Arada BK555 User manual

Wet Stove Installation Guide
BK555 Rev03
EN 13240:2001+
October 2013

GENERAL PRECAUTIONS
All local regulations, including those
referring to National and European standards,
need to be complied with when installing the
appliance.
Any manufacturer’s instructions must not be
taken as overriding statutory requirements.
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. In particular
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.
HEARTH
The stove should be installed on a floor 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.
Ideally, the appliance should stand on a
constructional hearth of non-combustible
materials not less than 125mm (5”) thick
conforming to Building Regulations.
Please read carefully through this installation guide before proceeding with installation of the stove.
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 08448 567181.
Arada Installation Manual2
WARNING
It is a legal requirement that the installation of all new or replacement, wood or solid fuel
heating appliances must obtain building control approval from your local authority. This can be
done by using a qualified heating engineer affiliated to a government approved competent
persons scheme such as operated by HETAS.
If in doubt, contact HETAS Limited either by telephone: [phone] or visit www.hetas.co.uk
The installation of any electrical services during the installation of this boiler and associated
heating system must be carried out by a registered competent electrician.
Arada Ltd will not be responsible for any consequential or incidental loss or injury however caused.

Arada Installation Manual
INTRODUCTION
3
Dimensions of the hearth should project at
least 225mm (9”) forward of the front of the
appliance and 150mm (6”) at the sides. The
surface of the hearth should be free of
combustible materials.
Certain stoves manufactured by Arada are
suitable for installation on a non-combustible
12mm hearth. Please consult the technical
table found at the rear of the User Guide for a
list of suitable models.
COMBUSTIBLE MATERIALS
Please view the technical data table in the
rear of the User Guide and observe the
minimum distance to combustible materials
which is applicable to your stove model.
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 13mm
(0.5”) sheet of Masterboard or Superlux
spaced 12mm (0.5”) 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.
AIR FOR COMBUSTION
All stoves require ventilation to burn safely and
correctly. There are requirements that need to
be met when installing a stove, such as
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.).
There must always be a permanent means of
providing air for combustion into the room in
which the stove is installed.
For guidelines on required ventilation sizes
please refer to the ‘HETAS Guide’ which can
be found on HETAS’ website.
The positioning of any air vent must be so that
it cannot be liable to blockage or obstruction.
The fitting of an extractor fan in the same
room as the stove, or an adjacent room is not
permitted.
FITTING THE FLUE OUTLET AND HOT
PLATE
With the exception of the Stratford Ecoboiler 7
which has an integral rear spigot, the spigot is
found packed inside the appliance. The hot
plate is supplied fitted to the top opening and
is removed by turning clockwise.
Smear a very thin layer of fire cement on the
mating faces of the flue outlet and the hot
plate. Fit the outlet to the appliance in the
desired position.
Lock into place by rotating anti-clockwise and
tighten by tapping with a block of wood and
mallet from inside of the appliance. Similarly, fit
the hot plate (blanking plate) to the unused
Inside
Flue
Pipe
Outer
Spigot

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INSTALLATION
opening and clean off any surplus fire cement.
Note: The flue pipe must be fitted inside the
outlet spigot. Failure to do so could result in
the spillage of condensation running down the
flue.
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 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 in the
interest of safety and efficiency.
ADJUSTING THE SELF
LEVELLING FEET (IF APPLICABLE)
Adjustment is as follows:
 Position the stove on the hearth into its
final resting place.
 On the rear leg of the stove, loosen the
pozi screw, and rotate the inner ‘cam’
shaped levelling foot until this touches
the hearth.
 Re-tighten the pozi screw. Check the
stove is level with a spirit level.
 Repeat for the other rear leg.
FIRE BED SURROUNDS
Cast fire bed surrounds are supplied with the
boiler stove and should be fitted into the
retaining holes in the rear grate bar support.
GRATE BARS
The grate 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. The ends marked ‘L’
should be seated on the low part of the comb,
whilst the ends marked ‘H’ should be seated on
the high sections.
Flue Exhaust Diversion System
(FEDS) (Not applicable to EB25HE)
The inner section of the FEDS is welded in place
during manufacture. The outer FEDS is fitted at
the factory but may become dislodged during
transit. The rear end of the outer FEDS sits on

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INSTALLATION
retaining lugs as illustrated below.
If you need to remove the FEDS hold the bottom
of it with both hands, palms on the bottom sloping
face. Push up firmly to release the FEDS from the
retaining lugs. It may require a swift knock
upwards with the palm of your hand to release it.
FLUES AND CHIMNEYS
The flue draw is critical on any installation and
should be checked to ensure that it matches
what is specified. If it is higher than
recommended, provisions must be made to
correct the over draw.
The draw 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.
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. 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 mb.
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 built / installed it
should fully comply with the relevant Building
Regulations that specify the requirements for
solid fuel burning installations.
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 2002 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. If flexible flue liner is required this must
have an internal diameter of at least 6” /
150mm. This should be a double skin stainless
steel flexible liner that is independently
certified for use with solid fuel.
Details of suitable linings for use with wood and
solid fuel are given in the official HETAS guide
that can be viewed on their website at
www.hetas.co.uk.
It is also important that suitable flue pipe
complying with the Building Regulations is used
to connect the stove to the flue in the
chimney and that suitable access is provided
into the flue for regular inspection and
sweeping of the flue other than through the
appliance (e.g. wherever possible a soot door
or access through register plate).

Chimneys should be as straight as possible.
Horizontal runs should be avoided except
where the rear outlet of the appliance is used,
in which case the horizontal section should not
exceed 150mm (6”) in length.
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.
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.
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 for-
mation of limescale.
Stratford, Hamlet and Villager boiler models
are designed for use with indirect vented
central heating systems only. They are not
designed for connecting to direct domestic
hot water systems.
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 /
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6
INSTALLATION
tap at the lowest point of the circuit to
facilitate draining and flushing.
If a pipe-stat is not fitted to control the radiator
circulation pump then cold water corrosion
may occur.
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 return). Install the
cylinder above the level of the fire and as
close to it as possible. Within reason the higher
the cylinder the faster the circulation. Ensure
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 circulating 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 circuit to carry the heat
away thus preventing boiling. The heat output
of any radiator installed as a ‘heat
leak’ should not be less than 10% 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 2m2surface area
should be connected to the primary circuit.

THERMOSTAT AND DAMPER
PRESSURE CHECKS
The thermostat has been fitted and set correctly
during the manufacture. However it is advisable
to check the cold setting prior to lighting the fire
for the first time.
With the control knob turned fully clockwise (past
No.5) the circular damper plate should have a
gap of approximately 29mm between the
damper edge and the stove inner body face
when measured at the furthest point from the
control knob and in line with the actuation shaft.
Take care to measure this gap parallel to the
actuation arm centre line.
If this is not the case then please follow the steps
below to correct it.
To remove the thermostat:
 Pull the thermostat knob off the shaft.
 Remove the access cover plate using a
No.2 Pozi screw driver and then remove the
M5 screw.
Safety Vent Circuit
This circuit 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% 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.
It is often possible and good practise to utilise
the primary flow and return as part of the safety
circuit. The ball valve and overflow pipe (28mm
diameter) from the expansion tank should be
copper. All pipes in unheated spaces should
be lagged.
Various examples can be seen on pages 10
and 11.
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.
INSTALLATION
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 Now remove the two M5 screws securing
the thermostat to the stove body. The
thermostat should now be free and you
will be able to carefully remove it from the
stove body.
 On the rear of the stove remove the
thermostat sensor from its pocket and
push this carefully though the hole in
corner cut-out of the stove. (Take care not
to kink the copper tubing.).
Calibrating:
With the thermostat removed, replace the
control knob.
Rotate the control knob fully clockwise (as
viewed with the damper shaft to your left) until
you reach the end of possible travel.
Place the thermostat on a flat surface with the
base of the mechanism body on a small piece
of 8mm thick MDF or similar wood.
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INSTALLATION
Now measure the high end of the damper
plate between the bench and the top edge of
the damper, (the edge furthest from the con-
trol knob). This 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 the distance is still correct.
Once the correct distance is achieved please
refit the damper flap and thermostat by
following the reverse of ‘To remove the
thermostat” on the previous page and check
once again that the correct distance is
maintained.
The damper plate position hole used
and damper plate style is dependant
on the boiler stove model.

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INSTALLATION
REMOVAL OF ASH AROUND DAMPER
AND THERMOSTAT
Regular checking and removal of ash from
around the damper flap area, inner left landing
cavity and thermostat housing is necessary to
ensure correct operation.
To remove ash from around damper flap:
 Make sure the stove is unlit and cold.
 Remove the thermostat access cover as
detailed on page 7.
 Carefully clean away any cold ash from the
thermostat mechanism and housing cavity
using a vacuum cleaner.
 Refit the access cover.
To remove ash from the inner left landing cavity:
 Make sure the stove is unlit and cold.
 Open the fire door and remove the ash pan.
 Clean the under grate area carefully with a
vacuum cleaner.
 Insert a small screwdriver or thin piece of
wire into the slot at the bottom of the inner
left landing and loosen the ash build up
between the inner landing and damper
mating face.
 Vacuum away any loose material.
 Repeat this until all ash is removed.

FINAL CHECK LIST
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10
Before handing over the installation to the customer it is a requirement under Document J (of the
Building Regulations for England & Wales) that the appliance is lit and the functioning of the
chimney system is checked for satisfactory operation. The functioning of the hot water and heating
system should also be fully checked.
Please record the checks in the table below:
Operate the heating system and set the pump head.
Balance the radiators.
Re-vent and ensure there are no air locks.
Check all joints and seals.
Clean the outside of the appliance to prevent any stains becoming burnt on.
Check the flue draught which should read 1 - 2mm, or 0.1 - 0.2 mbar.
For a registered competent persons scheme, such as HETAS, please complete
a Certificate of Compliance, which is used for checking and reporting the
installation as imposed by the Government.
Explain the controls and operation of the appliance to the customer.
Ensure a Carbon Monoxide alarm is fitted. This must be between 1m to 3m of
the appliance, and approximately 150mm below the ceiling level.
A fireguard conforming to BS 8423:2002 should be used in the presence of
children and old or infirm people.
Explain to the customer, that when lighting a boiler stove, condensation may
form on cold parts of the stove and drip off of it during ignition. This is normal
and not indication of a leak.

INSTALLATION
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INSTALLATION
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INSTALLATION
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14
INSTALLATION EXAMPLES
Central heating and domestic hot water system using four boiler tapings.
Central heating without domestic hot water system using four boiler tapings.

15Arada Installation Manual
INSTALLATION EXAMPLES
Central heating and domestic hot water system using three boiler tapings.
Central heating without domestic hot water system using three boiler tapings.

Please Note: Arada has a policy of continuous product development and therefore we reserve the
right to amend the specification without prior notice.
Due to printing cycles, items or options may be described before they are generally available or
after they have ceased, so please check with your retailer or dealer.
Wet Stove Installation Guide
BK555 October 2013
Arada Ltd
The Fireworks
Weycroft Avenue
Axminster
Devon
EX13 5HU
Telephone: [phone]
Technical Helpline: [phone]