Flaire Issue 1.3 29/06/01
Page 2 of 11
Preparation
Before installation
Ensure that the local distribution conditions (identification of the type of gas and pressure) and
the adjustment of the appliance are compatible. Refer to burner data badge plate.
All types of flue
Ensure that:
•
It only serves one fireplace
•
Any terminal or cowl fitted is approved for use with this type of appliance.
•
It is clear of any obstruction, and any damper or restricter is removed or fixed
permanently in the fully open position.
•
Any chimney used for an appliance burning a fuel other than gas must be thoroughly
swept before installing any gas appliances.
•
The chimney is properly sealed so that the combustion products do not come into
contact with combustible materials outside the chimney.
•
The base of the chimney is clear of loose debris, bricking up, etc.
Check with a smoke match that there is a positive updraught present. If a terminal is fitted check
that it is free from obstruction and does not restrict the exit and safe dispersal of combustion
products.
Location
This appliance is not suitable for installation in a room containing a bath or shower.
The appliance may be installed to any of the following:
•
A masonry chimney with a minimum cross sectional area of 24,000 sq.mm, lined flue
with a minimum dimension of 100mm or a minimum diameter of 175mm and a
minimum effective height of 3m and having a throat forming lintel conforming to
BS1251. The appliance may be installed either without removing the chairbrick or in a
builder's opening with sufficient volume for debris collection conforming to Fig. 2.
•
A pre-cast block flue conforming to the requirements of BS1289 with a minimum cross
sectional area of 12,000 sq.mm and a minimum dimension of 60mm. See Fig. 2 for
minimum depth requirements.
Ensure that mortar fangs between the blocks do not protrude into the flueway. It is
essential that the flue terminal does not restrict the flue flow and complies with
BS1289; if not, replace with an approved terminal.
•
An insulated twin walled metal fluebox and flue system with a minimum diameter of
125mm, and minimum effective height of 3m. The system must conform to the
constructional requirements of BS715 and Fig. 2d.
The different types of installation are fully described in the next section.
The appliance must only be installed into an opening against a non-combustible wall.
Clearances
If a shelf is to be fitted above the fire, perhaps as part of a surround, it must be positioned a
minimum of 715mm (28in.) above the top of the hearth, and project no more than 200mm (8in.)
from the front plane of the opening. Combustible material such as wood may be fitted to within
100mm (4in.) of either side of the opening so long as it projects no more than 100mm (4in.) from
the front plane of the opening.
Soft furnishings, decorations and some wall coverings may discolour or scorch if positioned too
close to the fire.
Installing the fire
Site preparation
The Straxgas appliance must be installed on a level, non-combustible hearth in accordance with
BS5871, Part 2. See also approved document J 1/2/3 "Heat Producing Appliances" issued by
the Department of the Environment.
Clear the working area of all debris before removing the Straxgas appliance from the packaging.
See Figs. 2a to 2d for opening sizes and hearth requirements.
