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Quick Start Guide

This guide is for quick reference only. Please refer 
to the operating section for further information.

How Does the Heater Control Work?

The control allows you to choose when you want heat and at what temperature. 

When using a timer mode (see below), 

Comfort On

 will display on the home screen to tell you when the heater 

is maintaining the temperature displayed. 

Comfort Off

 will display when the heater is outside of a timed heating 

period. 

When 

Manual

Eco

 or 

Frost

 modes are being used the heater will always maintain the temperature shown on 

the home screen.

Set the Time

To set the date and time on the heater, press 

Menu

, then press the 

Enter

 with 

Time / Date

 highlighted. Press 

 or 

 

until the correct value is shown, then press 

Enter

 to confirm and move on to the next value. Repeat until 

all details are correct, and 

Set

 displays, then press 

Back

The time is automatically adjusted in spring and autumn between Greenwich Mean Time (GMT) and British 
Summer Time (BST).

Set the Temperature

The temperature shown on the display is the room temperature set point. This is the temperature that 
the heater will maintain during heating periods. If the room temperature is above this temperature 
then the heater will not operate. The heater leaves the factory with this temperature set at 21°C which 
represents a typical, comfortable room temperature. If you require a different room temperature then 
press either   or   on the home screen until the display shows the temperature you require.

Child Lock

If you need to lock the controls so that the 
settings cannot be changed then activate 
the 

Child  Lock

. To lock the controls press 

and hold both the 

Back

 button and 

Enter

 for 

three seconds. 

Child Lock

 will appear at the 

bottom of the screen. To unlock the control 
repeat the action by pressing both the 

Back

 

button and 

Enter

 for three seconds.

Press and hold both 

the Back button 

and Enter for three 

seconds

Timer Modes

Your heater comes pre-programmed with four timer modes. 
These modes define the periods when the heater will 
operate in 

Comfort On

 mode. The four modes are:

Timer Mode

Description

Out All Day

6 hours heating per day in two periods

Home All Day

13 hours heating per day in one period

Holiday

Set the number of days for which you 
are on holiday

User Timer

Customise times in four periods

8

Summary of Contents for LST050

Page 1: ...hould be read carefully and retained for future use Note also the information presented on the appliance Low Surface Temperature Heater Models LST050 LST075 LST100 LST150 OPERATING INSTRUCTIONS MANUAL...

Page 2: ...perience and knowledge if they have been given supervision or instruction concerning use of the appliance in a safe way and understand the hazards involved Children shall not play with the appliance C...

Page 3: ...ith the current IEE Wiring Regulations IMPORTANT DO NOT connect the BLACK pilot wire to earth Care should be taken with the installation of the pilot wire s as when switching to background setback the...

Page 4: ...used The heater should be positioned observing the minimum clearances stated around the heater see Fig 2 Fig 3 and Fig 4 DO NOT locate the heater immediately below a fixed socket outlet or connection...

Page 5: ...Fig 1 Fig 3 A 150 mm Min 430 mm 150 mm Min 150 mm 108 mm Shelf Fig 4 B 168 mm C 284 mm Fig 2 Model s B mm C mm LST050 406 270 min LST075 406 270 min LST100 406 270 min LST150 504 330 min 5...

Page 6: ...rt SP 21 C For your safety this appliance is fitted with a thermal cut out In the event that the product overheats for some reason the cut out prevents excessive temperatures on the product by cutting...

Page 7: ...y than a conventional convector maintaining an incredibly accurate room temperature The product will reduce its output as the room gets close to the target temperature to avoid overshooting the target...

Page 8: ...rature set point This is the temperature that the heater will maintain during heating periods If the room temperature is above this temperature then the heater will not operate The heater leaves the f...

Page 9: ...se this timer option Preview View the times currently set Modify Change the times currently set Please refer to the operating section of this manual for information on how to modify the programmed tim...

Page 10: ...rate this may be due to the room temperature being higher than the thermostat setting 1 2 4 5 6 3 7 Comfort On The controls are located on the top right of the front of the heater The heater is fitted...

Page 11: ...thin the menu options to confirm settings On the main screen pressing ENTER will display the enabled features 6 The timed periods during which the heater is providing heat are defined as Comfort On th...

Page 12: ...in the event of a mains power outage To adjust the time or date follow the steps below Press the MENU button Select Date Time by pressing the ENTER button Press and to select the correct day of the m...

Page 13: ...able temperature of 21 C 2 Eco mode maintains a room temperature of 18 C By reducing the room temperature slightly significant energy savings can be achieved The green display colour indicates that se...

Page 14: ...llowing period When a day is complete select Save to update it Once the first day has been set up it is possible to copy these settings to successive days or all days by either choosing Copy Next or C...

Page 15: ...oliday Active Days 07 Temperature 10 C Out All Day Selected Constant Heat Modes To choose a constant heat mode press MENU and to select Mode and press ENTER Then select the required mode again using t...

Page 16: ...Units The Options menu allows the settings to be modified to suit the user s preferences These are DST Rule Select your Daylight Saving Time setting The heater clock will automatically adjust for day...

Page 17: ...ote currently not available on this model EcoStart ES to achieve the desired temperature at the onset of the timed Comfort On period the appliance anticipates when it needs to start heating prior to t...

Page 18: ...t dusk to stop heat escaping through the windows 5 Windows Nearly 25 of heat loss can occur through poorly insulated frames and single glazing If you can t afford to double glaze all your windows go f...

Page 19: ...pplications Great Britain GB2511538 International WO2014135667 After Sales Service If this product appears damaged when first received or does not function correctly contact us by e mail at aftersales...

Page 20: ...k Website www dimplex co uk Model Identifier s LST 050 LST 075 LST 100 LST 150 Nominal heat output Pnom 0 5 kW 0 75 kW 1 kW 1 50kW Height mm 430 430 430 430 Width mm 688 688 688 860 Depth mm 108 108 1...

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