Atherton ATH20 Dimplex Opti Myst Electric Inset Fire Instruction Manual

June 15, 2024
Dimplex

OPERATING
INSTRUCTION MANUAL

Dimplex Opti-myst Electric Inset Fire
Models: Atherton ATH20 / Bellemont BLL20
Flagstaff FLG20 / Pomona POM20

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

This product is only suitable for well insulated rooms or occasional use.

This product complies with all the required Product Safety, Electromagnetic Compatibility and Environmental Standards. This product is fully compliant with the LVD, EMC, RoHS and Eco Design Directives.
08/52850/0 ISSUE 7 OCN 11933

CAUTION: FAILURE TO FOLLOW THESE INSTRUCTIONS MAY CAUSE INJURY AND/OR DAMAGE AND MAY INVALIDATE YOUR GUARANTEE

Important Safety Advice

When using electrical appliances, basic precautions should always be followed to reduce the risk of fire, 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 this heater if it has been dropped.
  • Do not use if there are visible signs of damage to the heater. Do not use outdoors.
  • Do not use in the immediate surroundings of a bath, shower or swimming pool.
  • Do not locate the appliance immediately below a fixed socket outlet or connection box.
  • Use this heater on a horizontal and stable surface, or fix it to the wall, as applicable.

WARNING: Do not use this heater in a small rooms when they are occupied by persons not capable of leaving the room on their own, unless constant supervision is provided.
WARNING: To reduce the risk of fire, keep textiles, curtains, or any other flammable material a minimum distance of 1m from the air outlet
WARNING: This heater must not be used for anything other than normal domestic household purposes in the country where it was purchased from a recognised commercial retailer.
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 understanding the hazards involved. Children aged from 3 years and less than 8 years shall not plug in, regulate and clean the appliance or perform user maintenance.

WARNING: This appliance must be earthed.
The use of an extension lead or multi-plug adaptor is not advised when connecting this product to the mains. Connection through these devices could lead to a risk of overloading, overheating and even fire at the extension lead or adaptor due to inadequate connection quality. This heater must be used on an ~alternating current supply (~) only and the voltage marked on the heater must correspond to the supply voltage. Do not use this appliance in series with a thermal control, a program controller, a timer or any other device that switches on the heat automatically, since a fire risk exists when the appliance is accidentally covered or displaced. DO NOT use the heater on deep pile carpets or the long hair type of rugs, or less than 750mm (30″) away from any overhanging surface. Keep combustible materials such as drapes and other furnishings clear from the front, sides and rear of the heater. Do not use heater to dry your laundry.
In the event of a fault unplug the appliance. Unplug the appliance when not required for long periods. 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 qualified person in order to avoid a hazard. Keep the supply cord away from the front of the appliance.

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 instruction can be found at www.dimplex.co.uk
WARNING: In order to avoid overheating, do not cover the appliance. Do not place material
or garments on the appliance, or obstruct the air circulation around the appliance, for instance by curtains or furniture, as this could cause overheating and a fire risk. The heater carries the warning symbol indicating that it must not be covered.
WARNING: In order to avoid a hazard due to inadvertent resetting of the thermal cut-out, this appliance must not be supplied through an external switching device, such as a timer, or connected to a circuit that is regularly switched on and off by the utility.

Dimplex Opti-myst Inset Fire
Models: Atherton ATH20 / Bellemont BLL20 / Flagstaff FLG20 / Pomona POM20
Thank you for choosing a Dimplex electric fire

General Information

The fire incorporates a flame effect, which can be used with or without heating, so that the comforting effect may be enjoyed at any time of the year. A fan heater can provide heating in cold weather. A distance of 1 metre (3 feet) must be maintained between the front of the heater and any surrounding furniture, overhanging curtains or other obstructions.
To reduce heat loss and to prevent any chimney up draft affecting the operation of your inset fire we recommend they the chimney flue is sealed off. Always ensure that the appliance is sitting on a level surface. Before connecting the appliance, check that the supply voltage is the same as that stated on the appliance.
Only use filtered water in this appliance. Once installed, never move this appliance or lay it on its back, without draining the water from sump and water tank. The water tank, sump, sump lid, tank cap and air filters must be cleaned once every week, particularly in hard water areas. If you intend not using the appliance for longer than a week, drain the water from sump and water tank and dry the sump.

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 flame effect. 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 in order to control harmful or unwanted organisms. This conforms with the latest relevant ISO standard. Do not drink the water from the sump or from the water tank(s)

Technical Information
Model No: ATH20, BLL20, FLG20, POM20

Heat Output| PNom| 230V| 240V|
---|---|---|---|---
Nominal Heat Output| Pmin| 1.8| 2| kW
Minimum Heat Output| Pmax| 0.9| 1| kW
Maximum Continuous Heat Output| | 1.8| 2| kW
Auxiliary Electricity Consumption| PNom| 0.45| 0.48| W

Auxiliary Electricity Consumption

In Standby Mode PNom 0.45 0.48 W

Installation Instructions

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

Before installing this appliance in an existing chimney, we recommend that;

  1. You have your chimney cleaned by a competent chimney sweep.
  2. You block off the chimney flue.

This procedure is important for the efficient operation of the heating unit and will also reduce heat loss up the chimney.
Ensure that all packing items are removed (read any warning labels carefully). Retain all packing for possible future use e.g. in the event of moving or returning the appliance to your supplier.

Installing the Appliance;

  1. Clean the area where the fire will be installed e.g remove ash residue from an existing fireplace.
  2. Hold the fire by the sides of surround and gently manoeuvre into position.
  3. Plug the fire into a 13amp/240 volt outlet. Ensure that the supply cable is not trapped under the fire such that it might cause it to be damaged.
  4. Ensure that the draft excluder (rubber strip) is fitted to the channel on the base of the product.

Connecting the Transducer

  1. Gently lift out the fuelbed and carefully set aside. (Fig 3)
  2. Remove the water tank by lifting upwards and outwards. (Fig 4)
  3. Remove the nozzle by unclipping and lifting upwards and outwards. (Fig 5)
  4. The transducer will be inside the sump. Remove from its bag.
  5. Place the Transducer unit into the sump and make the connection.
  6. Locate the tab on the Transducer unit into the moulded recess in the base of the sump (Fig 6)
  7. Ensure that the cable does not obstruct the Transducer disc. To prevent the cable becoming pinched between the nozzle and the sump, place the cable in the slot in the wall of the sump. (Fig 7)

Filling the Water Tank

  1. Gently lift out the fuelbed and carefully set aside.
  2. Remove the water tank by lifting upwards and outwards.
  3. Place the water tank in sink and remove cap, Anti-clockwise to open. (Fig 8)
  4. Fill tank with filtered tap water only. This is necessary to prolong the life of the flame and smoke producing unit. The water should be filtered through a conventional domestic water filter unit and the filter should be replaced regularly.
  5. Screw the cap back on, do not over tighten.
  6. Return the tank to the sump, with the tank cap facing down
  7. Gently place the fuelbed back into position.

When the water tank is empty, the flame and smoke effect shuts off, you will hear 2 audible beeps and the digital display will display

Operating The Product

WARNING: FAILURE TO FOLLOW THESE OPERATING INSTRUCTIONS MAY RESULT IN INJURY AND/OR DAMAGE.

Manual Controls
The manual controls are located beneath the hinged flap at the top of the product. (Fig 2)
is the on/standby button. Press it once to turn on the product. Press it again to turn off the product. When turned on a ‘beep’ will sound and the digital display will show followed by the current room temperature. The display will then turn off. The fuelbed will light up. Be careful not to look directly into the fuelbed as the LED lights are very bright. It will take a approximatly 45 seconds before the flame effect starts.
is the Mode button.
Press it once and you will be in the options. The display will show the current setting. Using the and buttons you can turn the heat on at the LOW or HIGH setting and turn the heat OFF. You will hear two ‘beeps’ for LOW heat setting, three ‘beeps’ for HIGH heat setting and one ‘beep’ when the heat is turned off.
Press it a second time and you will be in the temperature set mode – -. The display will show the current room temperature and then the set point temperature. Using the and buttons you can adjust the set point temperature up and down. Note: if the set point temperature is below the room temperature the heat function will not operate. The temperature range is from 15-35°C
Press it a third time and you will be in the Fire mode. The display will show followed by the current fire effect setting. There are six fire settings. Using the and buttons you can adjust the height of the flame effect.

Press M Display Function Press + or –
Once Controls the fan
heater Off  Low High
Twice Thermostat From 15 °C
Three times Flame intensity From F1 (low)

Remote control

The remote control is supplied with a battery already in place. Simply pull on the clear plastic tab on the back of the remote control to enable the battery.

  • is the on/standby button. Press it once to turn on the product. Press it again to turn off the product. When turned on you will hear on ‘beep’ and the digital display will show – – followed by displaying the current room temperature. The display will then turn off. The main LED lights will activate. Be careful not to look directly into the LED’s. These are very bright. Although the main lights operate immediately it will take a further 45 seconds before the flame effect starts.

  • Press once to activate – – heat setting. Press it again to activate – – heat setting.
    If you continue to press this button you will cycle through the LOW and HIGH heat settings. You will heat two ‘beeps’ for LOW heat setting and three ‘beeps’ for HIGH heat setting.

  • Press once to turn off the heat. You will hear one ‘beep’

  • Press the button to display the current room temperature followed by the current set point temperature

  • Press the and buttons to adjust your set point temperature. Note: if the set point temperature is below the room temperature, the heat function will not operate. The temperature range is from 15 – 35°C

  • Press to increase the setting.

  • Press to decrease the setting.

Setting the Thermostat

Plug in the product and press to turn it on. Press the button twice to enter the temperature set mode . The current room temperature will be displayed (e.g. r23C) followed by the current set point room temperature (e.g. 26C). Press the and buttons to select your set point room temperature. Allow the display to turn off. Press the button once to enter the Heat option. Press the and buttons to select either or heat output. The heater will turn on when your set point room temperature is higher than the room temperature.

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 a 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.

Getting the Desired Flame Effect

  1. Using the manual controls or the remote control choose a setting between F1 and F6.
    F1 being the lowest setting and F6 being the highest setting.

  2. Generally the flames appear more realistic when the flame control is turned down.

  3. Give the flame generator time to react to changes you may make.

  4. The fire will use less water if the flame effect is set to a lower level.

  5. Do not tilt or move the fire while there is water in the tank or sump.

  6. Make sure that the fire is on a level floor.

WARNING: KEEP BATTERIES OUT OF REACH OF CHILDREN

  1. Swallowing may lead to serious injury in as little as 2 hours or death, due to chemical burns and potential perforation of the oesophagus.
  2. If you think batteries might have been swallowed or placed inside any part of the body seek immediate medical attention
  3. Examine devices and make sure the battery compartment is correctly secured, e.g. that the screw or other mechanical fastener is tightened. Do not use if the compartment is not secure.
  4. Dispose of used button batteries immediately and safely. Flat batteries can still be dangerous.

WARNING
KEEP OUT OF REACH OF CHILDREN
Swallowing can lead to chemical burns, perforation of soft tissue, and death. Severe burns can occur within 2 hours of ingestion. Seek medical attention immediately.

CAUTION: No obvious symptoms
Unfortunately, it is not obvious when a button or coin battery is stuck in a child’s oesophagus (food pipe).
There are no specific symptoms associated with this. The child might:

  • cough, gag or drool a lot;
  • appear to have a stomach upset or a virus;
  • be sick;
  • point to their throat or stomach;
  • have a pain in their abdomen, chest or throat;
  • be tired or lethargic;
  • be quieter or more clingy than usual or otherwise “not themselves”;
  • lose their appetite or have a reduced appetite; and
  • not want to eat solid food/be unable to eat solid food.

These sorts of symptoms vary or fluctuate, with the pain increasing and then subsiding.
A specific symptom to button and coin battery ingestion is vomiting fresh (bright red) blood. If the child does this seek immediate medical help.
The lack of clear symptoms is why it is important to be vigilant with “flat” or spare button or coin batteries in the home and the products that contain them.

Maintenance

General Tips
Only use filtered tap water in this appliance.
Always ensure that the appliance is sitting on a level surface.
If you intend not using the appliance for longer than a week, remove and empty the sump and water tank.
Once installed, never move this appliance or lay on its back, without draining the water from sump and water tank.

Cleaning
Warning – Always press  to turn off the product and disconnect the product from the power supply before cleaning the fire. Leave the appliance for 10 minutes to allow the product to cool down.
We recommend cleaning the following components once every week, particularly in hard water areas:
Water Tank, Sump, Nozzle, Tank cap and seal, Air filter.
For general cleaning use a soft clean duster – never use abrasive cleaners.
To remove any accumulation of dust or fluff, 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 center rubber seal.
  3. Put a small quantity of washing up liquid into the tank, refit the cap and shake well, rinse out until all traces of washing up liquid are gone.
  4. Refill with filtered tap water only, replace the cap, do not over tighten.

Sump
Press to put the product into standby
Gently lift out the fuelbed and place carefully on the ground.
Remove the water tank by lifting upwards.
Remove the sump lid, this allows the sump to be lifted completely from its location. (Fig 5) Gently lift up the sump, taking care to keep level so as not to spill any water. Sit the assembly in the sink.
Carefully tilt so that the liquid drains out of the sump.
Put a small amount of washing up liquid into the sump, and using the supplied brush, gently clean all surfaces including the metal disc (Fig 9)
When cleaned, thoroughly rinse the sump with clean water. Clean the outlet surface of the sump lid with the brush and flush out thoroughly with water.
Reverse the above steps to reassemble.

Air Filter

  1. Press on the remote control or on the product to turn it off
  2. Gently lift off the fuelbed and set aside
  3. Remove the tank and place in a sink with the cap facing upwards.
  4. Gently slide up the air filter (Fig. 10)
  5. Gently rinse with water in the sink and dry with fabric towel before returning.
  6. Replace the filter making sure that the course black filter is in contact with the plastic holder7. Replace the tank.
  7. Replace the fuelbed.
  8. Press to turn on the product

General Cleaning and Maintenance
The outside can be cleaned by wiping it over with a soft damp cloth and then dried. Do not use abrasive cleaning powders or furniture polish, as this can damage the surface finish.
CAUTION: Assembly, installation and repair of this heater must be carried out by Dimplex or its authorised agent.
CAUTION: We recommend that you arrange for this heater to be checked annually for safety by a qualified electrician.

Additional Information

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 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 affected by this guarantee.
The transducer is a consumable item and may need to be replaced through time, depending on its usage. Replacement transducers can be purchased from our website http://spares.dimplex.co.uk.
The transducer has a 12 month warranty period.
CAUTION: Do not use if the heater’s mains power lead is damaged. Such use may cause a hazard. If damaged, the mains power lead must be replaced by the manufacturer or its authorised dealer.
Should you require after sales information or assistance with this product please go to www.dimplex.co.uk and select “Customer Support” or ring our help desk on 0344 879 3588 (UK) or 01 8428 222 (R. O. I.). Spare parts are also available on the web site. Please retain your receipt as proof of purchase.

Recycling
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 area.

Patent / Patent Application
Products within the Optimyst range are protected by one or more of the following patents and patent applications:
Great Britain GB2460259B, GB2475794B, GB2418014, EP2029941, GB2436212, GB2402206B United States US8413358, US8136276, US7967690, US8574086
Russia RU2434181 European EP2029941, EP2315976, EP1787063 (A1), EP2388527 China CN101883953A, CN102105746A, CN101057105 (A), CN101438104  Australia AU2009248743A1, AU2007224634 Canada CA2725214, CA2579444, CA2645939 South Africa ZA2008/08702 Mexico MX2008011712 South Korea KR101364191 Japan JP5281417, JP5496291 Brazil BRP10708894 India 4122/KOLNP/2008 New Zealand NZ571900

Atherton ATH20 Dimplex Opti Myst Electric Inset Fire - Product Overview
1 Atherton ATH20 Dimplex
Opti Myst Electric Inset Fire - Product Overview 2

Atherton ATH20 Dimplex Opti Myst Electric Inset Fire - Product Overview
3 Atherton ATH20 Dimplex
Opti Myst Electric Inset Fire - Product Overview 4 ![Atherton ATH20 Dimplex Opti Myst Electric Inset Fire

Tel: 0344 879 3588
Republic of Ireland Tel: 01 8428 222
www.dimplex.co.uk
Dimplex Millbrook House, Grange Drive, Hedge End, Southampton, SO30 2DF
© Glen Dimplex Heating and Ventilation. All rights reserved. Material contained in this publication may not be reproduced in whole or in part,
without prior permission in writing of Glen Dimplex Heating and Ventilation.

References

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