Heatmiser DT-WTS1 User manual

1
Model: DT-WTS
Model: DT-WTS

Model: DT-WTS
2
Model: DT-WTS
Wireless Series Model: DT-WTS
Table Of Contents
2
1
1
2
3-4
5-6
7-8
9-10
11
12
12
Product Image
Table of Contents
What is a Room Thermostat?
Installation Procedure
LCD Display
Pairing the Thermostat
Temperature Display
Clean Screen
Locking the Keypad
13
14
15
16
17
18
19
20
21-22
Temperature Control
Frost Protection
Heating ON/OFF
Optional Features Explained
Adjusting the Optional Settings
Optional Settings - Features Table
Re-calibrating the Thermostat
Factory Reset
Recharging the Batteries

43
Wireless Series Model: DT-WTS
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
Wireless Series Model: DT-WTS
1 2
A B
Installation Procedure
Wall Mounting:
Step 1
Fix the wall plate to the wall.
Step 2
Push the thermostat onto the wall plate.
Desk Stand:
Step A
Remove the thermostat from the wall plate.
Step B
Release the desk stand.
Do
Mount the thermostat at eye level.
Read the instructions fully so you get the best from our product.
Don’t
Do not push hard on the LCD screen as this may cause irreparable damage.
Do not install near to a direct heat source as this will aect functionality.
If using the desk stand, ensure the thermostat is away from heat sources.

87
Wireless Series Model: DT-WTS
1 32 4
14
13
12
1. Frost Icon - Displayed when the thermostat is in frost protection mode.
2. RF Icon - Flashes when the thermostat communicates with the receiver.
3. Flame Icon - Displayed when the thermostat is calling for heat.
4. Keypad Lock Icon - Displayed when the keypad is locked.
5. Zone Indicator - Displays which zone on the RC1-WTS the thermostat is linked to.
6. Battery Icon - Indicates current battery charge level.
7. Room Temp - Indicates the current temperature sensor mode.
8. Set - Indicates when changes are being made to programs or temperature set
points.
9. Clean Screen - Freezes screen temporarily to enable cleaning.
10. Power: Single press to enable/disable frost protection or press and hold to turn
o display. Cancel: used to exit setup/program operations.
11. Setup/Programming Keys - Used to navigate setup options.
12. Up/Down Keys - Increase of decrease values shown on bottom digit group.
13. Current Temp - Indicates the current sensor temperature.
14. Units of Temperature - Degrees Celsius or Fahrenheit.
LCD Display
7
8
9
10
11
5
6

109
Wireless Series Model: DT-WTS
To pair the thermostat with the RC1-WTS receiver, follow these steps.
On the receiver;
Press the Pair button once.
The Communication LED will light up.
On the thermostat;
• Press PROG and then SETUP ...................................................................................
• At the top of the LCD, you will see 01.
• Use the Up key to select 05 and enter the pairing function .....................................
• Press Zone 1 or Zone 2 to select the relevant zone .......................................
(Two DT-WTS can work with a single receiver, oering a two zone system)
• In the centre of the LCD, you will see 01. This is the channel address.
The default setting of 01 can be used in most cases, but should be changed when
a conict is detected with other RF devices.
• Use the Up/Down keys to enter the address ......................................................
• Press SETUP to Pair the thermostat and receiver ........................................................
Note: You must nish pairing the thermostat before the communication LED goes out.
Pairing the Thermostat Pair Successful
The Comms LED on the receiver should ash and then go out to indicate
the pair is successful. The thermostat will display the communication icon.
Pair Fail
If the Comms LED does not ash there is a problem with the RF signal and
you should reduce the distance between the thermostat and receiver.
Where possible ensure there are no metal objects blocking the signal.
The LED will automatically go out after 1 minute.
Comms LED

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.
1211
Wireless Series Model: DT-WTS
Keypad Lock Indicator
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 10s.
• 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.

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 16).
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
1413
Wireless Series Model: DT-WTS
Set Temperature
Set Icon
Frost Protection Mode Enabled
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

1615
Wireless Series Model: DT-WTS
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 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 04 – 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.
Feature 05 – Pairing Function: Allows the thermostat to be paired with the receiver.
Feature 06 - Fail Safe: If enabled, the thermostat will send a signal to the receiver every
20 minutes. Should the receiver fail to receive the signal from the thermostat, the receiver
will activate the output for 20% of the time. This is to protect the system against a loss of
wireless signal or in case the thermostat battery fails whilst you are away.
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 Power key ..................
The display and heating output will be turned o completely.
To turn the thermostat back ON, press the Power key once .........................................
Heating On/O
Thermostat completely OFF Thermostat powered ON

1817
Wireless Series Model: DT-WTS
To adjust the optional settings, follow these steps.
• Press PROG ......................................................................................................................
• Press SETUP .....................................................................................................................
• Use the Up/Down keys at the top of the screen to select the feature
number (shown on page 18) 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
01
02
03
04
05
06
FEATURE
Temperature Format
Switching Dierential
Frost Protection Temperature
Output Delay
Pairing
Fail Safe
DESCRIPTION
00 = oC
01 = oF
(°C = Default)
0.5o- 3.0oC (1.0oC = Default)
07o- 17oC (12oC = Default)
00 - 15 Minutes (00 = Default)
Used to pair with the receiver
00 = Disabled
01 = Enabled
(00 = Default)
SETTING
Optional Settings - Feature Table

2019
Wireless Series Model: DT-WTS
All icons displayed simultaneously. Factory reset is complete.
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 Power 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 Power key once to turn the thermostat back on .......................................
Factory Reset
Calibration Temperature
Set Icon
If you need to re-calibrate the thermostat, follow these steps.
• Press and hold the Power key to turn the thermostat OFF .....................................
• Press and hold the OFF 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 Power key once to turn the thermostat back ON ....................................
Re-calibrating the Thermostat

2221
Wireless Series Model: DT-WTS
Battery Recharging
The thermostat is equipped with a rechargeable battery.
The battery can provide power for up to 6 months before recharging is required in
normal operating conditions.
To recharge the battery you need to connect the thermostat to a power source.
A mini USB to USB lead is supplied with the thermostat so you can recharge from the
USB port on your laptop or PC.
Part ref: USB-02

23
Wireless Series
Twitter: heatmiseruk
Facebook: facebook.com/thermostats
Want More Information?
Call our support team on: [phone]
Or view technical specications directly on our website:
www.heatmiser.com
PDF FAQ
Heating Professionals:
Request a copy of our product
installation guide containing
detailed technical specications
for our complete product range:
www.heatmiser.com/guide