Dimplex CXLS24 User manual

Installation Instructions
Dimplex Ultra-Slim Storage and Convector Heaters
Twin Sensor Automatic Models CXLS12N, CXLS18N, CXLS24N
(85317 Iss. 16)
Bricks are in
packs of two.
The pack catalogue
number is XT 8300
CXLS12N - 12kWh
8 Bricks (4 Packs)
CXLS18N - 18kWh
12 Bricks (6 Packs)
CXLS24N - 24kWh
16 Bricks (8 Packs)
This product complies with the European Safety Standards EN60335-2-30 and the European Standard Electromagnetic Compatibility (EMC) EN55014, EN60555-2 and EN60555-3.
These cover the essential requirements of EEC Directives 2006/95/EC and 2004/108/EC
IMPORTANT - These instructions should be read carefully and retained for
future reference.
Note also the information given on the appliance.
The Installation must be carried out by trained personnel.•
A means for disconnection must be incorporated in the fixed wiring by a double pole switch•
with a contact separation of a minimum of 3mm and in accordance with the current IEE Wiring
Regulations.
The heater must not be installed immediately below a fixed socket outlet.•
The heater is not suitable for connection to a 30A ring circuit.•
Do not position the heater under windows where curtains can contact the heater casing.•
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.
Only heat resisting cable (minimum rating T85) should be used.•
If used in a bathroom the heater must be installed such that switches and other controls•
cannot be touched by a person in the bath or shower.
During any reassembly of the heater if a part of the thermal insulation shows damage or•
deterioration which may impair safety, it should be replaced with an identical part.
WARNING - In order to avoid overheating, do not cover the surfaces of the heater.•
Do not put clothes, fabrics or any other materials on the heaters.•
Do not place objects in contact with the heater.•
Do not position the heater where objects can come within 250mm (10”) of the top and 75mm•
(3”) of the sides of the heater.
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.•
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 the use of the appliance in a safe way and
understand the hazards involved. Children shall not play with the appliance.
Children less than 8 years of age should be kept away unless continuously supervised.•
IMPORTANT - Due to the newness of materials the heater will produce a smell for the first•
few days of operation. Rooms must be well ventilated and young children, caged birds or
people with respiratory complaints must not remain in proximity to the heater for the first 48
hours of the commissioning period.

1. Invert carton and lift carton off heater. Take care to ensure that staples
in carton !aps do not scratch surface of heater. Do not remove internal
packaging pieces at this stage.
Assembly of heater
2. Remove feet and accessories bag from corner "ttings (accessories bag
is located within one of the feet.)
3. Secure feet to base of the heater using two Taptite screws (provided)
for each foot. (On modules CXL12N/CXLS12N it would be necessary to
remove base corner packaging pieces to locate feet in position). Apply
end pressure whilst turning screws so that they form their own thread in
the plunged holes in the base.
4. Loosen hexagon head front panel securing screws, by 1-2 turns using
screwdriver through aperture in each end packaging piece.
Stand heater on its feet and remove all packaging pieces.
5. Position heater against wall in intended "nal position, taking
note of the minimum "xing dimensions given below. If "tted, the
Dimplex storage heater shelf should be "xed in accordance with
the instructions enclosed with the shelf.
Special instructions for !tting the heater to the wall.
6. Fitting on the top of carpet. If the heater is to stand on top of the carpet the following
course of action MUST be taken. Ensure that any carpet gripper (e.g. “Gripperod”) is
removed from the !nal positions of the storage heater feet. Ensure that the carpet AND
underlay completely cover the area under the feet so that they stand on a level surface.
If the underlay is particularly thick it is advisable to cut it away completely from under the
feet and for a suf!ciently wide area around the feet for them to rest !rmly through the
carpet onto the "oor.

7.Fitting directly on the "oor. If the !oor is carpeted then the carpet
may 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.
8. Having decided on the method of standing the heater on the !oor the
position of the wall bracket should be marked on the wall.
9. Remove wall "xing bracket from heater by removing the screws and
spacer bushes at each end.
11. Solid Brick/High Density Block Walls. (See step 12 if walls are of
low density block) These must be drilled and plugged with the No. 10 size
plastic inserts provided. The correct size of drill (8mm) should be used and
the hole should be drilled to a depth of 15mm greater than the length of the
plastic insert, so that the "xing is made below the plaster layer.
12. Low Density Block Walls. A specialised "xing, such as the Uni"x LB70.
should be employed following closely the manufacture’s instructions.
Panelled Internal Walls. Here it is best to locate the studding and use
No.10 size woodscrews. Where it is not possible to locate the studding
use type M5 Rawlplug INTERSETS on securely fastened plasterboard
panelling. For other wall panel materials the wall panel manufacturer should
be consulted for details of suitable wall "xing devices.
10. Four "xing positions must be chosen for the 24N, three
for the 18N and two for the 12N . Mark the positions for
the "xing holes - two at the extreme ends and the others
spaced evenly between them. Remove the bracket from
the wall, drill the holes in the positions marked, and insert
suitable "xings detailed in Steps 11 and 12. Secure the
wall bracket to the wall.

13. At this point determine which side of the heater off peak and on peak
supplies are to be connected. If off peak supply is to be connected from
the right hand end and on peak from left hand end proceed to next step.
If wiring of the building does not correspond with these cable entry points
then it will be necessary to secure the cable to the base of the rear of the
heater using the ties supplied in the "xing kit, ensure there is suf"cient
cable free to make connection easier later on.
14. Secure the heater to wall "xing bracket by replacing the two screws
and spacer bushes removed in step 11. The feet and wall mounting ar-
rangement are designed to accommodate skirting board sizes up to 25mm
(1”) thick. To avoid obstructing the air"ow to the rear of the heater the
following must be strictly adhered to:
(a) For skirtings higher than 100mm (4”) it will be necessary to position
the heater with the screws attached through the alternative "xing slots to
the front.
(b) For skirtings have a height in excess of 150mm (6”) it will be necessary
to reduce the height of the skirting to 150mm (6”) over the entire length of
the heater plus 25mm (1”) at either end.
15. Remove bottom front panel securing screws. These were loosened in
step 3 and should be easily unscrewed by hand.
16. Pull bottom of front panel forward to disengage the location pegs from
the side panels and clear it from bottom of heater.
17. Still holding bottom of front panel forward, lift upwards (1), to disengage
top edge of front panel from groove on heater top panel and remove front
panel from heater (2).
18. Remove the screw securing the convector controls bracket to the side
panel along with the spacer, nut and washer, taking care to ensure that
the retaining nut is not dropped

19. Remove the convector circuit mains block and insulation card from
the left side of the base panel. Unclip the wires running across the heater
below the inner front.
20. Remove screws retaining front inner skin.
21. Carefully lift the bottom of the front inner skin panel out of the retaining
!ange at the base of the heater, taking care not to damage the insulation,
hydraulic thermostat probe, heating elements and other vulnerable
components attached to this panel.
22. Remove the internal packing by sliding it up and off the elements, taking
care not to damage the insulation.
23. Remove one element to allow access for the back row of bricks. On the
CXL24N/CXLS24N remove the element to right of centre, on the CXL18N/
CXLS18N remove the central element and on the CXL12N/CXLS12N
remove the left hand element. Loosen the two screws securing the element
tails in the ceramic block, and lift the element up and out of the heater.
24. Position the bottom rear layer of bricks with the airway restrictions
coincident with the air slots in the base insulation slab. Push the bricks
"rmly to the back of the heater. Fit the top rear row of bricks, with the
airway restrictions uppermost.

25. Replace the element which had been removed by carefully passing
the ends through the base insulation slots into the terminal blocks below.
Position the insulator on the element end in contact with the terminal block
ceramic as shown, and tighten the connection screws. At this point check
that all element connections are tight. 26. Fit the front bricks with the airways facing inwards
27. Re-"t the front panel/insulation assembly, ensuring the bottom edge
of the panel is located behind the base !ange.
28. Make sure all screws removed in operation 20 are replaced
securely.
29. Replace the spacer nut, washer and screw removed in 18 and reconnect
the two quick connect terminals removed in 19.
30. Connect the off peak supply to the storage terminal block at the right
side of the base panel.
Replace the convector terminal block and insulation card at the left side
of the base panel, clip wires running across heater and connect peak
supply.
HEAT RESISTING CABLE MUST BE USED.
NOTE: ON NO ACCOUNT SHOULD SURPLUS CABLE BE STUFFED
INSIDE THE HEATER. Make sure clamp is tightening on outer sheath
of cable and not on individual conductors.
WARNING: THIS APPLIANCE MUST BE EARTHED. CHECK ALL
ELECTRICAL CONNECTIONS FOR TIGHTNESS.
ENSURE THAT CABLE CLAMP IS
SECURELY ATTACHED TO THE
CHASSIS OF THE HEATER.

31. Check that the damper mechanism within the heater functions freely,
by rotating the left hand control knob. Check also that the right hand (input)
knob rotates freely.
32. Select the convector heater load appropriate to your recommended
heating design scheme by, if necessary, disconnecting one convector
element by moving either the brown or mauve wire to the empty barrel on
the white terminal block on the internal baf!e.
Model
#CXL12N/CXLS12N
#CXL18N/CXLS18N
CXL24N/CXLS24N
Brown Wire
Still in Circuit
(Upper Element)
450W
450W
650W
Mauve Wire
Still in Circuit
(Lower Element)
450W
1000W
1350W
Both in
Circuit
900W
1450W
2000W
#Note: if the heater is situated underneath a shelf or overhand up to 250mm
high, then the brown wire should remain in circuit.
33. Holding the bottom edge if the front panel towards you, locate the top
edge of the front panel in the groove at the top of the heater and ensure
that the locating pegs on the rear !anges of the front panel are located in
the receiving holes in each side panel.
34. Push the bottom of the front panel towards the heater, such that the
bottom !ange locates under the base.
35. Replace the two front panel securing screws removed in operation 15. A small mirror
placed on the "oor under the heater will help location of the threaded holes in the base. These
may be screwed in by hand most of the way, but should then be tightened using an 8mm AF
socket or open ended spanner.

36. Ensuring the electricity supply is disconnected, connect the free end of
the mains cable to a suitable double-pole witch adjacent to the appliance
- reinstate the electricity supply.
NOTE: The double pole witch must have a contact separation at least
3mm in all poles.
Peak Circuit Diagram
CXL12N & 18N
CXLS12N & 18N
BROWN
BROWN
CUT-OUT
MAUVE
BLUEBLUE
BLUE
BROWN
MAUVE
BROWN
CONVECTOR
ELEMENT
CONVECTOR
ELEMENT
ELEMENT
SELECTOR
BLOCK
MAINS
BLOCK
‘L’
‘N’
SWITCH
NEON
AIR
SENSING
STAT
Peak Circuit Diagram
CXL24N
CXLS24N
BROWN
BROWN
CUT-OUT
MAUVE
BLUEBLUE
BLUE
BROWN
MAUVE
BROWN
CONVECTOR
ELEMENT
CONVECTOR
ELEMENT
ELEMENT
SELECTOR
BLOCK
MAINS
BLOCK
‘L’
SWITCH
NEON
AIR
SENSING
STAT
BROWN
BROWN
24
STAT
‘N’
© GDC Group 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 GDC Group Ltd, Millbrook House, Grange Drive, Hedge End, Southampton SO30 2DF
Dimplex,
Millbrook House,
Grange Drive,
Hedge End,
Southampton, SO30 2DF.
Customer Help Line: 0844 879 3588
Fax: [phone]
Email: [email protected]
Website: www.dimplex.co.uk