Arada Stratford Ecoboiler User manual

AFTER INSTALLATION RETAIN THIS GUIDE & PASS
TO CUSTOMER FOR FUTURE REFERENCE
BK680 SPECIFIC Rev 04 JUL 2017
Ecoboiler Cassette Stove Installation Guide
Ecoboiler Cassee
EN 13229:2001 +A1:2003 +A:2004 CE

Arada Ltd
July 2017
Please carefully read through the entirety of this installation
guide before commencing installation. Should you have any
questions about our stoves that are not covered in this manual,
please contact the Arada retailer in your area, or call our
technical support department on 44 (0)1297 35998. You should
retain these instructions for future reference.
Arada has a policy of continuous product development and
therefore we reserve the right to amend specifications without
prior notice. Due to printing cycles, items or options may be
described before they are generally available or after they have
ceased. Please check with your retailer or dealer if you are
unsure about any aspect of your stove, its installation or correct
use.
Stratford Ecoboiler Cassette Stove Installation Guide
ECOBOILER Cassette Installation Guide
Page 2 BK 680 Specific
Any further warnings in this document will be
marked out in a box such as this one. Ignoring the
warnings could lead to damage/injury to persons
and/or property.

Contents
1 Warnings ……………………………………………………………..
2 Health & Safety ……………………………………………………...
3 Installation Requirements
3.1 Hearths & recesses……………………………………………….
3.2 Combustible materials……………………………………………..
3.3 Combustion air requirements...…………………………………..
4 Flues And Chimneys………………………………………………..
5 Installing the stove
5.1 Removing the door …………………………………………………
5.2 Removing the fuel retainer ………………………………………..
5.3 Removing the throat plate …………………………………………
5.4 Assembling the grate bars ………………………………………...
5.5 Connecting the spigot outlet to flue system ……………………..
5.6 Combustion air connection………………………………………...
5.7 Sealing the back and base of inset stove to fire surround …….
5.8 Fitting the surround trim …………………………………………...
6 Connecting the boiler to your heating circuit
6.1 Integral boiler ……………………………………………………….
6.2 Water connections …………………………………………………
6.3 Safety vent circuit ………………………………………………….
7 Maintenance
7.1 Removal of ash around the damper and thermostat……………
7.2 Removal of the thermostat ………………………………………..
7.3 Calibration / setting the thermostat assembly …………………..
8 Final check list and commissioning the stove ………………..
9 Reference …………………………………………………………….
ECOBOILER Cassette Installation Guide
BK 680 Specific Page 3
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22-23

BK 680 Specific Page 4
ECOBOILER Cassette Installation Guide
1 Warnings
It is a LEGAL REQUIREMENT that the installation of all new or replacement, wood or
solid fuel heating appliance, obtain building control approval from your local authority or
the installation work must be carried out through a government approved competent
persons scheme. A list of all competent person schemes can be found :
https://www.gov.uk/guidance/competent-person-scheme-current-schemes-and-how-
schemes-are-authorised
Any manufacturer’s instructions must not be taken as overriding statutory requirements.
The Ecoboiler Cassette MUST NOT be connected to a shared flue system.
Please Note: Classification of these appliances is for intermittent use only.
Do not use aerosol sprays or any other flammable materials near the appliance when in
use.
Do not use the appliance as an incinerator.
Use only recommended fuels, STRICTLY NO unsuitable and non recommended fuels
or materials or liquid fuels allowed.
Pure petroleum coke or Bituminous house coal must NOT be burned in this appli-
ance. The use of these fuels will invalidate the appliance guarantee.
Arada recommends the use of approved smokeless fuels which have been deemed
suitable for use on closed appliances. If in doubt, contact The Solid Fuel Association,
telephone: [phone] or visit ww.solidfuel.co.uk.
Please ensure that the air inlet vent grills to the dwelling are not obstructed or liable to
be blocked.
Caution must be exercised during operation of the appliance as both internal and exter-
nal surfaces will be hot to touch, use the stove mitten provided when the appliance is in
operation.
A fireguard conforming to BS 8423:2002 should be used in the presence of children or
elderly people.
Always observe the distances to combustible materials as stated on the appliance data
plate and in the technical data section of this manual. Ensure no soft furnishings or
combustible materials are susceptible to heat radiating from the appliance.

BK 680 Specific Page 5
ECOBOILER Boiler Installation Guide
2 Health and Safety
Before any installation work is undertaken consideration must be given to the
Health and Safety at Work Act 1974. Safe working practices should be
followed at all times.
Please consult health and safety guidelines for advice on handling heavy and/
or large items.
During installation ensure that adequate precautions are taken to avoid
unnecessary risk to yourself or any householder.
The danger from the caustic nature of fire cement, should be avoided by
using these accepted methods: Wear gloves when handling fire cement.
Wear goggles when chiselling or looking up chimneys.
This stove contains no asbestos. If there is a possibility of disturbing any
asbestos in the course of the installation then please seek specialist guidance
and use appropriate protective equipment.
3 Installation Requirements
3.1 Hearths and recesses
The stove should be installed on a surface with adequate load bearing
capacity. If the existing construction does not meet this prerequisite, suitable
measures (e.g. load distributing plate) should be taken to achieve it. Please
pay particular attention when examining existing building work for suitability to
meet the following requirements.
Hearths and recesses for Cassette stoves should have a sufficiently flat
surface to allow a good seal to the stove body to be created during its
installation. Stonework, uneven bricks etc. may need further work to ensure
that this can be achieved.
Cassette stoves should be installed into a recess on a non-combustible
surface not less then 125mm thick (conforming to Building Regulations) of
suitable load bearing capacity.
Allowances should be made for the expansion and contraction of materials
which are fitted up to and near the appliance.

BK 680 Specific
Dimensions of the constructional hearth for all stoves (including any 'hole in
the wall’ type installation) should project at least 500mm forward of the front
of the appliance and 150mm at the sides. The surface of the hearth should
be free of combustible materials. The superimposed hearth for all
installations should project at least 225mm forward from the front of the
appliance and 150mm either side of the edge of the appliance.
In most buildings with solid concrete or stone floors, the requirement will be
met by the floor itself, but mark the hearth to ensure floor coverings are kept
well away or use different levels to mark the hearth perimeter.
Please be aware that hot air can cause staining above the fire in a similar
fashion to walls above radiators. To help prevent this and cracking we
recommend that plastering above the fire should be fitted with reinforcing
expanding mesh for at least 220mm above, and the full width of the fire. You
should also use a suitably heat resistant plaster.
When installing the stove into a recess it is important that the front outer
jacket edges sit 5mm proud of the wall surface to enable the trim to clip onto
the fire.
3.2 Combustible materials
Please view the product sheet which accompanied your stove for specific
minimum distances to combustible measurements.
Ideally, adjacent walls should be of suitable non-combustible construction,
preferably brickwork.
In large fireplaces take care that any supporting beam is protected by a 13
mm sheet of heat resistant fire board spaced 12mm off the surface with strips
of non-combustible material.
Make sure that there is a gap between an un-insulated flue system and any
combustible material. This gap must be at least 3X the outside diameter of
the flue pipe, or 1.5X the flue diameter to non combustible surfaces. Please
consult the flue manufacturers specification for insulated flues.
Page 6
ECOBOILER Cassette Installation Guide

BK 680 Specific Page 7
ECOBOILER Cassette Installation Guide
3.3 Combustion air requirements
All stoves require ventilation to burn safely and correctly.
The Stratford Ecoboiler Cassette differs from conventional stoves in that air
for combustion is only supplied from an external source rather than the
room or dwelling.
The fitting of the external air allows the stove to be installed in a room that
may otherwise be sealed to and extent that would prohibit the correct and
safe burning of the stove. This may also apply to houses in general sealed
to a very high level to meet various energy efficiency targets.
Therefore the requirements normally associated when installing a stove,
for example, allowing for the permeability of the house (air permeability is
the general seepage of air into the house via air vents, doors and windows
etc.) are not applicable.
The product is factory fitted with a with an air supply adaptor located on the
base of the appliance that will accept a flexible pipe of a diameter 102mm
externally. See Fig. 1 & 4 for details.
The air duct fitted must be of minimum diameter 100mm, non combustible
and ducted to the outside in a manner that will not effect the performance of
the stove.
No sharp bends and a maximum duct length of 10 metres is permissible.
Where the duct terminates on an external wall ensure that there is no risk of
blockage with leaves or accidental placement of items, ensure there is no
risk of ingress of moisture or access for rodents.
Avoid fitting the air inlet pipe through a wall that may be unduly effected by
prevailing winds that may cause a suction on the pipe bringing combustion
products back down the flue.
In extreme cases the placement of the terminal on the external wall may
pose problems and remedial action may be required to relocate the terminal
or provide two terminals on opposite walls to balance the wind effect.

BK 680 Specific
ECOBOILER Cassette Installation Guide
Where the stove is connected to outside air and there is NO draught
stabiliser is fitted, there is no requirement for an additional air vent,
provided a successful ‘smoke draw test’ has been carried out as part of
commissioning.
NOTE: If a requirement of the installation, a draught stabiliser IS fitted, then
a permanent air vent will be required and should be increased by 300mm2
for each KW of rated output up to 5KW and an additional 850mm2 for each
KW output over 5KW. Please refer to Building Regulations Part J (BS 8303
Part 1).
For further information on detailed guidelines on required ventilation sizes
please refer to the Document J or your local building control department.
Page 8
FIG. 1. Direct Air Connection (Combustion Air)
Rear Of
Appliance
Base Of
Appliance
Combustion
Air
Connection

4 Flue and Chimneys
The stove must be connected to a suitable and efficient flue so that products
of combustion (fumes) from the stove are expelled to the outside air. Please
remember that chimney draught is dependent on four main factors :
 Flue gas temperature
 Flue height
 Flue size
 Flue terminal
To ensure a good up draught it is important that the flue gases are kept
warm and that the flue size suits the stove. The termination of the outlet at
the top of the flue also needs to comply with Building Regulations.
The minimum effective height of the flue must be at least 4.5 metres from the
top of the stove to the top of the flue outlet. When warm the flue draught
should be between 0.1 to 0.2 mbar.
The draw of a chimney / flue can vary in different weather conditions and the
customer should be made aware of this.
Failure to correct an over-drawing flue will invalidate the warranty.
A chimney may comply with regulations but could still be subject to down
draught and similar problems. A chimney terminating above the ridge level is
generally less likely to suffer such problems.
If a new chimney is being provided it should fully comply with the relevant
Building Regulations that specify the requirements for solid fuel burning
installations. Suitable types of chimney include the following :
 Masonry Chimney : Built with clay or concrete liners, or a
chimney block system meeting Building Regulations. These
types of chimneys should be installed in accordance with
the Building Regulations and BS EN 15287-1:2007.
 Factory Made Insulated Chimney : Complying with BS
4543:Part 2 (often called Class 1 prefabricated metal
chimney). These types of chimneys should be installed
in accordance with Building Regulations and BS EN
15287-1:2007.
Page 9BK 680 Specific
ECOBOILER Cassette Installation Guide

Page 10 BK 680 Specific
Due to the gradual introduction of European Chimney Standards chimneys will
be specified according to their performance designation as defined in BS EN
1443 that covers the General Requirements for chimneys. The minimum per-
formance designation required for use with solid fuel burning stoves is T450
N2 S D3.
The flue and chimney installation must be carefully checked by a competent
person before fitting the stove to ensure it is suitable and will work safely.
If the chimney is old (i.e: built of brick or stone without a liner) or being opened
up for reuse additional checks and smoke testing as described in Appendix E
of the Approved Document J 2010 Edition should also be carried out to ensure
the flue and chimney are in good operating condition.
Check the existing flue is in good condition with suitable access for collection
and removal of debris.
It is also important that suitable flue pipe (recommended at least 600mm in
length) complying with the Building Regulations is used to connect the stove
to the flue in the chimney. Suitable access should be provided into the flue for
regular inspection and sweeping of the flue ways.
The installer should comply with Building Regulations requirements in respect
of providing a Notice Plate giving details on the chimney, flue lining, hearth
and fireplace installation.
Chimneys should be as straight as possible. Horizontal runs should be avoid-
ed except where the rear outlet of the appliance is used, in which case the
horizontal section should not exceed 150mm in length. If necessary a combi-
nation of 45° and 90° bends can be used as long as the sum of their angles is
not greater then 180° in total. IE : Four 45° bends, or two 45° and a 90° bend.
If the stove appears to be working hard but produces very little output to the
room it is likely that excess draw is present in the chimney, and that heat is
being sucked out of the appliance and up the chimney. If this is the case we
recommend the fitting of a draught stabiliser in preference to a flue damper, in
the interest of safety and efficiency.
ECOBOILER Cassette Installation Guide

BK 680 Specific Page 11
ECOBOILER Cassette Installation Guide
5 Installing the Stove
To make the stove easier to manoeuvre (thus safer) we recommend you
remove the following parts which can then be refitted when the stove is in its
final position:
 Door (To help prevent the glass from breaking)
 Fuel Retainer
 Throat Plate
 Grate Bars
 Operating Tool
 Ash pan
5.1 Removing the door.
Open the door so that it’s perpendicular to the stove body and then carefully lift
the stove door upwards of its hinges. To replace the door reverse the
instructions above.
5.2 Removing the fuel retainer
The fuel retainer can simply be removed by lifting the piece upwards and
withdrawing the location lugs from the location slots within the front brace.
The piece can be rotated through the door aperture. Reverse procedure for re-
fitting.
5.3 Removing the throat plate
The throat plate rests on a structural brace welded to the rear face of the
appliance. Within the brace there are two location slots, these align with the
two lugs protruding from the throat plate.
Lift the throat plate and with the location lugs clear from the brace, rotate the
throat plate and withdraw from the appliance. Reverse procedure for refitting.
5.4 Assembling the grate bars
In your stove the grate system comprises of a series of cast iron grate bars,
seated on a pair of combs. All bars in the grate are identical.
The bars should be seated with every other bar rotated 180 degrees, so the
ends marked ’H’ and ’L’ alternate on each comb. When assembling the grate,

fit bars to the low sections of the comb first by seating the ends marked ’L’
onto the low part of the comb, whilst the ends marked ’H’ should then be
seated on the high sections. (See Fig. 2, below)
5.5 Connecting the spigot outlet to the flue system
The flue pipe must be fitted inside the outlet spigot as shown in Fig. 3 adjacent
page. Failure to do so, could result in the spillage of condensation running
down the flue and ultimately into the firebox of the appliance.
Fire cement and glass fibre rope seal should be used to create an airtight seal
between the flue and spigot. See Fig. 3. for information.
ECOBOILER Cassette Installation Guide
Page 12 BK 680 Specific
FIG. 2. Assembled Grate Bars Shown Seated On Comb
High ‘H’ end of
grate bar
Low ‘L’ end of
grate bar
Comb

5.6 Combustion air connection
As decribed earlier in this manual, the connection for the combustion supply
air is on the base of the appliance. The connection hole is offset from the
middle of the appliance, please see the below plan diagram
FIG. 3. Fitting the flue pipe inside spigot collar
Page 13
BK 680 Specific
ECOBOILER Cassette Installation Guide
26142
260
118
566 20
20
RIGHT
LEFT
FRONT
REAR
FIG. 4. Plan view of appliance—Showing air connection & fixing
2x Bolt down fixing points
Centre of air connection
Mid point of appliance

BK 680 Specific Page 14
ECOBOILER Cassette Installation Guide
5.7 Sealing the back and base of inset stoves to a fire surround
In order for the stove to operate correctly and at maximum efficiency it is
necessary to achieve a good seal between the back face of the stove
convector (rear body section), the stove back base sections and the
decorative fire surround and hearth.
This should be achieved using fire cement. Any void surrounding an inset
stove when installed should be filled with fire cement or fire cement /
vermiculite mix in the interest of safety and efficiency.
5.8 Fitting the surround trim
Please refer to the instructions supplied with the decorative trim, for
information on how to fit them.
6. Connecting the boiler to your heating circuit
6.1 Integral Boilers
Integral boilers should only be connected with the flow and return connections
of any circuit on opposite sides of the appliance (cross -flowed) and to an
indirect hot water tank / system with Fernox or other similar corrosion inhibitor
to prevent both corrosion and the formation of lime scale.
Connecting pipes should be screwed to a maximum depth of 19mm for the
face of the tapping boss (1” BSP Parallel).
Remember to incorporate a drainage plug / tap at the lowest point of the
circuit to facilitate draining & flushing.
If a pipe stat is not fitted to control the radiator circulation pump, then cold
water corrosion may occur.
All Arada boiler stoves must be installed in an indirect
vented (also known as an open vented) central heating
system.

6.2 Water connections
To connect the indirect hot water cylinder to the stove, use 28mm copper
pipes. Ensure that the pipes rise continuously to the cylinder.
Ensure that runs are not too long (i.e. 6 metre maximum each for flow and re-
turn). Install the cylinder above the level of the appliance and as close to it as
possible. Within reason the higher the cylinder the faster the circulation. En-
sure no valves are present in the pipes.
In addition to providing hot water the primary circuit is essential in providing a
’heat leak’ radiator to absorb excessive heat produced in the event of a circu-
lating pump shutting down.
Heat is produced in varying quantities while the stove is alight and care must
be taken to ensure that effective circulation can occur around the primary cir-
cuit to carry the heat away thus preventing boiling. The heat output of any radi-
ator installed as a ’heat leak’ should not be less than 10 percent of the
rated output of the appliance to which it is connected. It should not be fitted
with a control valve as it should never be turned off or down. The hot water
cylinder must be indirect with a minimum capacity of 110 litres conforming to
BS 1566 part 1.
A radiator of approximately 2m2 surface area should be connected to the
primary circuit.
6.3 Safety Vent Circuit
This circuit (shown in Fig. 5 on the next page) consists of a cold feed pipe, a
separate expansion pipe and expansion tank. The possibility that water in the
stove boiler may boil can never be completely ruled out, and it is therefore vital
to ensure that cold water can be provided to the boiler and steam vented from
it at all times.
The use of an expansion tank is important. This should have a capacity of at
least 7 percent of the systems total water capacity. The cold water feed pipe
should be at least 22mm in diameter.
There must not be any shut-off valves in the circuit. Pipes should be run so as
to avoid air locks. A safety valve should be fitted into the expansion pipe close
to the boiler. The expansion pipe should not be branched off from the cold
water feed pipe to ensure that it cannot be blocked by any sediment matter
originating from the expansion tank.
Page 15
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BK 680 Specific
Page 16
ECOBOILER Cassette Installation Guide
FIG. 5. Safety Vent Circuit
It is often possible and good practice to utilise the primary flow and return as
part of the safety circuit.
The ball valve and over-ow pipe (28mm diameter) from the expansion tank
should be copper. All pipes in unheated spaces should be lagged.
Various examples can be seen on page 22 & 23.
With solid fuel appliances, it is not practical to provide a sufficiently rapid
reaction for shutting down the fuel in the event of a sudden rise in water
temperature. A temperature valve, or preferably, a combined temperature
and pressure relief valve should be installed to operate in the event of high
water temperature occurring.

7 Maintenance
7.1 Removal of ash around the damper and thermostat
Regular checking and removal of ash from around the damper flap area, which
is central to the inner rear of the firebox cavity will ensure correct operation and
performance from your appliance.
To remove ash from around damper flap intake:
 Make sure the stove is unlit and cold.
 Open the main fire door.
 Remove the fuel retainer, ash pan and all of the grate bars.
 Remove the ash pan heat shield, by using the finger cut out at the front of
the part, with draw part through the ash pan opening. See Fig. 6.
 DO NOT remove the air duct (located on RH Side).
 Vacuum away any loose material & ash from the bottom rear of the firebox
(shown below in RED colour)( Fig. 7.).
 Reverse above procedure for re-fitting.
BK 680 Specific Page 17
ECOBOILER Cassette Installation Guide
FIG. 6. Ash
Pan Heat
Shield
FIG. 7. Clean Rear
Firebox Area—
Shown In RED
Finger Cut Out (Front of part)
NOTE : Shaded
Area, Indicates
Location Of Air
Duct Below Grate
Bar Support.

Page 18 BK 680 Specific
ECOBOILER Cassette Installation Guide
7.2 Removal of the thermostat
The thermostat and damper flap have been factory set during manufacture.
However, over a period of time, it may be necessary to calibrate or check the
setting of the thermostat assembly.
Follow the steps on removal of ash from damper & thermostat, then -
 At the rear of the firebox, locate the 3 no. fixings for the grate bar
support (GBS) using a 10mm socket and extension, remove the fixings
and GBS, retain the fixings for re-fitting.
 Lift out the air duct from the rear RH side of the firebox.
 Open the control door and locate the two dome headed screws. Using a
3mm hex key, remove these fixings and retain for re-fitting (FIG. 7).
 Remove the thermostat knob, by releasing the grub screw by using a
2mm hex key (NOTE: DO NOT REMOVE SCREW). Pull on the knob
and remove from the shaft.
 From inside the firebox push the air box towards to rear of the
appliance, this will disengage the retaining brackets, you will then be
able to lift the front (you may need to rotate the air control lever to clear
the slot within the stove body). With draw the air box at approx. 45
degrees through the door aperture.
 Once the air box has been removed, this will expose the thermostat
fixings (2 no.), remove using a 8mm spanner or socket (FIG. 8.)
 On the right of the thermostat assembly towards the front of the stove,
remove the sensor wire cover plate again using an 8mm spanner, for
the 2 no. screws (FIG. 8).
 Outside of the firebox, RIGHT hand side of the stove, remove the 2 no.
fixings that hold the outer side spacer trim, using a Pozi screwdriver.
(FIG. 8.)
 Removing this trim will reveal the sensor phile, located close to the top
boiler connection terminal. Remove the sensor from the location tube
and carefully thread the sensor and connection wire through the corner
of the body. NOTE : TAKE CARE NOT TO KINK SENSOR WIRE.
(FIG. 10.)
 The thermostat and damper assembly can now be removed.

Page 19
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ECOBOILER Cassette Installation Guide
FIG. 8. Fixing locations (External With Door Open)
FIG. 9. Fixing locations (Internal)
FIG. 10. Thermostat sensor
location (Behind outer side
spacer trim)
Thermostat fixings
Thermostat sensor wire
cover plate fixings
Air box fixings
Outer
side
trim
fixings

BK 680 Specific
Page 20
ECOBOILER Cassette Installation Guide
7.3 Calibration / Setting The Thermostat Assembly
With the thermostat assembly removed, calibration / setting procedure can
be done in the following way -
 Replace the thermostat control knob (previously removed, during
thermostat removal from stove).
 Rotate the control knob fully clockwise until it reaches the stop position.
 Place the thermostat on a flat surface with a base of the mechanism
body on a small piece of 8mm MDF or similar wood.
 Now measure the high end of the damper flap / plate between the bench
and the top edge of the damper plate (the edge furthest from the control
knob) See FIG. 11.. This measurement should be 29mm +/- 1mm, if not
adjust as follows -
 Slacken off the locking nut against the damper either in or out as
required.
 Check the distance at the high end of the damper plate again.
 Once set correctly re-lock the locking nut.
 Check distance is still correct.
 Once the correct distance is achieved please refit the thermostat
assembly by following the reverse procedure ‘7.2 Removal of the
thermostat’.
FIG. 11. Damper
Flap Check