Hunter Stoves Stromstad, CVSVARFMBW, CVSSJUFM, CVSATTAFM, Atta Instructions For Installation/operation/maintenance/servicing

1

STRÖMSTAD/ ÅTTA/ SJU MODELS

CVSVARFMBW/CVSATTAFM/CVSSJUFM

Instructions for:

Installation/Operating/Maintenance/Servicing

JINSTR/STA/STS/05 REV A 09/10/17

2

CONTENTS INDEX:

WARRANTY………………………………………………………………………………………………………. 2
TECHINCAL SPECIFICATION………………………………………………………………………………. 3
IMPORTANT INFORMATION…………………………………………………………………………….. 4
SAFETY…………………………………………………………………………………………………………….. 5
APPLIANCE DIMENSIONS…………………………………………………………………………………. 6
PRE INSTALLATION REQUIRMENTS………………………………………………………………….. 6/7
LEGAL REQUIREMENTS……………………………………………………………………………………. 7
CLEARANCES……………………………………………………………………………………………………. 8
REMOVE INTERNAL COMPONENTS………………………………………………………………….. 9
INSTALLATION PROCEDURE…………………………………………………………………………….. 10/11
COMMISSIONING AND HANDOVER…………………………………………………………………. 11/12
OPERATING INSTRUCTIONS…………………………………………………………………………….. 13-15
MAINTENANCE & SERVICING………………………………………………………………………….. 15/16
TROUBLESHOOTING……………………………………………………………………………………….. 17/18
OPTIONAL EXTRAS…………………………………………………………………………………………. 19
SPARES……………………………………………………………………………………………………………. 20/21
INSTALLATION & COMMISSIONING CHECK LIST………………………………………………. 22
SERVICE RECORDS…………………………………………………………………………………………… 23
FULL WARRANTY INFORMATION…………………………………………………………………….. 24-25

HUNTER STOVES GROUP,
8 Emperor Way,
Exeter Business Park,
Exeter, Email: [e-mail]
Devon. EX1 3QS Website: http://www.hunterstoves.co.uk

WARRANTY
HUNTER STOVES GROUP OFFER A STANDARD 2-YEAR WARRANTY IF PURCHASED THROUGH A RECOGNISED DEALER. 1-YEAR

STATUTORY APPLIES IF PURCHASED THROUGH AN INTERNET COMPANY. WE ALSO OFFER AN EXTENDED 10-YEAR WARRANTY ON
NON-CONSUMABLE PARTS. PLEASE SEE THE WARRANTY SECTION AT WWW.HUNTERSTOVES.CO.UK OR ON PAGES 24-25 OF THESE
INSTRUCTIONS FOR FURTHER INFORMATION.

THE WARRANTY WILL ONLY BE VALID IF THE APPLIANCE IS INSTALLED BY AN APPROPRIATELY QUALIFIED ENGINEER IN ACCORDANCE

WITH THE MANUFACTURER’S INSTRUCTIONS AND TO THE APPROPRIATE BUILDING REGULATIONS AND/OR LOCAL BY-LAWS AND
SERVICED WITHIN 12 MONTHS OF INSTALLATION.

THIS APPLIANCE MUST BE REGULARLY SERVICED AND MAINTAINED, USING ONLY HUNTER STOVES GROUP APPROVED COMPONENTS

FOR THE WARRANTY TO BE VALID.

3

Technical Specification

For further information on ventilation please refer to Building Regulations Document J or your installer.

SMOKE CONTROL AREAS

This stove has been designed and assembled so that it may be used to burn wood logs in a Smoke Control Area.
Find out if you are in a Smoke Control Area by contacting your Local Authority.

The Stromstad, Atta and Sju are fitted with a permanent stop. Without the permanent stop in place the appliance is
not an exempt appliance and so may leave the householder liable for a fine up to £1000.

GENERAL

STRÖMSTAD
ATTA

SJU

Energy Efficiency Class
Nominal Heat Output

Wood

4.7kW

4.7kW

4.7kW

Energy Efficiency

104

104

104

Efficiency

Wood

78%

78%

78%

Mean CO (@13% O₂)

0.23%

0.23%

0.23%

Appliance Mass

125kg

115kg

105kg

Recommended Fuels

Wood

Seasoned Wood (less than 20% moisture content)

Log Length

250mm

250mm

250mm

FLUES

Mean Flue Gas Temperature

288°C

288˚C

288˚C

Flue Gas Mass Flow

3.9 g/s

3.9 g/s

3.9 g/s

Flue Outlet Size (Top or Rear Option)

127mm

127mm

127mm

VENTILATION

Traditionally Build Homes

- Where leakage is greater than

5m³/hour/m²

- Ventilation normally required =

550mm² per kW output over
5kw

NONE

NONE

NONE

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General Guidance

It is important that your stove is correctly installed
and operated as Hunter Stoves Group cannot accept
responsibility for any fault arising through incorrect
installation, use, maintenance or servicing.

These instructions cover the basic principles to
ensure satisfactory installation of the stove, although
detail may need slight modification to suit particular
local site conditions.

The installation must comply with current Building
Regulations, National and European Standards, Local
Authority Byelaws and other specifications or
regulations as they affect the installation of the
appliance.

The Building Regulations requirements may also be
met by adopting the relevant recommendations in
the current issues of British Standards BS 8303 and
BS EN 15287-1.

Only use approved fuels on this appliance.
Information about this can be found on Page 15.

This is a Domestic Appliance and must only be used in
accordance with these instructions. Do not place
articles that are affected by high temperatures on, or
near, this appliance. Do not place furniture or other
items within 1 metre of the front of this appliance.
See the note on material clearances on pages 8.

Fitting a stove in a room which also contains an
extractor fan and/or cooker hood should be avoided
where possible. If this is unavoidable, the suitability
of the space for fitting this appliance must be decided
at the discretion of a qualified installer, and a flue
draught interference test must be performed.

Do not obstruct the ventilation required for the safe
use of this appliance.

COMPETENT PERSONS SCHEME

Hunter Stoves Group recommend that this stove is
installed by a member of an accredited competent
persons scheme e.g. HETAS.

If the installer is not a member of a competent

person’s scheme, it is a legal requirement, in the UK,

to notify your Local Building Control Officer in
advance of any installation work starting.

HEALTH AND SAFETY PRECAUTIONS

Special care must be taken when installing the stove
such that the requirements of the Health and Safety
at Work Act are met.

HANDLING

This appliance is very heavy. Adequate facilities must
be available for loading, unloading and site handling.

FIRE CEMENT

Some types of fire cement are caustic and should not
be allowed to come into contact with the skin. In case
of contact, wash immediately with plenty of water.

ASBESTOS

This stove contains no asbestos. If there is a possibility
of disturbing any asbestos in the course of installation
then please seek specialist guidance and use
appropriate protective equipment.

METAL PARTS

When installing or servicing this stove, care should be
taken to avoid the possibility of personal injury.

MODIFICATION

No unauthorised modification of this appliance should
be carried out.

PLEASE READ THESE INSTRUCTIONS PRIOR TO INSTALLATION AND OPERATION. KEEP THESE

INSTRUCTIONS IN A SAFE PLACE FOR FUTURE REFERANCE AND SERVICING.

THIS APPLIANCE WILL BECOME VERY HOT WHEN USED IN ACCORDANCE WITH THESE INSTRUCTIONS,

HUNTER STOVES RECOMMEND THAT AN APPROVED GUARD IS USED TO PROTECT THE YOUNG, ELDERLY

OR INFIRM FROM HARM.

THE INSTALLER COMMISSIONING SHEET CAN BE FOUND ON THE BACK COVER. PLEASE ENSURE THAT IT IS

COMPLETED PRIOR TO USE.

5

SAFETY

WARNING – This appliance will be hot when in

operation and due care should be taken. The supplied
operating tool or glove may be used to open the door
and operate the air controls.

AEROSOLS

Do not use an aerosol spray on or near the stove
when it is alight.

FIREGUARDS

Always use a fireguard in the presence of children, the
elderly or the infirm. The fireguard should be
manufactured in accordance with BS8423 – Fireguards
for use with solid fuel appliances.

DO NOT OVER-FIRE

It is possible to fire the stove beyond its design
capacity. This could damage the stove so watch for
signs of over-firing. If any part of the stove starts to
glow red, the stove is in an over-fire situation and the
controls should be adjusted accordingly.
Never leave the stove unattended for long periods
without first adjusting the controls to a safe setting.
Careful air supply control should be exercised at all
times.

FUME EMISSION

Properly installed, operated, this appliance will not
emit fumes. Occasional fumes from de-ashing and
refuelling may occur. Persistent fume emission must
not be tolerated.

This appliance should not be operated with the door
open.

If fume emission persist, then the following
immediate action should be taken: -

➢ Open doors and windows to ventilate the room.
➢ Let the fire go out, or eject and safely dispose of

fuel from the appliance.

➢ Check for flue/chimney blockage and clean if

required.

➢ Do not attempt to re-light the fire until the cause

of the fume emission has been identified and
corrected.

If necessary, seek expert advice.

ADVERSE WEATHER

In a small number of installations, occasional local
weather conditions (e.g. wind from a particular
direction) may cause downdraught in the flue and
cause the stove to emit fumes. In these
circumstances, the stove should not be used. A

professional flue installer will be able to advice on
solutions to this problem (e.g. anti-downdraught
cowl).

CARBON MONOXIDE DETECTOR
Hunter Stoves recommend a Carbon Monoxide
Detector that conforms to the latest issue of BS EN
50292 is placed in the same room as the appliance.
The installation of such an alarm is not considered as
a substitute for regular maintenance or servicing or
the appliance and Flue system.

IN THE EVENT OF A CHIMNEY FIRE:

➢ Raise the alarm
➢ Call the Fire Brigade
➢ Close appliance air controls
➢ Move furniture, ornaments etc. away
➢ Place a fireguard in front of stove
➢ Check the chimney breast for signs of

excessive heat.

If the wall is becoming excessively hot, move furniture
away.
Ensure the Fire Brigade can gain access to your roof
space in order to check for fire spread.

6

APPLIANCE DIMENSIONS

PRE-INSTALLATION REQUIREMENTS

PLEASE CHECK THE FOLLOWING:

Any existing chimney/flue system must be confirmed
as suitable for this appliance as defined in Building
Regulations Document J. It must be swept and
inspected, by a competent person (see notes), to
confirm that is structurally sound and free from cracks
and obstructions.

The diameter of the flue should not be less than
150mm and not more than 200mm. Flue should not
be less than 150mm and not more than 200mm. Do
not connect to systems that have large voids or
spaces. If any of these requirements are not met, the
chimney should be lined by a suitable method.

If the chimney is suspected of previously serving an
open fire it must be swept again, within a month of
regular use, to clear any soot that may have been
dislodged due to the variation in combustion levels
and higher flue gas temperature levels. The
chimney/flue system exit must comply with Building
Regulations Document J. The minimum height and
should terminate in accordance with Table 1.

CONNECTION TO THE CHIMNEY

An existing fireplace opening can be bricked up or
sealed with a register plate. A short length of flue
pipe of minimum 150mm internal diameter may then
be used to connect the stove to the chimney. This
flue pipe should be made of 316 grade stainless steel
or vitreous enamelled steel, nominal thickness

1.2mm. Ensure that the pipe end is no closer than
76mm to the chimney walls. The length of any
horizontal run of flue pipe must not exceed 150mm.
It is essential that all connections between the stove
and chimney-flue are sealed and made airtight.

Make provision to access the chimney/flue system for
cleaning and the removal of debris. If there is no
existing chimney then either a prefabricated block
chimney in accordance with Building Regulations
Approved Document J, or a twin-walled insulated
stainless-steel flue to BS4543 can be used. These
chimneys must be fitted in accordance with the

manufacturer’s instructions and Building Regulations.

New masonry and flue block chimneys must meet the
requirements of Building Regulations Document J. Any
connecting flue pipe systems must also meet these
regulations.

Please check the suitability of the fireplace and/or
surround for use with this appliance before installing
it. If you have any doubts about the suitability of your
chimney, consult your local Dealer/Stockist or
Installation Engineer. Both the chimney and flue pipe
must be accessible for cleaning and if ANY part of the
chimney cannot be reached through the stove (with
baffle removed), a soot door must be fitted in a
suitable position.

FLUE OUTLET POSITIONS (DOCUMENT J):

7

Position on Roof

Clearances to flue exit

A

At or within
600mm of the ridge

At least 600mm
above the ridge

B

Elsewhere on a roof
(Pitched or Flat)

At least 2.3 M horizontally
from the nearest point on the
weather surface and:
a) At least 1.0 M above the
highest point of intersection
between the chimney and
weather surface; or
b)at least as high as the ridge

C

Below (on a pitched
roof) or within 2.3 M
horizontally to an
opening window or
dormer

At least 1.0 M above the top
of the opening

D

Within 2.3 M of an
adjoining or
adjacent building,
whether or not
beyond the
boundary

At least 600mm above any
part of the adjacent building
within 2.3 M

A full copy of Document J can be found here:
http://www.planningportal.gov.uk/uploads/br/BR_P
DF_ADJ_2010.pdf

LEGAL REQUIREMENTS

Hunter Stoves Group requests that before installation
and/or use of this appliance that you read these
instructions carefully to ensure that all the relevant
requirements are fully understood.

These instructions cover the basic principles to ensure
satisfactory installation of the stove, although detail
may need slight modification to suit particular local
site conditions. In all cases the installation must
comply with current Building Regulations, Local
Authority Byelaws, European and National Standards
and other specifications or regulations as they affect
the installation of the stove.

It should be noted that the Building Regulations
requirements may be met by adopting the relevant
recommendations given in British Standards BS 8303,
BS 6461 and BS 7566 as an alternative means to
achieve an equivalent level of performance to that
obtained following the guidance given in Approved
Document J.

Your local Building Control Officer can advise you
regarding the interpretation of the Regulations should
there be any questions.
This appliance must be installed by a Registered
Installer (see Competent Persons Scheme) or
approved by your local Building Control Officer.

All works undertaken must be carried out with due
care and attention to meet the requirements of the
Health & Safety code of practice and any other
legislation that may have been introduced since the
publication of these instructions.

Competent Persons Scheme

Members of the following schemes may self-certify
the installation of this stove. If the installer is not a
member of one of these schemes, your local Building
Control Department must approve the installation.

Scheme

Web address

Telephone

APHC (Association of
Plumbing and Heating
Contractors
(Certification) Limited

www.aphc.co.uk

02476 470 626

Building Engineering
Services Competence
Accreditation (BESCA
Limited)

www.hvca.org.uk /
www.besca.org.uk

0800 652 5533

HETAS Ltd (Heating
Equipment Testing
and Approval Scheme)

www.hetas.co.uk

01462 634721
NAPIT Registration Ltd

www.napit.org.uk

0870 444 1392

NICEIC Group Ltd

www.niceic.org.uk

0800 013 0900

Air Supply

The room or space containing this appliance does not
need a permanent, unobstructed air opening.

If a draught stabiliser is fitted, the air opening should
be at least 1410mm².

Due consideration should be given to air requirements
for any other appliance in the same room or space.

Any air opening must be kept clear from blockage or
obstruction.

Hearth/ Material Clearances

Hearth constructions must comply with the current
building regulations.

Your stove must be installed on a floor with adequate
load-bearing capacity, otherwise suitable measures
should be taken.

If the existing construction does not meet this pre­requisite, suitable measures (e.g. load distributing
plate).

Care should be taken to level the stove using the
adjusting screws in the feet.

8

Material Clearances

Minimum Distances to
Combustible Material

All

Behind the stove

15mm (Behind

heat shield)

At the side of the stove

180mm (If side

wall protrudes in

front of stove

In front of the stove

900mm

Note: combustible material refers to any material that
will degrade when subjected to heat e.g. plaster.

No combustible material must be stored underneath
the stove.

FIREPLACE RECESS ALL

Plan view:

Side view:

The stove can be recessed in a suitable sized fireplace
but a permanent free air gap of at least 150mm on
top and 50mm at the sides (although we recommend
150mm for the sides and 50mm at the back of the
stove to obtain maximum heat output and for access
to the rear of the stove.)
The hearth should extend at least 300 mm from the

front of the stove. The stove should stand wholly
above a solid, non-combustible hearth, at least 125
mm thick (this may include the thickness of a solid
floor and a non-combustible decorative hearth).

FREE-STANDING BOTH

Plan view:

Side view:

If the stove is not to stand in a recess, it may stand
wholly above a hearth made of non-combustible
board / sheet material or tiles, at least 10mm thick.
The hearth should extend at least 150 mm from the
sides and rear of the stove, and at least 300 mm from
the front of the stove.

All walls shown in the above diagrams are non­combustible unless otherwise indicated. All non­combustible walls closer than 300mm to the stove
should be at least 75mm thick.

Note: To achieve the specified distances to
combustible materials, twin-wall insulated flue pipe
must be used, starting no higher than 105mm above
the stove.

Change in level to
mark safe perimeter

300 mm

50 mm

500 mm
from
jamb

150 mm

Combustible
material

125mm

Non
Combustible
150mm