13
GENERAL INFORMATION
Installing the Appliance
Each installation is unique to the property so it is not possible to give
details to suit every setting.
The installation must comply with Building Regulations and be made
using "best practice" construction methods.
Take care when installing the appliance. Careless handling and
use of tools can damage the finish and/or area.
There are 2 types of installation for this appliance:
1. Studwork Installation
2. Fitting to a Masonry Chimney
Appliance Location
This appliance sits in a recess, all nearby walls that are not classed as
re walls or are considered unsuitable for exposure to heat must be
protected by non-combustible building material in accordance with the
specications below.
Seal all joins in the non-combustible material using the method
recommended by the manufacturer.
Ventilate the space between the insert and the recess as specied in
these instructions.
Refer to the manufacturer’s installation instructions when connecting
the chimney system ensuring that the distance to combustible
materials are maintained.
Ensure all combustible materials are not placed closer than 1m from
the front of this appliance.
The appliance must be installed with clearance to the building material,
not in direct contact with it, to allow for thermal expansion of the insert.
Ventilation
Do not pack the void around or above the appliance with insulation
materials such as mineral wool or vermiculite.
The void built for the cassette must be ventilated to prevent a build up
of heat. If the void is sealed then you must fit vents at both low and
high levels of approximately 20cm
2
each. These vents must take cold
air from the room and return warm air back into the room.
An access hatch must be left in the side of the chimney breast for
future servicing and inspection of the flue and appliance.
Building Materials
Stovax recommend building the enclosure from the following materials:
Metal Studwork
Non-combustible board: Calcium Silicate Board - NOT PINK BOARD
Heat Resistant Plaster: Purimacho (any spider cracks that develop
after installation will need to be rubbed down and relled with
Purimacho heat resistant ller to stablise).
Ensure all distances to combustible materials are maintained.
Registered Professional:
Before installation and/or use of this appliance please read these
instructions fully and carefully to ensure that you have fully understood
their requirements.
The appliance must be fitted by a registered installer, or approved by
your local building control officer.
Structural Support:
If installing on a wooden floor check that the floor joists are strong
enough to bear the weight of the insert, chimney and construction
parts.
Hearth:
A Constructional Hearth with a depth of 125mm and a 12mm.
Decorative Hearth Plate must be installed to protect a combustible floor
from the risk of falling embers if mounted directly on the floor.
The Decorative Hearth must extend 300mm in front of the hearth and
can be made of natural stone, concrete, metal or glass.
Final inspection of the installation:
When it has been installed, the appliance must be commissioned in
accordance with standards and practices to ensure full working order
and a correct handover given to the customer.
Flue and Chimney
The flue or chimney system must be able to withstanding flue
temperatures of up to 4000C.
The external diameter of the connection sleeve is 155mm.
In normal operating mode, draft in the chimney should be 20-25 Pa
close to the connection sleeve. The draft is affected primarily by the
length and area of the chimney and also by how well sealed it is.
The minimum recommended chimney length is 3.5m and a suitable
cross-section area is 150-200cm² (140-160 mm in diameter).
Sharp bends and horizontal lengths in a flue pipe reduce the draft in the
chimney.
It must be possible to sweep the full length of the flue, and the soot
doors must be easily accessible.
Carefully check that the chimney is sealed and that there is no leakage
of smoke from the connections.
Combustion Air Supply
When the appliance is installed, it is essential to ensure adequate air
is supplied to the room. Air can be provided indirectly via a vent in the
outer wall or via a duct from the outside that connects to the sleeve on
the underside of the insert. The required volume of combustion air is
about 20 m3/hour.
The outer diameter of the combustion air connection sleeve is 80mm.
If a pipe is longer than 1 m, its diameter must be increased to 100mm
and a larger wall vent will be required.
In heated spaces, the flue must be insulated to prevent condensation
using 30mm mineral wool covered with a vapour barrier. The hole in the
wall (or floor) at the exit point must be properly sealed with flue jointing
compound.
A flexible pipe to provide external directly into the appliance is available
and must be fitted at the time of installation.
CO Alarms
Building regulations require that whenever a new or replacement fixed
solid fuel or wood/biomass appliance is installed in a dwelling a carbon
monoxide alarm, complying with BS EN50291, must be fitted in the
same room as the appliance.
HETAS recommend the unit is permanently fixed in accordance with the
manufacturer's installation instructions or with the guidance contained in
Approved Document J where no other information is available.
Provision of an alarm must not be considered a substitute for either
installing the appliance correctly or ensuring regular servicing and
maintenance of the appliance and chimney system.
GB