Ventilation And Combustion Air Requirements; Outside Air Connection - Stanley Brandon Dry Installation And Commissioning Instructions

Part 4: Recommendation for installation
design and installation.
V E N T I L AT I O N A N D COMBUSTION
REQUIREMENTS
It is imperative that there is sufficient air supply to
the burner of the cooker in order to support
combustion.
Detailed recommendations for air supply are given
in BS 5440 Part 2. The minimum effective air
requirement for this appliance is 44cm
calculating combustion air requirements for this
appliance use the following equation: 5cm
each kW of rated input above 7 kW.
If there is another combustion appliance fitted in the
same or adjacent room, it will be necessary to refer
to B.S. 5440: Part 2 & I.S 813 to calculate the
additional air supply.
All materials used in the manufacture of air vents
should be such that the vent is dimensionally stable
and corrosion resistant.
The effective free area of any vent should be
ascertained before installation.
Air vents direct to the 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 the
Building Regulations (see Technical Data) from any
part of any flue terminal. These air vents must also
be satisfactorily fire proofed in accordance with the
current Building Regulations.
Air vents in internal walls should not communicate
with bedrooms, bedsits, toilets, bathrooms or rooms
containing a shower.
Air vents traversing cavity walls should include a
continuous duct across the cavity. The duct should
be installed in such a manner as not to impair the
weather resistance of the cavity.
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.
If there is an air extraction fan fitted in the room or
adjacent rooms where this appliance is fitted,
additional air vents will be required to alleviate the
possibility of spillage of products of combustion from
the appliance/flue while the fan is in operation.
Refer to B.S. 5440 Part 2 and the Gas Safety
(Installation & Use) Regulations as amended.
Where such an installation exists, a test for spillage
should be made with the fan or fans and other gas
burning appliances in operation at full rate. (i.e.
extraction fans, tumble dryers) with all external
doors and windows closed.
AIR
If spillage occurs following the above operation, an
additional air vent of sufficient size to prevent this
occurrence should be installed. As a general guide
an extra 50cm
for most situations.

OUTSIDE AIR CONNECTION

2 . When
This appliance may be connected direct to the
2 per
outside of the house for its air supply.
1. If this option is used a special kit is available to
order.
2. Additional combustion air is not required as
indicated in B.S. 5440 Part 2.
3. Remove air inlet plate on front right hand side,
replace it with the blanking plate located at back
left hand side (see fig.15).
4. Connect the optional 125mm (5") spigot to the
base, see fig. 16
5. To connect this cooker to an outside air supply
use the special order kit.
6. Air inlets traversing cavity walls should include a
continuous duct across the cavity. The duct
should be installed in such a manner as not to
impair the weather resistance of the cavity. This
duct should be satisfactorily fire proofed as per
Building Regulations.
7. Joints between air vents and outside walls
should be sealed to prevent ingress of moisture.
Fig. 15
11
2
of air vent free area will be sufficient