harmoni 50 Installation Manual
installation guide
Installation guide
Electronic intelligent timer thermostat
www.harmonithermostat.co.uk
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installation guide
Contents
Page
1 Introduction ....................................................... 3
1.1 Technical specifications ................................ 4
1.2 Safety Instructions ........................................ 7
2 Mounting Instructions ...................................... 8
3 Settings ............................................................. 12
3.1 Initial settings ............................................... 12
3.2 Forecast ....................................................... 16
3.3 Window open ............................................... 18
3.4 Maximum floor temperature .......................... 19
3.5 Enable/Disable timer ..................................... 23
4 Symbols ............................................................. 24
5 Disposal Information ........................................ 25
6 Warranty ............................................................ 25
More information on this product can be found at:
www.harmonithermostat.co.uk
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harmoni 50
Introduction 1
harmoni 50 is an electronic programmable timer
thermostat used for controlling electrical underfloor
heating elements.
The thermostat is designed for fixed installation only. It
can be used for both direct heating of the entire room
and for comfort heating of the floor.
Listed below are some of the thermostat’s main features:
h A touchscreen display with backlight.
h Easy-to-follow menu-driven programming and
operation.
h An installation wizard with room/floor type specific
set-up.
h Support for multiple frame systems.
h Compatible with numerous 3rd party NTC sensors.
h Settings can be copied from one thermostat to
another/others using a single generated code.
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installation guide
Technical Specifications 1.1
Operation voltage 220–240 V~
Standby power consumption Max. 0.40 W
Relay:
Resistance load
Inductive load
Max. 16 A / 3680 W @ 230 V
cos φ = 0.3 Max. 1 A
Sensing units NTC 6.8 kOhm at 25°C
NTC 10 kOhm at 25°C
NTC 12 kOhm at 25°C
NTC 15 kOhm at 25°C (default)
NTC 33 kOhm at 25°C
NTC 47 kOhm at 25°C
Sensing values: (default NTC
15 K)
0°C
20°C
50°C
42 kOhm
18 kOhm
6 kOhm
Control PWM (Pulse Wide Modulation)
Ambient temperature 0° to +30°C
Frost protection temperature 5°C to +9°C (default 5°C)
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harmoni 50
Temperature range Room temperature 5–35°C.
Floor temperature 5–45°C.
Max. floor: 20–35°C (if
unrecoverable seal is broken
then up to 45°C).
Min. floor: 10–35°C, only with
combination of room and floor
sensor.
Sensor failure monitoring The thermostat has a built-in
monitoring circuit, which will
switch off the heating if the
sensor is disconnected or short-
circuited.
Cable specification max. 1×4mm² or 2×2.5mm²
Ball pressure test temperature 75°C
Pollution degree 2 (domestic use)
Controller type 1C
Software class A
Storage temperature −20°C to +65°C
IP class 21
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installation guide
Protection class
Class II –
Dimensions 85×85×20–24mm (in-wall
depth: 22mm)
Weight 103g
Technical Specifications 1.1
Electrical safety and electro-magnetic compatibility
for this product is covered by the compliance with the
EN/IEC Standard, Automatic electrical controls for
household and similar use:
h EN/IEC 60730-1 (general)
h EN/IEC 60730-2-9 (thermostat)
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harmoni 50
Safety Instructions 1.2
Make sure the mains supply to the thermostat is turned
off before installation.
Important: When the thermostat is used to control
a floor heating element in connection with a wooden
floor or similar material, always use a floor sensor and
never set the maximum floor temperature to more
than 35°C.
Please also note the following:
h The installation of the thermostat must be done by an
authorised and qualified installer according to local
regulations.
h The thermostat must be connected to a power supply
via an all-pole disconnection switch.
h Always connect the thermostat to continuous power
supply.
h Do not expose the thermostat to moisture, water, dust
and excessive heat.
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installation guide
Mounting Instructions 2
Please observe the placement guidelines below.
Place the thermostat at a suitable height on
the wall (typically 80–170cm from the floor).
The thermostat should not be placed in wet
rooms, place it in an adjacent room instead.
When installing the thermostat outside the
room it should be in ‘floor sensor only’ mode.
Always place the thermostat according to
local regulations on IP classes.
Do not place the thermostat on the inner side
of an exterior wall.
Always install the thermostat at least 50cm
from windows and doors.
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harmoni 50
Do not place the thermostat in a place that is
exposed to direct sunlight.
Important: A floor sensor enables a
more accurate temperature control and
is recommended in all floor heating
applications and is compulsory under
wooden floors to reduce the risk of
overheating the floor.
h Place the floor sensor in a conduit in an appropriate
place where it is not exposed to sunlight or draft from
door openings.
h Equally distant and >2cm from two heating cables.
h The conduit should be flush with the floor surface;
countersink the conduit if necessary.
h Route the conduit to the connection box.
h The bending radius of the conduit must be a minimum
of 50mm.
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