Designa DESE series, DESE050, DESE150, DESE070, DESE100 Instruction Manual

These instructions should be read carefully
and retained for future use. Note also the

information presented on the appliance.

Designa DESE Storage Heater

Models: DESE050 / DESE070 / DESE100 / DESE125 / DESE150

08/80286/0 ISSUE: 3 Series: A

INSTRUCTION MANUAL

Installation and Operating

IMPORTANT SAFETY ADVICE

When using electrical heaters, basic precautions should always be followed to reduce the risk

of re, electrical shock, and injury to persons, including the following:

IMPORTANT – The wall bracket supplied with the heater must be used.
IMPORTANT – All packaging should be disposed of in an appropriate manner.

OVERHEATING WARNING
WARNING - In order to avoid overheating, do not cover or obstruct the heater. Do not place material

or garments on the heater, or obstruct the air circulation around the heater, for instance by curtains

or furniture, as this could cause overheating and a re risk. NEVER cover or obstruct in any way the

heat outlet slots at the top of the heater or the air outlet slots in the base of the heater.

WARNING - THE SURFACES ON THIS HEATER CAN BE HOT.

The heater carries a warning ‘DO NOT COVER’ to alert the user to the risk of re that exists if

the heater is accidentally covered.

CAUTION

- Some parts of this product can become very hot and cause burns.

Particular attention has to be given where children and vulnerable people are present

.

For your safety this heater is tted 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 the power to the heater. Once the heater has cooled down, it will reset automatically, it
will continue to cycle on and off automatically until the reason for overheating is removed.

The display screen may ash red to indicate the product has overheated. To reset the display,

remove the obstruction and hold Enter for 10 seconds.

SUITABLE APPLICATIONS
WARNING - This heater is suitable for normal domestic household purposes and should not be

used in any other type of environment. This product should only be used in the country where it
was purchased from by a recognised commercial retailer. Do not use outdoors.

SERVICING AND REPAIRS
WARNING - Servicing and product repairs should only be undertaken by the manufacturers

approved service agent or a similarly trained or qualied person, using only exact manufacturer

approved spare parts.
PLEASE NOTE: Household dust, lit cigarettes, candles and oil burners, combined with the

convection effect of electric heaters can cause signicant soot deposits to build up on the
surface directly above and to the sides of the heater. This is not a fault of the heater. Extensive

burning of candles or smoking in the operating environment of this product can produce heavy
discolouration within a few months of use.

CAUTION

FAILURE TO FOLLOW THESE INSTRUCTIONS MAY CAUSE INJURY AND/OR DAMAGE
AND MAY INVALIDATE YOUR GUARANTEE

IMPORTANT

THESE INSTRUCTIONS SHOULD BE READ CAREFULLY AND RETAINED FOR
FUTURE REFERENCE. Note also the information presented on the appliance

2

OPERATING WARNINGS

IMPORTANT: Remember to observe all safety warnings and precautions when operating the

heater on the automatic or timer modes, either attended or unattended since a re risk exists

when the heater is accidentally covered or obstructed.

Mains cables are not provided with this heater.

CAUTION: Do not use if either of the heater’s mains power leads become damaged. If the supply

cord is damaged it must be replaced by the installer or an approved service partner.

Curtains must not come to within 250mm of the top of the heater.

Do not sit or stand on the heater

Do not place objects in contact with the heater.

To maintain stability, it is essential that the heater is placed on a level surface and care should
be taken to avoid irregular surfaces, such as may result from carpets or tiled surrounds
partially protruding under the heater.

ELECTRICAL INSTALLATION
The installation of the heater should be carried out by trained personnel.
WARNING - Minimum clearances and IP zone requirements must be adhered to in

accordance with the current wiring regulations.
WARNING - The electrical installation of this heater must be carried out by a suitably qualied or

trained electrician, and be in strict accordance with current wiring Regulations. The peak supply
must be connected via a switched fused spur with a fuse rated suitably for the appliances ex,

the off-peak supply , via a 20A double pole switch. Failure to follow these instructions will mean

that the manufacturer’s instructions have not been adhered to. THERE ARE NO EXCEPTIONS.

• This heater must be earthed

• Not suitable for connection via a plug top

• Do not locate the heater immediately above or below a xed electrical point i.e. socket outlet.

This appliance is intended for installation to a single phase supply only and is not suitable for
connection to 3 phase supplies.

The heater is not tted with a mains cable, this should be tted by the installer. Cable type
(minimum size) H05VV-F 1.5mm² three core for peak and 2.5mm² three core for off-peak for
connection to the xed wiring of the premises through suitable isolation devices positioned
adjacent to the heater. The supply circuits to the heater must incorporate a double pole isolating

switch having a contact separation of at least 3mm.
In installation the supply cord may be cut to the appropriate length for the electrical connection

point. Excess cable should not be inserted or stored behind the heater.

If, during reassembly of the heater, a part of the thermal insulation shows damage or deterioration,
it should be replaced by an identical part.

WARNING: All electrical connections to the terminal block must be secure to prevent risk of
ignition. Tighten to 0.5 Nm.

3

CHILD SAFETY
WARNING - Fixing kit screws are a potential choking hazard.
WARNING - This appliance is not intended for use by persons (including children) with reduced

physical, sensory or mental capabilities, or lack of experience and knowledge, unless they have

been given supervision or instruction concerning use of appliance by a person responsible for
their safety.

This appliance can be used by children from 8 years and above and persons with reduced

physical, sensory or mental capabilities or lack of experience and knowledge if they have been

given supervision or instruction concerning use of the appliance. Children shall not play with the
appliance. Cleaning and user maintenance shall not be made by children without supervision.
Children of less than 3 years should be kept away unless continuously supervised. Children
aged from 3 years and less than 8 years shall only switch on/off the appliance provided that it
has been placed or installed in its intended normal operating position and they have been given
supervision or instruction concerning use of the appliance in a safe way and understand the
hazards involved. Children aged from 3 years and less than 8 years shall not regulate and clean
the appliance or perform user maintenance.

Models DESE050 DESE070 DESE100 DESE125 DESE150

Input Rating +5% / -10% 1020W 1560W 2220W 2760W 3300W

Nominal Output (kW) 0.50 0.70 1.00 1.25 1.50

Storage Element Rating 230/240V~: 936/1020W 1435/1560W 2042/2220W 2540/2760W 3024/3300W

Rated Charge Period: 7.7 - 7 Hours 7.7 - 7 Hours 7.7 - 7 Hours 7.7 - 7 Hours 7.7 - 7 Hours

kWh: 7.14kWh 10.9kWh 15.5kWh 19.3kWh 23.1kWh

Fan Wattage 11W 11W 11W 11W 11W

UI Wattage 0.5W 0.5W 0.5W 0.5W 0.5W

Sound Level dB (measured in test chamber) 27 29 32 30 31

Energy Cell Packs Required
(047243)

4 6 8 10 12

Installed Weight: 63kg 85kg 107kg 133kg 155kg

Height (mm) 749 749 749 749 749

Width (mm) 581 703 825 947 1069

Depth (mm) 182 182 182 182 182

Technical Details

4

All Models

Controls

Digitally controlled, Electronic Thermostat accurate to (±0.2oC).
Setpoint range (7-26°C)

Timer modes: 7 Day Programmable User Timer

Controller UI

Graphical display with white backlight

•Capacitive buttons with audio feedback

•User replaceable battery (Coin-Type)

Controller Functions

•Open window detection

•Automatic Charge Control

•Heat Demand % Adjustment

•History/Reporting

•Child Lock

Safety Features

Electronic overheat protection. Additional electromechanical overheat protection.

LVD and EMC compliance.

Storage Core High-density bonded magnetite energy cells

Colour/ Finish White (RAL 9016) ‘Trafc White’ Grill RAL7035 anodised

Battery Backup 3.3V coin cell battery to backup real time clock. Battery life > 5 years.

Supply

1/N/PE 230-240V / 50Hz (Peak / Off Peak)

Class II

IP Rating IPX4

Approvals

CE & BEAB

Warranty

2 Years

Country of Origin United Kingdom

Manufacturer

Denmans

5

Y

Y

X

X

Room Sensor

Housing

Models 050 070 100 125 150

Feet Position
1 ‘A/B’

167/124 167/185 167/246 160/314 160/375

Feet Position
2 ‘A/B’

93/198 93/259 93/320 100/374 100/435

1. Place the heater within its packaging at

on the ground with arrows printed on the
base of the carton pointing upwards.

2. Feet are tted in the default position (X
position) and can be moved to the outside
position (Y position) if necessary. (Fig.
1a and Fig. 1b). NB: Repositioning
of feet may be required depending on

oor arrangement (e.g. replacing an

installation).

Stand the heater on its feet before removing
the packaging.

CAUTION SHOULD BE TAKEN NOT TO
REST THE HEATER UPON THE ROOM
TEMPERATURE SENSOR HOUSING. (Fig. 1b)

Dispose of packaging in an appropriate way.

Read these instructions carefully before

proceeding any further with the installation.

3. Ensure the heater is stable before removing
the screws which hold the bottom grille panel in position. (Fig. 2) Set the bottom grille to one
side, avoiding its sharp edges when handling.

4. Remove the two screws securing the front panel, located at the bottom of the heater (Fig. 3).
Once removed set carefully to one side to avoid damage.

NOTE - Retain these screws for reassembly. If misplaced, M4 x 10 Tritap screws must be used.
IMPORTANT - Do not use the outer top panel or the rear heat shield to lift or carry the heater.

A

749mm

150mm

(min)

150mm

(min)

B

W

BA

Preparation

Fig. 1bFig. 1a

6

Do not place objects within 300mm of the front of the heater
and 150mm (min. 75mm) either side.

250 mm

300 mm

150 mm

Ensure the back of the heater is ush against the wall. If the skirting board is taller than

120mm and deeper than 15mm it should be cut to accommodate safe installation of the
heater.

120 mm

15 mm

150 mm

Fig. 2 Fig. 3

7

The heater must be securely xed to a wall. Screws with suitable wall xings for solid walls

are provided. If other wall types are encountered it is the installer who must choose the most

suitable xing.

SUGGESTED FIXINGS

SOLID BRICK/BLOCK: No. 10 size high temperature resistant plastic inserts, 8mm drill bit. Drill

hole 15mm deeper than plastic insert length.

PLASTERBOARD - If possible locate studding and use No. 10 woodscrews directly into the

wood, otherwise M5 rawlplug intersets are suitable.

NOTE: FOR OTHER WALL TYPES (eg. timber frame and hollow concrete)
SEEK SPECIALIST ADVICE.

If the oor is carpeted then the carpet should be slit and underlay cut away to allow the feet to
rest rmly on the oor. Carpet gripper must be locally removed so that the feet may rest in a

level position.

This appliance is heavy. The oor must be checked to ensure that it is capable of bearing the

weight of the unit, up to 165kg.

This Heater is rated IPX4

DO NOT UNDER ANY CIRCUMSTANCES ATTEMPT TO MOVE OR REPOSITION
THIS HEATER WITHOUT SEEKING EXPERT ADVICE. THE HEATER SHOULD
NEVER BE FREED FROM THE WALL WITH ENERGY CELLS INSIDE.

USE CAUTION WHEN INSTALLING THIS PRODUCT, UNPAINTED METALWORK
CAN HAVE SHARP EDGES.

IMPORTANT Head of wall xing screw must be anged pan head type and have a diameter

no less than 11mm. No countersunk headed screws to be used for wall xing.

Installing the Heater

Fig. 5Fig. 4

8

5. Place the heater in its nal position and mark the xing holes through the location holes

visible through the back of the heater.

6. Six xing positions must be selected for models DESE100, DESE125, DESE150 and at least

4 xing positions for models DESE050 and DESE070. Fig. 6.

Common xing points for all heater sizes are shown in both Fig. 4 and Fig. 5.

Mark the positions for the xing holes towards the bottom of each slot, this allows the heater to
settle once the energy cells have been tted.

Move the heater away from the wall, drill the holes and t the wall xings best suited to the

application.

Secure the heater to the wall using correct quantity of screws required per model, using the

appropriate screw ttings.

NB: Do not fully tighten screws until energy cells are fully loaded to ensure full weight is

on feet and not on the wall xings.

NOTE: UNDER NO CIRCUMSTANCES SHOULD ANY SCREWS BE REMOVED WITHOUT
FIRST REMOVING ALL ENERGY CELLS FROM THE HEATER.

NEVER FREE THE HEATER FROM THE WALL WITH ENERGY CELLS REMAINING INSIDE
THE HEATER CAVITY.

NOTE: ANY FIXING DROPPED INTO HEATER MUST BE RETRIEVED AS THEY MAY
IMPACT PRODUCT SAFETY OPERATION.

Fig. 6

9

Warning: Before obtaining access to terminals, all supply circuits must be disconnected.

7. The heater leaves the factory congured to operate with two mains supplies, a 24 hour peak

supply and an off peak switched supply. (Fig. 7)

Not suitable for use on single supply.

Storage / Fan circuit

Fan Circuit = PEAK L

Storage Circuit = OFF-PEAK L

Fan Circuit = PEAK N

Storage Circuit = OFF-PEAK N

The earth wire should be connected into the earth terminal block marked E

WARNING - Terminal block maximum torque 0.5 Nm

Neutral
Live
(Off-Peak)

Neutral
Live
(Peak)

Earth
(Both Supplies)

Switched
Supply
Terminal Block

Mains
Cable

Tighten Screws

Electrical Connections

Fig. 8Fig. 7

10

8. The mains cable entry and terminal block will be visible on the right hand side of the unit.

Insert the mains cables through the cable gland at the bottom of the heater in readiness for
connection (Fig. 8).

IMPORTANT - Only heat resistant ordinary polyvinyl chloride sheathed exible cord should be

used, the following codes apply;

IEC - 60227 IEC57 or CENELEC - H05V2V2-F

Maximum Cable Sizes

Peak mains cable 1.5mm²
Off-peak mains cable 2.5mm²

WARNING - Maximum torque 0.5 Nm
WARNING: All electrical connections to the terminal block must be secure to prevent

risk of ignition.

11

Fig. 10Fig. 9

Fig. 12Fig. 11

12

9. Remove the inner front and insulation to gain access to the core of the heater.

Lay the inner front carefully to one side to ensure it is not damaged. (Fig. 9)

10. Remove the cardboard element support and dispose of. (Fig. 10)

Energy Cells

The energy cells are supplied separately to the heater in packs of three.

Energy Cells should be handled with care due to the weight and risk
of hand/foot injury.

11. The energy cells have several grooves on one surface for locating around the

elements. The two slots through the centre of the energy cell create the air
passages within the core.

Position the rst energy cell of the bottom row to the right, rmly pressed against
the side insulation with the element grooves facing upwards and tting neatly
around the element. Angle the element upward to t the energy cell.

Position the second energy cell in the row against the left-hand insulation. Place
the remaining energy cells between the rst and second in the row. (Fig. 11)

DO NOT DISCONNECT THE ELEMENT TERMINALS

In addition ensure the slots for the air passages line up with the holes in the base
insulation.

Fit the remaining energy cells to the bottom row, being careful not to damage or
dislodge the element.

Note - The bends in the element locate around the grooves in the energy cell
to secure the element.

12. Position the second row of energy cells on top of the rst but this time the

energy cells must be upside down ensuring the grooves are positioned over
the elements. (Fig. 12)

Building the Heater Core

30mm ±1mm

NOTE:

The element tails must extend
no further than 30mm into the
right hand chamber.

13

U

Fig. 14Fig. 13

Fig. 16Fig. 15

14

13. The third row of energy cells is positioned in a manner similar to the rst row.

Again be careful not to damage or dislodge the element. (Fig. 13)

14. Fit the fourth row of energy cells above the third row in the upside position.

Again, the rst energy cell should be positioned rmly against the right-hand
insulation, and the second energy cell should be positioned rmly against the

left-hand insulation. (Fig. 14). Repeat for the fth and sixth rows of energy cells
built around the third element to complete the core build.

15. Remember the top row of energy cells must be tted upside down. (Fig. 15)

Check that all the energy cells are secure and evenly located.

16. Close the core by retting the inner front panel complete with insulation, starting

at position ‘U’ and working clockwise. (Fig. 16)

Ensure the bottom tabs are located inside the chassis and that the screws are tightly
secured down each edge.

Ensure the screws retaining the heater to the wall are fully tightened, once the
energy retention cells are fully loaded. (Fig. 6)

IMPORTANT

Double check all mains connections are secure and excess cable is restrained and

not in contact with any of the heater casing.

ON NO ACCOUNT SHOULD ANY SURPLUS CABLE BE PUSHED INSIDE OR
BEHIND THE HEATER.

Once installed DO NOT attempt to reposition the heater without rst unloading

the energy cells.

Reassembly

To replace the bottom grille and front panel, reverse steps 3 and 4 of these instructions

under the section headed Preparation.

Inspect the grille guard for damage before retting the lower grille to the heater.

Ensure all xings are secure.

15

The controls are located on the top of the heater. The heater is tted with an adjustable
electronic controller consisting of a display screen and six touch sensitive buttons.

The heater is tted with an adjustable thermostat enabling the room temperature to

be controlled. The minimum room temperature is 7°C. The maximum temperature
is set to 26°C. A temperature of 21°C represents a normal room temperature.

1

Display Screen

2

‘Menu’ Button

3

‘Back’ Button

4

‘Up and Down’ Arrows

5

‘Enter’ Button

6

‘Advance’ Button

7

Heating Status

NOTE:

Should the heater fail to operate, this may
be due to the room temperature being
higher than the thermostat setting.

NOTE:

Your heater may produce some noise during
operation. This noise is caused by the low
noise fan and expansion and contraction of
the metalwork as it changes temperature,
and is normal for this type of product. Whilst
the noise produced is usually very quiet,
certain environmental factors can make it

more noticeable, such as hard ooring or

minimal furnishings.

1

57 3

2 46

User Timer

Comfort On

Operation

16

The heater controls can be easily adjusted by using the six buttons on the User Interface.

1

The Display Screen shows the options available at each stage of adjustment.

2

Menu - displays the main options list;

- Date/Time - Set the date and time.

- Mode - Set the mode of operation.

- Options - Keypad sound, daylight savings time, communication settings and service

information.

3

Back returns to the previous programming stage.

4

The UP and DOWN buttons are used to navigate through the menus and alter setting values.

The UP and DOWN buttons are also used to adjust the required room temperature on the
main screen. The screen colour changes based on the temperature selected, showing deep
blue through to bright red.

5

Enter is used within the menu options to conrm settings. On the main screen pressing Enter

will display the enabled features.

The timed periods during which the heater is providing heat are dened as ‘Comfort On’ (this

is displayed at the bottom of the screen).

Outside of heating periods the heater will not deliver heat and these periods are called

‘Comfort Off’.

While constant heat modes are active, the mode of operation is displayed at the bottom of

the screen

6

The Advance button overrides the heating settings and changes the operational state of

the heater. Pressing Advance will cause the heater to remain on until the next Comfort Off
period is due, or off until the next Comfort On period is due.

Control Functions

17

After 30 seconds the heater will default back to the Main Screen. Here the chosen temperature
is displayed along with the mode of operation. Any use of the Advance, function will be displayed
here, and pressing Enter will show engineer’s diagnostics and 7 day history screens.

When left inactive for a long period of time this display will ‘sleep’ and the text will disappear.
Press any button for its return.

NOTE:
The display screen will
return to the main screen
after a period of 30
seconds of inactivity.

NOTE:
Pressing enter will show
the engineer’s diagnostics
and 7 day history screens.
Ref: page 17.

The heater incorporates a real time clock with calendar
function. The time clock has a battery backup that will
keep the clock running 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 UP and Down
to select the correct day of the month and press Enter
to select.

Repeat this operation, until the date and time has been

set, ensuring to press Enter to select. Press Back
button to return to the Main Screen once Set has been
displayed.

User Timer

Comfort On

User Timer

Comfort On

Date/Time

THU

27/07/2017

07:12

Date/Time

Set

U1:033 CC:016

AL6027

(0X422)

User Timer

A 2 3300 0

B 422 M 0

C 19.3 16.1

D 6.5 R 12667

E 21.0 26.0
F 19.3 15.9

G 28840 0 0
H 135 0 1841

7 Day History

Energy Used kWh

20/10/2017 0.0
21/10/2017 0.0
22/10/2017 0.0
23/10/2017 0.0

24/10/2017 0.0

25/10/2017 0.0

Main Screen

Setting the Date and Time

Main Menu

Date/Time

Mode

Options

18

NOTE:

Up and Down can be used to adjust the

required room temperature.

NOTE:
It is recommended that the timer is used as
doing so can reduce the running cost.

The heater comes pre-programmed with a user adjustable timer

User Timer (pre-programmed, factory default) - provides greatest exibility to the user. Four

time slots are available throughout the day and these can be customised for each day of the
week. Factory default times: 06.30 until 09.30, 11.00 until 13.00, 15.00 until 17.00, 18.00 until

22.00.

Mode of Operation

19

NOTE:

Once modied a programme must be

selected if you want to begin using it.

Timer Modes

To choose the timer mode press Menu and then Down to select Mode. Then press Enter.
Then select Timer Mode, again using the Enter button.

Select User Timer mode by pressing Enter.

For options User Timer, three choices are available - Select, Preview and Modify.

• Select - choose this timer option.

• Preview - view the times currently set.

• Modify - change the times currently set.

When Modify is chosen, select and change each option using the Up, Down and Enter buttons.
At the end of each period, select Next to move to the following period. When a day is complete
select Save to update it.

Once the rst day has been set up it is possible to copy these settings to successive days or all

days by either choosing Copy Next or Copy All.

If preferred each day can be modied individually and saved. It is also possible to Clear each
day or Clear All days to factory default times. Options are;

• Save - save times for one day.

• Copy Next - copy times to following day.

• Copy All - copy times to all seven days.

• Clear - factory defaults all times that day.

• Clear All - factory default times for all seven days.

To select a mode, choose Select and press Enter.

Main Menu

Date/Time

Mode

Options

Mode

Timer

Copy All

Selected

User Timer

Comfort On

Choosing and setting a Mode

20

Press Up and Down to set the return date, then press the Enter button.

Press Up and Down to choose a temperature to be maintained during this period and press

the Enter button. At the end of the holiday mode the heater will automatically revert back to
the previously selected programme.

Timer Mode

User Timer

User Timer

Select

Preview

Modify

< THU >

< Morning >

ON: 07:00

OFF: 08:30

Next

< THU >

< Evening >

ON: 17:00

OFF: 22:00

Save

< THU >

< Evening >

ON: 17:00

OFF: 22:00

Copy All

User Timer

THU

Saved

21

The Advance function allows the heating prole of the heater to be changed temporarily. When
a timer has been selected, the Advance function is used to begin the next Comfort On mode
early. If the heater is in Comfort Off mode and heat is required, press the Advance button.

If the heater is in Comfort On and heat is not required, press the Advance button and the
heater will turn off until the beginning of the next Comfort On period.

The Options menu allows the settings to be modied to suit the user’s preferences. These are;

DST Rule - Select your daylight saving setting. The heater clock will automatically adjust
for daylight saving (British Summer Time as it is often referred to). If no adjustment is

required then select none.

Report - Service information is displayed.

Sound - Audio feedback can be enabled or disabled.

Comms - Choose to enable or disable Wireless Connectivity.

Advance

Comfort Off

Options

DST Rule

Report

Sound

Comms

Advance

Options

22

In cases where unauthorised persons may tamper with the control settings it is possible to set
a tamper-proof feature.

To lock the controls press Back and Enter for three seconds. Child Lock will appear at the
bottom of the screen. To unlock the control repeat the action of pressing Back and Enter for
three seconds.

NOTE:
The controls cannot be
adjusted when child lock
is active.

User Timer

Comfort On

Child Lock

Child Lock

User Information

User Information
Press and hold Enter for ve seconds to enter the User Information menu;

Open Window detection (OW), when enabled, the heater will reduce the target room

temperature to limit the energy waste when an open window is detected. Disabled as default.

Factory Reset returns all settings to the factory presets.

Extra Charge - forces an extra charge of up to seven hours during off-peak periods.

If the output of the heater is not able to deliver the required comfort level then it is possible to
force the heater to store additional energy. In this way more electrical energy is stored during
the off-peak period and this will increase comfort levels. Up to seven hours additional off-peak
charging can be selected.

Note: The extra charge option will lead to more energy being stored during the off
peak period, this will lead to higher running costs. Only use this setting when a room
is consistently below the required temperature and you are sure that the timer mode is
set up and selected correctly.

User Info

Open Window

Factory

Extra Charge

23

In order to enter the Service menu, Back, Menu & Enter must be pressed simultaneously and

held for 10 seconds.

Charge Time - for Service personnel use only.

Slave Mode - for Service personnel use only.

If more than one heater is installed in the same room it is recommended

that the smallest capacity heater is set as a Slave.

Disabled as factory default.

Rm Temp Offset - for Service personnel use only.

Allows to set a Room Sensor temperature offset.

Factory pre-set offset as default.

Service

Change Time

Slave Mode

Rm Temp Offset

Service

24

If more than one heater is installed in the same room it is recommended that the
largest capacity heater is set as the master and all smaller capacity products are
set as slaves.

Press Menu, Back and Enter for 3 seconds to enter the service menu,
select ‘Slave Mode’ and press Enter. Select ‘Enable’.

Slave Mode

Disable

Enable

Service Menu

Charge Time

Slave Mode

Rm Temp Offset

Energy Saving Tips

25

The energy we use to heat, light and power our homes contributes over a quarter of the UK’s

carbon emissions, the principle contributor to climate change. Around half the energy used in

the home is for heating and hot water, so using your heating system efciently will not only help

the environment, but also save you money.

Energy efciency tips for heating and hot water

1. Don’t set the temperature to high...

By reducing the thermostat setting by just 1°C, you can reduce your energy use by as much

as 10%.

2. Use it where you need it...

Set the appropriate temperature on your heaters for the room they are in; for example,

leave the thermostat on a heater in a spare bedroom on a lower setting.

3. Use it when you need it...

Use heaters tted with timers or linked to central controllers to turn the heating on only

when you need it and automatically switch it off when you don’t.

4. Curtains

Close your curtains at 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 for the rooms you heat most.

6. Treat your hot water tank...

Give it a jacket. An insulating jacket for hot water tanks costs only a few pounds and pays for

itself within months. Fit one that’s at least 75mm (3”) thick and you could save £10-15 a year.

7. Water

Use a shower if you have one to save time, money and water. Don’t set the thermostat too

high on your water heater - 60°C/ 140°F is usually adequate for bathing and washing. Put

the plug in when running hot water in your sink - leaving hot taps running is both wasteful

and expensive. Ensure dripping taps are repaired quickly. In just one day, you could waste
enough water to ll a bath.

Other Energy Saving Tips for Around the Home

1. Lights

Turn off lights whenever you leave a room for more than ten minutes. Use low-energy bulbs

wherever you can as they use less than a quarter of the electricity used by ordinary light
bulbs and last ten times longer!

2. Cooking

Use the right size pan for food and cooker hob. Keep saucepan lids on - this enables you

turn down the heat. Boil water for cooking in a kettle rst.

Energy Saving Tips

26

During the initial operation, some odour may be noticed due to the newness of materials used
in manufacture. This is normal and will disappear after a short period of use. It is however
advisable to keep the room well ventilated.

Cleaning

WARNING - ALWAYS ISOLATE THE POWER SUPPLY BEFORE CLEANING THE HEATER.

Before commencing cleaning allow the heater to cool. The outside can be cleaned by wiping it

over with a soft damp cloth and then dried. Do not use abrasive cleaning powders or furniture

polish, as this can damage the surface nish.

Discolouration of wall nishes can sometimes occur immediately above a heater due to the

properties of some paints and decorating materials or the presence of environmental impurities
in the air (such as soot, cigarette smoke or incense generated from the burning of candles, etc.).

A suitable shelf may be tted to limit the extent of any wall discolouration.

Recycling

For electrical products sold within the European Community. At the end of the electrical

products useful life it should not be disposed of with household waste. Please recycle
where facilities exist. Check with a Local Authority or retailer for recycling advice in
your country. Batteries should be disposed of or recycled in accordance with WEEE
Directive 2012/19/EU. Packaging should be recycled where possible.

Important

27

Important

For electrical products sold within the European Community. At the end of the electrical products
useful life it should not be disposed of with household waste. Please recycle where facilities exist.
Check with a Local Authority or retailer for recycling advice in your country. Batteries should be
disposed of or recycled in accordance with WEEE Directive 2012/19/EU. Packaging should be
recycled where possible.

What does a Denmans Guarantee cover?

Denmans products deliver reliable service for normal, household use in domestic settings.
All Denmans products are individually tested before leaving the factory.

If you are a consumer and you experience a problem with your Denmans product, which is found
to be defective due to faulty materials or workmanship within the Guarantee Period, this Denmans
Guarantee will cover repair or - at the discretion of Denmans – replacement with a functionally
equivalent Denmans product.

The Denmans Guarantee Period is two calendar years from the date of purchase of your Denmans
product, or the date of delivery of the product, if later. The Denmans Guarantee is conditional upon
you providing the original purchase receipt as proof of purchase. Please therefore retain your receipt
as proof of purchase.

If you do experience a problem with your Denmans product please call the Helpline number on
0344 879 3588. We will need details of your Denmans product, its serial number and a description of

the fault which has occurred. You can nd the model number and serial number for your Denmans

product on the heaters side. Once we receive your information and proof of purchase we will contact
you to make the necessary arrangements.

If your Denmans product is not covered by this Denmans Guarantee there may be a charge to repair
your product. However, we will contact you for agreement to any charges before any chargeable
service is carried out.

What is not covered by a Denmans Guarantee?

The Denmans Guarantee does not cover any of the following:

• Any fault or damage to your Denmans product due to faulty materials or workmanship occurring

outside the two-year Guarantee Period.

• Any fault or damage occurring to any pre-owned Denmans product or to any other equipment or

property.

• Accidental damage to your Denmans product or damage to your Denmans product from external

sources (for example, transit, weather, electrical outages or power surges).

• Fault or damage to your Denmans product which is:

• Not due to faulty materials or workmanship or which is due to circumstances outside

Denmans control.

• Caused by use of your Denmans product for anything other than normal domestic household

purposes in the country where it was purchased.

28

• Caused by any misuse, abuse or negligent use of the Denmans product, including but
not limited to any failure to use it in accordance with the Operating Instructions supplied
with the product.

• Caused by any failure to assemble, install clean and maintain your Denmans product in

accordance with the Operating Instructions supplied with the product unless this was carried
out by Denmans or its authorised dealers.

• Caused by repairs or alterations to your Denmans product not carried out by Denmans service

personnel or its authorised dealer(s).

• Caused by use of any consumables or spare parts for your Denmans product which are not
Denmans - specied.

Terms and Conditions

• The Denmans Guarantee is valid for Denmans from the date of purchase of your Denmans product

from a recognised retailer in the country of purchase and use, or the date of delivery of the product
if later, always provided the original receipt has been retained and is produced as proof of purchase.

• You must provide to Denmans or its authorised agents on request the original receipt as proof

of purchase and - if required by Denmans - proof of delivery. If you are unable to provide this
documentation, you will be required to pay for any repair work required.

• Any repair work under the Denmans Guarantee will be carried out by Denmans or its authorised

dealer(s) and any parts that are replaced will become the property of Denmans. Any repairs
performed under the Denmans Guarantee will not extend the Guarantee Period.

• Any replacement of your Denmans product by Denmans during the Guarantee Period will start

the Denmans Guarantee Period afresh from the date of delivery of the replacement Denmans
product to you.

• The Denmans Guarantee does not entitle you to recovery of any indirect or consequential loss or

damage including but not limited to loss or damage to any other property.

• The Denmans Guarantee is in addition to your statutory rights as a consumer and your statutory

rights are not aected by this Denmans Guarantee.

Contact Denmans

If you have any questions about what the Denmans Guarantee covers and does not cover or how
to claim under the Denmans Guarantee, please contact us using the information on the back page.

Contact details

Denmans Customer Support
Steeple House, Unit 17, City Business Park, Easton Road, Bristol, BS5 0SP

29

IMPORTANT: Before replacing the battery ensure the heater is isolated from the electricity

supply.

NOTE – Battery should be disposed of in an appropriate manner
This product is tted with a replaceable battery in the controls. To replace the battery, follow

the steps below.

1. Unscrew the cover of the user interface and pivot away from the housing as shown in
Fig. 17. Set the cover and the screw safely to one side.

2. Slide the catch and pull the module up from the User Interface as shown in Fig. 18

3. Move the module clear of the User Interface to access the battery, Fig. 19

4. Remove the coin cell battery and replace.

5. Slide the module back into the User Interface, ensuring the catch in engaged

6. Replace the cover and secure using the screw

Clean the outlet grilles and adjacent surfaces after the rst operation as some dust

may be produced when the heater is rst used.

Battery Replacement

Fig. 18

Fig. 20Fig. 19

Fig. 17

30

This product complies with Lot20 of the Energy Efciency Directive (2015/1188).

Type of heat input for electric storage local space heaters

Electronic heat charge control with room temperature feedback

Yes

Type of heat output / room temperature control

Electronic room temperature control plus 7 day timer Yes

Model Identier(s):

DESE050 DESE070 DESE100 DESE125 DESE150

Unit

Heat output

Nominal heat output Pnom 0.5 0.70 1.0 1.25 1.5 kW

Minimum heat output (indicative) Pmin 0.0 0.0 0.0 0.0 0.0 kW

Maximum continuous heat output Pmax,c 0.8 1.0 1.2 1.4 1.6 kW

Contact details

Denmans Customer Support
Steeple House, Unit 17, City Business Park, Easton Road, Bristol, BS5 0SP

Tel: [phone]

This product complies with Lot20 of the Energy Efciency Directive (2015/1188).

Energy Related Product Directive

31

Circuit Diagram - DESE Series A

INDICATES WHITE WIRE

INDICATES BLACK WIRE

LOWER

LEFT STAT

(130° BLUE)

LOWER

RIGHT STAT

(130° BLUE)

ROOM

THERMISTER

FITTED

TO MAIN

CONTROLLER

MODULE

LIMIT STAT

(120° GREEN)

MANUAL CUTOUT

(140°)

USER INTERFACE

EARTH

EARTH

EARTH

NEUTRAL (PEAK)

LIVE (PEAK)

LIVE (OFF-PEAK)

NEUTRAL (OFF-PEAK)

FAN

PCB

LIMIT STAT

(125° BLACK)

CORE THERMISTER

MOUNTED TO INNER SIDE (o/w

PLASTIC HOUSING)

STORAGE

ELEMENTS

32

33

This product complies with the European Safety Standards EN60335-2-30 and the European Standard Electromagnetic Compatibility
(EMC) EN55014, EN61000-3-2 and EN61000-3-3. These cover the essential requirements of EEC Directives 2006/95/EC and 2004/108/EC

Customer Helpline: 0344 879 3588

heado[e-mail]

www.denmans.co.uk

Denmans Customer Support

Steeple House, Unit 17, City Business Park, Easton Road, Bristol, BS5 0SP

© Rexel UK Ltd.
All rights reserved. Material contained in this publication may not be reproduced in
whole or in part, without prior permission in writing. A division of the Rexel Group.