AGA LITTLE WENLOCK User manual

LITTLE WENLOCK
GAS STOVE
INSTALLATION AND OPERATION INSTRUCTIONS
To ensure safety, satisfaction and reliable service this stove should be installed by a suitably qualified
and competent person.
This appliance is hot while in operation and retains its heat for a long period of time after use. Children,
aged or infirm persons should be supervised at all times and should not be allowed to touch the hot work-
ing surfaces while in use or until the appliance has thoroughly cooled.

TABLE OF CONTENTS
PAGE NO.
1. Operation Instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2. Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
3. Lighting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
4. What to do if you smell gas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
5. Vent Safety Shut Off Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
6. Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
7. General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
8. Pre-Installation Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
9. Location. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
10. Minimum Clearances to Combustible Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
11. Hearth Fitting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
12. Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
13. Chimney’s/Flues . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
14. Suitable Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
15. Use of Existing Chimney’s and Flues . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
16. Factory-Made Insulated Chimneys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
17. Ventilation & Combustion Air Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
18. Gas Pipes & Fittings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
19. Meters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
20. Gas Pipe Size . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
21. Connection to Gas Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
22. Gas Soundness Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
23. Placement of Coals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
24. Lighting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
25. Burner Lighting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
26. Spillage Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
27 Pilot Flame . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
28. Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Removal of Burner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Changing of Burner Injector Orifice. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Removal of Pilot Burner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
29. Enamel Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
30. Exploded View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
31. Trouble Shooting Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
1

OPERATION INSTRUCTIONS
WARNING: Do not operate the stove with the
appliance door open, or if the glass panel in the
front door has been broken or removed. Ensure
that the door latch is fully locked. Keep the door
spin valve closed at all times when stove is in
operation.
PRECAUTIONS
1. Do not touch any part of the stove while in
operation, except the controls.
2. Children and adults should be alerted to the
hazzards of surface temperatures.
3. Guards may be required to take account of
the special hazzards that exist in nurseries
and other places where there are young
children, aged or infirm persons.
4. Curtains or other combustible material should
not be positioned on/or above the appliance at
a distance less than 38” (965mm).
5. Do not use this appliance if any part has been
under water, immediately call a qualified ser-
vice technician to inspect the appliance and to
replace any part of the gas control or system
which has been under water.
6. Do not store gasoline or other flammable
liquids having flammable vapours near this
stove.
7. Tools must not be used to turn or operate the
valve control knob.
8. Use only in a sufficiently ventilated space.
9. This appliance must be installed in accor-
dance with the rules in force.
10. Read the label and manual provided before
commencing to install or attempting to operate
the stove.
FAILURE TO DO SO MAY RESULT IN
PROPERTY DAMAGE OR PERSONAL
INJURY.
LIGHTING
1. The stove control knob is located at the
bottom righthand side looking from the front.
2. The valve is in the off position when the
control knob symbol “OFF” is at the datum
point and there is no gas to the pilot or main
burner. The knob can only be turned in a
clockwise direction to reach the “OFF”
position. (see Fig.1)
Fig. 1
3. Press the control knob all the way in and
turn anti-clockwise until you hear a clicking
sound.
4. Keep the control knob pressed for 15-30
seconds, and then release . If the pilot fails
to remain lighting repeat this action.
5. With the pilot burner lighting, to establish the
flame hold the control knob in the fully
pressed position with dot pointing towards
ignition. (see Fig.2)
Fig. 2
6. To light the main burner, fully release the
control knob and turn anti-clock-wise to the
required setting. (see Figs. 3&4)
2
High Flame Setting
Fig. 3

Fig.4
7. To turn off the main burner, turn the control
knob in a clockwise direction to low flame.
(see Fig. 4)
Fig. 5
8. While pressing the control knob continue
to turn in a clockwise direction until it stops.
The stove is now off. (see Figs. 5&6)
Fig. 6
NOTE: During the first light-up period an odour
will arise from the stove, this is due to the materi-
als in the stove drying and curing. It is advisable
to open a door or window to give extra ventilation
to the room until the odour has gone.
WHAT TO DO IF YOU SMELL GAS
A. Turn off the gas mains.
B. Do not try to light any appliance.
C. Do not touch any electrical switch.
D. Open windows.
E. Do not use any phone in the building.
F. Immediately call your gas engineer from a
neighbours phone.
G. If you cannot reach your gas supplier, call the
Fire Department.
VENT SAFETY SHUT OFF SWITCH
The vent safety shut off switch location is
designed to shut down the stove when exposed to
excessive temperatures due to severe down
draughts, blocked flues or negative pressure due
to a fresh air shortage. It must not be disconnect-
ed or isolated in any way.
WARNING: Not to be isolated or adjusted.
Parts to be replaced with identical and/or equiva-
lent original parts.
What to do if the vent safety shut off switch
continually goes off:
A: Wait for 4 minutes after shut down.
B: Refer to these lighting instructions for
lighting procedures.
C: If stove fails to light repeat the above
procedures.
D: If stove fails to light after three attempts
contact your local Aga Dealer.
Low Flame Setting
3

TECHNICAL DATA
Pressure Setting From Cold
Natural Gas Inlet Pressure = 8”/20mbar
Product Identification No.: 0063 AS 5164
Appliance Category BIIBS
Country of Designation: I.E., G.B., F.R.& B.E
Gas Type:
N.G.: I2H, G20, 20 mbar/8” wg (I.E. & G.B.)
I2E, G20, 20 mbar/8” wg &
Manifold Pressure Maximum Setting
Natural Gas = 7.4”/18.5 mbar
Manifold Pressure Minimum Setting
Natural Gas = 1.1”/2.7 mbar
Gross Input
Max. Input Natural Gas = 5.3kW/18,084 Btu’s/h
Min. Input Natural Gas = 1.5kW/5,118 Btu’s/h
Efficiency: = Class 2
Gas Flow Rates at 15oC, 1,013mbar in relation to
gross calorific value of gas.
Natural Gas gross
Calorific Value = 37.78 MJ/m3
Maximum flow rate = 0.505 m3/hr
Minimum flow rate = 0.143 m3/hr
Burner: CPD Gas Burner
Burner Injectors:
CAT 18 Bray 320 - N.G.
Pilot Injectors
Size 3.5 - N.G.
Ignition: Piezo Igniter
GENERAL
Thank you for buying a Little Wenlock Gas Stove.
The room heater and flue system should be
inspected before use and at least annually. More
frequent cleaning may be required due to exces-
sive lint from carpeting, matting material, etc. It is
imperative that control compartments, burners
and circulating air passageways of the room
heater are kept clean.
NOTE: Before installation, check that the local
distribution conditions, nature of gas and pres-
sure, and adjustment of the appliance are com-
patible.
When installing, operating and maintaining your
Little wenlock Gas Stove, respect basic standards
of safety. Read these instructions carefully before
commencing installation or attempting to operate
your stove. Failure to do so may result in damage
to property or personal injury and may void the
product warranty.
It is important to note that once a type of gas
has been specified the stove cannot run off
any other type of gas. (i.e. Natural Gas or
L.P.G.)
The burner units are not interchangeable
between Natural Gas or L.P.G.
U.K. Installation
Install in accordance with the:
*The Gas Safety (Installation and Use)
Regulations 1998 (as amended).
*BS 5440: Parts 1 & 2, Installation &
maintenance of flues and ventilation for
gas appliances of rated input not
exceeding 70 kW (1st, 2nd & 3rd family
gases).
*B.S. 5871: Parts 1, 2 & 3, Specification
for installation of gas fires, convector
heaters, fire/back boiler and decorative
fuel effect gas appliances.
*Building Regulations for Britain,
Scotland, Wales and Northern Ireland.
WARNING: Installation, commissioning, repair
and maintenance should only be undertaken by a
qualified service technician and installer.
Any adjustments undertaken by unqualified indi-
viduals will void the product warranty and may
result in property damage or injury.
4
The complete installation must be done in accor-
dance with current Standards and Local Codes. It
should be noted that the requirements and these
publications may be superseded during the life of
this manual.
0063
Stove Weight: 138lbs / 62.5 kilos

This appliance has been tested and approved
in accordance with the essential requirements
of Annex 1 in the Gas Appliance Directive
(90/396/EEC) as amended.
PRE- INSTALLATION ASSEMBLY
Before installing the appliance carry out the fol-
lowing pre-installation assembly:
1. Open the fire door (item 9), and remove
the package of ceramic coals. (See Fig.7)
2. This stove may be connected to either a
top or rear flue outlet. The stove has a rear
flue outlet configuration factory fitted. It may
be changed to a top flue outlet by simply
switching the blanking cap and flue collar as
shown in Fig. 8 & 9.
Fig.7
Fig.8
Fig.9
3. Ensure the leads to the vent safety shut off
switch located on the back of the stove are
connected and secure. (See Fig. 10).
4. Position stove in its chosen location and
connect to the chimney/flue system.
LOCATION
There are many conditions to be considered when
selecting the location for you Little wenlock Gas
Stove.
MINIMUM CLEARANCES TO COMBUSTIBLE
MATERIALS (see Figs 11, 12, 13, 14)
Back wall 6” (150mm)
Left side wall looking from front 5” (125mm)
Right side wall looking from front 5” (125mm)
Alcove or mantle from top of unit 18” (459mm)
From Corner 5” (125mm)
Fig.10
CAUTION: Allow adequate clearances for stove
operation and annual servicing e.g. burner
removal and injector removal.
5

Fig.11
Fig.12
When installing the stove against a
combustible wall leave a 6” space
between the back of the stove and
the wall for air circulation.
(See Fig.12)
Fig.13
Fig.14
Fig.15
When installing the stove against a
non-combustible wall leave a 2” space
between the back of the stove and the
wall for air circulation. (See Fig.15)
HEARTH FITTING
This stove MUST be installed on a concrete con-
structional hearth, or on a non-combustible hearth
slab, minimum size 27.5” (500mm) x 28.8”
(732mm) deep with the fire place opening central-
ly located. The hearth material should be at least
13mm (1/2”) thick, the top surface being preferably
50mm (2”) above floor level to discourage the
placing of carpets over it. (see Fig.16)
6

CHIMNEY’S / FLUES
If connecting to a rear exit configuration the hori-
zontal run should not exceed 300mm (12”) from
the stove outlet. (see fig.17)
The height of the chimney or flue serving this
appliance should not be less than 3 meters (10’),
and not more than 11 meters (36’), measured ver-
tically from the outlet to the top of the flue terminal
and having a diameter of 125mm (5”).
Note: Never connect to a chimney or flue system
serving another appliance.
WARNING: Only operate this appliance if con-
nected to a properly installed and maintained
chimney system. Do not tamper with the vent
safety shut-off system.
Fig.16
7
Fig.17
The chimney and flue pipes intended for use with
this appliance should be mechanically robust,
resistant to internal and external corrosion, non-
combustible, and durable under the conditions to
which they are likely to be subjected. The instal-
lation of flues for gas appliances should be in
accordance with the following standard:
*BS 5440 Installation & maintenance of flues
and ventilation for gas appliances of rated
input not exceeding 70kW (1st, 2nd & 3rd
family gases).
Part 1: - Specification for installation of flues.
Part 2: - Specification for installation &
maintenance of ventilation of gas appliances.
*B.S. 5871: Parts 1, 2 & 3, specification for
installation of gas fires, convector heaters,
fire/back boiler and decorative fuel effect
gas appliances.
SUITABLE MATERIALS
*Mineral Fibre cement pipes conforming to
B.S. 567.
*Sheet metal conforming to B.S. 715.
*Insulated metal chimney’s conforming to
B.S. 4543 (a galvanised finish is not suitable).
*Clay flue linings conforming to I.S. 51 &
B.S. EN 1457 1999.
*Pre-cast concrete chimney blocks, incorporat-
ed into the building structure. It is particularly
important that the correct connection block be
provided at the base of the flue, B.S. 1289.
*Cast iron or acid resistant vitreous enamelled
lined mild steel to B.S. 41.
Where twin wall pipes are of sheet metal con-
struction the length of pipe located externally
should not exceed 1m (3’3”) unless it is readily
accessible for renewal.
DIMENSIONS
Dimensions A B C D E F
Metric (mm) 405 540 430 445 96 335
Imperial (inches) 16 212/8 167/8 174/8 36/8 132/8

Fig.18
Fig.19
8
USE OF EXISTING CHIMNEYS AND FLUES
(See Figs. 18, 19 & 20)
An existing flue pipe or chimney that has proved to
be satisfactory when used for solid fuel can nor-
mally be used for a gas appliance provided that its
construction and condition is acceptable. Flues
that have proved to be unsatisfactory, particularly
with regard to down draught, should not be used
for venting gas appliances until they have been
examined and any faults corrected. If there is any
doubt regarding an existing chimney a smoke test
to B.S. 5440: Part 1 should be carried out.
Before connecting this appliance to a chimney or
flue pipe which has previously been used with
another fuel, the chimney or flue pipe must be
thoroughly swept.
All register plates, restrictor plates, dampers etc.
which could obstruct the flue at a future date
should be removed before connecting this appli-
ance.
Note: Aflue spigot extension of up to a maximum
total length of 300mm (12”) may be fitted if neces-
sary, provided a minimum clearance of 50mm (2”)
between its open end and the nearest obstruction
is always provided.
Note: It may be necessary to reline the flue in
order to help avoid spillage. (see Figs. 19 & 20).
Fig.20

FACTORY-MADE INSULATED CHIMNEY’S
Factory-made insulated chimneys must be con-
structed and tested to meet the relevant standards
and recommendations given in:
*B.S. 7566: Installation of factory made
chimney’s conforming to B.S. : 4543 for
domestic appliances.
Part 1: Method of specifying installation
design information.
Part 2: Specification for installation design.
Part 3: Specification for site installation.
Part 4: Recommendation for installation
design and installation.
VENTILATION & COMBUSTION AIR REQUIRE-
MENTS
This stove has a heat input of less than 7 kW and
therefore does not normally require any additional
ventilation. However, consideration must be given
to the local rules in force.
*Any air vent must either be connected
direct to an outside air supply or to adjacent
rooms having a permanent vent to the out
side.
*If there is another combustion appliance
fitted in the same or adjacent room, it will
be necessary to refer to the rules in force to
calculate the additional air supply.
*If there is an air extraction fan fitted in the
room or adjacent rooms where this appliance
is fitted, additional air vents may be required
to alleviate the possibility of spillage of prod-
ucts of combustion from the appliance/flue
while the fan is in operation. Refer to the rules
in force.
*Where such an installation exists, a test for
spillage should be made with the fan or fans
and other gas burning appliances in operation
at full rate.
*If spillage occurs following the above oper-
ation, an additional air vent of sufficient size
to prevent this occurrence should be installed.
GAS PIPES & FITTINGS
Materials used for installation work should be fire
resistant and gas tight and should conform to the
following or their equivalent.
*I.S. 238, I.S. 239 and prEN 1057 - Copper
tubes.
*I.S. 265 - Installation of gas service pipes.
*I.S. 266 - Polyethylene pipes.
*EN 29453 & I.S.O. 9453 - Soft Solders.
*B.S. 669 - flexible hoses, fittings & sockets.
*B.S. 759 - valves, gauges and other safety
equipment.
*B.S. 1387 - Steel tubes.
*B.S. 6362 - stainless steel tubes.
*B.S. 1740 - Wrought steel pipes.
*B.S. 4089 - L.P.G. hoses and assemblies.
METERS
Asuitable gas meter must be connected to the
service pipe either by a representative of the gas
board or by an appointed contractor. If using an
existing meter have it checked to ensure that the
meter is capable of dealing with the total rate of
gas needed.
GAS PIPE SIZE
It is important that the correct service pipe size be
used for adequate gas supply. This depends on
the distance between the supply meter and the
appliance relative to the input requirements. The
gas supply to the appliance should be terminated
near the appliance with an approved safety type
service tap.
CONNECTION TO GAS SUPPLY
The gas control is located at the bottom right hand
side of the unit. Check that the mains gas supply
pipe is adequately sized and capable of supplying
enough gas to the appliance when operating on
max. rate.
9
WARNING: Before connecting the stove make
sure the gas supply pipe is clear of grit and debris
as this will cause blockage within the stove con-
trol, pilot burner, injectors and pipework. Failure
to do so may void product warranty.
Fig.21

WARNING: To avoid pipe sealing compounds
from entering into the gas train, do not apply seal-
ing compound to the first two threads at the tip of
the gas connection.
Fig.22
Fig.23
PLACEMENT OF COALS
1. Before positioning the coals in the combustion
chamber, check for dust particles and grime,
vacuum if necessary. Position the coals as
per instructions as incorrect placement will
effect the performance of the stove. Dust off
the inside of the door glass using a clean dry
cloth. (see Fig.24)
2. Lay the gasket material provided, on the
burner with the holes in the burner lined up
with the holes in the gasket.
3. Lay the ceramic matrix on the burner with
the holes in the burner lined up with the holes
in the ceramic. (see Fig. 25)
CAUTION: If using a gas leak detection fluid for
leak testing DO NOT spray solution onto control
body.
WARNING: The ceramic coals supplied with this
stove are extremely durable and long lasting
when fitted properly. They are, however, very del-
icate and can be easily damaged if they are not
handled very carefully.
Handling damage to the ceramic coals is not
covered by warranty.
10
NOTE: Clean off any excess pipe compounds
from connections.
GAS SOUNDNESS TESTING
Gas soundness testing should be in accordance
with I.S. 813 (I.E.) and B.S. 6891 (U.K.). Correct
gas pressure and proper gas supply pipe sizing is
important for the successful performance of this
appliance. Make sure that the plumber or gas
supplier checks the gas supply line and gas pres-
sure at installation.
After testing gas supply pipe work, open isolation
valve to stove and carry out gas soundness test-
ing at normal working pressure of 20 mbar.
With stove lighting carry out a leak test down-
stream of control using gas leak detection fluid.
WARNING: Only connect to gas type indicated
on the rating plate.
CAUTION: The appliance must be isolated from
gas supply system during any gas soundness
testing at pressures in excess of 50 mbar.
Note: Exhibit care when cleaning the burner to
avoid blockage or damage of burner parts.
Fig.24
Fig.25

4. Place 4 medium coals on the front of the
matrix with their corners touching and also
one corner of each coal resting on a spar.
(see Fig.26) Fig.26
6. Place 3 small coals on 3 of the medium
coals leaving one corner of the small coal
touch the large coals. Place the last small
coal on either side of the matrix. (See Fig.28)
Lay the two remaining medium coals random-
ly on the matrix ensuring that no more than
one corner of the coals touch any other coal.
(See Fig. 29)
Fig.28
Fig.29
11
5. Place 4 large coals on the rear of the matrix
with their corners touching. The front corner
should over hang the back section of the
matrix by approximately 10mm. (See Fig.27)
10mm
IMPORTANT: Leave an air space around each
coal to allow easy flow of products of combustion,
too much impingement of flame on coals will
cause sooting.
LIGHTING
First Lighting-
Purge air from the supply line as follows:
a. Open main shut-off valve. Unscrew inlet
pressure test point. Leave open inlet test
screw until gas comes.
b. When gas comes tighten inlet screw immedi-
ately.
WARNING: Do not purge the system near a
naked flame or hot surface.
Press in the control knob all the way. Turn anti-
clockwise until you hear a clicking sound. Keep
control knob pressed for 15-30 seconds. Release
control knob. If the pilot fails to light repeat this
action.
Fig.27
7. Place a medium coal on the medium coal
which does not already have a small coal
on top of it. Ensure one corner of the medium
coal rests against the large coal behind it.
Fig.30

WARNING: Do not operate the stove with the
appliance door open, or if the glass panel in the
front door has been broken or removed.
Ensure the door latch is fully locked. Keep the
door spin valve closed at all times when the stove
is in operation.
During the first light up period an odour will rise
from the stove, this is due to the materials in the
stove drying and curing. It is advisable to open a
window or door to give extra ventilation to the
room until the odour has gone.
BURNER LIGHTING
1. With the pilot flame firmly established turn the
control knob anti-clockwise to the high position.
When the main burner is lighting adjust con-
trol knob clockwise to a lower setting if
required.
2. If the pilot light is extinguished either inten-
tionally or unintentionally no attempt should be
made to light the gas until at least 4 mins. have
elapsed.
SPILLAGE TEST
When the stove is installed carry out a spillage
test (See Fig.30) as outlined in the following
procedure:
a. Operate stove for a minimum of 10 mins.
at maximum setting.
b. Run all other combustion appliances and/or
extraction fan/s fitted in the room or adjacent
rooms at full setting e.g. clothes dryers, fur-
naces etc.
c. Close windows and external doors.
d. With a smoke match, joss stock or smoke
puffer run around 1” (25mm) from the edge
of the down draught opening. (See Fig. 30).
e. If all the smoke is pulled into the down draught
opening, there is no spillage.
PILOT FLAME
NOTE: It is essential that every flue system be
inspected and tested by the installer upon com-
pletion, to ensure that the combustion products
are completely discharged to the outside atmos-
phere.
NOTE: The pilot flame should be a steady blue
flame which has contact with the upper 3/8” of the
thermopile. (See Fig 31)
Fig.31
IMPORTANT: Please ensure that the pilot injec-
tor is clear at all times, as a partially blocked injec-
tor will result in a reduced flame which may be
insufficient for ignition purposes.
MAINTENANCE
CAUTION: Maintenance of this stove should only
be carried out by a qualified/competent Gas
Engineer.
Isolate the main gas supply before carrying
out any maintenance.
Removal of Burner
1. Shut off gas supply at the shut off valve.
2. Open door (item 9).
3. Carefully remove the coals.
4. Disconnect the 8mm gas pipe at the back
of the control under the lip. (see Fig.32)
12
CORRECT FLAME INCORRECT FLAME
Fig.32
5. Disconnect the snap switch leads from the
snap switch located at the back of the stove.
(See Fig. 33).
6. Remove the two M6 wing nuts located on the
under side of the stove on the right and on the
left. (See Fig.33).
7. Carefully lift up the burner assembly starting
with the left side and gradually turning the
assembly anti-clockwise until the left side of the
assembly is facing towards the door opening.
(See Fig.35, 36, 37).

Fig.33
Fig.34
Fig.35
Fig.36
Fig.37
ENAMEL CLEANING
General cleaning must be carried out when the
stove is cool.
If this stove is finished in a high gloss vitreous
enamel, to keep the enamel in the best condition
observe the following tips:
1. Wipe over daily with a soapy damp cloth,
followed by a polish with a clean dry duster.
2. For stubborn deposits a soap impregnated
pad can be carefully used on the vitreous
enamel.
3. Use only products recommended by the
Vitreous Enamel Association, these products
carry the vitramel label.
4. DO NOT USE ABRASIVE PADS OR OVEN
CLEANSERS CONTAINING CITRIC ACID
ON ENAMELLED SURFACES. ENSURE
THAT THE CLEANSER MANUFACTURERS
INSTRUCTIONS ARE ADHERED TO.
13
ASSOCIATION
Changing of Burner Injector Orifice
With the complete burner assembly removed as
per Fig. 35, 36, 37.
1. Disconnect the 6mm gas feed pipe from the
control to injector. (see Fig. 38).
2. Slacken the 6mm gas feed pipe to the
injector at the control.
3. Remove Injector from burner.
Removal of Pilot Burner
1. Unscrew the two 1/4” slotted head screw from
pilot burner. (See Fig.39)
2. Disconnect the 6mm gas feed pipe.
Fig.38
Fig.39

14
LITTLE WENLOCK GAS EXPLODED VIEW
1. Leg
2. Front Frame
3. Blanking Plate
4. Flue Spigot
5. Hob
6. LH & RH Side Panels
7. Back Casting
8. Base
9. Burner NG
10. Mains Inlet Bracket
11. Vent Switch Bracket
12. Rating Plate Bracket
13. Vent Switch
14. Coal Matrix
15. Door Assembly
16. Control Plate
17. Serial Number Plate
18. Data Plaque
19. Front Baffle
20. Back Baffle
21. Door Catch
22. Long Tie Bolt
23. Tie Rod (M8*260mm)
24. Mains Inlet Pipe
25. Inlet Valve
26. Aga Stove Badge
27. Dia. 8 x 6mm Olive
28. 1/4” BSP Nut
29. Spin Valve
30. Door Hinges
31. Door Glass
32. Door Handle
33. Glass Clips
34. Burner Gasket
35. Thermocouple C/W Leads
36. Pilot Injector
37. Pilot Electrode
38. Gas Valve
39. Control Valve Knob
23
13
11
18
10
12
6
2
25
24
28
27
16
9
8
1
26
30
31
21
33
17
29
32 15
14
22 6
19
20
7
5
4
34
35
36
37
38
39
3

TROUBLE SHOOTING GUIDE
PROBLEM POSSIBLE CAUSE SOLUTION
Pilot will not light No gas Check gas is turned on.
Safety interlock preventing Wait 5 minutes & attempt to relight.
Operation.
Control knob not fully pressed. Ensure control knob is being fully
pressed.
Disconnected piezo igniter. Connect piezo cable.
Air in gas lines Call your qualified service technician.
Insufficient gas pressure. Call your qualified service technician.
Damaged pilot hood. Call your qualified service technician.
Blocked orifice. Call your qualified service technician.
Defective control valve. Call your qualified service technician.
Faulty piezo igniter Call your qualified service technician.
Pilot lights but goes out Insufficient flame impingement on Call your qualified service technician.
when the control knob thermocouple.
is released.
Incorrect position of thermocouple. Call your qualified service technician.
Weak milli volt current. Call your qualified service technician.
Poor electrical contacts. Call your qualified service technician.
Burners will not light. Control knob may not be Turn control knob anti-clockwise to a
turned to correct position. heat output setting.
Air in gas lines. Call your qualified service technician.
Incorrect inlet pressure. Call your qualified service technician.
Blocked orifice. Call your qualified service technician.
Faulty control valve. Call your qualified service technician.
Heater operates normally Blocked flue. Clear blockage.
then goes out within Insufficient draught leading to the
10 minutes. switch activating. Call your qualified service technician.
Defective vent safety switch. Call your qualified service technician.
Noise in pilot/burners Excessive gas pressure. Call your qualified service technician.
Draught hood spillage. Chimney or venting system not Increase height.
high enough.
Chimney or venting system blocked Clear blockage.
Leaks in chimney or venting Seal joints.
system joints.
Insufficient air supply when other Call your qualified service technician.
air using appliances are in
operation.
Flame characteristics:
Hard sharp flame Excessive primary air. Reduce air intake.
Yellow flame Insufficient primary air supply. Increase air intake.
Over sized burner orifice. Call your qualified service technician.
Lifting flame Excessive gas pressure. Call your qualified service technician.
Small sharp flame Clogged burner orifice. Call your qualified service technician.
Semi clogged gas supply line. Call your qualified service technician.
Excessively low gas pressure. Call your qualified service technician.
Rev:002 DP 060822
15
Aga,
Station Road,
Ketley, Telford,
Shropshire, TF1 5AQ,
UK
N00398AXX