Dimplex OPTIMYST CAS400L, Information Manual

2

General Information

Only use filtered water in this appliance.

Always ensure that the appliance is sitting on a level surface.

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. 

If this product experiences a power surge for whatever reason the product may cut-out. This is a normal safety feature 

and the product will resume operation after 30 seconds.

Once installed, never move this appliance or lay on its back, without draining the water from sump and water tank.

If you intend not using the appliance for longer than 2 weeks, drain the water from sump and water tank and dry the 

sump.

The water tank, sump, sump lid, tank cap and air filters must be cleaned once every two weeks, particularly in hard 

water areas.

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

Installation Instructions

BEFORE YOU START

1.  Ensure that all packing items are removed (read any warning labels carefully) and retain all packing for possible 

future use e.g. in the event of moving house or returning the appliance to your supplier.

2.  Before connecting to the mains supply, check that the supply voltage is the same as that stated on the appliance.

INSTALLATION

This appliance has been designed to be housed in separately designed structures – e.g. furniture, fireplace surrounds etc.

To incorporate this appliance into another structure, it should be securely fitted, following these guidelines:

 ESSENTIAL VENTING

A suitable air vent is essential to ensure that air can circulate into the appliance - otherwise the Opti-myst flame 

effect will not operate correctly. A cavity of at least 100cm² is required for this air vent. This pathway for air must 

not be obstructed. For examples of air vents see (Fig 10) The air vent should be free from drafts.

3.  Construct an opening for the appliance LxWxH 390x205x170mm (+3-0mm)

4.  Ensure that there is sufficient room to thread through the mains cable

5.  A cavity of at least 100cm² is required to ensure air can circulate into the appliance. - See ESSENTIAL VENTING.

6.  Lower the appliance into the opening.

7.  Remove the water sump, to enable access to the screw holes.

8.  Screw the appliance into the structure by using suitable screws, not supplied.

Filling the Water Tank

1.  Place Water Tank in sink and remove cap (turn anti-clockwise to open)

2.  Fill Water Tank with 

filtered tap water only

. This is necessary to prolong the life of the flame and smoke effect 

producing unit. The water should be filtered through a conventional domestic water filter unit and the filter should 

be replaced regularly. Distilled water must 

not

 be used.

3.  Screw the cap back on – 

do not overtighten

.

4.  Place the Water Tank in the Sump, with the tank cap facing down and the flat side of the tank facing outward 

5.  Place the Fuelbed on top of the Water Tank

Connect the power cable to the appropriate power connector at the back of the appliance and 

Plug the power cable into a 13amp/240volt outlet. The appliance is now ready for use.