Heatmiser TouchScreen Series User manual

1Model: DT-TS / DT-NTS
Model: DT-TS / DT-NTS

Model: DT-TS / DT-NTS
2Model: DT-TS / DT-NTS
TouchScreen Series Model: DT-TS / DT-NTS
Table Of Contents
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3-4
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7-8
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Product Image
Table of Contents
What is a Room Thermostat?
Installation Procedure
LCD Display
Temperature Display
Clean Screen
Locking the Keypad
Temperature Control
12
13
14-15
16
17
18
18
19-22
Frost Protection
Heating ON/OFF
Optional Features Explained
Adjusting the Optional Settings
Optional Settings - Features Table
Re-calibrating the Thermostat
Factory Reset
Wiring Diagrams

43 TouchScreen Series Model: DT-TS / DT-NTS
What is a Room Thermostat?
If your heating system is a boiler with radiators, there will usually be only one room
thermostat to control the whole house. But you can have dierent temperatures
in individual rooms by installing thermostatic radiator valves (TRVs) on individual
radiators.
If you don’t have TRVs, you should choose a temperature that is reasonable for the
whole house. If you do have TRVs, you can choose a slightly higher setting to make
sure that even the coldest room is comfortable, then prevent any overheating in other
rooms by adjusting the TRVs.
Room thermostats need a free ow of air to sense the temperature, so they must not
be covered by curtains or blocked by furniture. Nearby electric res, televisions, wall
or table lamps may also prevent the thermostat from working properly.
A room thermostat simply switches the heating system on and o as necessary.
It works by sensing the air temperature, switching on the heating when the air
temperature falls below the thermostat setting, and switching it o once this set
temperature has been reached.
Setting a room thermostat to a higher temperature will not make the room heat up
any faster. How quickly the room heats up depends on the design & size of the heating
system.
Similarly reducing the temperature setting does not aect how quickly the room cools
down. Setting a room thermostat to a lower temperature will result in the room being
controlled at a lower temperature, and saves energy.
The way to set and use your room thermostat is to nd the lowest temperature settings
that you are comfortable with, and then leave it alone to do its job.
The best way to do this is to set the room thermostat to a low temperature
– say 18°C , and then turn it up by 1°C each day until you are comfortable with the
temperature. You won’t have to adjust the thermostat further. Any adjustment above
this setting will waste energy and cost you more money.

65 TouchScreen Series Model: DT-TS / DT-NTS
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Installation Procedure
This Touchscreen Series thermostat is designed to be ush mounted and requires a
back box of 35mm (minimum depth) to be sunk into the wall prior to installation.
Step 1
Carefully separate the front half of the thermostat from the back plate by placing a
small at head terminal driver into the slots on the bottom face of the thermostat.
Step 2
Place the thermostat front somewhere safe.
Terminate the thermostat as shown in the diagrams on pages 19-22 of this booklet.
Step 3
Screw the thermostat back plate securely into the back box.
Step 4
Clip the front of the thermostat back onto the thermostat back plate.
Do
Mount the thermostat at eye level.
Read the instructions fully so you get the best from our product.
Don’t
Do not install near to a direct heat source as this will aect functionality.
Do not push hard on the LCD screen as this may cause irreparable damage.

87 TouchScreen Series Model: DT-TS / DT-NTS
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1. OFF Key - Single press to enable/disable frost protection or press and hold to
turn o display.
2. Flame Icon - Displayed when the thermostat is calling for heat.
3. Keypad Lock Icon - Displayed when the keypad is locked.
4. Frost Icon - Displayed when the thermostat is in frost protection mode.
5. Room Temp - Indicates the current temperature sensor mode.
6. Set - Displayed when the target temperature is adjusted.
7. Clean Screen - Freezes screen temporarily to enable cleaning.
8. Cancel Key - Used to exit setup/program operations.
9. Setup/Programming Keys - Used to navigate setup options.
10. Up/Down Keys - Increase or decrease values shown on bottom digit group.
11. Current Temp - Indicates the current sensor temperature.
12. Units of Temperature - Degrees Celsius or Fahrenheit.
LCD Display
5
4
6
7
8
9

Room Temperature SET Temperature
Temperature Display
The temperature display information is driven by two dierent inputs; the sensor
measurement and the target temperature you have set.
This is the current room temperature. This is the temperature you are trying to
achieve in your home.
109 TouchScreen Series Model: DT-TS / DT-NTS
Locking the Keypad
The thermostat has a keypad lock facility.
• To activate the lock press the bottom right corner of the display and hold for 10 secs.
• When activated, you will see the Keypad Lock symbol.
• To cancel, press the bottom right corner of the display again for 10 secs.
Clean Screen
Pressing will disable all keys, providing you 15 seconds to wipe the screen
clean before the keys are re-activated.
Keypad Lock Indicator

1211 TouchScreen Series Model: DT-TS / DT-NTS
The keys under the temperature display allow you to adjust the
set temperature.
When you press either of these keys, you will see the temperature and
the word SET appear on screen.
Select the desired temperature and press to conrm and exit.
Temperature Control
Set Temperature
Set Icon
Pressing the key once will place the thermostat in frost protect mode.
In this mode, the thermostat will display the frost icon and will only turn the heating on
should the room temperature drop below the set frost temperature (see page 14).
Should the heating be turned on whilst in frost mode, the ame symbol will be
displayed.
To cancel the frost protect mode, press the key once.
Frost Mode
Frost Protection Mode Enabled

1413 TouchScreen Series Model: DT-TS / DT-NTS
THE FOLLOWING SETTINGS ARE OPTIONAL AND IN MOST CASES
NEED NOT BE ADJUSTED
Feature 01 – Temperature Format: This function allows you to select between °C or °F.
Feature 02 - Switching Dierential: This function allows you to increase the switching
dierential of the thermostat. The default is 1°C which means the thermostat will
switch the heating on 1°C below the set temperature and will turn it o when the set
temperature is achieved. With a 2°C dierential, the heating will switch on 2°C below the
set temperature and will switch o when the set temperature is achieved.
Feature 03 - Frost Protect: You can set whether the thermostat will maintain the frost
temperature when the thermostat display is turned o. As a default, this is enabled.
Feature 04 – Frost Protect Temperature: This is the temperature maintained when the
thermostat is in frost mode. The range is 07-17°C. The default is 12°C and is suitable for
most applications.
Feature 05 – Output Delay: To prevent rapid switching, an output delay can be entered.
This can be set from 00 - 15 minutes. The default is 00 which means there is no delay.
Optional Features Explained
The heating is indicated ON when the ame icon is displayed.
When the ame icon is absent, there is no requirement for heating to achieve the set
temperature but the thermostat remains active.
To turn the thermostat OFF completely, press and hold the OFF key .......................
The display and heating output will be turned o completely.*
To turn the thermostat back ON, press the ON key once ...............................................
Heating On/O
Thermostat completely OFF Thermostat powered ON
*See Feature 3 on page 14

1615 TouchScreen Series Model: DT-TS / DT-NTS
Feature 06 – Communication Address: This setting is used when you have
connected your thermostat to a network system. Each thermostat on the network
must have a unique communication address. This can be set from 01-32.
Feature 07 – Temperature Up/Down Limit: This function allows you to limit the use
of the up and down keys. This limit is also applicable when the thermostat is locked
and so allows you to give others limited control over the heating system.
To adjust the optional settings, follow these steps.
• Press SETUP ..................................................................................................................
• Use the Up/Down keys at the top of the screen to select the feature
number (shown on page 17) and then use the Up/Down keys in the
center to adjust the setting ....................................................................................
• Press DONE to conrm settings and exit ...........................................................
Adjusting the Optional Settings
Feature Number
Setting Value
Optional Features Continued

1817 TouchScreen Series Model: DT-TS / DT-NTS
If you need to re-calibrate the thermostat, follow these steps.
• Press and hold the OFF key to turn the thermostat OFF ........................................
• Press and hold the ON key until the temperature appears on screen ...............
• Use the Up/Down keys to congure the new temperature .........................
• Press DONE to conrm settings .......................................................................................
• Press the ON key once to turn the thermostat back ON .........................................
Re-calibrating the Thermostat
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07
FEATURE
Temperature Format
Switching Dierential
Frost Protect
Frost Protection Temperature
Output Delay
Communications ID No.
Up/Down Temperature Limit
DESCRIPTION
00 = oC
01 = oF
(°C = Default)
0.5o- 3.0oC (1.0oC = Default)
00 = Disabled
01 = Enabled
(01 = Default)
07o- 17oC (12oC = Default)
Enter Value: 00 - 15 Minutes (00 = Default)
Enter number 01-32
00o- 10oC (00oC = Default)
SETTING
Optional Settings - Feature Table
The thermostat has a reset function to restore all settings to their factory defaults.
To perform a factory reset, follow these steps.
• Turn the thermostat OFF by pressing and holding the OFF key.
Press and hold the bottom left corner of the LCD for 10 seconds .......................
• All of the screen icons will appear for 2 seconds and then disappear.
• Press the ON key once to turn the thermostat back ON .........................................
Factory Reset

2019 TouchScreen Series Model: DT-TS / DT-NTS
Wiring Diagram - DT-TS to Boiler VoltfreeWiring Diagram - DT-TS to Valve
Supply In - 85V-230V AC
Max Load - 3 Amps
For 230V Switched Live to Boiler on A2, link L to A1
LR
LS
LS & LR are normally the room thermostat connections
VOLTFREE TO BOILER
Live
Neutral
DT-TS
NA2A1
230VAC
L
P/L = Permanent Live
S/L = Switched Live
Supply In - 85V-230V AC
Max Load - 3 Amps
To connect boiler, consult
boiler makers wiring diagram
For Voltfree connections, wire
the P/L and S/L directly to the
boiler or if there is no system
valve take A1 & A2 directly
to the boiler
Heating Valve
LP/L
To Boiler S/L
Live
Neutral
N
DT-TS
NA2A1
230VAC
L

2221 TouchScreen Series Model: DT-TS / DT-NTS
Wiring Diagram - DT-NTS to UH1
Connecting DT-NTS to the UH1
UH1
ZONE X ZONE X
A2
A1
B
Y
_
+
A2
A1
B
Y
_
+
DT-NTS
Y BA2A1
- +
12VDC Network
RT1RT2
The UH1 allows connection of up to eight
12 volt network thermostats.
When connecting network thermostats to the
UH1 use CAT5-FTP or BELDEN 9538.
Connect the screen to Earth at the UH1.
Wiring Diagram - DT-TS to PRC
DT-NTS
Y BA2A1
- +
12VDC Network
RT1RT2
A2B2
NO NC CNO NC C N E L
230V SUPPLY IN
COMMS
CABLE
Volt Free Output
POWERED RELAY CARD
+
_
For 230V switched live output, link mains L to C
12V
Recommendations
Max Cable Size - 1.5MM
Back Box Depth - 35MM
Max Load - 3 Amps

23 TouchScreen Series
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