harmoni 25 Installation Manual

1

installation guide

digital timer thermostat

www.harmonithermostat.co.uk

installation guide

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Contents

Page

1 Introduction .............................................................. 3

2 Button and display description ................................ 4

3 Installing and wiring the thermostat ........................ 5

4 Basic functionality .................................................... 6

4.1

Select how to control your oor heating system

... 6

4.2 Recommended settings ...................................... 7

4.3 Setting the clock ................................................. 8

4.4 Setting the maximum oor temperature .............. 8

4.5 Reading the oor temperature ............................. 8

4.6 Frost protection mode ........................................ 9

5 Timer functionality .................................................... 10

5.1 Activating timer mode ......................................... 10

5.2 Programming the timer ....................................... 10

5.3 Programme your settings .................................... 10

6 Technical specications ........................................... 13

7 Disposal information & notes.................................... 14

8 Warranty ................................................................... 15

harmoni 25

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More information on this product can be found at:
www.harmoni-stat.co.uk

Introduction 1

harmoni 25 is an advanced

digital timer thermostat

used for

controlling electrical underoor heating elements.

The thermostat is designed for xed installation only. It can be
used to control your oor heating system by either the oor
temperature, the room temperature or both together.

Please note

The thermostat must be installed by an authorised
electrician.

In order to obtain the harmoni 2-year warranty, an
authorised electrician/installer must ll in the warranty

details (see page 15).

installation guide

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Current oor
temperature

Current room
temperature

On/Off

Mode

Clock

Up

Down

Heating
element
warming

Frost protection
mode activated

Thermostat on

Day of the
week

Time mode
activated

Button & display description 2

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Installing & wiring the thermostat

3

To mount the thermostat to the wall
box/socket, open the thermostat
by

gently pushing in the two tabs
at the bottom of the casing with a
screwdriver.

To x the thermostat, attach the
cables (see wiring diagram below)
and screw into the wall box/socket.

Once fastened and the cables
connected, reconnect the front
panel to the back.

Wiring diagram

Push in tabs

2

3

1

2

3

1

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Basic functionality 4

Power on/off

Press to turn the thermostat on or off

4.1 Select how to control your oor heating system

This can be controlled by pressing mode :

a) Floor temperature: Mode 2

The heating element turns on/off around a oor temperature
setpoint (the temperature shown in the display is the actual
oor temperature).

b) Room temperature: Modes 1 & 4

The heating element turns on/off around a room temperature
setpoint (the temperature shown in the display is the actual
room temperature).

c) Combined oor & room temperature: Modes 3 & 5

The heating element turns on/off around a room temperature
setpoint with a requested max. oor temperature (Note: oor
temperature is prioritized over room temperature).

Change between the above oor heating modes:

With the thermostat turned off.

Press and for 6 seconds

Select mode 1 to 5 (see table on next page for details)

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After choosing the desired mode do not press any further
buttons and the thermostat will go back to normal standby
mode.

4.2 Recommended settings

harmoni recommends the following settings for different types
of oor constructions:

Program mode Top flooring

Wooden floor* Tiled floor

†

1 (room sensor) If total effect: 0W–1840W



2 (floor sensor) If total effect: 0W–2990W

 

3 (combined room & floor sensor)
If total effect: 1840W–2990W

 

4 (room sensor)
If total effect: 1840W–2990W



5 (combined room & floor sensor)
If total effect: 0W–1840W

 

* Top ooring made of materials such as: parquet, laminate,
massive wood, carpet or linoleum.

†

Top ooring made of materials such as tiles, concrete or

marble.

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Basic functionality 4

4.3 Setting the clock

Press once and the hour will ash.

Use the

(Up/Down key) to select the hours.

Press again until minutes ashes.

Use the

(Up/Down key) to select the minutes.

Press button again until the week day ashes.

Use the

(Up/Down key) to select the day of the week.

After setting the day, do not press any buttons and the
thermostat will go back to normal operating mode.

4.4 Setting the maximum oor temperature

This function is used mainly for wooden oors and is only
available in program modes using the oor sensor (modes 3
and 5)

The temperature setting should be maximum 35°C, which is
also the default set point of the thermostat.

If you choose to control the oor temperature solely by the
oor sensor (mode 2), the max. oor temperature is set for
35°C and cannot be changed.

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Change the oor temperature max. limit (mode 3 & 5)

Make sure the thermostat is turned off.

Hold the

button for 10 seconds until the display shows

Release the button and the display will show SET

Enter the maximum oor temperature (range 20°C–45°C).

4.5 Reading the oor temperature (mode 3 & 5 only)

Make sure thermostat is turned on.

Press

once, the FT will ash, and the display will show

the oor temperature.

In mode 2 (oor sensor) the display always shows the current
oor temperature.

In modes 1 & 4 (room sensor) the display always shows the
current room temperature.

4.6 Frost protection mode

To enable frost protection mode, turn off the thermostat.

Press

for 3 seconds.

Select 01 (00 = disabled).

When frost protection has been enabled the display shows

When enabled and the thermostat is turned off, heating will
activate if the room/oor temperature is lower than 5°C; heating
will stop if the room/oor temperature is higher than 7°C.

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Timer functionality 5

5.1 Activating timer mode

With the thermostat turned on, press the button for 3
seconds. The following settings will be available:

00 = Override (disable timer functionality)

01 = Programmable. And the display will show

.

Leave the thermostat and the display will return to normal.

5.2 Programming the timer (mode 1)

When programming you need to select Programmable
function (01) and the display must show (see above).

You can now set the heating programs. The thermostat must
have four heating periods for weekdays and four heating
periods for the weekend.

Please note: The programming of the whole calendar
week must take place in one continuous process, so it is a
good idea to have the periods written down for reference
when programming the thermostat.

For the weekend you will also need to program two
periods. You can choose one of the periods to be very
short or an extension of the other.

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Example, weekdays:

Period 1 starting at 07.00: Temperature setting 22°C
Period 2 starting at 08.30: Temperature setting 18°C
Period 3 starting at 17.00: Temperature setting 22°C
Period 4 starting at 23.00: Temperature setting 18°C

Example, weekend:

Period 1 starting at 09.00: Temperature setting 22°C
Period 2 starting at 23.00: Temperature setting 18°C
Period 3 starting at 23.01: Temperature setting 22°C
Period 4 starting at 23.02: Temperature setting 18°C

My settings:

Week days:

Period 1 start at ______________ Temp __________°C
Period 2 start at ______________ Temp __________°C
Period 3 start at ______________ Temp __________°C
Period 4 start at ______________ Temp __________°C

Weekend:

Period 1 start at ______________ Temp __________°C
Period 2 start at ______________ Temp __________°C
Period 3 start at ______________ Temp __________°C
Period 4 start at ______________ Temp __________°C

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Timer functionality 5

5.3 Programme your settings

Press the

for 3 seconds until the number “1” and

“Mo Tu We Th Fr” are displayed.

The rst switching time for weekdays can now be programmed.

Use

(Up/Down key) to set the required start time.

Press

to conrm this setting.

Use the

(Up/Down key) to set the required temperature.

Press

to conrm this setting.

Repeat the switching time process for weekdays 2,3 & 4.

After you have programmed times 1–4 for the weekday, you
can set the switching times for the weekends; “Sa Su” will be
displayed.

Use

(Up/Down key) to set the required start time.

Press

to accept this setting.

Use the (Up/Down key) to set the required temperature.

Repeat the switching time process for weekends 2,3 & 4.

To disable the timer, select “Override” (Mode 01).

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Technical specications 6

External sensor NTC 10 kOhm at 25° C
Sensor values:

15°C
18°C
20°C
22°C

14.8 kOhm

13.1 kOhm

12.1 kOhm

11.2 kOhm
Display LCD
Power consumption <2W
Set-point range Room: 5°C to 35°C

Floor: 20°C to 35/45°C
Accuracy ±1°C
Buttons Touch pad
Switch current rating <13A (resistive load)
Mains voltage 85–240V~
Dimensions 86 × 86 × 13mm (W×H×D)
Fixing screw width 60mm
Housing ABS + PC Flame Retardant
Operating rating 0~30°C, 5~95% RH (non-condensing)
SW class A
Ball pressure test 100°C
Pollution degree 2
Weight 253 g

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Disposal information 7

Notes

harmoni 25

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harmoni warranty

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Name .....................................................................................

Address .................................................................................

...............................................................................................

County ......................................... Postcode............................

Address .................................................................................

Phone .....................................................................................

Email .....................................................................................

Please note

In order to obtain the harmoni 2-year warranty, an
authorised electrician/installer must ll in the details below.

Electrician Installation

/Installer ............................................ date ..........................

Thermostat Article

name ................................................ number .....................

Stamp:

16

installation guide

harmoni

Edison House
Edison Close
Ransomes Europark
Ipswich
Suffolk IP3 9GU
United Kingdom

T: 01473 559088
F: 01473 276678
E: [e-mail]

www.harmonithermostat.co.uk

harmoni cannot accept any responsibility for any errors in catalogues, brochures and other printed material. harmoni
reserves the right to alter its products without notice. This also applies to products already on order provided that
such alterations can be made without subsequent changes to specifications already agreed. All trademarks in this
material are the property of harmoni. harmoni and the harmoni logotype are trademarks of Edison House Ltd. All
rights reserved.