Dimplex Charlotte CRT20AB, Quick Start Manual

Installation.
Ensure that all packing items are removed (read any warning labels carefully).
Retain all packing for possible future use, in the event of moving or returning the 
appliance to your supplier.

To install the appliance;
1. Remove the fi replace grate, ashpan etc.
2. The ashbed grate should be stored away for possible future use.
3. Clean the hearth of any ash residue or dust etc.
At the rear of the appliance, two adjustable supports are provided for levelling, where the base 
of the fi replace opening is raised above the level of the hearth.
You are now ready to install the electric fi re into your fi replace.
Make sure the unit is switched 

OFF.

Hold the fi re by the sides of surround and gently manoeuvre into position. Plug the fi re into a 
13amp/240 volt outlet. Ensure that the supply cable exits at the front of the fi re, at the right or 
left hand corner to suit your supply socket location and is not trapped under the fi re such that it 
might cause it to be damaged.

Before using the manual controls fi rstly fi ll the water tank (See ‘Maintenance’, ‘Filling the 
water tank’).

Manual Controls.

The Opti-myst Manual controls are located beneath the hinged canopy. Raise the canopy to 
access the controls. (See Fig.2 for Manual Control lay out)

Switch ‘A’:- Controls the electricity supply to the Fire.
Note: This switch must be in the ‘ON’ ( 

I 

) position for the Fire to operate with or without heat 

when activated. Although the lamps will operate immediately it will take a further 30 seconds 
before the fl ame and smoke effect starts.

Switch ‘B’:- This will give 1kW of heat
(Switch ‘A’ needs to be in the ‘ON’ ( 

I 

) position for Switch ‘B’ to work)

Switch ‘C’:- This will give 2kW of heat
(Switches ‘A & B’ need to be in the ‘ON’ ( 

I 

) position for Switch ‘C’ to work)

Control Knob ‘D’:- Controls the intensity of the fl ame and smoke effect. 

Turning the control knob Clockwise increases the intensity of fl ame and smoke effect, 
turning the control knob Anti Clockwise will decrease the intensity of fl ame and smoke 
effect.

When the water is empty the main lamps go out. See instructions under ‘Maintenance’, ‘Filling 
the water tank’. When this procedure is complete, the main lamps will illuminate but it will take 
30 seconds before the fl ames return. 
 

Thermal safety cut-out

A thermal safety cut-out is incorporated in the fan heater to prevent damage due to overheating. 
This can happen if the heat outlet was restricted in any way or if the chimney fl ue has not been 
blocked off effectively. If the cut-out operates, unplug the heater from the socket outlet and allow 
approximately 10 minutes before reconnecting. Before switching the heater back on remove any 
obstruction that may be restricting the heat outlet, then continue normal operation.

Caution:

 In order to aviod hazard due to inadvertent resetting of the thermal cutout, this 

appliance must not be supplied through an external switching device, such as a timer, or 
connected to a switch that is regularly switched on and off by the utility.

Tips for using your appliance.

1. Only pull out the drawer when its time to refi ll the water tank or change a lamp, otherwise it 
may lead to excess water in the sump and reduced fl ame effect. If this happens empty the water 
from the sump as instructed under ‘Maintenance’.        
2. With the fl ame setting on minimum the unit will use approximately 40ml of water per hour and 
will last 3 times as long than when it is at maximum fl ame setting. 
3. Do not tilt or move the fi re while there is water in the tank or sump.
4. Make sure that the fi re is on a level fl oor.
5. The fl ame control knob ‘D’ Fig.2 may be turned up or down to give a more realistic effect. 
6. Sometimes the fl ames appear more real when the fl ame control knob is turned down.
7. Give the fl ame generator some time to react to changes you may make on the fl ame control 
knob.

Maintenance
WARNING: ALWAYS DISCONNECT FROM THE POWER SUPPLY BEFORE ATTEMPTING 

ANY MAINTENANCE

Changing lamps.

If a large amount of the smoke appears grey or colourless it may be that one or more lamps 
have failed. 
You can check for lamp failure as follows.
1. Leaving the fl ame effect on, gently pull the drawer fully out by the tab. (See Fig.3)
2. View the lamps from a distance in front of the fi re and observe which lamp needs to be 
changed.
3. Put Switch ‘A’ in the ‘OFF’ position, and unplug the fi re from the mains.
4. Leave the appliance for 20 minutes to allow the lamps to cool down before removing them.
5. Remove the water tank by lifting upwards and place in a sink.
6. Remove the sump as described in the Cleaning Section.
7. Remove the defective lamp, by gently lifting vertically and disengaging the pins from the 
lamp holder, (See Fig.4 and 5). Replace with a Dimplex Opti-myst, 12V, 50W, Gu5.3 base, 8º 
beam angle, coloured lamp. (Purchased from www.dimplex.co.uk under the section ‘After Sales 
Service’, details of how to purchase the lamps are contained therein.)
8. Carefully insert the two pins of the new lamp into the two holes in the lamp holder. Push fi rmly 
in place. (See Fig.4 and 5). 
9. Replace the Sump and water tank and carefully close the drawer.
10. Switch on.

Model: Charlotte CRT20BR (Brass Inset), Charlotte CRT20AB (Antique Brass) & Brookline BKL20

IMPORTANT: THESE INSTRUCTIONS SHOULD BE READ CAREFULLY AND RETAINED FOR FUTURE REFERENCE

Important Safety Advice: 

When using electrical appliances, basic precautions should always 
be followed to reduce the risk of fi re, electrical shock and injury to 
persons, including the following:
If the appliance is damaged, check with the supplier before 
installation and operation.
Do not use outdoors.
Do not use in the immediate surroundings of a bath, shower or 
swimming pool.
Do not locate the heater immediately below a fi xed socket outlet or 
connection box.
This appliance is not intended for use by children or other persons 
without assistance or supervision if their physical, sensory or 
mental capabilities prevent them from using it safely. Children 
should be supervised to ensure that they do not play with the 
appliance.
Do not use this heater in series with a thermal control, a program 
controller, a timer or any other device that switches on the 
heat automatically, since a fi re risk exists when the heater is 
accidentally covered or displaced.
Ensure that furniture, curtains or other combustible material are 
positioned no closer than 1 metre from the heater.
In the event of a fault unplug the heater.
Unplug the heater when not required for long periods.
Although this heater complies with safety standards, we do not 
recommend its use on deep pile carpets or on long hair type of 
rugs.
The appliance must be positioned so that the plug is accessible.
If the supply cord is damaged it must be replaced by the 
manufacturer or service agent or a similarly qualifi ed person in 
order to avoid a hazard.
Keep the supply cord away from the front of the heater.
WARNING: In order to avoid overheating, do not cover the heater. 
Do not place material or garments on the heater, or obstruct the air 
circulation around the heater.

The heater carries a DO NOT COVER warning indicating that the it 
must not be covered

Dimplex Opti-myst Inset Fires

General.

Unpack the heater carefully and retain the packaging for possible future use, in the event of 
moving or returning the fi re to your supplier.    
The fi re incorporates a fl ame effect, which can be used with or without heating, so that the 
comforting effect may be enjoyed at any time of the year. Using the fl ame effect on its own only 
requires little electricity.
The heater is designed for use inset into a 407mm (16”) or 457mm (18”) wide by 559mm (22”) 
high fi replace opening  or freestanding - see also section ‘Installation Instructions’.
Before connecting the heater check that the supply voltage is the same as that stated on the 
heater. 
Please note: Used in an environment where background noise is very low, it may be possible to 
hear a sound which is related to the operation of the fl ame effect. This is normal and should not 
be a cause for concern. 

Electrical connection.
WARNING – THIS APPLIANCE MUST BE EARTHED.

This heater must be used on an AC ~ supply only and the voltage marked on the heater must 
correspond to the supply voltage.
Before switching on, please read the safety warnings and operating instructions.

PLEASE RETAIN THIS USER’S GUIDE FOR FUTURE REFERENCE
Do not put Opti-myst plastic components into a dishwasher.
Only slide out the drawer when the water tank needs to be fi lled or a lamp needs to 
be changed otherwise you will inadvertently alter the water level and the fl ame effect 
operation.
Only use fi ltered tap water in this appliance.
Always ensure that the appliance is sitting on a level fl oor.
If you intend not using the appliance for longer than 2 weeks, drain the water from sump 
and water tank and dry the sump.
Once installed, never move this appliance or lay on its back, without draining the water 
from sump and water tank.
The water tank, sump, sump lid, tank cap and air fi lters must be cleaned once every two 
weeks, particularly in hard water areas

.

The appliance should never be operated if the lamps are not working. 
The lamps should be regularly inspected as described under ‘Maintenance’ and 
‘Changing lamps’.

Installation Instructions

Before installing this appliance, we recommend that;
1. You have your chimney cleaned by a competent chimney sweep.
2. You block off the chimney fl ue. 
This procedure is important for the effi cient operation of the heating unit and will also reduce 
heat loss up the chimney.