Nexus NEO User manual

NEO / NEO WIFI
AMBIENT TEMPERATURE & POWER REGULATOR CONTROL
Stone Connect Wi-Fi
INSTALLATION, OPERATING AND USER MANUAL
MAY ONLY BE PERFORMED BY QUALIFIED PERSONS
PNEOr to installing and using the temperature controller, please carefully read this
manual and keep it for future reference

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TABLE OF CONTENTS
1General warnings .........................................................................................................................4
1.1 Disclaimer ............................................................................................................................ 4
1.2 Warranty............................................................................................................................... 4
1.3 Product compliance............................................................................................................ 4
1.4 General Warnings............................................................................................................... 4
1.5 Safety Warnings ...................................................................................................... 5
2Product presentation ...............................................................................................................................6
3Symbols And Glossary............................................................................................................................6
4Technical Specification Tables ..............................................................................................................8
5Installation – Qualified technicians only ...............................................................................................9
5.1 Before you start................................................................................................................... 9
5.2 Towel Rail Warnings ............................................................................................ 10
5.3 Power supply Warnings ....................................................................................... 10
5.4 NEO / NEO WIFI position................................................................................................ 11
5.4.1 TOWEL RAIL POSITION .................................................................................................................................... 11
5.4.2 SUPPLY CORD POSITION................................................................................................................................ 12
5.4.3 NEO / NEO WIFI REGULATING BOX POSITION.......................................................................................... 12
5.5 NEO / NEO WIFI installation........................................................................................... 13
5.5.1 IF NEO / NEO WIFI IS NOT CONNECTED TO THE HEATING ELEMENT............................................... 13
5.5.2 IF NEO / NEO WIFI INCL. HEAT. ELEMENT IS NOT CONNECTED TO THE TOWEL RAIL ................ 15
5.6 Cleaning ............................................................................................................................. 16
5.7 Uninstalling NEO / NEO WIFI......................................................................................... 17
5.8 Notes for disposal of NEO / NEO WIFI valid for the European Union ..................... 17
6Use and functioning...............................................................................................................................17
7Controller Functions ..............................................................................................................................18
7.1 NEO / NEO WIFI buttons maps...................................................................................... 18
7.2 First start ............................................................................................................................ 19
7.3 Standard functions ON-OFF ........................................................................................... 20
7.4 Mode selection.................................................................................................................. 21
7.5 Mode editing...................................................................................................................... 21
7.6 Boost mode........................................................................................................................ 22
7.7 Weekly program edit ........................................................................................................ 23
7.8 Weekly program view....................................................................................................... 24
7.9 Secondary functions......................................................................................................... 25
7.9.1 Open window ........................................................................................................................................................ 25

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7.9.2 Timing .................................................................................................................................................................... 26
7.9.3 Factory reset......................................................................................................................................................... 27
7.10 Lock .................................................................................................................................... 27
7.11 WIFI connection................................................................................................................ 28
8Maintenance ...........................................................................................................................................29
9Diagnostics..............................................................................................................................................29
10 Supplied accessories, consumables and spare parts......................................................................29
11 Power cable size reduction ..................................................................................................................30

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1 GENERAL WARNINGS
1.1 Disclaimer
The manufacturer declines all responsibility for any inaccuracies in this document due to printing
or transcription errors. It reserves the right to make any alterations to its products deemed
necessary or useful. The manufacturer will not be held responsible for faults due to incorrect
installation.
1.2 Warranty
NEO / NEO WIFI is guaranteed against defects in materials and/or workmanship for a period of
twenty-four (24) months from the date of purchase.
The guarantee will not be effective if the faults found are ascribable to the Buyer’s carelessness
and/or if the Products have not been used according to their technical specifications and in the
event of wrong maintenance by non-authorized engineers, cleaning with unsuitable procedures or
materials, improper storage, handling and transport, or any other circumstances that cannot be
ascribed to manufacturing defects for which manufacturer is responsible.
The guarantee of NEO / NEO WIFI is not valid in case of improper use or wrong installation.
1.3 Product compliance
APPLICABLE EUROPEAN DIRECTIVES AND STANDARDS
Applicable Directives
2014/53/EU Radio Equipment Directive (RED)
2014/35/EU Low Voltage Directive (LVD)
2014/30/EU Electromagnetic Compatibility Directive (EMC)
2011/65/EU RoHS II Directive, Regulation REACH (EC 1907/2006)
2012/19/EU WEEE Directive
2009/125/EC ErP Directive - EcoDesign
Electric radiator operation is in full compliance with EN 60335-2-30
1.4 General Warnings
•Read the instructions carefully before installing and using the electronic control (hereinafter
referred to as NEO / NEO WIFI or appliance) and retain the instructions for future
reference.
•Installation of NEO / NEO WIFI must be performed only by qualified technicians which
assume complete responsibility for the definitive installation and consequent good
functioning of the product installed.

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•Installation must be compliant with all applicable safety regulations and laws, national,
regional, provincial and town council Standards present in force in the Country in which the
final product has been installed, as well as the instructions contained in this manual. The
Manufacturer cannot be held responsible for the failure to comply with such precautions.
1.5 Safety Warnings
• Children of less than 3 years must be kept away unless continuously supervised.
• This appliance can be used by children aged from 8 years or over and by persons with
reducedphysical, sensory or mental capabilities or lack of experience and knowledge if they
have been given supervision or instruction concerning use of the appliance in a safe way
and they understand the hazards involved. Children shall not play with the appliance.
• Cleaning and user maintenance shall not be made by children without supervision.
• Children aged from 3 years and less than 8 years shall only switch on/off the appliance
provided that it has been placed or installed in its intended normal operating position and
they have been given supervision or instruction concerning use of the appliance in a safe
way and understand the hazards involved. Children aged from 3 years and less than 8
years shall not plug in, regulate and clean the appliance or perform user maintenance.
• CAUTION — Some parts of this appliance can become hot and may cause burns.
Precautions should be taken to ensure that prolonged contact with the el. towel rail cannot
occur. Particular care should be taken in confined areas where accidental prolonged
contact with the el. towel rail could be more likely to occur. Particular attention has to be
given where children and vulnerable people are present.
• IMPORTANT: In order to disconnect the incoming supply for the purpose of isolation during
installation and maintenance it is recommended for the distributor’s service fuse to be
withdrawn or the circuit breaker at the distribution board to be switched off whilst work is in
progress.
• Do not install NEO / NEO WIFI with an electric heating element not equipped with pre-set
protection devices designed to prevent over-heating of the el. towel rail in abnormal
conditions.
• Do not power NEO / NEO WIFI on before it has been completely installed in a properly filled
towel rail with the electric heating element recommended by the manufacturer
• Check that the electricity supply system is connected through an MCB (Magnetothermic
Circuit Breaker) and a high sensitivity current differential and overcurrent relay of 30 mA
RCCB (Residual Current Circuit Breaker) connected directly to the socket or connection
box in use.
• If NEO / NEO WIFI is not fitted with a supply cord with a plug, an omni-pole disconnection
from the supply is required, incorporated in the fixed wiring, in accordance with the wiring
rules. Switches intended to ensure all-pole disconnection must be directly connected with
the supply terminals and must have a contacts distance of at least 3 mm in each pole. The
switch intended to ensure all-pole disconnection must be dedicated exclusively to the
appliance.
• NEO / NEO WIFI is suitable for use on an A.C.~ electrical supply. Before installation check
that the supply voltage corresponds with that marked on the electronic control.
• Do not insert metal objects or fingers or any other objects, even temporarily, into the
connection areas where NEO / NEO WIFI is connected to the towel rail.

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• Avoid direct contact of NEO / NEO WIFI with any chemical product or alcohol, including the
liquid contained in the towel rail.
2 PRODUCT PRESENTATION
This product is an electrical / electronic component designed to be assembled, used and possibly
replaced in case of failure uniquely in the specific equipment for which it is intended.
NEO / NEO WIFI is an electronic ambient temperature controller designed for regulating the
thermal power (according to the ambient temperature) of an electric heating element installed in a
towel rail configured for heating rooms in the home.
Any other use is strictly forbidden. The type of regulation is PI temperature regulation.
NEO / NEO WIFI can be connected to a fully electric towel radiator or a hybrid electric-hot water
heater (dual fuel, central heating radiator).
3 SYMBOLS AND GLOSSARY
Figure 1: Components of NEO / NEO WIFI regulating box (front and back view)

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Component
Description
Touchscreen interface
Capacitive touchscreen interface displaying current system status (in
black or white)
Grub screw seat
Position of the grub screw in order to fix NEO / NEO WIFI to the
Electric heating element connection
Power supply cable
230 V power supply cable with plug or without plug
Figure 2: Electric heating element components
Electric Heating Element
Component
Description
Cartridge
Heating part of the electric heating element
Thread
Connection part to be fitted into the towel rail
Fixing part
Necessary part to tighten the electric heating element
into the towel rail with a 25 mm wrench
Gasket
O-ring gasket designed to be compressed between
the electric heating element connection and the upper
plastic part of the NEO / NEO WIFI in order to prevent
water leakage
Electric heating element
connection – Nexus connector
part necessary for coupling with NEO / NEO WIFI (and
other compatible controllers with Nexus Easy
Connect)

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STANDARD PROVIDED KIT
Element
Description
O-Ring gasket
Grub screw
Allen key
22mm x 1mm gasket
designed to allow NEO / NEO
WIFI coupling with the electric
heating element connection
part
A headless screw having a
socket for a hexagon Allen
key used to secure the plastic
housings of the NEO / NEO
WIFI onto the electric heating
element connection, into the
grub screw seat (Figure 1)
4 TECHNICAL SPECIFICATION TABLES
NEO / NEO WIFI and the electric heating element power must be carefully selected in
proportion to towel rail size and thermal output. To select NEO / NEO WIFI and the heating
element electrical power, please refer to the towel rail manufacturer instructions, when a
certification related to the complete system (according to EN 60335-2-30) issued by an
European recognized institute (like SEMKO, VDE, IMQ…) is available. The installer shall
verify that NEO / NEO WIFI System operates in conformity with Table 2.
Electric heating element
Power (W)
200
400
600
800
1000
1200
Length (mm)
320
480
680
820
980
1150
Table 1
NEO / NEO WIFI
Power supply
230 V / 50 Hz
Electric Heating element power
200 ÷ 1200 W
Insulation class
Class I
Colours and finishing
White or chrome
Touch interface display
White or black
Dimensions
140 x 68 x 64 mm
Water protection rating
IPX4

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Maximum altitude above sea level
2000m
Operating ambient temperature
0°C ÷ 40°C
Storage temperature
-20°C ÷ 70°C
Max Humidity Level
RH 85% at 25°C (without
condensation)
Table 2
5 INSTALLATION –QUALIFIED TECHNICIANS ONLY
ALL ELECTRICAL INSTALLATION WORK MUST BE CARRIED
OUT BY A QUALIFIED ELECTRICIAN
Read the general warnings and safety warnings before installation.
IMPORTANT: Always disconnect the electricity supply from the mains during installation
and maintenance. It is recommended that the fuse is withdrawn, or circuit breaker
switched off at the distribution board while work is in progress (turning off the switch is not
sufficient).
During installation, de-installation and maintenance, ensure working place safety until the
operation is completed.
5.1 Before you start
•Avoid collisions during the handling. Do not deform NEO / NEO WIFI.
•Avoid the contact of cables and of parts of the NEO / NEO WIFI with sharping corners
and do not cause squashing.
•Do not subject the cables to traction. Do not apply concentrated pressures on the NEO
/ NEO WIFI surface.
•Any contact between plastic parts of NEO / NEO WIFI and chemical products or
alcohol (including the water or the mixture water+ glycol inside the tower rail) must be
avoided.
•Check the pack to ensure you have all of the parts listed at paragraph 3with no visible
signs of damage. Make sure that NEO / NEO WIFI parts are completely dry and have
no defects. If any of the part is missing or appears damaged, you should return the
device to the point of purchase.
•Check that you have the correct size of electric heating element and of NEO / NEO
WIFI for your towel rail. It is essential that the correct sized electric heating element
and NEO are installed in line with the recommendation stated on the packaging or
instruction of your towel rail CERTIFIED BY A EUROPEAN RECOGNISED
APPROVAL INSTITUTE. IF YOU ARE NOT SURE OF THAT, PLEASE REFER TO

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CONTACTS SECTION.
•When you are ready to start, make sure that you have the right tools at hand, plenty of
space and a clean dry area for assembly.
•Installation must be carried out in accordance with current standards and laws in force
in the country in which the system is installed.
•Before installation, never switch the NEO / NEO WIFI on to verify functioning
effectiveness.
•Don’t use the NEO / NEO WIFI regulating box to lean the electrical towel rail on the
floor as you can damage the plastic housing and water can penetrate inside with a risk
of electrical shock.
5.2 Towel Rail Warnings
•The electric radiator with regulator use is intended only for heating rooms in the home.
Any other use is forbidden.
•The heating element must be fitted in the towel rail before mounting the rail to the wall.
•The towel rail has to be mounted parallel to the wall using the brackets recommended
by the towel rail manufacturer.
•It is recommended to use in any installation (Electric only and Dual fuel) a self relief
pressure valve (like a 3 Bar valve) on the top part of the rail in the opposite side where
the NEO / NEO WIFI is installed. In case of valve intervention, it is quite normal for
liquid relief and water excess to possibly reach the floor. Please, take this aspect into
consideration.
•In Electric only NEO / NEO WIFI installation, fill the towel rail with certain percentage of
water according to the towel rail manufacturer instructions. In case of missing
instructions, we recommend to fill the towel rail approximately 90% with approximately
90% pure water and glycol mixture.
•In Electric only NEO / NEO WIFI installation the towel rail must have a sufficient air gap
to allow for water expansion.
•Making sure that the NEO / NEO WIFI heating element is completely immersed in
water.In case of Dual fuel installation, a T-piece of 40mm maximum length (male
thread excluded) is required: we recommend to wrap a small quantity of PTFE tape
around the heating element thread and the T-piece thread.
•All metallic parts of the electrical towel rail fitted with NEO / NEO WIFI and powered
must not exceed the temperature limits according to the applicable standard also in
case of NEO / NEO WIFI continuously powering the electric heating element.
For all other aspects, refer to EN 60335-1 and EN 60335-2-30.
5.3 Power supply Warnings
•Do not connect NEO / NEO WIFI to the power supply until the installation into a
properly filled towel rail is completed.

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•Make sure that the power lines are appropriate for the load required according to
technical specification tables (see part 4).
•Class I NEO / NEO WIFI (with yellow-green wire or earthed plug) must ONLY be
connected to sockets or connector blocks with earthed contacts according to national
standards and wiring regulations in force
•Protect the electricity supply with an RCCB (Residual Current Circuit Breaker) device.
•The electrical heating element must be connected to a suitable electricity supply by
way of the cable provided. This should be via a fused spur in accordance with the IEE
Wiring Regulations. If sited in the bathroom, the Fused Connection Unit must be
located out of reach of persons using the basin, shower or bath. If in doubt, consult a
qualified electrician.
NEO / NEO WIFI supply cord
WITH plug
The socket and electricity supply must be appropriate for the required power. Do not
use extensions.
The socket must be compatible with the NEO / NEO WIFI supply cord plug. Do not use
adapters.
5.4 NEO / NEO WIFI position
NEO / NEO WIFI must be fitted into the towel rail BEFORE mounting the towel rail to the
wall.
5.4.1 TOWEL RAIL POSITION
•Do not install NEO / NEO WIFI into a towel rail fitted in ZONE 0 or ZONE 1 (Zone
definition IEC 60364-7-701 in Figure 3).
•The towel rail must be installed in a completely vertical wall.
•The towel rail has to be mounted parallel to the wall using the brackets recommended
by the towel rail manufacturer.
•NEO / NEO WIFI is protected against water ingress according to its IPX4 degree of
protection. The towel rail where NEO / NEO WIFI is fitted must be mounted inside the
zone of the bathroom according to its IP degree of protection and electrical legislation
in force. In case of doubt about the correct installation zone, refer to the relevant public
institution.
•NEO / NEO WIFI must not be within reach of people using the basin, shower or bath.

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Figure 3
5.4.2 SUPPLY CORD POSITION
The supply cord must be connected to a proper
socket or to a non-switched fused spur (without
an intermediate plug for NEO / NEO WIFI
supplied without plug) which must be at least 25
cm from the floor according to the wiring
regulations in force in the country where the
installation is carried out. Figure 4 shows
examples of positioning of the system.
Figure 4 NEO / NEO WIFI positioning
5.4.3 NEO / NEO WIFI REGULATING BOX POSITION
•NEO / NEO WIFI must only be fitted vertically in the bottom part of the towel rail.
•Electrical towel rail must NOT be installed with the NEO / NEO WIFI regulating box
located at the top. This can seriously damage the control box and create a dangerous
situation with a risk of fire.
•NEO / NEO WIFI must be installed at distance of 40 mm (minimum) and 80 mm
(maximum) from the wall. Figure 5 shows the optimal positions for the NEO / NEO WIFI.

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Figure 5 NEO / NEO WIFI positioning
5.5 NEO / NEO WIFI installation
ATTENTION! Be careful when handling the regulator, especially when putting it on!
5.5.1 IF NEO / NEO WIFI IS NOT CONNECTED TO THE HEATING ELEMENT
ELECTRIC ONLY
1. NEO / NEO WIFI’S CONNECTION AND COUPLING
a. Insert NEO / NEO WIFI into the electric heating element connection, applying slight
pressure until NEO / NEO WIFI is fully inserted.
b. Keep NEO / NEO WIFI pressed against the heating element in the towel rail and
insert the provided grub screw into its spot; make sure there is no room between
the device and the electric heating element fixing part (see part 3).

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2. GRUB SCREW INSERTION
a. Keeping NEO / NEO WIFI pressed against the heating element in the towel rail, make
sure the grub screw is in its right positioning spot (grub screw seat) as shown in figure
below.
b. Using the provided Allen key tighten the grub screw until it comes into contact and it is
fully inserted in its spot, so that the NEO / NEO WIFI is securely fixed to the electric
heating element and the O-ring gasket is well in contact with both surfaces
c. Make sure the grub screw is NOT in other wrong positions by checking the alignment
with the back of NEO / NEO WIFI, as shown in figure below.

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3. TOWEL RAIL INSTALLATION
If the display is facing the wall after tightening the heater, always adjust
the heating element by turning it anti-clockwise with the 25mm
spanner. The seal is designed to adjust to a certain amount of releasing
without starting to leak.
•Install properly the electrified towel rail with the NEO / NEO WIFI
into the wall according to towel rail manufacturer instructions (See
part 5.2).
4. CONNECTION TO THE MAINS
a. Connect the NEO / NEO WIFI cable to the mains power according to current wiring
regulations in force in the country where the product is installed. Make sure that the
power lines are appropriate for the load required.
b. Check electric strength on the appliance after fitting NEO / NEO WIFI to the electric
towel rail according to the instructions in Appendix A of EN60335-1: “Routine tests”.
c. In case of Class I controls, check earthing continuity on the appliance after fitting
NEO / NEO WIFI to the electric towel rail according to the instructions in Appendix A
of EN60335-1: “Routine tests”.
5.5.2 IF NEO / NEO WIFI INCL. HEAT. ELEMENT IS NOT CONNECTED TO THE
TOWEL RAIL
DUEL-FUEL
VERIFICATIONS BEFORE INSTALLATION
•Check the package delivery.
•The delivery includes a radiator, a heating element with a
protected Nexus connector and a NEO / NEO WIFI controller.
•The heating element is pre-prepared in the radiator bus, it is
not properly installed.
•Carefully unscrew it and prepare it for proper installation.
•Switch off the mains.
•Do not connect NEO / NEO WIFI to the power supply until the
installation into a properly filled towel rail is completed.
•Make sure that the towel rail can have the NEO / NEO WIFI on the bottom side (Figure
5).
•If the heating element or the controller is damaged, do not continue with the
installation, please contact the seller.

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INSTALLING THE HEATING ELEMENT IN THE TOWEL RAIL
a. Unscrew the heating element from the towel rail with a light rotary movement.
Remove the Nexus connector cover.
b. Insert the supplied NEO / NEO WIFI O-ring gasket from the bottom over the heating
element in the reserved space.
In order to minimize the risk for leakage it is recommended to use a PTFE tape or
similar product to prevent leakage.
c. Insert the tip of the heating element into the bottom hole of the towel rail and make
sure to select the female ½” GAS thread.).
d. Insert the heating element all the way in the upside down radiator and screw in the
heating element using a 25 mm wrench (not included).
In case of ‘Dual fuel’ installation, a T-piece of 40 mm maximum length (male thread
excluded) is sometimes required.
Insert the T-piece in the heating element, screw and tighten it firmly. Do not use tools.
WHEN THE HEATING ELEMENT IS CONNECTED TO THE TOWEL RAIL, GO TO 5.5.1
5.6 Cleaning
To clean NEO / NEO WIFI, use only a dry and clean soft cloth.
Make small locally round movements.
Apply a light pressure especially to the chrome plastic surfaces to avoid potential scratches.
Do not clean NEO / NEO WIFI with aggressive products.
Do not wet NEO / NEO WIFI in an attempt to clean it. Do not immerse in water.
When cleaning NEO / NEO WIFI, it must be disconnected from the power supply.
Ventil 3 bar

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5.7 Uninstalling NEO / NEO WIFI
ALL ELECTRICAL WORK SHOULD BE CARRIED OUT BY A QUALIFIED ELECTRICIAN.
Do not touch the metallic parts of NEO / NEO WIFI if it is powered; before maintenance
and de-installation operation wait the necessary time to ensure it is cold after it is switched
off.
During installation, de-installation and maintenance, ensure working place safety until the
operation is completed.
5.8 Notes for disposal of NEO / NEO WIFI valid for the European Union
The crossed-out wheeled-bin symbol on the towel rail to which NEO / NEO WIFI
is installed, reminds you that in the European Union all electrical and electronic
products and batteries must be taken to separate collection at the end of their
working life. Do not dispose of these products as unsorted municipal waste.
Return the products to collection to prevent possible harm to the environment or
human health from uncontrolled waste disposal and to promote the sustainable reuse of
material resources. Collection information is available from the product retailer, local waste
authorities or national producer responsibility organizations. For more information, see
product country-specific information.
6 USE AND FUNCTIONING
All uses different from the ones described in this section are to be intended as improper
usage. In case of doubts refer to the seller.
•The electrical towel rail with regulator is intended only for heating rooms in the
home. Any other use is forbidden
•NEO / NEO WIFI is intended to be used and installed into a towel rail. Any other
use is strictly forbidden and potentially dangerous.
•do not switch on NEO / NEO WIFI unless the heating element is properly immersed
in the liquid inside the towel rail.
•NEO / NEO WIFI is intended to work only if the electric heating element - connected
to NEO / NEO WIFI and fitted into the towel rail - is completely immersed in the
liquid (water) inside the towel rail.
•NEO / NEO WIFI is designed for use with water or water+glycol filled towel rails.
•Do not use NEO / NEO WIFI before it has been completely and correctly installed. If
NEO / NEO WIFI is not firmly fixed to the towel rail, disconnect the mains turning off
the circuit breaker switch and contact the manufacturer in order to avoid hazard.
•Do not cut the power supply cable to stop regulation or to switch NEO / NEO WIFI
OFF.

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•Once connected to the heating element, NEO / NEO WIFI regulating box MUST
NOT be disconnected from the heating element.
•Do not cover NEO / NEO WIFI, even partially, even temporarily.
7 CONTROLLER FUNCTIONS
7.1 NEO / NEO WIFI buttons maps
Short press
Long press

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7.2 First start
First start Set Hour, Minute and Day.

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7.3 Standard functions ON-OFF
Display backlight Tap any button one time to turn on the display from the
stand-by mode (display off). Display will light on.
Backlight for the display: off after 5 second and on when a button is touched.
ON Backlight on:
Tap ON-OFF button to switch on the controller.
Backlight off:
Tap any button to switch on the backlight then tap ON-OFF
button to switch on the controller.
OFF Backlight on:
Tap ON-OFF button to switch off the controller.
Backlight off:
Tap any button to switch on the backlight then tap ON-OFF
button to switch off the controller.