FLUE LINERS
Chimney’s lined with salt glazed earthenware pipes
are acceptable if the pipes comply with BS 65 and
must be 150mm (6”).
The approved liner should be secured at the top and
bottom by sealing the clamping plates, and an
approved terminal used at the top.
It is essential that every flue system be inspected
and tested by the installer upon completion, to
ensure that the combustion products are completely
discharged to the outside atmosphere.
VENTILATION & COMBUSTION AIR
REQUIREMENTS
1.
It is imperative that there is sufficient air
supply to the burner of the cooker in order
to support correct combustion.
2.
The air supply to this appliance must comply
with BS 5410 Part 1.
3.
The minimum effective air requirements for
this appliance if 95cm2. When calculating
combustion air requirements for this appli-
ance use the following equation: 550mm2
per kW of maximum rated output above
5kW. These requirements are illustrated in
OFTEC Technical book No.3 and B.S. 5410
Part 1.
4.
The vent must either be connected direct to
an outside air supply or to adjacent rooms
having a permanent vent to the outside.
5.
If there is another combustion appliance
using air fitted in the same or adjacent room,
it will be necessary to refer to B.S. 5410 Part
1 to calculate the additional air supply.
6.
All materials used in the manufacture of air
vents should be such that the vent is dimen-
sionally stable and corrosion resistant.
7.
The effective free area of any vent should
be ascertained before installation. The
effect of any gauze or screen should be
allowed for when determining the effective
free area of any vent.
8.
Air vents to be outside of the building should
be located so that any air current produced
will not pass through normally occupied
areas of the room. An air vent outside the
building should not be located less than the
dimensions specified within B.S. 5410 and
Part J of the Building Regulations. (i.e from
any part of any flue terminal). These air
vents must also be satisfactorily fire proofed
as per Building Regulations Part B.
9.
Air vents in internal walls should not com-
municate with bedrooms, toilets, bathrooms
or kitchens.
10.
Air vents traversing cavity walls should
include a continuous duct across the cavity.
The duct should be installed in such a man-
ner as not to impair the weather resistance
of the cavity.
11.
Joints between air vents and outside walls
should be sealed to prevent the ingress of
moisture. Existing air vents should be of the
correct size and unobstructed for the
appliance in use.
CLEARANCES TO COMBUSTIBLES
Minimum clearances to combustible materials:
Maintain at least the following clearances:
50mm (2”) from rear of cooker. (see fig.7)
10mm
1
/2
” from the lower edge of the hob to the work
top when aluminium strip is not fitted. (See fig.6).
5mm from the lower edge of the hob to the work top
when aluminium strip is fitted. (see fig.8)
3mm from cooker front edge to kitchen units filler
strip. (see fig.10).
Minimum clearance to non-combustible materi-
als:
25mm (1”) to rear (see fig.9).
Never obstruct free air circulation from around of
entering the cooker grills.
Fig.6
10
Fig.7
Fig.8
Fig.9
