Dimplex XLS12N, XLS24N, XLS18N, XLSN Operating Instructions Manual

Operating Instructions

IMPORTANT

These instructions should be read carefully
and retained for future reference. Note also
the information given on the appliance.

Automatic 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 infi rm 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 fi tted 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 0845 600 5111.
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 the appliance by a person
responsible for their safety. Children should be supervised to ensure that the do not play with the appliance.
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 A SOUND WALL.
No attempt should be made to move the heater without fi rst seeking specialist advice. If you are not happy that the heater

has been securely fi xed, 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 with 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

(96515 Iss. 12)

Models XLS12N, XLS18N and XLS24N

Your Dimplex XLSN 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

The right hand (INPUT) knob should initially be set at the midway
position. If after the fi rst charge period the room temperature is too
high or too low, the position of this knob should be moved to a lower
or higher position as appropriate. The most suitable position should
be found by experience, and the control may be left at this position
without further alteration.

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.

XLSN Storage heater - Principle of operation

Your XLSN heater consists of a core of high density heat
storage bricks surrounded by a carefully designed insulating case.
During off-peak periods elements within the brick core heat up the
bricks to a temperature level determined by the setting you select
using the input control knob and the prevailing weather conditions.

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 insuffi cient the
output of the heater and thus the room temperature may
be increased by means of the Output Control. This control
operates a damper fl ap 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 fl ap 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 temperature of the room at the end of the charge period, as measured by the heater’s built­in room temperature sensor.

With the Output Control Knob set to minimum (fully anticlockwise) for domestic use, or maximum (fully clockwise) for commercial
applications, the Input Control Knob should initially be set at the mid point position. During the day following the fi rst charge period
the comfort level provided by the heater should be noted. If it is felt that the level of heating is either too high or too low, then the
Input Control Knob should be adjusted up or down as appropriate before the next charge period. This process should be repeated
each day until the most acceptable conditions are attained. The Input Control knob should then be left at this setting, and the heater
will automatically vary the charge taken in during subsequent charge periods to make the most effective use of off-peak electricity to
provide the selected level of comfort at the end of each charge period.

In the Autumn and Spring a lower setting of the Input Control Knob should be suffi cient, the actual setting required being infl uenced
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 fl ow 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.