8
This Appliance does not normally require purpose provided ventilation. However, a second appliance
operating within the same room or space must be taken into consideration when assessing ventilation.
When commissioning the appliance spillage is detected, then amongst other problems there may be
insufficient natural ventilation for correct operation of the flue. If spillage is detected with windows
closed, but the appliance does not spill with the windows open, this demonstrates a lack of natural
ventilation.
If spillage is still detected with the windows open, the flue is at fault. Installation of an air brick is the
best solution to lack of ventilation.
Any ventilation fitted must comply with BS 5871 part 2 and BS 5440 part 2.
Air Vents fitted under or within the immediate vicinity of the appliance must not be used as adverse
effects to the operation of the Flame Safety Device (FSD) may occur. Spillage detected during
commissioning is almost always a result of poor flue performance that cannot be corrected by any
amount of ventilation.
For Republic of Ireland ventilation may be required, see IS 813, ICP3, IS 327, and any other rules in force.
The fireplace opening should be inspected and repairs made where necessary.
The dimensional requirements for debris collection space and spigot clearances must be met. See
diagram below.
This appliance requires a natural draught flue system which may be one of the following;
225mm x 225mm (9in x 9in) brick or stone
125mm (5”) Minimum diameter flexible flue liner conforming to BSEN 1856-2
125mm (5”) minimum diameter twin wall flue conforming to BSEN 1856-1: 2009
A minimum of 600mm flue height from the appliance is required before any bend in the flue, no bend
greater than 45° must be used.
The area immediately above the outlet must form a smooth path into the flue.
Any existing draught device situated under the fireplace must be sealed off. The opening area must be
non-combustible, for low height properties such as bungalows a spinning cowl or similar device may be
recommended to help induce the correct pull from the flue.
It is recommended that a tactile barrier should be place on the floor in front of the appliance to stop
the elderly, infirm or Children from direct contact with the hot surfaces of the appliance.
The appliance can only be used in a no hearth application if the installation complies with BS 5871-
2:2005 and appliance is installed so that the height from the base of the fireplace opening to the floor is
no less then 300mm.
