General Installation Requirements - Valor COSYFLAME BR623 Installer's Manual

This appliance is not suitable for installation in a room or internal space containing a bath or shower or where steam is regularly
present or in a private garage.
This appliance is suitable for the following: -
1. A masonry chimney with a minimum diameter of 175mm (7" ) free from any obstruction, and with any damper or restrictor
plate in the chimney removed or secured, and having a minimum effective flue height of 3m (10ft). Note the relevant flat
surface area requirement (Figure 1). A masonry chimney having a correctly installed flue liner to BS715 and with a minimum
flue diameter of 125mm is also acceptable. Chair brick removal may not be required providing at least 50mm clearance is
available from the flue outlet to any fireplace component. The appliance is designed to cater for low lintel installations (min
height 505mm) providing a minimum distance of 25mm is maintained between the lintel and the front face of the fireplace
(i.e. 25mm rebated fire surround).
2. To a fireplace that has a precast concrete or clay flue block system conforming to BS1289. The appliance is suitable for
installations conforming to older versions of BS1289 as well as the current edition. The flue blocks must have a minimum
width not less than 63mm and a cross-sectional area not less than 13,000mm
sectional area of 13,000mm
cases. The total depth of the opening measured from the finished front of the fireplace (Including plaster, surround etc.)
must be not less than 118mm (Figure 2).
The current version of BS1289 recommends that there should be an air space or insulation between the flue blocks and the
plaster because heat transfer may cause cracking on directly plastered flues. However, generally this appliance is suitable for
installations under all circumstances unless there is a history of cracking problems. Remember that faults such as cracking
may be caused by poorly built and restrictive flues, e.g. mortar extrusions, too many bends, flue heights below three metres,
restrictive terminations, etc.
Figure 1 Masonry Fireplace
3. A sheet metal flue system conforming with BS4543 or BS715,
the flue diameter being a minimum of 125mm (5" ) (see Figure
3) with a minimum internal depth of 150mm. Incombustible
mineral wool insulation of not less than 50mm thickness must be
applied to the top surface of the system firebox, as shown in
figure 3.

GENERAL INSTALLATION REQUIREMENTS

2
. The current revision of the standard requires 16,500mm
2 Older editions of BS1289 required a cross-
.
2
Figure 2 Pre-cast Fireplace
Figure 3 Factory Made Flue System
6
. This appliance is suitable in both