OPTIMYST WALL ENGINE
OMWFC20
RTOPW20
PEM20
08/51462/0 Issue 5
The 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
Opti-myst wall engine
Model: OMWFC20 - RTOPW20 - PEM20
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 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 xed socket outlet or connection box.
This appliance can be used by children aged 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 use of the appliance in a safe way and understand the hazards involved. Children shall
not play with the appliance. Cleaning and user maintenance shall not be made by children without supervision.
Children of less than 3 years should be kept away unless continuously supervised.
Children aged from 3 years and less than 8 years shall only switch on/off the appliance provided that it has been
placed or installed in its intended normal operating position and they have been given supervision or instruction
concerning use of the appliance in a safe way and understand the hazards involved. Children aged from 3
yeards and less than 8 years shall not plug in, regulate and clean the appliance or perform user maintenance.
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.
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 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 qualied
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.
General.
Unpack the heater carefully and retain the packaging for possible future use, in the event of moving or returning the re to
your supplier.
The re incorporates a ame eect, which can be used with or without heating, so that the comforting eect may be enjoyed
at any time of the year. Using the ame eect without selecting heat requires little electric power.
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 ame eect. This is normal and should not be a cause for concern.
The sump and the water tank in this product are treated with a biocidal product, Silver Biocide. This conforms with the latest
relevant ISO standard
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
Only use ltered tap water in this appliance.
Always ensure that the appliance is xed to the wall in a level position.
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 commissioned, 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 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.
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; (See Fig1)
1. Remove wall bracket from the back of the appliance, by removing the 2 screws that the wall bracket is xed with.
From the base of the re chassis a minimum distance from the oor of 300mm - 600mm and minimum distance from the wall
of 625mm is highly recommended.
2. Fix the wall bracket to the wall making sure it is level, using the wall plugs and screws supplied for block walls.
3. Hang the appliance o the xed wall bracket. Rotate the safety xing bracket on the base of the product so that the xing
hole is exposed. Mark this hole and remove the appliance from the wall. Fix plug to the wall in the marked position.
4. Hang the appliance back on the wall xing bracket and x the appliance in place using the screw supplied through the
safety xing bracket.
Make sure the unit is switched OFF.
Plug the re into a 13amp/240 volt outlet.
Before using the manual controls rstly ll the water tank (See ‘Maintenance’, ‘Filling the water tank’).
Manual Controls.
The Opti-myst Manual controls are located on the base of the appliance. (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.
Switch ‘B’:- Press once to turn on the ame eect. This will be indicated by an audible “beep”. Although the main lights
operate immediately it will take a further 30 seconds before the ame eect starts.
Press again to give ame eect and half heat. This will be indicated by two “beeps”.
Press again to give ame eect and full heat. This will be indicated by three “beeps”.
Press again to return to ame eect only. This will be indicated by one “beep”.
Press to put re in to standby mode. This will be indicated by one “beep”.
Control Knob ‘C’:- Controls the Thermostat setting.
Turning the control knob towards you will decrease the temperature setting, turning the control knob away from you
will increase the temperature setting.
Control Knob ‘D’:- Controls the intensity of the ame and smoke eect when the heater has been activated.
Turning the control knob towards you decreases the intensity of the ame and smoke eect. Turning the control
knob away from you will increase the ame and smoke eect.
When the water tank 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 ames return.
Setting the Thermostat
Plug in and switch on the re to the full heat setting. Turn the Control Knob ‘C’ fully away from you (max temperature setting)
to warm the room rapidly. When the room temperature has reached the desired level, turn the thermostat knob back slowly
until the thermostat just clicks o. The heater will then maintain the room temperature at the chosen level.
Note: Should your heater fail to come on when the thermostat is at a low setting, this may be due to the room temperature
being higher then the thermostat setting
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. 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 avoid 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 o by the
utility.
Tips for using your appliance.
1. With the ame and smoke 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 ame setting.
2. Do not tilt or move the re while there is water in the tank or sump.
3. Make sure that the re is xed level on the wall.
4. The ame control knob ‘D’ Fig.2 may be turned up or down to give a more realistic eect.
5. Sometimes the ames appear more real when the ame control knob is turned down to a low setting.
6. Give the ame generator some time to react to changes you may make on the 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 ame eect on, lift out the fuelbed and water tank. (See Fig.3) and lift out the nozzle (See Fig.4)
2. View the lamps from a distance in front of the re and observe which lamp needs to be changed.
3. Press switch ‘A’ to o (0) position (See Fig.2), and unplug the 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 4a).
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 lamp rmly in place. (See Fig.4 and
4a).
9. Replace the nozzle, water tank and fuelbed.
10. Switch on.
Filling the water tank.
When the water tank is empty, the ame and smoke eect shuts o and you will hear 2 audible ‘beeps,, follow these steps.
1. Press Switch ‘A’ to o position (0) (See Fig.2)
2. Gently lift out the fuelbed and place carefully on the ground. (See Fig.3)
3. Remove the water tank by lifting upwards and outwards.
4. Place the water tank in sink and remove cap, Anti-clockwise to open. (See Fig.5)
5. Fill tank with ltered tap water only. This is necessary to prolong the life of the ame and smoke producing unit.
The water should be ltered through a conventional domestic water lter unit and the lter should be replaced regularly.
6. Screw the cap back on, do not overtighten.
7. Return the tank to the sump, with the tank cap facing down and the at side of the tank facing outward.
8. Gently place the fuelbed back into position.
9. Press Switch ‘A’ to ‘ON’ ( I ) position (See Fig.2)
Cleaning.
WARNING – ALWAYS DISCONNECT FROM THE POWER SUPPLY BEFORE CLEANING THE HEATER.
We Recommend cleaning the following components once every 2 weeks, particularly in hard water areas:Water Tank, Sump, Nozzle, Tank cap and seal, Air lter.
For general cleaning use a soft clean duster – never use abrasive cleaners. To remove any accumulation of dust or u the soft
brush attachment of a vacuum cleaner should occasionally be used to clean the outlet grille of the fan heater.
Water tank
1. Remove water tank, as described earlier, put into sink and empty water.
2. Using the supplied brush gently rub the inside surfaces of the cap paying particular attention to the rubber ring in the outer
groove and the centre rubber seal.
3. Put a small quantity of washing up liquid and water into the tank, ret the cap and shake well, rinse out until all traces of
washing up liquid are gone.
4. Rell with ltered tap water only, replace the cap, do not overtighten.
Sump
1. Press Switch ‘A’ to the ‘OFF’ (0) position
2. Gently lift out the fuelbed and place carefully on the ground. (See Fig.3)
3. Remove the water tank by lifting upwards.
4. Disconnect the electrical connector, located on the right side of the sump. (See Fig.6) .
5. Release the right sump locking tabs by turning 90º, this allows the sump to be lifted completely from its location. (See Fig.6a)
6. Gently lift up the sump, taking care to keep level so as not to spill any water. Sit the assembly in the sink.
7. Release the left sump locking tabs by turning 90º, then lift o the Nozzle. (See Fig.4)
8. Remove the transducer and carefully tilt the sump as shown, so that the liquid drains out of the sump. (See Fig.8)
9. Put a small amount of washing up liquid into the sump, and using the supplied brush, gently clean all surfaces in the sump
and gently clean the transducer including the metal discs located in the top grooved surface. (See Fig.9)
10. When cleaned, thoroughly rinse the sump and transducer with clean water.
11. Clean the smoke outlet surface of the sump lid with the brush and ush out thoroughly with water. (See Fig.10)
12. Reverse the above steps to reassemble.
Air lter.
1. Press Switch ‘A’ to the ‘OFF’ (0) position (See Fig.2)
2. Gently lift out the fuelbed and place carefully on the ground. (See Fig.3)
3. Gently slide upwards the air lter out of its plastic holder. (See Fig.11)
4. Gently rinse with water in the sink and dry with fabric towel before returning.
5. Replace the lter making sure that the course black lter is facing the front of the re.
6. Replace the fuelbed.
7. Press Switch ‘A’ to the ‘ON’ ( I ) position (See Fig.2)
Remote Control Operation
On the control panel, Switch A (see Fig.2) must be in the ‘ON’ ( I ) position in order for the remote control to operate. There are 3
buttons on the remote control. (See Fig.7) To operate correctly the remote handset must be pointed towards the heater outlet.
(See Fig 12). The remote control functions are as follows:
Press once to turn on Flame eect only.
This will be indicated by one beep.
Press once to turn on Half heat and Flame eect.
This will be indicated by two beeps.
Press again to turn on Full heat and Flame eect.
This will be indicated by three beeps.
Standby
This will be indicated by one beep.
Recycling.
For electrical products sold within the European Community. At the end of the electrical products useful life it should
not be disposed of with household waste. Please recycle where facilities exist. Check with your Local Authority or
retailer for recycling advice in your country.
After Sales Service.
Your product is guaranteed for one year from the date of purchase. Within this period, we undertake to repair or exchange
this product free of charge (excluding lamps and transducer discs & subject to availability) provided it has been installed and
operated in accordance with these instructions. Your rights under this guarantee are additional to your statutory rights, which
in turn are not aected by this guarantee.
Should you require after sales information or assistance with this product please go to www.dimplex.co.uk where you will
nd our self help guide by clicking on “After Sales” or ring our help desk on 0844 879 3588 (UK) or 01 842 4833 (R. O. I.). Spare
parts are also available on the web site. Please retain your receipt as proof of purchase.
Patent / Patent Application
Products within the Optimyst range are protected by one or more of the following patents and patent applications:
Great Britain GB 2402206, GB 2460259, GB 2460453 , GB 2418014, GB 2465738, GB 2449925, GB 2465537 , GB 2455277 ,
GB1020534.2, GB1020537.5, GB1110987.3
United States US 7967690, US 2010299980, US 2011062250, US 2008028648, US 13/167,042
Russia RU2008140317
European EP 2029941, EP 2201301, EP 2315976, EP 1787063, EP07723217.1 , EP11170434.2, EP 11170435.9
China CN 101883953, CN 200980128666.2, CN 101057105, CN 101438104
Australia AU 2009248743, AU 2007224634
Canada CA 2725214, CA 2579444, CA 2645939
International Patent Application WO 2006027272
South Africa ZA 200808702
Mexico MX 2008011712
Korea KR 20080113235
Japan JP 2009529649
Brasil BR P10708894-9
India IN 4122/KOLNP/2008
New Zealand NZ 571900
Troubleshooting
Symptom Cause Corrective Action
The ame eect will
not start.
Mains plug is not plugged in.
Low water level.
Check plug is connected to wall socket correctly.
Check that the water tank is full and there is
water in the sump.
The ame eect is too
low.
Unpleasant smell when
unit is used.
The ame eect has
too much smoke.
Main lamps are not
working and there are
no ames or smoke.
Low voltage connector not connected properly.
(See Fig.6)
The Transducer Unit is not sitting correctly in
the sump
Flame eect control knob is set too low.
(See Fig.2)
The Metal Disc in the transducer might be dirty
(See Fig.12)
The wire from the Transducer Unit is sitting over
the metal disc
Dirty or stale water.
Using unltered tap water.
Flame eect setting is too high. Turn the ame eect Control knob C clockwise,
There is no water in the water tank Follow instructions under
Check that the connector is inserted correctly.
(See Fig.6)
Ensure the Transducer in sitting down into the
moulded recess in the sump
Increase level of ame by turning Control knob
‘D’ anti clockwise slowly. (See Fig.2)
Clean the Metal Disc with soft brush supplied.
(See Fig.12) See ‘Maintenance.’ for a step by step
procedure.
Direct the wire to the back of the sump and
make sure it sits into the side slot exiting the
sump.
Clean the unit as described under maintenance.
Use only ltered tap water.
about ¼ a turn, at a time. Give the ame
generator some time to adjust to the new
setting. (See Fig.2)
Maintenance, ‘Filling the water tank’.
Check the plug is connected to the wall socket
correctly and that Switch ‘A’ Fig. 2 is in the
‘ON’ ( I ) position.
Fig.1
Fig.2
Fig.4
Fig.3
Fig.4a
Fig.5
Fig.6
Fig.6a
Fig.8
Fig.7
Fig.9
Fig.10
Fig.11
Fig.12
Opti-myst is a trade mark of GDC Group Ltd.
DIMPLEX
MILLBROOK HOUSE
GRANGE DRIVE
HEDGE END
SOUTHAMPTON
SO30 2DF
TEL: 0844 879 3588
FAX: 0844 879 3583
WEBSITE: www.dimplex.co.uk
Republic of Ireland Tel. 01 8424833
[c] 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 of
Dimplex.
A division of GDC Group Ltd,
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