, Timer12
and Timer24.
•“Comfort” mode: The thermostat keeps the room
temperature at the value set by the user.
•“Boost” mode: In “Boost” mode the heating element is
activated for a period of 2 hours independently of the
configured temperature. The temperature is however
automatically controlled in order not to exceed 29°C.At the
end of the 2 hours period, the device returns to “Comfort”
mode.
•“Timer”mode: The control system enters into “Boost” mode
for 2 hours; after that it returns into “Comfort” mode for 22 or
10 hours (period configurable by the user) and then it enters
again into “Boost” mode for 2 hours. This sequence is
repeated endlessly.
Available colors: - White(RAL 9003).
- Crome.
•“Stand-by” mode: In this mode the device goes in standby and the heating element is powered off.
SMART is a certified product:
SMARTis compliant with the following standards:
-Eco-design Directive for Energy-using Products, 2005/32/EC (<0,5W).
-EN 60335-1:2012 -EN 60335-2-30:2011 -EN 60335-2-43:2005
-EN 61000-3-2:2004 -EN61000-3-3:1995 -EN 50366:2003
-EN 55014-1:2008 -EN 55014-2:1998

“SMART Plus”
Electronic control for towel radiators
Rev.3 agosto 2020
Product
Electronic control for towel radiators
Applications
Towel radiators
Insulation class
Classe I ClassII
IP level
IP44
Temperature settings
Digital
Selectable temperature range
14°C ÷ 29°C - 7°C Antifreeze
Operational temperature
-10°C ÷ 40°C
Maximal power
See table below
Supply voltage
230VAC 50Hz
Size
See figure below
Warranty
2 years
Standards
-EN 60335-1:2012 -EN 60335-2-30:2011 -EN 60335-2-43:2005
-EN 61000-3-2:2004 -EN61000-3-3:1995 -EN 50366:2003
-EN 55014-1:2008 -EN 55014-2:1998
Approval mark
CE
Case
ABS-VO
Environmental directive
WEEE, RoHS
Electromagnetic compatibility
89/336/EEC
Operative modes
Comfort, Boost2h, Timer12h, Timer24h, Standby/Antifreeze, Key-lock.
Thermostat status indicator
Boost/Timer LED (red/green/amber).
Comfort Bar with 6 LEDs: 1 blue, 1 green, 2 yellows, 2 reds
Connection to mains
3 Cables (neutral, live, earth); Italian plug; Swiss plug: UK plug:; Schuko
plug ; 2 Cables (neutral, live,).
Available colors
White (RAL 9003); Chrome.
Max. temperature of the thermalfuse
152°C
Power
(W)
100
200
300
400
500
600
700
800
900
1000
Energy density
(W/Cm2)
1.5
2.9
4.0
4.1
4.1
4.1
4.0
4.0
4.0
4.0
L (heating element)
(mm)
350
350
370
430
450
560
630
700
760
830

“SMART Plus”
Electronic control for towel radiators
Rev.3 agosto 2020
Example of automatic temperature control performed by the Smart Plus (configured temperature: 20°C and
21,00
20,80
20,60
20,40
20,20
20,00
19,80
a cold wall with a temperature of -5°C).
DM= maximal drift = 0.06
AM= Tmax –Tmin = 0.12
CA= 0.075
DM AM
19,60
19,40
19,20
19,00
2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60
CA 2
2
Preserve with care the present instruction sheet and read carefully before using the device.
•The present device has been designed for exclusive use on a towelradiator.
•The thermostat is designed for heating the liquid contained inside a towel radiator in combination with a
heating element. Any other use is forbidden.
•Before using, carefully ensure that the line voltage is the same as that specified for the device (see
technical specifications)
•Only use heating elements compatible with the type of used towelradiator.
•Disconnect power supply before cleaning or before performing maintenance of theproduct.
•In case of damage of the power supply cable shut down the device and do not tamper with it. The
damaged power supply cables can be replaced exclusively by the manufacturer or by an authorized
service center. Failure to comply with the above rules could lead to compromised system safety and void
the warranty.
•Store and transport the heating element exclusively in the protecting packaging.
•Replacement of the heating element can be done exclusively by themanufacturer.
WARNING
RISK OF ELECTRIC SHOCK!
Disconnect power supply before proceeding with installation.
Temperature °C

“SMART Plus”
Electronic control for towel radiators
Rev. 02 –April 2015
SI
NO
10) When the level of the liquid stops growing wait foradditiona
5 minutes then stop heating.
11) If necessary, top up the radiator before the liquid cools dow
(keep the temperature of the internal liquid under control).
12) Close the top opening of the radiator with theappropriate
cap.
13) Hook the radiator to the wall.
14) Connect the device to the mains
(4)
(3)
(1)
(2)
Installation guide
For authorized installer only
1) Insert the heating element in the threaded opening located on the bottom part of the radiator.
2) Securely fasten the electric resistance to the body of the towel radiator with a 22mm wrench.
3) The special sheath ensures a secure mounting and eventually allows a slight supplemental torsion to perfectly
align the thermostat with theradiator.
4) Tilt the radiator as in fig. 3, making sure that the opening on top of the radiator is located on the highest side.
WARNING. Donot lean the radiator on the electronic control!
5) Fill the radiator with the specific liquid.
6) Put the radiator back in vertical position and check the internal level of the liquid (fig. 4).
7) Ensure a proper fasteningof the heating element in the radiator.
8) Connect the device to mains and start heating (the top opening of the radiator must remain open!).
9) Set the maximal temperature and check the level of the internal liquid.
- Due to thermal expansion the liquid could brim over the radiator.
- Remove the exceeding liquid (do it with care to avoid burns!) in order to keep the thermostat dry
and avoid the liquid reaching the border .
• Disconnect the device from power supply before proceeding with installation..
• Protect the device with a 30mA RCD circuit breaker .
Rev.3 agosto 2020

“SMART Plus”
Electronic control for towel radiators
User Guide
"Comfort Bar":
Indicates the selected
temperature and
further accessory
information
[On/Standby] button.
Heating element
1/2" GAS thread for
fastening on the
radiator.
[+] and [-] buttons:
For setting the desired
temperature.
“Boost/Timer” Button:
To select one of “Boost”,
“Timer12” and “Timer24”
modes
Comfort bar
“Boost/Timer” Led:
Small red/green/amber light
indicator to inform about the active
mode
Power cord
External NTC sensor:
Used for automatic
temperature control
15.5°C*
14°C
7°C*
* Blinking LED
18.5°C*
17°C 20°C 21.5°C*23°C
24.5°C*
26°C
27.5°C*
29°C
Rev.3 agosto 2020

“SMART Plus”
Electronic control for towel radiators
Press the [On/Standby] button to turn on the device or to enter the “Standby/Antifreeze” mode.
NOTE: When the device is switched to "Standby/Antifreeze" mode, it beeps twice for 0.5sec.
When the device is switched to “On” mode (i.e. it is turned on), it beeps for 1sec.
“Comfort” mode: In this mode the desired temperature of the ambient is selected. The temperature
value is set through the [+] and [-] buttons to one of the following values: 7°C (Antifreeze); 14°C, 15,5°C,
17°C, 18,5°C, 20°C, 21,5°C, 23°C, 24,5°C, 26°C, 27,5°C, 29°C.
The rightmost lit or blinking LED in the “Comfort bar” indicates the selected temperature (see table and
figures below).
Examples
First configurable “Comfort”
temperature: 14°C. Press
once the [+] button.
The configured temperature is of
18.5°C (first yellow LED blinking).
Press 4 times the [+] button.
The configured temperature is of
23°C (second yellow LED
permanently lit). Press 7 times the
[+] button.
* "Antifreeze" temperature
“Standby”mode:
In this mode the device goes in standby and the heating element is powered off.
Maximum configurable
temperature in
“Comfort” mode: 29°C.
“Antifreeze” temperature: 7°C
(minimal configurable
temperature)
LED of the
"Comfort bar"
Blinking
LED
Continuous
LED
Blue
7°C*
14°C,
1
st
Green
15.5°C,
17°C,
2
nd
Green
18.5°C,
20°C,
1
st
Red
21.5°C,
23°C,
2
nd
Red
24.5°C,
26°C,
27.5°C,
29°C.
Rev.3 agosto 2020

Rev. 02 –April 2015
Standby
Comfort
Press once
BOOST 2h
Press for 3 sec
Press (at least) for 5 sec
BOOST
Timer 24
BOOST
Timer 12
This mode activates the heating element to the maximum power for 2hrs (for safety reasons the maximal
temperature is limited to 29°C).
To exit the “Boost” mode press the [Boost/timer] button.
“Boost” mode indication: "Boost/Timer" LED has red color and it blinks.
“Timer24” mode: Press the [Boost/Timer] button for 3 seconds to activate this mode.
The control system activates the “Boost” mode for 2 hours, after that it returns into “Comfort” mode and
after 22 hours the “Boost” mode is started again for 2 hours. This sequence will repeat endlessly.
To exit the “Timer24” mode press the [Boost/Timer] button.
NOTE: During the first cycle the duration of the “Comfort” mode is of 21 hours.
“Timer24” indication:
During 2hrs “Boost”: “Boost/Timer” LED blinking green.
During 22hrs “Comfort”: “Boost/Timer” LED permanent green.
“Timer12” mode: Press the [Boost/Timer] button for more than 5 seconds to activate it.
The control system activates the “Boost” mode for 2 hours, after that it returns into “Comfort” mode and after
10 hours the “Boost” mode is started again for 2 hours. This sequence will repeat endlessly.
To exit the “Timer12” mode press the [Boost/Timer] button.
NOTE: During the first cycle the duration of the “Comfort” mode is of 9 hours.
“Timer12” indication during 2hrs “Boost”: “Boost/Timer” LED blinking amber.
During 10hrs “Comfort”: “Boost/Timer” LED permanent amber.
NOTE: For safety reasons, the maximal temperature of the ambient during the 2hrs boost is limited to 29°C.
Functional diagram
“SMART Plus”
Electronic control for towel radiators
“Boost” mode: Press the [Boost/Timer] button to activate this operative mode.
Rev.3 agosto 2020

This product may not be treated as ordinary household waste. It has to be disposed in proper waste collection
sites. In case of replacement it shall be returned to the distributor.
Such an end-of-life treatment of the product will preserve the environment and will reduce consumption of natural
resources.
This symbol applied to the present product indicates the obligation to bring it to a proper waste collection site,
in order to let it be disposed according to 2002/96 / CE (RAEE - WEEE) directives.
Boost/Timer LED functioning summary
Blinking red
"Boost" mode active. The heating element is powered for 120 minutes
(temperature of the ambient automatically limited to 29°C).
Blinking
Green
"Boost" function active in Timer24 mode. The heating element is powered
for 120 minutes (temperature of the ambient automatically limited to
Permanent
green
"Comfort" function active for 22hrs in Timer24 mode.
Blinking
amber
"Boost" function active in Timer12 mode. The heating element is powered
for 120 minutes (temperature of the ambient automatically limited to
Permanent
amber
"Comfort" function active for 10hrs in Timer12 mode.
Key lock function: It is possible to lock the buttons of the device to avoid inadvertent modifications of
the settings. Press together the [+] and [-] buttons for 3 seconds to lock all the buttons except the
[On/Standby] button.
To unlock the buttons press again together the [+] and [-] buttons buttons for 3 seconds. When key
lock is activated the device beeps twice. When key lock is deactivated, the device beeps four times.
Additional indications provided by the “Comfort Bar”:
- The two central (yellow) LEDs blink when a button is pressed: Key lock is active.
- The external (blue and red) external LEDs blink: Failure on the temperature sensor, the
heating element is deactivated. Contact customersupport.
Notes. In case of interruption of power supply, the system will recover from the previous operative
mode*, with the exception of "Boost" and "Timer" modes.
*The status of the device is saved 5 seconds after the modification.
.Repairs carried out by unauthorized personnel invalidate warranty.
The manufacturer reserves the right to make any changes to the product described in this
manual, at any time, and without prior warning.
Acessory: To allow a mixed usage of the SMART device, connect the
T-piece to the towel radiator, insert the SMART device into the vertical
manifold of the T-piece and connect the return line of the heating circuit
to the orthogonal connector of the T-piece.
Available colors: White, Chrome. DISPOSAL
“SMART Plus”
Electronic control for towel radiators
Rev.3 agosto 2020