Yeoman YMMB User Manual
Yeoman CL Milner Brick
Inset Convector Stove
MODELS: YMMB
Instructions for Use,
Installation and Servicing
For use in GB & IE (Great Britain and Republic of Ireland).
This appliance has been certified for use in countries other than those stated. To install this appliance in these countries, it is essential to obtain the translated
instructions and in some cases the appliance will require modification. Contact Yeoman for further information.
IMPORTANT
This appliance will become hot whilst in operation, it is therefore recommended that a suitable guard should be used for the
protection of young children, the elderly or infirm. Do not attempt to burn rubbish in this appliance.
Please read these Instructions carefully before installation or use.
Keep them in a safe place for future reference and when servicing the fire.
The commissioning sheet found on page 3 of these instructions should be completed by the Installer.
PM559 - Issue 1 (June 2011)
COVERING THE FOLLOWING MODELS:
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YMMB
APPLIANCE COMMISSIONING CHECKLIST 3
USER INSTRUCTIONS 4
General Points 4
Warning 5
Using the Appliance for the first time 5
Recommended Fuels 6
Lighting the Appliance 6
Running the Appliance 7
Burning Tips 8
Ash Removal 9
Extended Burning 9
Over-Firing 9
Chimney Fire 9
General Cleaning 10
Cleaning Glass 10
Chimney Sweeping 10
Care of Stove 10
Seasonal Use 11
Troubleshooting Tips 11
Smoke Control Kit 11
INSTALLATION
TECHNICAL SPECIFICATION 12
COMMISSIONING 23
MAINTENANCE & SERVICING 24
Annual Service 24
Removal of Log Guard 25
Removal of Baffle 25
Removal of Grate 25
Removal of Fire Bricks 25
Fitting a New Door Glass 25
Fitting a New Door Seal 26
Adjusting The Door Catch 27
SPARE PARTS 28
SERVICE RECORDS 30
EC DECLARATION OF CONFORMITY 31
Standard Features 12
Packing List 12
Dimensions 13
SITE REQUIREMENTS 14
Flue & Chimney 14
Flue Outlet Positions 15
Minimum Hearth Dimensions 15
Milner Brick Opening 16
Fire Surround Clearances 16
PRE-INSTALLATION 17
Flue 17
Ventilation 17
Fitting Appliances on a Boat 18
INSTALLATION INSTRUCTIONS 19
Legal Requirements 19
Installing the Appliance 19
Removal of Door 20
Removal of Log Guard 20
Fitting & Removal of Baffle 20
Fitting & Removal of Grate 21
Fitting & Removal of Cleanburn Chamber 22
Fitting & Removal of Firebricks 22
CO Alarms 22
This appliance has been approved by HETAS Ltd.
Wa r r a n t y
Your Yeoman retailer provides you with a Two Year Warranty
for your new product. However, this specifically excludes
naturally wearing parts or ‘consumables’ and the use of
unauthorised fuels.
Some Yeoman products will also qualify for a Five Year
Warranty on cast iron parts such as cast iron carcasses and
cast iron doors of steel bodied stoves. Again, this excludes
naturally wearing cast iron parts.
For these extended warranties to be valid your stove must
have been installed in accordance with the manufacturer’s
instructions and the second and subsequent year’s warranties
are dependant on the appliance being serviced within 12
months of installation by an appropriately qualified engineer
and annually thereafter.
Please check the WARRANTY STATEMENT on the YEOMAN
website at www.yeoman.com for up-to-date list of conditions.
2
APPLIANCE COMMISSIONING CHECKLIST
To assist us in any guarantee claim please complete the following information.
In the unlikely event of a problem, contact your installer or retailer for assistance:
Retailer appliance was purchased from
Name: .................................................................................................................................................................
Address: ...............................................................................................................................................................
............................................................................................................................................................................
Telephone number: .............................................................................................................................................
Essential Information - MUST be completed
Date installed: .....................................................................................................................................................
Model Description: ..............................................................................................................................................
Serial number: .....................................................................................................................................................
Installation Engineer
Company name: .....................................................................................................................................................................
Address: .................................................................................................................................................................................
...............................................................................................................................................................................................
Telephone number: ................................................................................................................................................................
Commissioning Checks (to be completed and signed)
Is flue system correct for the appliance YES NO
Flue swept and soundness test complete YES NO
Smoke test completed on installed appliance YES NO
Spillage test completed YES NO
Use of appliance and operation of controls explained YES NO
Clearance to combustible materials checked YES NO
Instruction book handed to customer YES NO
Signature: ....................................................................................... Print name: ...............................................................
3
USER INSTRUCTIONS
1. GENERAL POINTS
1.1 Before installation and/or use of this appliance please
read these instructions carefully to ensure that all
requirements are fully understood.
The appliance must be fitted by a registered installer*,
or approved by your local building control officer.
1.2 All local regulations, including those referring to national
and European Standards need to be complied with when
installing the appliance.
1.3 Only use for domestic heating in accordance with these
operating instructions.
1.4 Only approved fuels must be burned. Do not use with
liquid fuels or as an incinerator.
1.5 Appliance surfaces become very hot when in use. Use
a suitable fireguard if young children, elderly or infirm
persons are present. Yeoman offer firescreens, sparkguards
and hearthgate systems for protection‡. Your Yeoman
retailer can advise you about these products.
1.6 Do not place photographs, TV’s, paintings, porcelain or
other combustible items on the wall or near the appliance.
Exposure to hot temperatures will cause damage. Do not
place furniture, or other items such as drying clothing,
closer than 1m from the front of this appliance.
1.7 Extractor fans or cooker hoods must not be placed in the
same room or space as this can cause the appliance to emit
fumes into the room.
1.8 Do not obstruct inside or outside ventilation required for
the safe use of this appliance.
1.9 Do not make unauthorised changes to the appliance.
1.10 The chimney must be swept at least once a year (see User
Instructions, Section 13).
1
Data Plate
PR9024
AIR CONTROLS
Triple Air Systems
Several Yeoman appliances have triple air systems providing
cleaner burning, and greater efficiency and control (see
Diagram 2).
1) Airwash - air drawn over the window cleans the glass.
The source of Primary Combustion air when burning wood.
2) Primary Air - for use with solid fuel and to start wood
fires.
3) Cleanburn - secondary air is preheated through a heat
exchanger to combust unburned hydrocarbons, providing a
cleaner and more efficient burn.
2
Airwash
Secondary
1.11 Do not connect, or share, the same flue or chimney
system with another appliance.
SERIAL NUMBER
1.12 This number is required when ordering spare parts or
making warranty claims.
It is found on the appliance data plate (see Diagram 1).
Primary
For Air Controls see Diagram 3.
‡
In the U.K. these products must conform to the latest
edition of BS 8423, Fireguards for use with solid fuel
appliances.
If appliance is operating unattended they must conform to
the latest edition of BS 3248
*Registered on the Competent Persons Scheme (GB only)
see page 26.
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PR9146
USER INSTRUCTIONS
AIRWASH AND PRIMARY AIR CONTROLS
3
Airwash Control
Open Close
Primary Air Control
Open Close
SECONDARY AIR CONTROLS
4
Secondary Air Control
PR9025
In - Closed
Out - Open
PR9026
WARNING
Properly installed, operated and maintained, this
appliance will not emit fumes into the room. Occasional
fumes from de-ashing and refuelling may occur.
Persistent fume emission is potentially dangerous and
must not be tolerated.
If fume emission does persist:
—Open doors and windows to ventilate the room.
—Leave the room.
—Allow fire to burn out and safely dispose of fuel from
the appliance.
—Check for chimney blockage and clean if required.
—Do not attempt to relight until the cause of the emission
has been identified and corrected
If necessary seek expert advice.
—All open flued appliances can be affected by temporary
atmospheric conditions which may allow fumes to
enter the house. Because of this an electronic carbon
monoxide detector conforming to the latest edition
of BSEN50292 must be fitted in the same room as
the appliance. The existence of an alarm must not be
considered a substitute for ensuring regular servicing
and maintenance of the appliance and chimney system.
If the alarm sounds follow the instructions given under
Warning above.
DOOR HANDLE
1.13 Use a protected gloved hand to operate.
1.14 Rotate clockwise and pull to open.
Warning: Do not force the handle as damage may occur
(see Diagram 5).
DO NOT OPEN THE DOOR WITH BARE HANDS
5
Turn handle
clockwise
to open
PR9027
2. USING THE APPLIANCE FOR THE
FIRST TIME
2.1 To allow the appliance to settle, and fixing glues and paint
to fully cure, operate the appliance at a low temperature for
first few days.
2.2 Do not touch the paint during the first period of use.
2.3 During this time the appliance may give off some
unpleasant odours. Keep the room well ventilated to avoid
a build-up of fumes.
2.4 Please be aware that, during use, rope seals may discolour.
This is normal.
5
USER INSTRUCTIONS
3. RECOMMENDED FUELS
3.1 Wood Logs:
Burn only seasoned timber with a moisture content of less
than 20%. To ensure this allow cut wood to dry for 12 to
18 months.
6
Appliance Wood Length
CL Milner Brick 250mm
Poor quality timber:
— Causes low combustion efficiency.
— Produces harmful condensation.
— Reduces effectiveness of the airwash and life of the
appliance.
Wood Length
3.4 For advice on suitable solid fuels contact your local
approved coal merchant*.
A number of factors can affect the performance of the
appliance, see User Instructions, Section 6 for details.
4. LIGHTING THE APPLIANCE
4.1 For best results:
Set air controls (see diagram below).
Air Wash: Fully Open
Primary Air: Fully Open
PR9028
—Place firelighters or paper and dry kindling wood on the
grate.
Secondary Air:
Fully Open
PR9029
Do not burn construction timber, painted, impregnated
/ treated wood, manufactured board products or pallet
wood.
3.2 Solid fuel:
Burn only anthracite or manufactured briquette smokeless
fuels listed as suitable for use with closed heating
appliances.
Do not burn bituminous coal, ‘petro-coke’ or other
petroleum based fuels as this will invalidate the product
guarantee.
3.3 Fuel consumption.
As tested at nominal heat output to the requirements of EN
13229: 2001 for intermittent operation:
Fuel Consumption
Description
CL Milner Brick 1.6kg 1.2kg
*In the U.K.
•RingtheSolidFuelAssociationadvicelineon
0845 601 4406 for details
•Visittheirwebsiteatwww.solidfuel.co.uk
Kg/hour
Wood
Kg/hour
Briquette
Smokeless fuel
—Light the paper or firelighters (see Diagram 7).
7
—Leave the door slightly open as the fire establishes and
the glass warms to avoid the build-up of condensation.
—Add larger pieces of wood. Too many logs may smother
the fire.
Do not load fuel above the log guard and the secondary
combustion inlets at the back of the firebox
(see Diagram 8).
—Do not refuel when a large amount of flame is
present in the firebox as this could cause smoke or
flames to spill into the room.
6
USER INSTRUCTIONS
8
Air Inlets
Log Guard
PR9033
—Close the door.
Do not leave the door open as this could over-fire and
damage the appliance.
5. RUNNING THE APPLIANCE
5.1 Burning Wood:
—Close the Primary Air control and use the Airwash to
control the temperature (see Diagram 9).
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5.5 When in use, burning the appliance at a high temperature
for a short period also reduces tars and creosotes.
WARNING: DO NOT OPERATE THE APPLIANCE WITH
THE PRIMARY AIR CONTROL OPEN FOR LONG
PERIODS OF TIME AS THIS COULD CAUSE OVERFIRING AND MAY CAUSE PERMANENT DAMAGE.
5.6 Burning Solid fuel:
—Set air controls (see diagram below).
Air Wash: 50% Open
Primary Air: 100% Open
PR9031
5.7 De-ash the firebed before re-fuelling (see User Instructions,
Section 7).
Open the Primary Air Control fully to establish a glowing
bed before adding new fuel.
Secondary Air:
Fully Closed
PR9032
Air Wash:
Adjust
PR9030
—Wood burns best on a bed of ash (approx. 25mm (1")
deep).
—Rake the embers evenly over the firebed and open
the Airwash control fully for a few minutes before
re-fuelling.
—Do not close the Secondary Air control when
burning wood.
5.2 Burn new logs at a high temperature for a few minutes
before adjusting the Airwash control. Refuel little and often
for clean, efficient burning.
5.3 Experience establishes settings to suit personal preferences.
5.4 Do not burn large amounts of fuel with the Airwash control
closed for long periods of time. This reduces the glass
cleaning effect and causes tars and creosotes to build-up in
the appliance and flue system.
Burn new fuel at a high temperature for a few minutes
before adjusting the Primary Air Control to the desired
setting.
Refuel little and often for clean, efficient burning.
5.8 Experience establishes settings to suit personal preference.
5.9 Do not burn large amounts of fuel with the Primary Air
Control on a low combustion setting for long periods of
time. This reduces the glass cleaning effect of the Airwash
and causes tars and creosotes to build-up in the appliance
and flue system.
5.10 When in use, burning the appliance at a high temperature
for a short period reduces tars and creosotes.
5.11 Only anthracite or smokeless fuels suitable for use in
closed appliances must be burned in this appliance.
5.12 Do not burn bituminous coal, ‘petro-coke’ or other
petroleum based fuels as this invalidates the product
guarantee.
5.13 Do not load fuel above the log guard and the Secondary
Air Inlets at the back of the firebox (see Diagram 8).
—Do not refuel when a large amount of flame is
present in the firebox as this could cause smoke or
flames to spill into the room.
7
USER INSTRUCTIONS
6. BURNING TIPS
6.1 Fuel Quality (Wood)
Use wood with a moisture content of less than 20%.
Seasoned logs have the bark beginning to lift and peel away
and cracks radiating from the centre. They feel lighter than
fresh cut wood of a similar size and sound hollow when
struck against each other. Logs should not feel damp or
have moss or fungal growths.
Symptoms related to wet wood:
—Difficulty starting and keeping a fire burning well.
—Smoke and small flames.
—Dirty glass and/or Firebricks.
—Rapid creosote build-up in the chimney.
—Low heat output.
—Short burn times, excessive fuel consumption and blue/
grey smoke from the chimney.
Burn at a high temperature for a short period each day
to avoid large build-ups of tars and creosotes within the
appliance and the flue system.
Use Yeoman Protector chimney cleaner to reduce this
problem.
6.2 Fuel Quality (Solid Fuel)
Draught is caused by the rising hot air in the chimney when
the appliance is lit.
Symptoms of poor performance related to flue draught
include:
—Excessive fuel consumption (high flue draught).
—Poor burning control and/or overheating (high flue
draught).
—Wind noise from air controls (high flue draught).
—Difficulty getting a fire going and keeping it burning well
(low flue draught).
—Low heat output (low flue draught).
—Smoke entering room when doors are opened (low flue
draught).
The construction, position, size and height of the chimney
all affect the performance of the flue draught.
Other factors effecting the flue draught include:
—Nearby trees or buildings causing turbulence.
—Outside temperature.
—Outside weather conditions.
—Incorrect additional ventilation to building.
—Blocked flue or chimney.
For advice on the correction of persistent flue problems
consult a qualified heating engineer before continuing to
use the appliance.
Use recommended solid fuels approved for use with closed
appliances.
Symptoms related to unsuitable fuels include:
—Difficulty starting and keeping a fire burning well.
—Smoke and small flames.
—Dirty glass and/or fire bricks.
—Short life span for grate, baffle and internal firebricks.
—Permanent staining of glass.
6.3 Air inlets puffing smoke
Combustion gases can build up in the firebox and ignite
as small explosions, causing smoke to puff out of the air
inlets and other openings. This occurs if the air controls
are shut soon after adding new fuel to a very hot fire. Stop
by opening the air controls to increase combustion air and
burning rate.
CAUTION: Shutting down a hot appliance shortly after
refuelling, and before the fire is established, could result
in poor combustion. This may lead to a build up of
unburned gases which could ignite noisily and, in extreme
circumstances, cause a small explosion and may damage
the appliance. Always maintain flames in the firebox when
there is new fuel in the appliance - This is particularly
important when burning solid mineral fuels.
6.4 Flue Draught
The chimney has two main functions:
6.5 Weather conditions
The weather conditions outside the building can effect the
burning performance of the appliance. These could include:
Weather Conditions Problem Effect
Windy days
Calm days
Damp / Rainy days
To reduce these problems:
—Use good quality kindling wood to start the fire.
—Burn initially at a high temperature for a short period.
—Fit a rain cowl to the chimney.
Your installer should advise you on possible solutions.
If the appliance emits smoke into the room continuously:
—Close the air controls and allow the appliance to go out.
—Ventilate the room to clear the fumes.
Do not re-light the appliance until the problem is solved.
Buildings/obstacles
cause turbulent air
around chimney
Oversized chimney Smoky appliance
Flue temperature
not hot enough /
rain water inside
chimney
Smoky appliance
Lighting and
burning problems
1) To safely remove the smoke, gases and fumes from the
house.
2) To provide a sufficient amount of draught (suction) in the
appliance ensuring the fire keeps burning.
8
USER INSTRUCTIONS
7. ASH REMOVAL
Do not allow ash to build up in the appliance as it will
not burn properly and may cause damage.
7.1 Wood
—Open doors and using gloves remove ashpan with the tool
provided (see Diagram 10).
—Remove ash and place into a Yeoman Ash Caddy
(Yeoman Part No. 4227) or other suitable container.
Do not place hot ash in any container made from plastic
or any other combustible material.
—De-ash at least once a week or when ashpan is full.
10
Ashpan
PR9033
7.2 Multi-fuel:
—De-ash the appliance before filling with new fuel. Do not
allow ash to build up on the underside of the grate as this
can cause premature failure.
—Riddle (see Diagram 11).
11
8. EXTENDED BURNING
8.1 It is possible to get the appliance to burn for extended
periods of time. In order to do this:
—De-ash prior to final refuelling.
—Set air controls to low combustion settings.
This will gradually blacken the glass but it will clear when
operated at a high temperature for a short period.
—Use smokeless fuel or small, thick logs.
9. OVER-FIRING
9.1 Do not over-fill with fuel or run at high temperatures for
long periods or over-firing can occur. If the flue pipe, flue
collar or top plate glow red the appliance is over-firing.
Close the air controls to reduce the temperature.
9.2 Over-firing can cause permanent damage to the
appliance and invalidate the product warranty.
WARNING: DO NOT OPERATE THE APPLIANCE WITH
THE PRIMARY AIR CONTROL OPEN FOR LONG
PERIODS OF TIME AS THIS COULD CAUSE OVERFIRING AND MAY CAUSE PERMANENT DAMAGE.
10. CHIMNEY FIRE
10.1 If a chimney fire occurs:
—Shut all air controls immediately.
—Evacuate the building.
—Call the fire brigade.
—Do not re-enter the building until it is confirmed safe.
10.2 Do not use the appliance after a chimney fire until:
Riddling
Handle
PR9035
—Remove ash and place into a Yeoman Ash Caddy
(Yeoman Part No. 4227) or other suitable container.
Do not place hot ash in any container made from plastic
or any other combustible material.
—De-ash at least once a week or when ashpan is full.
a) It has been inspected by a registered installer* who
has confirmed the appliance is safe to use.
b) The chimney system has been inspected and swept by a
chimney sweep, confirming the system is structurally sound
and free from obstruction**.
c) It is repaired as required before re-use. Use only
genuine Yeoman replacement parts to keep your appliance
in safe, efficient working order.
* Registered on the Competent Persons Scheme (GB only)/
INFO (Republic of Ireland only) see page 25 for details.
**This should be done by a HETAS Approved Chimney
Sweep (UK only)/INFO registered (Republic of Ireland only)
see page 26, who will issue you with a certificate.
9
USER INSTRUCTIONS
11. GENERAL CLEANING
11.1 Clean and inspect the appliance regularly, especially in
periods of heavy use. Regular cleaning and maintenance
will help give many years of safe use.
Allow appliance to cool thoroughly to avoid risk of burns.
Clean regularly, according to level of use.
Remove the ash completely (see User Instructions,
Section 7).
Check the internal components for damage. Do not use
the appliance if any parts are broken or damaged. Replace
damaged parts with genuine Yeoman replacement parts to
keep the appliance in safe, efficient working order.
Check for obvious build up of soot, ash or debris above the
flue baffle(s) (these can be found in the upper part of the
firebox). Use a torch if necessary.
If there are any signs of a build up of debris above the flue
baffle(s) either:
—Arrange for the chimney to be swept (see User
Instructions, Section 13).
13. CHIMNEY SWEEPING
13.1 To maintain safe and efficient use of the appliance, the
chimney/flue must be inspected and swept at least once a
year by a qualified chimney sweep**.
If the appliance is used continuously throughout the year,
or it is used to burn wood or smokeless fuel, more frequent
sweeping is recommended.
The best time to have the chimney swept is at the start of
the heating season.
The above applies even if burning smokeless fuels.
13.2 The chimney, any connecting flue pipe and the appliance
flue ways, if incorporated, must be regularly cleaned.
13.3 Ensure adequate access for cleaning where it is not possible
to sweep through the chimney.
13.4 If the chimney is believed to have previously served an
open fire it must be swept a second time within a month of
regular use after installation.
14. CARE OF STOVE
—Remove the baffle and clear the debris (see Installation
Instructions, Section 4).
To refresh painted finishes use Midnight black paint.
Check that the door shuts properly and creates an effective
seal. Leaking door seals prevent the appliance working
properly.
Do not use aerosol sprays near an operating appliance.
12. CLEANING GLASS
Keep the glass clean with correct use of the Airwash system
and good quality fuel.
12.1 Sometimes additional cleaning may be required.
This can be done as follows:
—Allow appliance to cool fully. Do not clean hot glass.
—Use a soft cloth and suitable cleaner.
12.2 Do not use cleaning agents that have a high alkaline
content, for example Stovax Gel Cleaner, on appliances
with painted glass such as the Studio, View or CL. These
are abrasive cleaning agents that are designed to be used
with heavily stained clear glass. Use Stovax Glass Cleaner
(Stovax No.4103) on more delicate surfaces.
Do not use acidic cleaners on printed glass.
12.3 Before re-lighting the appliance dry the glass fully.
Yeoman has a range of cleaning and maintenance products
and accessories to keep your appliance in good working
order. Your Yeoman retailer can advise you on suitable
items for your stove and provide genuine spare parts such
asreplacementglass,doorsealingropeandrebricks.
View the extensive range at www.yeoman-stoves.co.uk by
clicking on Accessories. In addition, an annual service by a
competent engineer is recommended to keep your stove in
the best possible condition.
**This should be done by a HETAS Approved Chimney
Sweep (UK only) see page 26 / INFO registered (Republic
of Ireland only) who will issue you with a certificate.
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