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SECTION 4: VENTILATION
This Appliance does not normally require purpose provided ventilation.
However, if 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.
Section 5: SITE REQUIREMENTS
The fireplace opening should be inspected and repairs made where necessary.
A chair brick or ceramic fireback may be required providing that they conform to BS
1251:1987
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 (5in) minimum diameter lined brick or stone.
125mm (5in) minimum diameter twin wall flue conforming to BS715.
Any existing draught device situated under the fireplace must be sealed off.
The opening area must be non-combustible
.
The appliance requires a hearth with non-combustible surface of at least 300mm in depth and
12mm thick.
The top surface must be at least 50mm above the surrounding flooring level, or be
surrounded by a raised edge or fender 50mm high.
