Heatmiser DT Manuel utilisateur

Model: DT / DT-N

Slimline Series

2Model: DT / DT-N

Model: DT / DT-N

Slimline Series1

Table of Contents

3-4

5-6

7-8

14-16

18-22

Product Image

Table of Contents

What is a Room Thermostat?

Installation Procedure

LCD Display

Temperature Display

Locking the Thermostat

Setting the Temperature

Frost Protection

Power On / O

Optional Features

Re-calibrating the Thermostat

Factory Reset

Wiring Diagrams

Slimline Series Model: DT / DT-N

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 programmable 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.

Slimline Series Model: DT / DT-N

Installation Procedure

This Slimline 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 18-22 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.

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.

3 4

Slimline Series Model: DT / DT-N

123

4 5 6 7

1. Room Temp - Indicates the current temperature sensor mode.

2. Frost Icon - Displayed when the thermostat is in frost protection mode.

3. Flame Icon - Displayed when the thermostat is calling for heat, the ame icon

will ash when the optimum start function is in operation.

4. Set - Indicates when changes are being made to programs or temperature set

points.

5. Current Temp - Indicates the current sensor temperature.

6. Keypad Lock Indicator - Displayed when the keypad is locked.

7. Units of Temperature - Degrees Celsius or Fahrenheit.

LCD Display

109

Slimline Series Model: DT / DT-N

Temperature Display

Room Temperature Set Temperature

This is the current room temperature. This is the temperature you are trying to

achieve in your home.

The temperature display information is driven by two dierent inputs; the sensor

measurement and the target temperature you have set.

Locking the Thermostat

The thermostat has a keypad lock facility. To activate the lock follow these steps.

• Press and hold the A and Down keys together for 10 seconds ..........

• You will see the lock symbol appear on screen .............................................

• To unlock, repeat the steps above until the lock symbol disappears.

Keypad Lock Indicator

Note: The keypad lock indicator is only displayed when the lock is active.

1211

Slimline Series Model: DT / DT-N

Temperature Control

The Up/Down keys allow you to adjust the set temperature .......................

When you press either key, you will see the word SET and the desired

temperature will be displayed on screen.

Use the Up/Down keys to adjust the SET value ..................................................

Press A to conrm settings and return to main display .............................................

Set Temperature

Set Icon

Pressing the Power button 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 icon will be displayed.

To cancel the frost protect mode, press the Power button once again.

Frost Protection Mode Enabled

Frost Mode

1413

Slimline Series Model: DT / DT-N

Optional Features Explained

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 and °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 that with a set temperature

of 20°C, the thermostat will switch the heating on at 19°C and o at 20°C. With a 2°C

dierential, the heating will switch on at 18°C and o at 20°C.

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.

Feature 06 – Communication Address: This setting is used when you have connected

your thermostat to a network system. Each thermostat on your 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 temperature arrow keys. This limit is also applicable when the

thermostat is locked and so allows you to give others limited control over the heating

system.

Thermostat completely OFF Thermostat powered ON

Heating On/O

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 button..........

The display and heating output will be turned OFF completely.*

Press the Power button once to turn the thermostat back ON .................................

*See Feature 3 on page 14

1615

Slimline Series Model: DT / DT-N

Optional Settings - Feature Table

FEATURE

Temperature Format

Switching Dierential

Frost Mode

Frost Protection Temperature

Output Delay

Communications ID No.

Up/Down Temperature Limit

DESCRIPTION

00 = oC

01 = oF

(°C = Default)

01o- 03oC (01oC = Default)

00 = Enabled

01 = Disabled

(00 = Default)

07o- 17oC (12oC = Default)

00 - 15 Minutes (00 = Default)

Set unique coms address 01-32

00o- 10oC (00 = Default)

SETTING

Adjusting the Optional Settings

To adjust the optional settings, follow these steps.

• Press and hold the Power button to turn the thermostat OFF ..............................

• Press and hold the Clock button until the display appears as shown below ...

• Use the Clock button to cycle through the features .................................................

• Use the Up/Down keys to change the setting ....................................................

• Press A to conrm settings .................................................................................................

• Press the Power button once to turn the thermostat back ON .............................

Setting Value

Feature Number

1817

Slimline Series Model: DT / DT-N

TO CONNECT BOILER CONSULT

BOILER MAKERS DIAGRAM

NEUTRAL

LIVE

230V SUPPLY IN

230V AC 50/60Hz

SWITCHED LIVE TO BOILER

A1A2 LN

230VAC

Wiring Diagram - DT 240V Switching

Re-calibrating the Thermostat

If you need to re-calibrate the thermostat, follow these steps.

• Press and hold the Power button to turn the thermostat OFF ...........................

• Press and hold BOTH the Power and Down keys together until the

temperature appears on the screen ........................................................................

• Use the Up/Down keys to congure the new temperature ...........................

• Press A to conrm settings ..............................................................................................

• Press the Power button once to turn the thermostat back ON .........................

Factory Reset

To perform a factory reset, follow these steps.

• Press and hold the Power button to turn the thermostat OFF ...........................

• Press and hold the Power and Up keys together until the LCD powers up.

All of the icons will be displayed on screen ............................................................

• When the icons have disappeared from the screen, the thermostat has

been successfully reset.

• Press the Power button once to turn the thermostat back ON ..........................

The thermostat has a reset function to restore all settings to their factory defaults.

THIS UNIT MUST BE PROTECTED BY A FUSE OR RCD

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