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TenburyMultifuel Stove • Model TEN1MF

To be retained by the user for future reference

Thank you for purchasing an ACR Heat Products stove

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Document TEN1MF 0101 • Version 1 Date 01/09/15

Serial Number:

MULTIFUEL

SMOKE EXEMPT

AIRWASH SYSTEM

10YEAR

10YEARWARRANTY

Tenbury insert install manual 1015-3 03/12/2015 09:57

Important!

• The installation of this appliance mustcomply with current BuildingRegulations and local regulations,including those referring to nationaland European standards.

• Do not operate this appliance if itbecomes damaged.

• Improper use, maintenance or fittingparts other than those approved bythe manufacturer could lead to theappliance becoming damaged orunsafe which in turn could lead topersonal injury or damage to theproperty and will void the warranty.

• The appliance must not be modified inanyway unless authorised by ACRHeat Products Ltd.

• The appliance should be inspectedregularly to ensure the airways areclean and free from obstruction andthe chimney swept at least once ayear.

• The external surfaces of thisappliance will be very hot to the touchwhen in operation and due care willneed to be taken when operating theappliance to ensure safety. A fireguard should be fitted if it is likely thatthe elderly, infirm or children maycome into contact with the appliance.

• This appliance must not be used asan incinerator.

• This appliance has been designed forintermittent operation.

To ensure that you gain the most from your purchase, pleasetake 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 fuelappliances. 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: 0845 6345626

Before installation, please ensure that the correct model has been supplied.

Please make a note of the serial number of your appliance in the spaceprovided on the front cover of this manual as this will be requested if you

require technical assistance in the future.

Please also ensure that the commissioning checklist at the rear of the manualis completed in full.


Tenbury Specifications

*** Please note that Building Regulations Document J advises that additional permanent air supply isrequired for appliances with an output of above 5Kw.

With modern properties additional air may be required as Document J suggests that adequate airwould be a benefit.

• If design air permeability ≥5.0m³/ (h.m²) then 550mm²/kW of appliance rated output above 5kW

Or

• If design air permeability ≤5.0m³/ (h.m²) then 550mm²/kW of appliance rated output

• If in doubt, please consult your registered installer for advice.

Nominal heat output 5 kW - Wood 4.8 kW - Smokeless Fuel

Chimney draft required 12Pa

Height 550 mm (Internal Box) 588 mm (External Trim)

Width 440 mm (Internal Box) 472 mm (External Trim)

Depth 334 mm (Recessed) 339 mm (External Trim)

Weight 60 kg

Air Requirement N/A ***

Flue Mass Gas Flow 3.2g/s - Wood 5.7g/s - Smokeless Fuel

CO @ 13% O2 0.23 Wood Vol% 0.21 Smokeless Fuel Vol%

Mean Flue Gas Temperature 263°C - Wood 276°C - Smokeless Fuel

Efficiency 82.9% - Wood 73.8% - Smokeless Fuel

Log Length Up To 250 mm

Hearth Temperature 152ºC

DO NOT INSTALL IN A ROOM CONTAINING AN EXTRACTOR FAN UNLESSTHE APPLIANCE HAS BEEN CORRECTLY TESTED IN ACCORDANCE

WITH BUILDING REGS DOC J

473334

588

550

396

11.5


The Clean Air Act 1993 and Smoke Control Areas

SMOKE EXEMPT

Under the Clean Air Act local authorities

may declare the whole or part of the

district of the authority to be a smoke

control area. It is an offence to emit

smoke from a chimney of a building,

from a furnace or from any fixed boiler if

located in a designated smoke control

area. It is also an offence to acquire an

"unauthorised fuel" for use within a

smoke control area unless it is used in

an "exempt" appliance ("exempted"

from the controls which generally apply

in the smoke control area).

The Secretary of State for Environment,

Food and Rural Affairs has powers

under the Act to authorise smokeless

fuels or exempt appliances for use in

smoke control areas in England. In

Scotland and Wales this power rests

with Ministers in the devolved

administrations for those countries.

Separate legislation, the Clean Air

(Northern Ireland) Order 1981, applies in

Northern Ireland. Therefore it is a

requirement that fuels burnt or obtained

for use in smoke control areas have

been "authorised" in Regulations and

that appliances used to burn solid fuel

in those areas (other than "authorised"

fuels) have been exempted by an Order

made and signed by the Secretary of

State or Minister in the devolved

administrations.

• The Tenbury

(TEN1MF) has been

recommended as

suitable for use in

smoke control areas

when burning wood.

Further information on the requirements

of the Clean Air Act can be found here:

http://smokecontrol.defra.gov.uk

Your local authority is responsible for

implementing the Clean Air Act 1993

including designation and supervision of

smoke control areas and you can

contact them for details of Clean Air Act

requirements.

CO Alarms

It is required by building regulations that

whenever a new or replacement

wood/solid fuel or biomass appliance is

installed in a dwelling a carbon monoxide

alarm to BS EN 50292:2002 must be fitted

in the same room as the appliance.

The alarm should be installed according

to the alarm manufacturers instructions

and should not be considered a substitute

for the appliance being installed

incorrectly or regular maintenance of the

appliance or flue system.


Installation Instructions

Location of the unitThe appliance must stand on a non-combustible constructional hearthwhich is at least 125mm thick with theminimum dimensions as shown in theopposite diagram (please see Buildingregs. Document J for furtherinformation).

If the appliance is to be fitted in a raisedapplication, due consideration shouldbe given to extending the depth of thesuperimposed hearth to safely containany falling embers or logs.

The hearth and building constructionmust be of a suitable material to complywith current building and local authorityregulations. The fabrication of theconstruction must have a suitable loadbearing capacity for the appliance andhearth.

If in any doubt, please consult acompetent person for advice beforeproceeding.

150mm

150mm

225mm

ConstructionalHearth

SuperimposedHearth

500mm 772mm

125mm

Important informationBefore installation and/or use of thisappliance please read these instructionscarefully to ensure that all requirementsare fully understood.

This appliance must be installed by aregistered engineer, or approved bybuilding control, failure to do so mayendanger life and property.

All the below instructions should work inconjunction with building regulationsdocument J, if there is a variation themost stringent requirement should beadhered to.

AsbestosThis appliance contains no asbestos, ifthere is the possibility of disturbing anyasbestos in the installation of thisappliance then specialist advice mustbe sought and appropriate precautionstaken.

Metal Parts This appliance may contain sharp metaledges, take care when installing orservicing this appliance to avoidpersonal injury. Please use appropriatepersonal protective equipment at alltimes.

Each installation is unique to theproperty, the information contained inthis manual may not give exactinstallation requirements for yourinstallation.

The installation must comply withBuilding Regulations, EuropeanStandards and Local authority bylaws.

Fire Cement Some types of fire cement are causticand should not be allowed to come intocontact with the skin. In case of contactwash immediately with plenty of water.


Minimum BuildersOpeningFor ease of installation the buildersopening may be made slightly largerthan the appliance dimensions, pleasesee diagram opposite.

The construction of fireplace recessshould be of a suitable non-combustiblematerial such as brick or concreteblockwork, and have a minimumthickness of 200mm to the sides andrear of the appliance, unless it is a backto back recess within the same property.

Please refer to building regs document Jfor more information.

Clearances tocombustible materials

Installation into a falsechimney breast

All parts of the false studwork chimneymust be constructed of a non-combustible material i.e. metalstudwork.

Do not use combustible materials withinthe chequered area (150mm to the sidesof the appliance and 300mm to the rearof the appliance).

Do not fill the area surrounding theappliance with insulating material, thevoid around the appliance must beventilated to prevent a buildup of excessheat.

There must be minimum ventilating areaat both high and low levels of 50 cm²each, the vents should take ambient airfrom the room in which the appliance is

installed and return the warm air backinto the same room environment.

Consideration should also be taken toprovide adequate access to theconnecting flue for service andmaintenance purposes.

384mm

560mm

420mm

150mm 150mm

300m

m


Installation into a woodendecorative fireplace

If the appliance is to be fitted inconjunction with a combustible firesurround the minimum clearances mustbe maintained, please see diagramopposite (150mm to the sides and500mm above) these dimensions shouldbe adhered to from any point of theappliance to any combustible material.

If granite, stone, marble or any othernon-combustible decorative material isto be used as a superimposed hearthand back panel provision should bemade for heat and expansion. The useof a slabbed and split back panel andhearth is recommended, if in doubtplease seek the recommendation of acompetent person or manufacturer ofthe above mentioned product.

Curtains and soft furnishings should be

a minimum of 1m away from theappliance.

We do not recommend that plasmatelevisions and expensive artwork arehung over the fireplace.

Flue RequirementsThe flue must comply with currentBuilding Regulations Document J.

The construction of masonry, flue block,insulated flue systems and flexible flueliners must comply with themanufacturers instructions at all times.

The flue must be:

A 150mm flue diameter isrecommended, 125mm may beused if the appliance still has itssmoke exempt stop in place

In sound condition and providesufficient draft (minimum 12pa)

Suitable for use with solid fuelburning appliances

Be able to clean the entire length ofthe flue system without removal ofthe appliance

Free from deposits

Well insulated

At least 4.5m in height from hearth

level to termination, with no more

than 4 x 45º bends in any one flue

system and have a maximum

horizontal length of no more than

20% of the overall vertical height

The termination should be sited as

to avoid a negative pressure zone

The flue must not be:

Shared with other appliances

Weight bearing on the appliance

A smaller diameter than the

appliance flue collar size (125mm)

150mm 150mm

500mm


Installation of the unitThe appliance is supplied pre-assembled with the flue spigot in thetop exit position and the Smoke Exemptstop in place.

The Smoke Exempt stop must not be

removed unless the appliance is

installed in a non-smoke exempt area

and this action should only be

undertaken by a competent person.

To remove the smoke exempt stop,remove the inner combustion chamberfrom the outer convection box, removethe smoke exempt stop and reassemblethe appliance.

This appliance cannot be installed witha rear flue option.

Remove the trim by pulling it towardsthe front of the appliance.

Remove the vermiculite baffle bylifting and rotating through thecombustion chamber.

Remove the 6 x 10mm bolts holdingthe flue collar disc in place.

Remove the flue disc and flue collarthrough the combustion chamber.

Slide the appliance into the preparedopening and affix using the predrilledfixing holes located in the flange.

Connect the flue adaptor and liner tothe flue collar and seal using anappropriate sealant.

Push the adaptor, liner and freefloating flue collar assembly upwardsand reconnect the flue collar disc inplace with the 6 x 10mm bolts.

Replace baffle and trim.

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Operating your stove

Using your appliance for thefirst time

• To allow the appliance to bed in, andfixing glues and paint to fully cure,only fire the appliance using kindlingand just get hot for at least three fires.

• Before lighting the next small fireplease allow the appliance to returnback to room temperature.

• During these first small fires you mayexperience a haze and unpleasantsmell as the paint cures, do not touchthe paint and keep the room wellventilated.

Please note that during the first firing,we recommend a small fire is lit andthat you slowly increase thetemperature to enable the variousparts to expand normally.

You may also experience fumes and ahaze being given off by the stove duringthe first firing and possibly for the nextcouple of firings as the paint cures. Thisis normal but please ensure that theroom is well ventilated during thisperiod.

The appliance should not be operated inmild weather with smokeless fuel. Under

Always ensure that the ash draw is fully located before operation ofthe appliance


certain weather circumstances e.g. fogthe chimney will not draw sufficientlyand could cause asphyxiation. Eitherawait better weather conditions or burnwood only.

In the rare event of a malfunction due tooverheating or a chimney fire, the airslides should be shut down completelyand the fuel allowed to burn out. In theevent of a chimney fire, once the airslides have been closed completely, dial999 for assistance. If the appliance hasoverheated, the appliance and flue willneed to be inspected for any damagebefore it can be operated again.

Recommended Fuels

Wood: hardwood such as ash, oak andbeech which have been cut for at least 2years and stored under shelter. The logsshould have a maximum moisturecontent of 20%. Maximum log length250mm, maximum width 125mm.

Smokeless Fuels: below 20%Petroleum coke content such asAnthracite, Phurnacite, Ancit suitable foruse with a closed heating appliance.

Prohibited FuelsGreen wood: i.e wood which is lessthan 2 years old with a moisture contentof above 20%

Recovered wood: i.e pallets, railwaysleepers etc. These will have beenchemically treated and will pollute theatmosphere and possibly overheat theappliance.

Housecoal or Bituminous coal: thesefuels will soot up the airways of thestove and possibly overheat theappliance.

Petroleum Based Coke: over 20%content - this will overheat the applianceand possibly damage the unit.

Liquid fuels.

Always check with your dealer or directly with the manufacturer as using theincorrect fuel may invalidate your guarantee and damage your appliance.

Instructions for use with wood

• Open the secondary air slider to theleft hand side of the door, and openthe primary air slider to the right handside of the door by fully pushing thelevers inwards.

• Lay firelighters or rolled upnewspapers on the grate and add asmall amount of kindling wood to thetop. Place 1 or 2 small logs on thetop.

• Light the newspaper or firelightersusing a long taper and push the doorclosed but do not engage the lockinghandle fully.

• When the fire is burning fiercely, after acouple of minutes add more logs andclose the door.

• When the fire has become established,close the primary air, to the right handside of the door, by pulling the leverfully outwards.

• The burning rate can be altered bymoving the secondary air slider, to theleft hand side of the door - pull thelever outwards to close down andpush the lever inwards to increase theburn rate.

• Care should be taken to ensure thatthe logs are not placed higher than thelog guard allows.


Instructions for use withsmokeless fuel

• Open the secondary air slider to theleft hand side of the door, and openthe primary air slider to the right handside of the door by fully pushing thelevers inwards.

• Lay firelighters or rolled upnewspapers on the grate and add asmall amount of kindling wood to thetop. Place a small quantity ofsmokeless fuel on top.

• Light the newspaper or firelightersusing a long taper and push the doorclosed but do not engage the lockinghandle fully.

• When the fire is burning fiercely, after acouple of minutes add moresmokeless fuel and close the door.

• When the fire has become established,close the secondary air by 50%, to theleft hand side of the door, by pullingthe lever outwards.

• The burning rate can be altered bymoving the primary air slide, to theright hand side of the door - pull thelever outwards to close down andpush the lever inwards to increase theburn rate.

• Care should be taken to ensure thatthe firebox is not overfilled withsmokeless fuel - it should be no higherthan the log guard.

Re-fueling

When refueling the stove always refuelonto a bed of hot embers, fully openthe secondary and primary air controlsuntil the new fuel is well alight, beforeadjusting the air controls for the desiredsetting.

If there is insufficient burning material inthe firebed to light a new fuel charge,

excessive smoke emission can occur.Refueling must be carried out onto asufficient quantity of glowing embersand ash that the new fuel charge willignite in a reasonable period. If there aretoo few embers in the fire bed, addsuitable kindling to prevent excessivesmoke.

Fuel overloading

Never overload the stove - it will workvery well with two medium sized logs.The amount of fuel specified in thismanual should not be exceeded,overloading can cause excess smoke.

Operation with door left open

Operation with the door open can causeexcess smoke and overfirring of theappliance. The appliance must not beoperated with the appliance door leftopen except as directed in theinstructions.

Never leave the stove unattendeduntil the new fuel is well alight.

Persistent fume emission is dangerousand must be investigated.

If fume emission persists, open doorsand windows to ventilate the room andlet the fire die out. Have the chimneyinspected for blockages and clean ifrequired. Do not relight the fire until thecause has been found. We recommendthat you seek professional advice.

This appliance has been designed to beburned with the door closed at all timesother than when refueling.

It should not be operated as an openfire.

Typical refueling intervals for wood is 1hour and smokeless fuel is 2 hours.


Maintenance

Daily Maintenance• The grate should be cleaned regularly

and the ash pan emptied daily. Never allow the ash in the ashpan tooverfill allowing ash to be in contactwith the underside of the grate.This will overheat the grate and causepremature wear and distortion.

Periodic Maintenance • The chimney should be swept at least

once a year together with the flue pipeconnection. Care should be taken toensure that there is not a build up ofsoot on the baffle and in the airways ofthe appliance.

• If the appliance has not been operatedfor long periods, the flue should beinspected and swept before use toensure there are no blockages withinthe flue.

• The internal vermiculite panels of theappliance should be checked regularlyfor soundness. If any wear and tear isfound, we recommend these parts arereplaced immediately.

• Check the rope door seals are intactand are not worn. These should bereplaced on an annual basis to ensurethe correct operation of this appliance.

• The glass can be cleaned using a softdamp cloth and window cleaner or astove glass cleaner (available fromyour local stockist)

Use only replacement partsrecommended by the manufacturer.

We recommend that the appliance is serviced annually by a competentengineer to ensure it’s continued safe operation.


Troubleshooting

Fire difficult to • Green wood / wet wood Use hardwood logs with a maximumstart / goes out moisture content of 20%

• Logs are too large Use kindling and small logs to start the fire and once established use split logs

• Not enough primary air Open air control

• Insufficient draft Check the flue is not obstructed

Fire burns too quickly • Too much draft Reduce the air control

• Excessive draft Install a draft stabiliser

Smokes on initial • Flue is cold Burn paper and kindling to increase lighting heat in flue

Smokes while burning • Insufficient draught Check the flue is not obstructed

Low heat output • Poor quality wood Use seasoned Hardwood (this has a Higher calorific value)

Problem Probable Cause Action Recommend

Commissioning Check List

Ensure the serial number has been recorded on the front of this manual for anyfuture use

Ensure the door seals are in good condition and that the glass is secured correctlyin the door (do not over tighten the glass as this will prohibit its expansion andcould cause the glass to crack)

Ensure that all internal components are fitted correctly (these may have shifted intransit)

Ensure that the appliance operates correctly during the first firing

Ensure the customer is aware that fumes may be given off during the first firingsas the paint cures

Advise the customer on the safe operation of the appliance

Leave the instruction manuals, operating tool and glove for the customer’s use.

Record the flue draught reading of the appliance

Please tick boxes when each procedure is completed


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16 7 15

38 9 2 14 12 13

417

216

5

1

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Parts Information

1 42010000 Combustion chamber 2 41070002 Multifuel Grate 3 42020000 Main Door 4 42041007 Secondary air slider 5 42041006 Primary air slider 6 42041002 Bottom door bracket 7 42041003 Top door bracket 8 42035000 3 Sided trim 9 42034000 Log guard 10 42033000 Outer convection box 12 42041008 Left internal heat plate 13 42041008P Right internal heat plate 14 42032000 Ashpan 15 42031000 Flue Collar 16 42041001 Flue sealing disc 17 42041005 Bottom hinge pin 18 42040000 Vermiculite set 19 M6 x 12 Securing bolts 20 M6 x 10 Securing bolts 21 M6 x 16 Securing bolts 22 M6 x 10 Securing bolts

Diagram No. Part No. Description


Warranty Information

The specifications within this document are provided for information purposesonly and are under no circumstances binding.

10YEAR

10YEARWARRANTY

With the aim of constantly improving our

products, all modifications considered

necessary may be made without notice.

This manual is correct at time of

printing.

Our appliances are guaranteed

against faults and hidden defects

subject to the following conditions:

The appliance must have been installed

by a registered competent installer (e.g.

HETAS) or inspected by local authority

Building Control.

The appliance must be installed and

operated in accordance with our

instruction manual.

The guarantee is for a period of 10 years

on the appliance body from the date of

purchase.

The following components are

considered as consumables and are

excluded from the guarantee:

• Grates

• Rope seals

• Ashpan

• Internal vermiculite panels

• Glass

• Baffle plates

• log guard

Your statutory rights are not affected by

this warranty.

In the unlikely event of a warranty claim, please return the claim form to:

ACR Heat Products Limited, Unit 1, Weston Works,

Weston Lane, Tyseley, Birmingham, B11 3RP, England.

• Tel: 0121 706 8266 • Fax: 0121 706 9182

• E-mail: [email protected] • www.acrheatproducts.co.uk


Warranty Claim Form

Customer Name:

Customer Address:

Postcode:

Daytime Tel: Mobile Tel:

Model Name: Model Number:

Serial Number: Date of purchase:

Date of installation:

Installer’s Name and address:

Installer’s Registration Number:

HETAS / Building Control Certificate Number: (if not installed by a registered competent installer)

Dealer Name and address:


ACR Heat Products Limited, Unit 1, Weston Works,

Weston Lane, Tyseley Birmingham B11 3RP, England.

• Tel: 0121 706 8266 • Fax: 0121 706 9182

• E-mail: [email protected] • www.acrheatproducts.co.uk


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