Riello Hi, Comfort 100 Operation and installation manual

cod. Doc-0213477_EN rev.1
04/22
SET
PROG
RESET
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MODE
Hi, Comfort 100
EN INSTALLER AND USER MANUAL

2
Dear Customer,
Thank you for choosing the
Hi, Comfort T100 control. This control device for heating
(and cooling) systems and boilers is easily installed and, if used correctly, offers bet-
ter quality comfort as well as energy savings.
This thermostat has been designed to support a maximum of 2 A at 30 VDC or 0.25
A at 230 VAC (specications for internal relay to switch the boiler “room thermostat”
connection).
9 If the device is installed by a third party, please ensure that this manual is given
to the end user.
9 These instructions must be kept by the user.
COMPLIANCE
The Hi, Comfort T100 remote control panel complies with:
−Electromagnetic Compatibility Directive 2014/30/EU
−Low Voltage Directive 2014/35/EU
The following symbols are used in some parts of the manual:
9 CAUTION= for tasks which require particular care and suitable prepa-
ration.
0 FORBIDDEN = for tasks which MUST NOT be performed .
RIELLO GROUP
Via Ing Pilade Riello,
7-37045 Legnago (VR),
Italy
At the end of its life, the product should be not be disposed of as solid
urban waste, but rather it should be handed over to a differentiated
waste collection centre.

3
SUMMARY
1 GENERAL INFORMATION ......................................... 4
1.1 General notices.........................................................4
1.2 What is the Hi, Comfort T100 for? .................................5
1.3 Modes of use............................................................5
1.4 Glossary of technical terms ........................................5
1.5 Hi, Comfort T100 control Class Declaration,
according to the ErP Directive ..................................... 7
2 INSTALLATION.......................................................9
2.1 Contents of the package ............................................9
2.2 Practical installation diagrams...................................13
2.3 Technical Data ....................................................... 33
2.4 Dimensions ............................................................ 35
2.5 Three-phase installation..........................................36
3 COMMISSIONING................................................. 44
3.1 User interface .........................................................44
3.2 Display................................................................... 45
3.3 Setting the date and time ........................................46
3.4 Setting the heating/cooling mode............................. 47
3.5 Setting the operating mode .....................................48
3.6 Setting the extra functions .......................................50
3.7 Setting the heating/cooling time program in
automatic operating mode ...................................... 52
3.8 Setting the DHW time program.................................. 54
3.9 Setting the heating/cooling room setpoint
temperature...........................................................56
3.10 Setting the DHW setpoint temperature ......................58
3.11 Displaying operating information .............................59
3.12 Technical menu – Advanced programming ................ 63
3.13 RF receiver conguration ......................................... 73
3.14 Linking function...................................................... 73
3.15 Resetting the WiFi Box ............................................. 76
4 ALARMS AND OPERATING STATUSES .........................77
4.1 LED notication lights for the WiFi Box and
boiler RF receiver **..................................................77
4.2 Boiler and Hi, Comfort T100 alarms ............................ 78

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1 GENERAL INFORMATION
1.1 General notices
Please read this manual before install-
ing and using the device.
9 Risk of electric shock. This device
should be installed by a qualied
professional and in line with the
standards in force for electrical in-
stallations. Always disconnect the
power supply before installing.
9 Note to the installer:
−Most of the product parame-
ters are factory set. If the de-
vice is activated without a WiFi
connection, the date and time
should be set on the thermostat
as a minimum (this information
is wiped every time the batteries
are removed and if not updated
via the web). All other settings
– such as linking the receiver
and the transmitter (for the WiFi
Box), usage mode and tempera-
tures – are pre-congured.
9 These instructions must be read
together with the sections of the
boiler manual regarding the room
thermostat/boiler remote control.
It is recommended that the device
be installed by qualied techni-
cians.
9 The Hi, Comfort T100 should be
installed in the most accessible
room for you as regards controlling
the room temperature (usually the
living room).
9 As per the standards, the
Hi, Comfort T100 should be po-
sitioned 1.5 m from the oor to
make sure that you can easily read
the display.
9 The Hi, Comfort T100 is powered
by 2 x AA batteries.
9 The Hi, Comfort T100 must be
kept away from sources of heat
or air currents as these may affect
the accuracy of the readings from
the incorporated room sensor.
9 Do not open the Hi, Comfort T100
for any reason, unless to replace
the batteries; it does not require
any maintenance to operate.
9 Do not press on the liquid crystal
display glass as this may damage
the glass and cause problems
with reading the display.
9 To clean the display, use a dry
cloth only. Any seepage would
damage the liquid crystal display.
9 With the WiFi Box connected in ON/
OFF mode to the boiler or another
appliance via cable, should all of
the thermostats be faulty or the
batteries be at, the Box switch-
es OFF (after 12 minutes) if it was
ON, or it remains OFF (no heating/
cooling heat request). From the
app, you can manually force the
WiFi Box relay on or off.
9 With the WiFi Box connected in
OTBus mode to the boiler via ca-
ble, should all the thermostats
be faulty or the batteries at, the
Box will remain in the last oper-
ating mode. The boiler (in heating
mode) can be forced on and off
manually using the APP.
9 With the Hi, Comfort T100 con-
nected (ON/OFF) to the boiler or
another device via cable, should
all the thermostats be faulty or
the batteries at, the thermostat
relay will remain in the last oper-
ating mode.
9 Should the power supply to the
WiFi Box connected in ON/OFF
mode fail, the Box remains in the

5
last operating state. It does not
maintain the OFF state.
9 With the WiFi Box connected in OT-
Bus mode to the boiler via cable,
should there be a power outage,
the WiFi box remains in the last
operating mode.
1.2 What is the
Hi, Comfort T100 for?
The Hi, Comfort T100 allows you to
check the temperature in your house
and the operation of your boiler with-
out you needing to access it. For rea-
sons of space optimisation, your boiler
may be located outside (for example,
on a terrace or balcony or in an outdoor
space); the
Hi, Comfort T100 , on the
other hand, is usually installed in the
largest room in the house, where it can
be easily checked and adjusted.
Where installed in systems with a
boiler which is not equipped with
the specic communication bus, the
Hi, Comfort T100 only allows you to
check the temperature in your house
and does not allow you to control
the boiler remotely (domestic hot
water temperature and boiler set-
tings/alarms cannot be managed).
For both types of installation, the
Hi, Comfort T100 system allows you
to check the temperature in differ-
ent zones in your house, where there
are zone valves and each one of these
is connected to a single additional
Hi, Comfort T100 (multi-zone manage-
ment).
If the Hi, Comfort T100 is installed
together with the WiFi Box and you
have a WiFi internet connection in
your home, the Hi, Comfort T100
system allows you to carry out the
same functions available via the
Hi, Comfort T100 itself remotely on
a smartphone.
1.3 Modes of use
The Hi, Comfort T100 means you can
manage your domestic heating in a
more sophisticated way; you can de-
cide how and when the boiler will
come on to heat your living spaces.
In addition, it allows you to set the
domestic hot water temperature,
without having to access the boiler
panel (where connected to the boiler
via OTBus or a specic communica-
tion bus). The purpose of this man-
ual is to explain each of these ways
of using the device and the related
functions.
1.4 Glossary of technical terms
Heating water : the water in the radia-
tors that has been heated by the boiler.
Domestic hot water: the water heated
by the boiler which is dispensed from
the domestic taps.
Fault code: this code shows on
the display to ag any boiler or
Hi, Comfort T100 faults.
Original set-up: this is the control
panel conguration after turning on the
device for the rst time or after a reset.
Display: this is the liquid crystal panel
where each of the symbols correspond-
ing to the various functions are shown.
Anti-freeze function: this function en-
sures that any drops in temperature do
not cause the water inside the pipes to
freeze and cause damage to the heating
system. This function is activated when
the room temperature drops below 5°C
(
this value can be changed by the
qualied technical service
).
NOTE
This function is active only if the boiler
is in the correct operating condition (i.e.
powered and not blocked).
Restore factory settings : this restores

6
the control panel to its original set-up, resetting any user programming excluding
the system clock.
Summer: the heating system is not active in this mode (for example, during the
summer).
The boiler can dispense domestic hot water. If correctly connected and congured
(in cooling mode), the
Hi, Comfort T100 can be used to manage a cooling system in
the summer, turning the relay on in ON/OFF mode, in the opposite way to the winter
operating mode. The relay keeps the user request connected (e.g. a zone valve) until
the room temperature falls below a certain level.
The cooling mode requires a specic system and generator for this purpose.
Winter: the Hi, Comfort T100 dispenses domestic hot water and hot water for heat-
ing in this mode.
T1 anti-freeze temperature : this is the temperature used when the rooms are not
lived in.
T2 economy temperature : this is the temperature used when the rooms are not
lived in during the day, at night or when you are on holiday.
T3 comfort temperature : this is the temperature at which you obtain ideal room
heating during the day.
Room temperature : this is the temperature in the room where the Hi, Comfort T100
is installed (see "NOTE 1" to page 7).
Room setpoint temperature: this is the desired room temperature.
External temperature : this is the temperature outside, read using an ex-
ternal probe connected to the boiler or read in another way (see "NOTE 2"
to page 7).
Heating curve : this is the relationship between the external temperature and the
heating ow temperature. Where external temperature data are available (via an
external probe or other method), the heating ow temperature is automatically ad-
justed as the external temperature varies in order to maintain a constant tempera-
ture in the room. The heating curve must be set by the installer on the basis of the
geographical location and type of system.
Connection via OTBus communication bus: this is a communication mode be-
tween the
Hi, Comfort T100 and the boiler, where a series of information is ex-
changed between the two electronic systems. This
proprietary connection can be
used as opposed to the simple ON/OFF (open/closed contact) and is set by the boiler
manufacturer specically for the
Hi, Comfort T100 .
Check the compatibility of your boiler with the OTBus connection rst.
ON/OFF connection (boiler room thermostat) : this is the simple communication
method between the
Hi, Comfort T100 and the boiler (or any other unit capable of
receiving this command), where the relay on the
Hi, Comfort T100 (or on the WiFi
Box/receiver) sends an on/off request via the room thermostat (TA) contact on the

7
boiler. The ON/OFF connection is also used when a request is made to another sys-
tem component such as a zone valve or similar.
The
Hi, Comfort T100 ON/OFF contact always maintains the same technical char-
acteristics (
Hi, Comfort T100 relay, WiFi Box relay, boiler RF receiver relay) wherever
it is positioned and these must be respected when connecting the relay and the
components it controls via cable.
NOTE: Never exceed the maximum electrical loads.
NOTE 1
The display range for the room temperature is between -7°C and +50°C.
NOTE 2
The display range for the external temperature is between -40°C and +60°C.
Temperatures outside of these ranges are shown as three dashes “- - -”.
1.5 Hi, Comfort T100 control Class Declaration, according to the
ErP Directive
With reference to Delegated Regulation (EU) No. 811/2013, the data in the table can
be used to complete the product data sheets and energy labelling of space heaters,
combination heaters, packages of space heater, temperature control devices and
solar devices.
Manufacturer/Brand Model
RIELLO SpA /
Hi, Comfort T100 Hi, Comfort T100
Possible Hi, Comfort T100 congurations, the relative conguration classes and the
energy contribution to the system.
Boiler
characteristics
Hi, Comfort T100 conguration
Class and
contribu-
tion
Boiler with xed
delivery tem-
perature (ON/OFF
control)
Hi, Comfort T100 ON/OFF connection I = 1%
Boiler with variable
delivery temper-
ature (controlled
bycommunication
bus)
Connection via communication bus to the
Hi, Comfort T100 . Delivery temperature to
the boiler calculated on the basis of one
room temperature only
V = 3%
Boiler with variable
delivery temper-
ature (controlled
by communication
bus)
Connection via communication bus to the
Hi, Comfort T100 . Delivery temperature
to the boiler calculated on the basis of
the room temperature and the external
temperature (given by the external probe
or via the web).
VI = 4%

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Boiler
characteristics
Hi, Comfort T100 conguration
Class and
contribu-
tion
Boiler with variable
delivery temper-
ature (controlled
bycommunication
bus)
Connection via communication bus to
the Hi, Comfort T100. Delivery tempera-
ture to the boiler calculated on the basis
of at least 3 distinct room temperatures.
At least 3 Hi, Comfort T100s (sensors)
connected to at least 3 zone valves (ac-
tuators) are required.
VIII = 5%
Denition of classes
Class I – On/off room thermostat: a room thermostat that controls the on/off op-
eration of a heater. Performance parameters, including switching differential and
room temperature control accuracy are determined by the thermostat's mechanical
construction.
Class V – Modulating room thermostat, for use with modulating heaters: an elec-
tronic room thermostat that varies the ow temperature of the water leaving the
heater dependent upon measured room temperature deviation from room thermo-
stat set point. Control is achieved by modulating the output of the heater.
Class VI – Weather compensator and room sensor, for use with modulating heaters:
a heater ow temperature control that varies the ow temperature of water leaving
the heater dependent upon prevailing outside temperature and selected weather
compensation curve. A room temperature sensor monitors room temperature and
adjusts the compensation curve parallel displacement to improve room comfort.
Control is achieved by modulating the output of the heater.
Class VIII – Multi-sensor room temperature control, for use with modulating heaters:
an electronic control, equipped with 3 or more room sensors, that varies the ow
temperature of the water leaving the heater dependent upon the aggregated meas-
ured room temperature deviation from room sensor set points. Control is achieved
by modulating the output of the heater.

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2 INSTALLATION
2.1 Contents of the package
The WiFi Hi, Comfort T100 package contains the following components:
Qty Component Description
1
Hi, Comfort T100 = boiler remote control with room
programmable thermostat function (*) or room pro-
grammable thermostat (**).
(*) where there is an active OTBus connection in one of the
following congurations: between the WiFi Box and the
boiler, between the RF receiver (optional) and the boiler,
between the Hi, Comfort T100 and the boiler,
(**) where the TA connection between the WiFi Box and the
boiler is active
1
WPS/Smartlink Outputs Boiler
WiFi Box = device for communicating with the
Hi, Comfort T100 programmable thermostat. It can
operate with the boiler RF receiver (optional) via radio
frequency, with the boiler itself via cable (provided
as standard) and with your home router via a WiFi
connection. Magnetic back so that it can be attached
to the boiler’s metal casing.
1USB power adapter
1
USB cable A – USB Mini B = WiFi Box power cable
1USB cable A = cable connecting the WiFi Box and the
boiler
21.5V AA batteries
1Installer/User Manual

10
Qty Component Description
2Screws with plugs
1
OTBus connector (only for boilers without one) for
an OTBus connection between the WiFi Box and
the boiler or the boiler RF receivers (optional) and
the boiler or the
Hi, Comfort T100 and the boiler.
It can also be used to connect the external probe
(optional).
9 If installing additional Hi, Comfort T100 s or boiler RF receivers, you must follow
the procedure to link them to the WiFi Box (see "3.14 Linking function" to page
73).
The
Hi, Comfort T100 package contains the following components:
Qty Component Description
1
Hi, Comfort T100 = boiler remote control with room
programmable thermostat function (*) or room pro-
grammable thermostat (**).
(*) where there is an active OTBus connection in one of the
following congurations: between the WiFi Box (optional)
and the boiler, between the RF receiver (optional) and the
boiler, and between the Hi, Comfort T100 and the boiler,
(**) where the TA connection between the WiFi Box (optional)
and the boiler is active
21.5V AA batteries
1Installer/User Manual
2Screws with plugs

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9 If installing additional Hi, Comfort T100 s or boiler RF receivers, you must follow
the procedure to link them to the WiFi Box (see "3.14 Linking function" to page
73).
The WiFi Box kit contains the following components:
Qty Component Description
1
WPS/Smartlink Outputs Boiler
WIFI Box
1USB power adapter
1
USB cable A – USB Mini B = WiFi Box power cable
1USB cable A = cable connecting the WiFi Box and the
boiler
1Installer/User Manual
9 If installing additional Hi, Comfort T100 or boiler RF receivers, you must follow
the procedure to link them to the WiFi Box (see "3.14 Linking function" to page
73).

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The Boiler RF receiver kit contains the following components:
Boiler RF receiver
Qty Component Description
1Boiler RF receiver
9 If installing additional Hi, Comfort T100 or boiler RF receivers, you must follow
the procedure to link them to the WiFi Box (see "3.14 Linking function" to page
73).
In this manual, the descriptions related to "Kit (Thermostat + Wi-Fi Box)", "Wi-Fi
Box", "RF Receiver" are related to the models below
Description Model
Kit (Thermostat + Wi-Fi Box) Hi, Comfort T100 Wi-Fi;
Wi-Fi Box Hi, Comfort G100-W
RF Receiver Hi, Comfort G100-R.

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2.2 Practical installation diagrams
Key
RF
Radio frequency communi-
cation (868 MHz)
WiFi
WiFi communication (2.4
GHz)
WiFi modem/router
Internet connection
Smartphone/Tablet (An-
droid/IOS)
Key
LLine
NNeutral
TA
Room thermostat connec-
tion, dry contact ON/OFF
(max 0.25 A @ 230 V)
OT
OTBus protocol connection,
contact for proprietary
communication protocol
Zone valve without limit
switch
Zone valve with limit switch
2.2.1 Diagram 1
ON/OFF programmable thermostat for heating (TA).
Single heating zone in ON/OFF mode.
SET
PROG
RESET
ESC
MODE
TA
TA
Hi, Comfort T100

14
2.2.2 Diagram 2
ON/OFF programmable thermostat for heating (TA).
Multi-zone heating in ON/OFF mode.
9 Up to 8 areas if WiFi Box is available.
Up to 7 areas with boiler RF receiver connected to the boiler.
For information on wireless management of the zone valves, please see "Di-
agram 16" - "Diagram 17"
SET
PROG
RESET
ESC
MODE
SET
PROG
RESET
ESC
MODE
SET
PROG
RESET
ESC
MODE
z. 1 z. ... z. ...
TA
TA
TA
L
N
TA
Hi, Comfort T100 Hi, Comfort T100 Hi, Comfort T100
2.2.3 Diagram 3
Modulating programmable thermostat/remote control.
Single heating zone in modulating thermoregulation mode.
OT: full control of boiler, heating, DHW, alarms and settings.
OT
SET
PROG
RESET
ESC
MODE
OT
Hi, Comfort T100

15
2.2.4 Diagram 4
Modulating programmable thermostat/remote control and ON/OFF programmable
thermostat for heating (TA).
Single zone in modulating thermoregulation mode.
OT: full control of boiler, heating, DHW, alarms and settings.
Multi-zone heating in ON/OFF mode.
TA
OT
SET
PROG
RESET
ESC
MODE
SET
PROG
RESET
ESC
MODE
SET
PROG
RESET
ESC
MODE
z. 1 z. ... z. ...
TA
TA
TA
L
N
Hi, Comfort T100
Hi, Comfort T100 Hi, Comfort T100
9 Set the boiler to “zone valve” mode. For the procedure, contact
the Technical Assistance Center.
9 Up to 8 areas if WiFi Box is available.
Up to 7 areas with boiler RF receiver connected to the boiler.
For information on wireless management of the zone valves, please see "Di-
agram 16" - "Diagram 17"

16
2.2.5 Diagram 5
ON/OFF programmable thermostat for heating (TA).
Single heating zone in ON/OFF mode.
Wireless installation.
9 Only one Hi, Comfort T100 can be connected to the boiler RF receiver.
230 V
SET
PROG
RESET
ESC
MODE
RF
TA
Hi, Comfort T100
Boiler RF
receiver
2.2.6 Diagram 6
Modulating programmable thermostat/remote control.
Single heating zone in modulating thermoregulation mode.
OT: full control of boiler, heating, DHW, alarms and settings.
Wireless installation.
9 Only one Hi, Comfort T100 can be connected to the boiler RF receiver.
SET
PROG
RESET
ESC
MODE
RF
230 V
OT
Hi, Comfort T100
Boiler RF
receiver

17
2.2.7 Diagram 7
ON/OFF programmable thermostat for heating (TA) with remote control via WiFi.
Single heating zone in ON/OFF mode.
SET
PROG
RESET
ESC
MODE
WiFi Box
RF
server
internet
WiFi WiFi
230 V
TA
TA
Hi, Comfort T100

18
2.2.8 Diagram 8
Modulating programmable thermostat/remote control with remote control via
WiFi.
Single heating zone in modulating thermoregulation mode.
OT: full control of boiler, heating, DHW, alarms and settings.
OT
SET
PROG
RESET
ESC
MODE
WiFi Box
RF
server
internet
WiFi WiFi
230 V
OT
Hi, Comfort T100
CANNOT BE DONE

19
2.2.9 Diagram 9
ON/OFF programmable thermostat for heating (TA) with remote control via WiFi.
Wireless installation.
TA
SET
PROG
RESET
ESC
MODE
WiFi Box
server
internet
WiFi WiFi
RF
RF
230 V
Hi, Comfort T100
2.2.10 Diagram 10
Modulating programmable thermostat/remote control, , with remote control via
WiFi.
Single heating zone in modulating thermoregulation mode.
OT: full control of boiler, heating, DHW, alarms and settings.
Wireless installation.
OT
SET
PROG
RESET
ESC
MODE
WiFi Box
server
internet
WiFi WiFi
RF
RF
230 V
Hi, Comfort T100

20
2.2.11 Diagram 11
ON/OFF programmable thermostat for heating (TA) with remote control via WiFi.
Single heating zone in ON/OFF mode.
With boiler RF receiver to be inserted if the WiFi signal at the boiler is weak or
lacking.
Wireless installation.
9 To extend the WiFi signal it is possible to use the WiFi EXTENDER accessory in
alternative to the Boiler RF Receiver
WiFi Box
RF
server
internet
WiFi WiFi
230 V
230 V
SET
PROG
RESET
ESC
MODE
RF
TA
Hi, Comfort T100
Boiler RF
receiver