Specifications

1. FLUE REQUIREMENTS.
The flue which the appliance is to be attached must
conform to BS 5440 2000:pt.1. Before the appliance is
installed, the flue system or chimney must be inspected
and passed as suitable.
This stove is suitable for installation onto either flexible
or fabricated steel flue systems and is also suitable for
class 1 chimneys, when fitted with vertical closure plate,
pre-cast flues, pre-cast chimney block, pre-cast flue
block and ridge tile vent. The minimum effective height
of the flue must be three metres measured from the
hearth to the termination of the flue. If the flue has any
non-vertical sections, the height should be increased in
line with BS 5440 pt.1. Prior to installation, the
installer should ensure that the flue is free from
obstruction, ideally should be swept and subsequently
smoke tested. Ensure that any dampers are fixed in a
permanently open position. The appliance has been
designed with a built in draught diverter, and as such no
further draught diverter need be fitted to the flue
system.
NOTE: If it is intended to fit the stove into an existing
brick built chimney without a closure plate, a 5”
(127mm) liner must be used. Larger lined flues may
work, but in some instances could cause cold start flue
problems resulting in nuisance shutdown. Lined flues
above 7” (175mm) are not recommended.
Prior to installation a smoke test must be carried out
to ascertain that there is sufficient draught in the
flue for safe operation of the stove.
2. FLUE CONNECTION
The Exminster stove may be installed as either top or
rear flue, and as such comes with all relevant parts to
enable connection of flue to either flue system.
If the appliance is to be installed as a Top Flue, place 1
of the flue gaskets on the top flue position. Using 3 M6
set screws and M6 washers attach the flue connector
and tighten up to ensure that the gasket is fully sealing
and is airtight. Repeat this operation on the back plate
with the flue blanking plate (with 3 holes drilled) and 3
M6 set screws; once again ensuring that the gasket
enforces a good seal and is air tight. This will leave the
Flat Top Flue Blank (no holes); this part is redundant
and may be disposed of.
If the stove is to be fitted as a rear flue, the same
procedure as above should be followed but with the
Flue Connector and Flue Blanking Plate reversed. If
fitted as Rear Flue then the Flat Top Flue Blank will sit
on top of the screw holding the Flue Blanking Plate and
will then sit flush with the Top plate.
It is recommended that a minimum height of 610 mm
from the stove should be established before any
significant changes in direction of the flue. Horizontal
or negative gradients in the flue pipe are to be avoided.
The flue system may now be connected to the stove;
this should be sealed using a fire resistant sealant.
Please note that all flue systems should be installed in
accordance with the flue manufactures
recommendations and BS5871:pt.1.
When installing the flue in properties of timber framed
construction, the regulations (BS 5440:Part 1:2000)
must be adhered to.
3. VENTILATION
The Exminster gas stove is rated at less than 7 kW; it
therefore does not normally require additional
ventilation in the room to conform to BS 5871 pt.2.
However it is important that adequate air for complete
combustion is available, and also if other gas appliances
or extractor fans are fitted in the same room or adjacent
rooms. Refer to BS 5440: pt.2. to ascertain the
additional ventilation requirements.
4. LOCATING THE APPLIANCE
The appliance must stand on a fireproof hearth, which
is manufactured of a non-combustible material with a
minimum thickness of 12 mm and must extend to at
least the lip of the stove.
The appliance must not be fitted against a rear wall
constructed from a combustible material. A minimum
gap of 280 mm should be given all round the stove
before combustible materials may be used in the wall
construction. There must be a minimum of 75mm
clearance behind the stove measured from the rear edge
of the draft diverter to any non combustible surface.
If the appliance is located in an opening, there must be
a minimum of 150mm each side of the appliance and
75mm to the rear measured from the rear edge of the
draft diverter.
A combustible shelf may be fitted over the appliance, if
in the case of a 150 mm or less deep shelf, there is at
least 280 mm clearance above the top of the stove. The
shelf depth may increase at the same rate as the
increase in clearance; i.e. a shelf depth of 200 mm
would require a clearance of 330 mm.
INSTALLATION INSTRUCTIONS - SITE REQUIREMENTS
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Fig. 2
PM166-2
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