Thermogroup 5220 Operation manual

Programmable thermostat for electric underfloor heating
Thermotouch Glass
UK: 5220 / 5226
AU: 5220A / 5226A
UNDERFLOOR HEATING CONTROLS
Installation & User Guide
January 2018

2
Contents
Compatibility ............................................................... 3
What’s in the box? ....................................................... 4
Before you start ........................................................... 5
Installing your thermostat .............................................. 6
Wiring diagram ............................................................ 10
User interface .............................................................. 16
Set the time and date ................................................... 17
Heating modes ............................................................ 18
Heating schedule ......................................................... 20
Settings ...................................................................... 22
Technical data ............................................................. 24
Factory reset & key lock ................................................ 26
Energy saving features .................................................. 27

3
Compatibility
Thermotouch is compatible with Thermogroup NTC
10K floor sensor probes.
NTC 10kΩ@ 25°C
If you have an existing floor probe from another
thermostat that is not compatible, set your
thermostat to ambient temperature sensing mode.
(Not advisable for timber or other temperature sensitive floors).
Replacing an existing thermostat?
Contact the manufacturer’s technical department
and ask for the rating of the floor sensor at 25°C.

4
What’s in the box?
Check you’ve got everything:
• Programmable thermostat
• Floor sensor probe (3m)
• Floor sensor conduit (2m)
• Fixing screws
• Installation guide
• Portrait mounting plate (AU only)
You will also need:
• Electrical screwdriver
• Deep electrical back box (UK only)
• Electrical test meter

5
Before you start
Your thermostat should be:
• Installed 1.2 - 1.5m from the floor
• On an internal wall
• Outside any wet zones (IP30)
• Installed on an RCD protected circuit
• Away from drafts or heat influences
• Installed so that the floor sensor probe can be laid in a
heated area of the floor
• Installed by a professional, in line with current electrical
regulations and relevant local standards

6
Installing your thermostat
1. Switch off mains power
You will be installing your thermostat as
part of a high voltage mains electrical
circuit. To ensure your safety and to protect
the thermostat, switch off the mains power
and remove fuse from the spur before you
start the installation.
Fuse Box Fused Switch
CAUTION
High Voltage
Cables
!
OFF
ON ON ON ON ON
OFF

7
Installing your thermostat
2. Installation location
At this stage it its likely that an RCD protected electric
underfloor heating system has been installed and a back box
is already in place.
The underfloor heating cold tail should be pulled up through
the back box, and the sensor probe installed (in the conduit
provided) within the wall cavity or pre chased channel in a
solid wall.

8
3. Maximum distances
Your thermostat can be installed up to 50m away from the
underfloor heating system it is controlling, provided that the
floor sensor is used to control the temperature.
Underfloor heating cold tails and floor sensor probes can be
extended up to 50m.
Connect multiple heaters in parallel.
50m max.
Installing your thermostat

9
Installing your thermostat
4. Release mounting plate (UK)
Use a flat screwdriver to press in the catch (1) and push the black
plate down (2) to release the clips holding the thermostat together.
Separate the 2 sections (3) and disconnect the ribbon cable.
3600W/16A 230V/AC
2
1
3
Do not try to force the fascia off
without first pushing the black plate
down to release the clips!

10
Installing your thermostat
230/240V AC Supply Live
230/240V AC Supply Neutral
UFH Neutral (Load N)
UFH Live (Load L)
Earth (Ground)
Sensor connections
(No polarity)
5. Wiring diagram
Connect the Thermostat to the underfloor
heating (UFH) cold tail, power supply and floor
temperature sensor.
The floor temperature sensor is not polarity sensitive.
7654321

11
Installing your thermostat
6. Fix mounting plate in position (UK)
Use a screwdriver to fix the mounting plate to the back box in
the wall. Now you can connect the white ribbon cable to the
fascia.

12
Installing your thermostat
7. Fix thermostat fascia in place (UK)
Locate the thermostat onto the mounting plate and
push down to clip in place.

13
Installing your thermostat
8. Fix mounting plate (AU)
If you are installing the AU version the wiring diagram is
the same, but the fixing plate works differently. Release the
mounting plate from the case and use a screwdriver to fix
the mounting plate to the wall. Pull UFH cold tail, mains and
sensor cables through and connect cables as shown on p10.
(Optional landscape mounting plate 5221/5223)

14
Installing your thermostat
9. Fix thermostat in place (AU)
Clip the plastic mounting plate over the steel plate and locate
the thermostat onto the steel clips. Push down to secure the
thermostat in place.
(Optional landscape mounting plate 5221/5223)

15
10. Switching on your system
It is important that all adhesives and
grouting is dry and fully cured before you
switch on your underfloor heating.
Most adhesives take between 7 to 10 days
to cure. Follow manufacturer guidelines.
The temperature of your underfloor heating
should be increased gradually to avoid
thermal shock in the floor. Start at 15°C and
work up to your desired temperature 2-3°C
per day.
Observe any maximum temperature
guidelines from your floor manufacturer.
Wait for
7 - 10 Days
before you
switch on
!
Installing your thermostat

16
User interface
1
2
311
12
13
10
4
5
7 86 9
1. Day indicators
2. Time
3. Measured temperature
4. Heating on icon
5. Lock icon
6. Mode button
7. Up arrow
8. Down arrow
9. Power button
10.Event icons
11.Set temperature
12.Manual mode icon
13.Schedule mode icon

17
Setting the date and time
Setting the day and time
Switch the unit off by pressing .
Press and hold for 7 seconds until the time
begins to flash.
Use and to select the correct minute.
Press to switch to hours and use and to
select the correct hour.
Press again to edit the day and use and to
select the correct day. 1 = Monday & 7 = Sunday.
Press to save your settings.
NOTE: The thermostat will switch off after 30 seconds of
inactivity and any unsaved settings may be lost

18
Heating modes
When your thermostat is on you can tap to switch
between Manual and Schedule heating modes.
Manual mode
Your thermostat will simply maintain the temperature you set manually
until you ask it to do something else!
Schedule mode
Your thermostat will follow a heating schedule that you can set by
following the instructions on page 20.
Manual override
If you change the set temperature while the thermostat is running the
heating schedule, the new selected temperature will be maintained
until the next scheduled temperature change. The thermostat will then
revert to the preset heating schedule.

19
Heating modes
1234567 (Flashing) 7 individual days. Every day can be programmed to
follow an individual heating schedule.
1234567 Monday to Sunday the same. Every day will follow the same
heating schedule (6 heating events per day).
123456 Monday to Saturday the same and Sunday separate (6 heating
events per day).
12345 Monday to Friday the same with Saturday and Sunday separate
(6 heating events per day).
What is a heating event?
A heating event is an opportunity to change the temperature in your
heating schedule. Most people use 3 on and 3 off.
Heating schedule settings
In the advanced settings (see page 23) you can choose
between 3 different heating schedules.

20
Set up your heating schedule
*Check with your floor finish manufacturer for recommended maximum temperatures
1. Turn the thermostat on by pressing .
1. Press to switch to mode before you start.
2. Press to switch the unit off.
3. Press and hold for 7 seconds to edit your schedule. If
you have already set the clock press x3 to skip it.
4. Use and to adjust the start time for event 1 and
press to save. Now use and to select the desired
Comfort (or “On”) temperature between 20 - 28°C
depending on your floor finish*.
5. Press to advance to event 2 and use and to select
the desired time to switch to a lower temperature.
6. Press to save. Now use and to select the desired
Eco (or “Off”) temperature between 16 - 20°C.
7. Press to advance to event 3 and use and to select
the desired time to switch to a higher temperature.
Event 1
Wake Up
Event 2
Out
Event 3
Home