Dimplex xln User manual

Operating Instructions
IMPORTANT
These instructions should be read carefully
and retained for future reference. Note also
the information given on the appliance.
Ultra-Slim Storage Heaters
WARNING - THE SURFACE OF THIS HEATER CAN BE HOT. The surface temperatures of this heater are within the
requirements of EN60335-2-61, the European Standard covering the safety requirements for Electric Storage Heaters, and
momentary contact with any part of the heater should not cause injury. However, in order to be effective, heaters of any type do
get hot, especially around the air outlet grille.
Therefore, if aged or infirm persons, or young children, are likely to be left unsupervised in the vicinity of a heater
precautions should be taken to ensure that prolonged contact with the heater cannot occur. We recommend that a guard
is fitted around the heater, as is normal with some types of heating appliances in similar circumstances. A range of guards
specially designed for Dimplex storage heaters is available. If you require further information on these guards, please contact
the Dimplex Help Desk on 0870 7270 101.
CAUTION: DO NOT COVER SURFACES OF THE HEATER AND DO NOT OBSTRUCT AIR OUTLET GRILLES. Surfaces of
the heater should not be covered or obstructed as this can cause excessive temperatures that can be hazardous and may
cause safety cut-outs to operate. For example, do not put clothes, fabrics or any combustible materials on the heater or allow
curtains to come within 75mm (3”) of the top and ends of the heater and do not allow furniture to be pushed up against the
heater.
PLEASE NOTE: YOUR STORAGE HEATER IS VERY HEAVY AND MUST BE SECURELY FIXED TO ASOUND WALL.
No attempt should be made to move the heater without first seeking specialist advice. If you are not happy that the
heater has been securely fixed, please inform your installer. If, during any reassembly of the heater, a part of the thermal
insulation shows damaged or deterioration which may impair safety, it should be replaced by an identical part.
UNDER NO CIRCUMSTANCES SHOULD THE WALL FIXINGS BE LOOSENED ON THIS HEATER BEFORE THE BRICKS
HAVE BEEN REMOVED FROM ITS CORE.
DO NOT SIT OR STAND ON THE HEATER.
DO NOT PLACE OBJECTS IN CONTACT WITH THE HEATER.
IMPORTANT SAFETY INFORMATION (96514 Iss. 7)
Models XL12N, XL18N and XL24N
Your Dimplex XLN storage heater stores heat using low tariff, off-peak electricity and discharges it when tariffs are normal. These
operating instructions assume that the correct size of storage heaters have been selected to cater for the heating requirements of the
room.
Setting the Controls
The control knobs have been positioned so that they are
clearly visible to an adult, but out of sight of young children. In
this way it is hoped that they will not provide temptation to a child
to alter the settings.
Domestic Use
In cold weather set the right hand (INPUT) knob to maximum
(fully clockwise). In milder weather set the control to a lower
position.
Normally the left hand (OUTPUT) knob may be left on minimum
(fully anticlockwise). This control may be moved to maximum in
the evening if additional heat is required at that time. Return to
minimum before retiring.
Commercial Use
For normal commercial applications a setting of maximum on
the output control will ensure maximum output during working
hours. The input control should be set as described above for
Domestic Use.
Should these settings not provide the comfort levels
required, the more detailed instructions overleaf should
be consulted.

XLN Storage heater - Principle of operation
Your XLN heater consists of a core of high density heat storage
bricks surrounded by a carefully designed insulating case. During
the night time off-peak period elements within the brick core heat
up the bricks to a temperature level determined by the setting
you select using the input control knob.
During the following day the heat stored in the brick core is
gradually transmitted through the insulation and out of the heater
case.
In the morning, when the core is at its hottest, the amount
of heat being transmitted through the insulation and emitted
as radiant heat is at its greatest and the heater feels hot
over most of its upper outer surfaces. Diagram 2.
As the day progresses, heat is transmitted from the heater
to the room and the outer surface of the heater becomes
less hot and the amount of heat released in this way
becomes less.
If the amount of emitted heat becomes insufficient the
output of the heater and thus the room temperature may be
increased by means of the Output Control. This control
operates a damper flap within the heater which, when the
output control knob is at minimum, covers vertical airways
which pass directly through the centre of the core of the
heater. Even when the outer surfaces of the heater are
noticeably less hot, the core of bricks can still be at a
relatively high temperature. Opening the damper flap by
moving the output control away from minimum allows the
room air to circulate through this hot core and release more
heat to the room by convection. Diagram 3.
Input Control
The setting of this control determines the amount of charge taken in by the heater, which in turn determines the temperature of the
heater’s storage core. The higher the charge taken the higher the core temperature.
In cold weather the heater should be set to take a high charge. Setting the control at maximum ensures the heater accepts a full
charge.
In the Autumn and Spring a lower setting of the input control knob should be sufficient, the actual setting required being influenced
by the prevailing weather conditions, the room size and insulation levels. The most suitable settings will be found by experience.
Output Control
Depending upon the amount of charge accepted by the heater, the OUTPUT control allows the release of additional heat by means
of a damper which can be opened to allow a greater air flow through the heater core, and therefore additional circulation of heat. By
altering the setting of the Output control knob the damper may be opened and closed manually, or it may be made to open
automatically.

Manual Operation
With the OUTPUT control on minimum the damper remains closed, and heat is released from the heater only by normal radiation
and convection around the outer surfaces of the heater. This alone may provide sufficient heat on many occasions and therefore no
alteration of the OUTPUT control is necessary. However, if a boost of heat is required in the evening period, then moving the
OUTPUT control to maximum in the evening will immediately open the damper to allow more rapid release of any available stored
heat. When the next charging period commences the damper will automatically close to prevent this release of extra heat during the
charge period, but the OUTPUT control must be returned to minimum manually to obtain a similar operation the following day.
Automatic Operation
The damper may be pre-set to open automatically each day if required. Setting the OUTPUT control at settings other than
minimum results in an automatic boost of heat. A high setting on the output control knob causes the damper to open early afternoon/
evening, conversely a lower setting causes it to open later.
Because the automatic opening of the damper is primarily dependent on core temperature then the setting of the INPUT control
has a bearing on the time at which the damper opens. For a given setting of the OUTPUT control, the higher the setting of the
INPUT control, the later the damper will open. Lower settings on the INPUT control will mean an earlier damper opening.
The most suitable settings of the OUTPUT control for different input settings will be found by experience.
Remember - a high setting of the OUTPUT control early in the day may leave too little heat stored in the heater for the evening,
especially on low settings of the INPUT control.
IMPORTANT - Due to the newness of the materials the heater will produce a slight smell for the first few days of operation.
ROOMS MUST BE WELL VENTILATED AND YOUNG CHILDREN, CAGED BIRDS, OR PERSONS WITH RESPIRATORY
COMPLAINTS MUST NOT REMAIN IN CLOSE PROXIMITY TO THE HEATER DURING THE FIRST 48 HOURS OF THE
COMMISSIONING PERIOD.
Cleaning
To maintain the external appearance of the radiator it need only be wiped over occasionally with a dry duster. During the summer
months, or at other times when the appliance is not in use and is completely cold, the opportunity should be taken to wipe over with a
damp cloth. Do not use abrasive cleaning powders or furniture polish.
After Sales Service
Your Dimplex Storage Radiator is guaranteed for one year from date of purchase. We undertake to exchange or repair within this
period, any part found to be defective due to a manufacturing fault (applies in the UK only). This guarantee in no way prejudices your
rights under common law.
Should you require after sales service, please get in touch with the supplier through whom you purchased the appliance, or your
nearest Dimplex Service Agent.
Please do not initially return a faulty appliance or part of an appliance to us as this may result in transit damage and/or delay in
providing service. Let us know your difficulty quoting the heater’s model and serial numbers. We will then take the appropriate
action.
Total Co-ordinated Heating
Dimplex manufactures a complete range of heating appliances in matching style, to provide co-ordinated heating throughout the
home or office. Brief details are given overleaf.