Dimplex CXL12N, CXL18N, CXL24N Operating 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 and Convector 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 0845 600 5111.

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 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

(85911 Iss. 3)

Models CXL12N, CXL18N and CXL24N

Your Dimplex CXLN combined storage and convector heater enables you to take advantage of cheap off peak electricity to provide
the bulk of your heating requirements, with the added flexibility of a built-in, thermostatically controlled convector heater. This allows
you to provide top-up heat, for example, in very cold weather when the storage heater may not have sufficient stored heat in reserve
later in the day for providing full comfort conditions. These operating instructions assume that the correct size of storage heaters have
been selected to cater for the heating requirements of the room.

STORAGE HEATER OPERATION

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.

CXLN Storage heater section - Principle of operation

The storage heater section of the CXLN 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.

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 colder weather the heater should be set to take a high charge, the control being set 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.