ACR Heat Products The Astwood AW1MF User manual

TECHNICAL MANUAL
The Astwood
Multifuel Stove
Model AW1MF
To be retained by the user for future reference
Serial Number ……………………………. Document AW1MF 0101
Thank you for purchasing an ACR Heat Products stove.

To ensure that you gain the most from your purchase, please take a few
minutes to read through this manual before lighting the appliance for the
first time.
SINCE APRIL 2002 ONLY REGISTERED COMPETENT INSTALLERS CAN INSTALL
SOLID FUEL APPLIANCES. INSTALLATIONS CARRIED OUT BY NON-REGISTERED
INSTALLERS MUST BE INSPECTED BY LOCAL AUTHORITY BUILDING CONTROL.
FOR MORE INFORMATION PLEASE CONTACT HETAS AT;
www.hetas.co.uk OR TELEPHONE [phone]
•The installation of this appliance must comply with current Building
Regulations and local regulations, including those referring to
national and European standards need to be complied with when
installing the appliance.
•Do not operate this appliance if it becomes damaged.
•Improper use, maintenance or fitting parts other than those
approved by the manufacturer could lead to the appliance
becoming damaged or unsafe which in turn could lead to personal
injury or damage to the property and will void the warranty.
•The appliance must not be modified in anyway unless authorized by
ACR Heat Products Ltd.
•The appliance should be inspected regularly to ensure the airways
are clean and free from obstruction and the chimney swept at least
once a year.
•The external surfaces of this appliance will be very hot to the touch
when in operation and due care will need to be taken when
operating the appliance to ensure safety. A fire guard should be
fitted if it is likely that the elderly, infirm or children may come into
contact with the appliance.
•This appliance must not be used as an incinerator.
•This appliance has been designed for intermittent operation.
Before installation, please ensure that the correct model has been
supplied. Please also make a note of the serial number of your appliance
in the space provided on the front cover of this manual as this will be
requested if you require technical assistance in the future.

ASTWOOD SPECIFICATIONS
Nominal heat output ………… 7 kW – WOOD 6.8 kW – SMOKELESS FUEL
Chimney draft required ……… 12Pa
Height …………………………… 595 mm
Width ……………………………. 545 mm
Depth ………………………….... 415 mm
Weight …………………………… 80 kg
Direct Air Intake………………… 80mm
Air Requirement ……………….. 11cm/sq
Flue Mass Gas Flow …………… g/s – WOOD g/s – SMOKELESS FUEL
Mean Flue Gas Temperature .. °C – WOOD °C - SMOKELESS FUEL
Efficiency ………………………... %
Log Length ………………………. 400 mm
*** Please note that Building Regulations Document J advises that
additional air supply is required for appliances with an output of above
5Kw. With modern properties additional air may be required as
Document J suggests that adequate air would be a benefit. If in doubt,
please consult your registered installer for advice. NOTE: Extractor fans
when operating in the same room or space as the appliance may cause
problems.
Location of the unit
Clearances to non-combustible materials
There must be a minimum clearance of 150mm at each side of the
appliance. A clearance of 150mm is required at the back of stove (if the
rear wall has a thickness of 200mm or more this measurement can be
reduced to 50mm) A minimum clearance of 150mm is required above the
appliance.
Clearances to combustible materials
There must be a minimum clearance of 450mm at each side and 750mm
at the rear of the appliance from any combustible materials. If using
single wall flue pipe, there must be a clearance of at least 3 times the
diameter of the flue pipe (e.g 125mm diameter pipe = 375mm minimum
clearance) from any combustible materials e.g wooden beam.
Curtains and soft furnishings should be a minimum of 1m away from the
appliance.
Adequate space should be provided for servicing the appliance.

We do not recommend that plasma televisions and expensive artwork are
hung over the fireplace.
Please remember that this appliance has been designed to provide heat
and if installed into a recess enough space should be left around the
appliance to enable the heat produced to rise and escape from the
recess back into the room.
Hearth Requirements
The appliance must stand on a level fireproof hearth with a minimum
thickness of 12mm. The hearth temperature created by this stove is below
100˚C. The hearth must protrude at least 300mm in front of the appliance
and 150mm either side of the appliance.
The appliance shall be installed on a floor with an adequate load bearing
capacity. If an existing construction doesn’t meet with prerequisite,
suitable measures (e.g. load distributing plate) shall be taken to achieve it.
Flue Requirements
The chimney must comply with current Building Regulations. Provision
must be made to provide access for cleaning the appliance, the flue gas
connector and the chimney flue.
The flue must be:
•In sound condition and provide sufficient draft
•Suitable for use with solid fuel burning appliances
•Free from deposits
•Well insulated
•At least 4.5m in height
The flue must not be:
•Shared with other appliances
•Weight bearing on the appliance
•A smaller diameter than the appliance flue collar size (125mm)

Assembly of the unit
The appliance is supplied assembled with the flue spigot in the top exit
position. If you intend to install the appliance using a rear flue
connection, the blanking plate should be swapped over as follows:
•Remove the internal baffle plate
•Remove the blanking plate retaining bar internally.
•Remove the flue spigot from the top exit by removing the securing
bolts and rope seal.
•Refit the rope seal and flue spigot to the rear exit and secure with the
bolts. Seal with fire cement.
•Refit the blanking plate to the top exit using the rope seal and retaining
bolts.
Maintenance
The chimney should be swept at least once a year together with the flue
pipe connection. Care should be taken to ensure that there is not a build
up of soot on the baffle and in the airways of the appliance.
If the appliance has not been operated for long periods, the flue should
be inspected and swept before use to ensure there are no blockages
within the flue.
The grate should be cleaned regularly and the ashpan emptied daily.
NEVER ALLOW THE ASH IN THE ASHPAN TO OVERFILL ALLOWING ASH TO BE
IN CONTACT WITH THE UNDERSIDE OF THE GRATE. This will overheat the
grate and cause premature wear and distortion.
The internal vermiculite panels of the appliance should be checked
regularly for soundness. If any wear and tear is found, we recommend
these parts are replaced immediately.
Check the rope door seals are intact and are not worn. These should be
replaced on an annual basis to ensure the correct operation of this
appliance.
The glass can be cleaned using a soft damp cloth and window cleaner or
ACR stove glass cleaner (available from your local stockist)
Use only replacement parts recommended by the manufacturer.
We recommend that the appliance is serviced annually by a competent
engineer to ensure it’s continued safe operation.